#help-with-arduino | adafruit | Page 49

north stream Jan 17, 2020, 2:30 PM

#

Since light perception is (more or less) logarithmic, that makes some sense.

safe shell Jan 17, 2020, 6:32 PM

#

Well, that's interesting. All of my Arduino-developed ESP8266 devices (which are usually very stable running code from 2017, some have been running continuously for almost a year) stopped working at the same time early this morning. Ruled out Wi-Fi and local network issues. ESP32s running almost identical code are checking in with the server just fine, as are CircuitPython boards. I think it's HTTPS/TLS-related... either something expired, or maybe the server stopped supporting the encryption algorithm.

north stream Jan 17, 2020, 6:38 PM

#

That is intriguing, and I agree with your analysis.

safe shell Jan 17, 2020, 7:43 PM

#

So now I either need to (for about a dozen and a half devices): re-create the old dev environment (same code with updated boards and libs won't compile - deprecated HTTPS lib among other things); re-code 8266 with new secure client; migrate to ESP32, or; migrate to CircuitPython+Airlift.

#

And of course this happens right before I'm traveling.

north stream Jan 17, 2020, 8:08 PM

#

Because of course it does, that's die Tücke des Objekts (the general cussedness of things)

safe shell Jan 17, 2020, 8:52 PM

#

LOL, interesting reference 🙂

bleak mirage Jan 17, 2020, 11:15 PM

#

Does anyone have any experience with Firmata?

#

I want to be able to write to a DAC using Python but can't figure out how to do i2c communication with Firmata. Can only find stuff for reading and writing digital/analog pins.

north stream Jan 17, 2020, 11:24 PM

#

I've played with Firmata, but I haven't tried I2C either

vast cosmos Jan 18, 2020, 4:27 AM

#

which firmata library are you using?

#

and if we are ante'ing up here, i'll raise one: does anyone here have any experience with SPI using DMA?

#

..particularly on STM32 HAL ...(quickly glances at the channel name, hopes nobody else notices too)

#

since we now have an STM32 board in the adafruit library, what objections would there be to hosting an #help-with-stm32cube channel here on this discord?

#

(and if i recall, more stm32-based adafruit boards coming down the pike soon too)

#

not to mention, even the newest beefy Portenta H7 is a dual-STM32-core being developed by.... wait for it... ....arduino

#

who do i contact for channel creation requests?

cedar mountain Jan 18, 2020, 4:48 AM

#

I've done STM32 SPI DMA drivers before, but it was a while ago and I don't have access to the code any more...

vast cosmos Jan 18, 2020, 5:08 AM

#

well i have more of an STM32 SPI protocol implementation question: do you know if it is safe to change the SPI baud rate prescalar dynamically at runtime tp property communicate with multiple slaves with each their own max clock frequency

burnt island Jan 18, 2020, 5:14 AM

#

I believe so. It looks like that's what the SPIDevice class in CircuitPython.

cedar mountain Jan 18, 2020, 5:14 AM

#

I believe so too, though you may need to temporarily disable the SPI peripheral to do it reliably.

burnt island Jan 18, 2020, 5:16 AM

#

the other devices should be ignoring MOSI when it isn't selected so they shouldn't even notice that the baud rate changes

bleak mirage Jan 18, 2020, 2:37 PM

#

Yeah I'm also finding STM32cube to be a pain

burnt sluice Jan 18, 2020, 3:54 PM

#

Hey. I have an Itsy Bitsy M4 I'm trying to program, but when I connect it to a USB port on my Mac (running Catalina), I get a steady purple light on the M4, and nothing drive shows up on my Mac. Also, I can't upload sketches. It can't find anything on the port.

#

An error occurred while uploading the sketch
No device found on cu.usbmodem14201

#

Pressing reset on the device lights up a red led briefly, but nothing else happens. Pressing reset twice moves into bootloader mode, but nothing else.

#

Okay. Tried pressing reset twice again and it did something different. (must have done it faster?)

#

Purple changed to green, drive (ITSYM4BOOT) appeared, and I can access the bootloader now.

#

Pressing reset again takes me back to purple. In neither state can I upload sketches.

burnt sluice Jan 18, 2020, 6:48 PM

#

I made sure my bootloader was updated to 3.7.0. Still can't upload sketches.

pine bramble Jan 18, 2020, 10:36 PM

#

Did you try using another USB port on your computer?

#

Something in the operating system may be claiming the USB port. Could try booting from a cold start (power off, not 'sleeping').

#

@vast cosmos @bleak mirage dfu-util works for me.

burnt sluice Jan 18, 2020, 10:46 PM

#

I just figured it out a few minutes ago.

pine bramble Jan 18, 2020, 10:46 PM

#

I am deathly afraid to upgrade stm32duino as it was annoying to get dfu-util and Arduino IDE to work well together.

burnt sluice Jan 18, 2020, 10:46 PM

#

I have to put the M4 into bootloader mode, and from there I can upload scripts.

pine bramble Jan 18, 2020, 10:47 PM

#

@burnt sluice If the board is dead the red LED will no longer 'breath' in bootloader mode.

burnt sluice Jan 18, 2020, 10:49 PM

#

I didn't think it was working because I was trying to use some external components, and they weren't functioning because I didn't have an external power source powering them. (This is mounted on a custom PCB, and while the individual components were receiving a bit of power from the board, one component was not, and it was the lynchpin.)

#

Once I added the external power source, the LED strips started working. (clock and data paths were going through some level shifters that were not getting power)

#

I figured it out when I changed the LED setup to just use the onboard LED, and it worked.

pine bramble Jan 18, 2020, 11:08 PM

#

I miss more of those gotchas than I used to, but the solution is also more obvious when I do notice it. ;)

mortal ferry Jan 18, 2020, 11:15 PM

#

Does anyone on here use Sublime Text 3 with Arduino? bonus points if you use a Teensy

#

I'm debating using the Stino package but I'm worried about how much work it'll take for it to cooperate with the Teensy loader.

vast cosmos Jan 19, 2020, 4:47 AM

#

yep, i use all 3 religiously @mortal ferry

#

but the only integration among them i use is alt+tab 🙃

mortal ferry Jan 19, 2020, 4:49 AM

#

Lol

vast cosmos Jan 19, 2020, 4:49 AM

#

if you havent tried using the official arduino-cli yet, i do recommend it. it will certainly make communicating sublime->arduino 1000x easier

mortal ferry Jan 19, 2020, 4:50 AM

#

My only issue with that is that Arduino does not appear to ever update from file, if it is changed in another IDE. I imagine the CLI is used to get around that?

vast cosmos Jan 19, 2020, 4:51 AM

#

you need to select the "external IDE" option in arduino preferences

mortal ferry Jan 19, 2020, 4:51 AM

#

I was concerned I'd revert changes to my files, if tried to use the Arduino IDE. And I don't want to go opening it and closing it every time I flash

#

I see. What do I use the CLI for then?

vast cosmos Jan 19, 2020, 4:52 AM

#

so that you dont have to use the arduino GUI. you can simply invoke the build and the flash from command line (and thus from a custom sublime "build system" i.e. bash script)

mortal ferry Jan 19, 2020, 4:52 AM

#

That's what I figured. So the external IDE option is just for those who want to keep using the GUI

#

Thanks for the advice! I will investigate.

vast cosmos Jan 19, 2020, 4:53 AM

#

well the external IDE fixes that issue you noticed about it not reloading from file

#

it will refresh from file everytime it gains focus

mortal ferry Jan 19, 2020, 4:53 AM

#

Right, I getcha. A CLI is definitely more convenient for me though.

vast cosmos Jan 19, 2020, 4:54 AM

#

same for me. if youre comfortable with modern CLIs it should be immediately intuitive. inline help with every sub-command too

vast cosmos Jan 19, 2020, 5:33 AM

#

boy i hope all of this work im doing to optimize performance with my SPI TFT display wont all be for naught once I get to a stopping point and start retrofitting DMA into the mix

#

is DMA something you should really have architected into the software up-front? or can it be relatively straight-forward to implement (either by replacing existing code, or by adding as a feature option) after all graphics primitives over SPI have been defined?

cedar mountain Jan 19, 2020, 5:42 AM

#

Just my opinion, but I've found it to be about 80% okay as an after-the-fact performance enhancement, and 20% headaches with questions of who owns memory and for how long.

#

A twist particularly with STM32 processors is that you sometimes run into DMA channel contention, where you need to only use SPI2 instead of SPI3 to avoid conflicting with UART1, etc. Similar to pin-assignment conflicts, these restrictions can be important to know about early in the design.

vast cosmos Jan 19, 2020, 6:28 AM

#

im using STM32G4, which has a little different different SPI implementation

potent ferry Jan 19, 2020, 6:19 PM

#

Hi guys, i am having issues with arduino due and the i2c

Ooops, no BNO055 1 detected ... Check your wiring or I2C ADDR!

I am not having issues with the same sensor and its use with the mega though
is there any solution for the due for this?
tx

fluid wagon Jan 19, 2020, 6:33 PM

#

Is there anything else on the i2c bus?

surreal pawn Jan 19, 2020, 6:41 PM

#

which pins are you using for i2c? did you get them swapped?

#

looks like 20 is SDA and 21 is SCL on Due and mega 2560 which doesn't match the uno pinout

red steeple Jan 19, 2020, 8:09 PM

#

Hi, i have installed Arduino IDE 1.8.10 on an Raspberry Pi 4 under Buster with the latest Updates! I have installed the latest Arduino SAMD From Board Manager! When i install the latest Adafruit SAMD from Board Manager, then i always get Compile Errors with the Blink-Sketch! If i use a older Version of Adafruit SAMD it works. It look like a Problem with the path, because it is looking for a arduino15 folder, which does not exist on the pi. The Problem with the older Version of Adafruit SAMD is that i get compiling errors with the tensorflow examples. The arcadia examples are working! Many thanks for help!

potent ferry Jan 19, 2020, 8:50 PM

#

20 sda and 21 scl. It deems they match on the due and mega

#

i am sure i did not swap them

fair reef Jan 19, 2020, 9:54 PM

#

I can't figure out how to construct the Adafruit_FlashTransport_SPI or Adafruit_FlashTransport_QSPI classes for the Serpente R2 (and don't know which I need)

Its pinout shows 4 SPI pins, but I can't find how to construct the class with that.

https://serpente.solder.party/r2/schematics_plug_c.png
https://github.com/adafruit/Adafruit_SPIFlash/blob/master/examples/SdFat_ReadWrite/SdFat_ReadWrite.ino

https://learn.adafruit.com/adafruit-feather-m0-express-designed-for-circuit-python-circuitpython/using-spi-flash
I used this to get the libraries set up

I tried using pin 16 as SlaveSelect but I think it stopped USB serial working, idk. It was absolutely refusing to do USB Serial, on two different machines, when I did that.

GitHub

adafruit/Adafruit_SPIFlash

Contribute to adafruit/Adafruit_SPIFlash development by creating an account on GitHub.

Adafruit Learning System

Adafruit Feather M0 Express - Designed for CircuitPython

Get running faster than ever with the first Adafruit Express board

coral bolt Jan 19, 2020, 10:57 PM

#

Howdy

Total noob here. Not totally sure I'm in the right place but here's my problem.

I have a Trinket M0 5V I'm trying to set up for use. I can not get the CIRCUITPY drive to appear. Running Windows 10 (its had all its shots).

I do hear the USB device sound when I connect and reset the trinket. I can also see it under Devices and Printers so I'm pretty sure Windows knows its connected

surreal pawn Jan 19, 2020, 10:58 PM

#

there isnt a trinket m0 that's 5v

#

https://www.adafruit.com/product/1501 is an attiny85 and can't run circuitpython

Adafruit Trinket - Mini Microcontroller - 5V Logic

Deprecation Warning: The Trinket bit-bang USB technique it uses doesn't work as well as it did in 2014, many modern computers won't work well. So while we still carry the Trinket so ...

coral bolt Jan 19, 2020, 11:00 PM

#

Is that one Arduino IDE only?

surreal pawn Jan 19, 2020, 11:01 PM

#

I'd expect so but haven't read the adafruit learning system page yet

coral bolt Jan 19, 2020, 11:01 PM

#

got it. I think I was reading about the 3V one I had for another project

#

I'll give that startup tutorial a shot

#

Thanks!

surreal pawn Jan 19, 2020, 11:02 PM

#

the trinket 3v is also attiny85 and can't run circuit python

coral bolt Jan 19, 2020, 11:02 PM

#

thanks! appreciate the help

upbeat kernel Jan 20, 2020, 3:33 AM

#

Hi everyone! i'm working on this project : https://www.hackster.io/rundhall/infinity-mirror-wall-clock-in-ikea-picture-frame-700125 . the program was made with a esp8266 in mind but the arduino IDE give me that message : "WARNING: library Timezone claims to run on avr architecture(s) and may be incompatible with your current board which runs on esp8266 architecture(s)" . Is there a way to fix this?

Hackster.io

Infinity Mirror Wall Clock in IKEA Picture Frame

I built an RGB LED wall clock with internet synchronization (ESP8266) and combined it with an infinity mirror. By Rundhall.

fierce aurora Jan 20, 2020, 12:36 PM

#

I'm trying to connect an Arduino to my MacBook running Catalina. It's not showing up as one of the /dev/tty or /dev/cu ports. Before I go into all the details of what I've tried let me ask a simple question: is this a known issue? Are other's having problems with Arduino and Catalina?

odd fjord Jan 20, 2020, 12:48 PM

#

@fallen linden I'm not having any problems with Arduino and Catalina 10.15.2 (once I got past the initial security startup issues when I moved to Catalina)

acoustic nebula Jan 20, 2020, 12:56 PM

#

I also am running on Catalina. No USB issues, but I had to give permission for the IDE to run and access files

fierce aurora Jan 20, 2020, 1:08 PM

#

Thanks for the replies. Are you folks using the SiLabs driver? Is that still required? I've tried with and without it. (FYI one of these MacBooks I've used for extensive arduino work in the past, pre Catalina, using that driver. But now I'm not 100% sure it's even installing. I expected that I'd have to bless it via the "Security/Privacy" control panel, but it takes no notice of this driver install.) I'm kinda stumped.

#

FYI the IDE seems to be running just fine. It completes compiles without complaint. But none of the boards I've tried will appear in the ports list.

odd fjord Jan 20, 2020, 2:20 PM

#

@fierce aurora it's been so long since I installed any drivers, I don't recall if it is still there -- How can I check?

#

I do have SiLabsUSBDriver.kext in /Library/Extensions -- it's been there a long time...

#

When I connect an ESP8266 to my Mac it shows up as tty.SLAB_USBtoUART

#

but an Arduino UNO shows up as tty.usbmodem1424201

#

What board(s) are you trying to access?

fierce aurora Jan 20, 2020, 2:50 PM

#

@odd fjord Thanks. What you're seeing is consistent with what I've seen when successfully connecting Arduinos in the past.

#

I just looked and I do see the SiLabsUSBDriver.kext on the older macbook. I do not see it on the newer macbook pro, but that's not surprising as I've been installing and uninstalling to try and isolate this.

#

I'm trying some more things now. I'll report what I find.

odd fjord Jan 20, 2020, 2:57 PM

#

Good luck!

fair reef Jan 20, 2020, 7:23 PM

#

Where can I best ask about how to configure Adafruit SPIFlash for the Serpente R2?

#

It's similar to the M0 Express, I think

odd fjord Jan 20, 2020, 7:25 PM

#

@fair reef using Arduino or CircuitPython?

fair reef Jan 20, 2020, 7:25 PM

#

Arduino

odd fjord Jan 20, 2020, 7:26 PM

#

this is the place -- hopefully someone here to help -- not me, though 😉

fair reef Jan 20, 2020, 7:27 PM

#

I did ask yesterday. How do I respectfully keep it visible? 😅

odd fjord Jan 20, 2020, 7:28 PM

#

just ask again -- if it's been a day with no response, it's ok to ask again, weekends and holidays can be slow ...

fair reef Jan 20, 2020, 7:30 PM

#

Alright. I'll wait until it's been 24h at leeeeast 😆
Thank you

dull bison Jan 20, 2020, 8:49 PM

#

Anyone can tell me why my LED keeps giving green color. I started code with pixel.clear(); and pixel.show(); and commented out the color defining ones. If i reupload this code it keeps my leds burn color of commented line

mortal ferry Jan 20, 2020, 9:08 PM

#

I'm working on a graphics problem today and was wondering if anyone might be interested in helping me wrap my head around something:

📎 IMG_2551.MOV

daring marsh Jan 20, 2020, 9:09 PM

#

@fair reef you might be better off asking in #keyboards cause arturo182 hangs out there

mortal ferry Jan 20, 2020, 9:11 PM

#

I'm trying to rotate this cube on a Teensy3.2. My approach so far has been a rotational transform approach, where I calculate whether each pixel is inside the bounds of the box by transforming it in reverse. But this takes 4 floating point multiplications, adding up to 4.2us per pixel, which ends up being pretty slow.

#

I found this approach, which avoids the multiplication: http://mathforum.org/library/drmath/view/54386.html but I'm really not getting the algorithm they list

surreal pawn Jan 20, 2020, 9:14 PM

#

@dull bison on what hardware?

daring marsh Jan 20, 2020, 9:20 PM

#

@mortal ferry 1) are you using float or double? double is incredibly slow

#

can you use fixed point

rocky igloo Jan 20, 2020, 9:21 PM

#

@mortal ferry I think I'm following the post you linked to. How far along with it did you get? 😁

daring marsh Jan 20, 2020, 9:22 PM

#

and are you using sinf/cosf

mortal ferry Jan 20, 2020, 9:23 PM

#

I'm using float

#

@daring marsh and I have a sinf/cosf lookup table to avoid those

#

//transforms for rotated rectangle
int xshi = screenX - box_cen;
int yshi = screenY - box_cen;
int x2 = cos_lookup[boxThe]*(xshi) + sin_lookup[boxThe] * (yshi) + box_cen;
int y2 = -sin_lookup[boxThe]*(xshi) + cos_lookup[boxThe] * (yshi) + box_cen;

if (x2<box_max && x2>box_min && y2<box_max && y2>box_min) {
  p = BLUE;
} else {
  p = BLACK;
}

daring marsh Jan 20, 2020, 9:25 PM

#

have you timed where the delay occurs

mortal ferry Jan 20, 2020, 9:25 PM

#

yes, but not floating point mults and divs

#

@north stream

#

@elfin gate yeah it's literally the two lines calculating x2 and y2.

#

everything else is basically 0

#

On a 128x128 oled, they take a cumulative 69ms per frame, or 4.2us per calculation

#

420 cycles on a 96M Teensy. That seems like a lot for a processor with an FPU

rocky igloo Jan 20, 2020, 9:28 PM

#

@mortal ferry What's the problem? Is it converting corner points to equations that define lines?

mortal ferry Jan 20, 2020, 9:28 PM

#

It converts corners to lines, and then uses the property that a point must be on the "correct" side of each line in the polygon to be inside it

rocky igloo Jan 20, 2020, 9:29 PM

#

Yes I understand how it works. What part are you having trouble with?

mortal ferry Jan 20, 2020, 9:30 PM

#

I'm not totally understanding how the "correct" side of each line is determined

#

And if I use the included code for visual basic, I don't understand this line "ppx and ppy are in an array of points where (j) is 1 minus (i)"

rocky igloo Jan 20, 2020, 9:34 PM

#

If you go around the square and define the endpoints of lines in order, the "correct" side will always have the same sign. Ie, if you're defining the line as connecting (x1,y1) with (x2,y2), define those points in the order you visit them going around the square.

#

Clockwise, all the points inside will have one sign (positive I think but it's trivial to test) and counterclockwise it'll be the opposite.

mortal ferry Jan 20, 2020, 9:35 PM

#

How does one determine the correct sign at the start? Whether they should all be positive or negative?

#

Ah, I get you

#

Hmm, the trick is that I'll need to calculate the vertices of the rectangle, which I can do just one per loop, but I'll need to ensure they have that counterclockwise listing

rocky igloo Jan 20, 2020, 9:36 PM

#

I think that's the gist of it. To define a line, you get to pick which is (x1,y1) and which is (x2,y2). If you're consistent about that, the sign for the test will be the same.

#

Rotation won't change the ordering of the vertices. Assuming you have the points in an array, that order should be ok.

mortal ferry Jan 20, 2020, 9:37 PM

#

I have to make them using the center of the rectangle and the dimensions

#

but the order should stay consistent with that calculation. I'm having to brush up on all this trig haven't used it in a long time

rocky igloo Jan 20, 2020, 9:39 PM

#

I've done graphics for a living and I've been a college math teacher. 😁 Ask away if you get stuck on anything.

mortal ferry Jan 20, 2020, 9:45 PM

#

I see why it's so slow. I forgot that the FPU is optional on the Cortex M4, it actually doesn't have one :/

#

hence uber slow

north stream Jan 20, 2020, 9:46 PM

#

Will an integer approximation suffice?

mortal ferry Jan 20, 2020, 9:46 PM

#

Yeah I'm not going for precision at all here

#

rough rotated rectangle is fine

#

what would be the best way to achieve that? just a big multiplier on the sin output?

north stream Jan 20, 2020, 9:48 PM

#

Yes, I think that was what LadyAda was getting at when she mentioned fixed point.

rocky igloo Jan 20, 2020, 9:48 PM

#

For sure .The main thing is doing one integer multiply and an add and a compare per point.

#

The corners are insignificant. The pixel test is what matters.

mortal ferry Jan 20, 2020, 9:49 PM

#

So in my lookup table should I just do cos_lookup[i] = cos(i_fl/57.2958)*65535, then divide down post multiplication?

#

stored as 16b

rocky igloo Jan 20, 2020, 9:50 PM

#

Looks like that would work.

#

Sometimes you can notice a difference between rounding and truncating,

fluid wagon Jan 20, 2020, 9:53 PM

#

Good afternoon all

#

is there a way to have Adafruit's WiFiNINA coexist with the Arduino WiFiNINA? or, is the Adafruit Version compatible with Arduino.cc boards?

mortal ferry Jan 20, 2020, 9:55 PM

#

hmm something has gone very wrong

rocky igloo Jan 20, 2020, 9:57 PM

#

Sounds like a good first step.

mortal ferry Jan 20, 2020, 9:57 PM

#

Nope was just a cast issue! Working great now, super fast!!

#

man what a relief

#

thanks so much for your help @rocky igloo @north stream @daring marsh

daring marsh Jan 20, 2020, 10:00 PM

#

@mortal ferry i have 'use' of a 3d cube renderer - if i can set the colors for each side...

#

is that possible with yr code

mortal ferry Jan 20, 2020, 10:00 PM

#

3D cube renderer? Woof maybe at some point.

#

I'd definitely need a more generalized polygon function. I'm just using this for my fork of Uncannyeyes right now.

#

I assume you'd want that in full perspective and everything.

vast cosmos Jan 20, 2020, 10:26 PM

#

its amazing the speedup ILI9341_t3 gains without even using DMA. im really struggling here trying to understand how

hasty dawn Jan 20, 2020, 10:27 PM

#

Using an Adafruit Feather M4 Express compatible with Arduino IDE (https://cdn-learn.adafruit.com/downloads/pdf/adafruit-feather-m4-express-atsamd51.pdf) Needing to write flash storage to store a string of data and then access that storage at a later time. With no EEPROM on the feather, what protocols are possible to use for this? Is flash read/write cycling going to be an immediate issue?

north stream Jan 20, 2020, 10:29 PM

#

Should be good for 100k cycles, but be careful of partial page writes, which can do full page writes if you just change one byte.

lost jetty Jan 20, 2020, 11:13 PM

#

Does anyone have any code chunk examples that would add time setting functionality to an RTC clock sketch? Or a clock setting setup?

north stream Jan 20, 2020, 11:21 PM

#

I found some clock setting software that embedded the time it was compiled and set the clock to that. I thought that was inelegant, so I used Firmata to let a host program send the time to a sketch. https://gitlab.com/bodger/plotclock

GitLab

John Rehwinkel / plotclock

My own version of software to set and operate the plotclock originally designed by Johannes Heberlein, AKA Joo.

lost jetty Jan 20, 2020, 11:25 PM

#

I'm looking for the example sketch I used for the project... revisiting it because the clock time is off from actual time...

fierce aurora Jan 20, 2020, 11:48 PM

#

following up on my questions/troubles of this morning... is it possible that i have a feather huzzah that is, for lack of a better word, "corrupting" the USB/serial port on my macbook?

mortal ferry Jan 21, 2020, 12:42 AM

#

got a little demo going

📎 IMG_2552.MOV

#

@fierce aurora I've certainly had the drivers on my mac fail before. It's usually the only time I ever see my mac "crash" - happened two times this week, actually.

#

does restarting fix your problem?

flat latch Jan 21, 2020, 1:35 AM

#

owo!

last breach Jan 21, 2020, 4:59 AM

#

Hi! Does anyone have experience working with the Bluefruit 32u4 and Bluefruit control app?

pine bramble Jan 21, 2020, 6:16 AM

#

@fair reef https://github.com/technoblogy/serpente-core/blob/master/samd/variants/serpente/variant.cpp#L43

#

also:

#

https://github.com/adafruit/circuitpython/blob/master/ports/atmel-samd/boards/serpente/mpconfigboard.h#L6

fair reef Jan 21, 2020, 11:07 AM

#

Oops, huh

#

https://serpente.solder.party/r2/schematics_plug_c.png

#

I was using this, and have used the wrong labels then

fierce aurora Jan 21, 2020, 12:15 PM

#

@mortal ferry Yes, in fact restarting is this ONLY thing I've found that gets the serial connection working again. But as of now I'm starting to suspect one particular huzzah board may be the problem. I have multiple boards here, and it seems that I can unplug/replug all of them with no problem, except for this one board. More testing to come.

acoustic nebula Jan 21, 2020, 12:18 PM

#

check if it's a CH340 vs CP2112/4 issue

#

different USB->Serial chips with different drivers

odd fjord Jan 21, 2020, 12:50 PM

#

the Huzzah uses a CP2104 USB-serial bridge. @fallen linden did you end up install thing the SILAB driver?

#

are you using the ESP8266 or ESP32 Huzzah?

#

https://learn.adafruit.com/adafruit-feather-huzzah-esp8266/using-arduino-ide

#

@fallen linden ah - sorry -- I just read back further -- sounds like you have it working - in general. Just one board behaving badly. I have had issues with the CP2104 chip failing on ESP8266 feather Huzzahs in the past -- a few years ago now -- but in those cases, the chip went up in smoke 😦 .

#

some history, but as noted in the last post of this thread, a design change was made to hopefully have resolved this. https://forums.adafruit.com/viewtopic.php?f=57&t=116221&hilit=+cp2104

fallen linden Jan 21, 2020, 1:29 PM

#

@odd fjord and others... I have two seemingly identical huzzahs here. one works as expected. the other connects with the serial/usb port name of "/dev/tty.usbserial-017C83A0" which is not the expected name, and confuses the IDE (won't upload). Also, when this trouble huzzah is unplugged no other similar device can be connected until a reboot.

#

@acoustic nebula The two huzzahs appear identical. Is it possible that similar board models might have different serial chips?

odd fjord Jan 21, 2020, 1:32 PM

#

That is a strange port name for an ESP8266 -- I have tried a few (esp8266 and ep32) and all come up with tty.SLAB_USBtoUART

#

on my esp8266 - the chip is near the reset button -- you can read SIL2104 on it

#

📎 image0.jpg

acoustic nebula Jan 21, 2020, 2:21 PM

#

I thought you might be working with other brands of dev boards. From Adafruit, they should all be the same.

north stream Jan 21, 2020, 2:23 PM

#

Mostly the same, the link jerryn posted states that the power supply wiring was changed in 2018 (although the schematic on the tutorial page is still the original one). They do, however, still use the same chips.

fallen linden Jan 21, 2020, 2:43 PM

#

@acoustic nebula @north stream Thanks.

upper rune Jan 21, 2020, 7:41 PM

#

so lets say i have an array: int myArray[] = {} how would i append something to the array??

mortal ferry Jan 21, 2020, 7:53 PM

#

@upper rune that is not a safe operation in C or C++, arrays in those languages are of a fixed size and cannot be expanded on the fly.

#

you could use something like a C++ vector, but in general, you tend not to have data structures that expand and contract like that in embedded programming. It's usually better to try and think of a different approach to the problem.

upper rune Jan 21, 2020, 7:58 PM

#

ok

mild elk Jan 21, 2020, 9:16 PM

#

I wanted to build a small radio with oled screen. I wrote a code that initializes the radio chip, and then writes "Hello world" on the display. When I upload it though, I only get clicking in the headphones and no picture on screen. I worked out that display.print("Hello world"); is the line that causes problems. Any ideas what's wrong?

north stream Jan 21, 2020, 9:27 PM

#

I'd first look at pin/bus contention

#

Then I'd look at memory issues (screen drivers often eat up a lot of memory)

pine bramble Jan 21, 2020, 9:30 PM

#

Dude's, dudettes. I'm stuck with something and I have been busy with it for God knows how long. How do I read a string that an Arduino prints???

#

My program code:

#

void loop() {
  Serial.println("hello");
delay(5000);
}

#

I'm using Java.

north stream Jan 21, 2020, 9:32 PM

#

You can use the serial monitor, or just open the serial port and read from that.

pine bramble Jan 21, 2020, 9:33 PM

#

I have to send it to a Java app.

north stream Jan 21, 2020, 9:33 PM

#

Can you have the Java app open the serial port and read it itself, or do you need middleware?

mild elk Jan 21, 2020, 9:33 PM

#

@north stream the screen is connected properly, because when I comment out the radio code it works fine
Also I doubt there is memory issue, the IDE reports 50% RAM and FLASH free

north stream Jan 21, 2020, 9:33 PM

#

I get that the screen is connected correctly, but perhaps it and the radio are competing for some particular resource.

pine bramble Jan 21, 2020, 9:34 PM

#

I can do that. I tried it too, but the methods are so confusing. I get wrong output. I tried using the JSSC library

north stream Jan 21, 2020, 9:36 PM

#

I'm not familiar with the JSSC library, but I'm guessing it's overkill. Just open the port as a file, then attach a stream to it and read from the stream.

#

import java.io.BufferedReader;
import java.io.FileReader;

BufferedReader in = new BufferedReader(new FileReader("/dev/usbserial1412"));

pine bramble Jan 21, 2020, 9:39 PM

#

I tried that but I think I did it wrong

north stream Jan 21, 2020, 9:40 PM

#

The only tricky part is setting the port speed, but there are ways around that.

#

Well, that, and dealing with handing the port off between your app and the Arduino IDE which also uses it to download code.

#

I'll admit I'm rusty on this (haven't played with it in a while), so I could well be omitting something important

#

A little poking around reveals that there's a javax.comm.SerialPort package that supports setting things like the port speed.

#

I haven't used it, however.

pine bramble Jan 21, 2020, 9:50 PM

#

Tried all the libraries

north stream Jan 21, 2020, 10:06 PM

#

That's one of the reasons I'm fond of low level approaches (like FileReader).

pine bramble Jan 21, 2020, 10:13 PM

#

I could also save the values in a file, then read it with Java but I would like to have a direct connection

north stream Jan 21, 2020, 10:26 PM

#

A direct connection seems like something worth doing.

subtle tree Jan 21, 2020, 11:20 PM

#

I'm struggling a little bit with some code and was hoping someone could take a look at it and see what I'm doing wrong. I'm trying to take a reading off of a salinity sensor, taking 15 readings, and averaging them and then printing the results to the serial monitor. At the moment I just have it hooked up to a photoresistor in place of the salinity sensor to make things easier to diagnose. Unfortunately I'm unable to get any readings from my serial monitor aside from "0.00", but can't figure out why. It's probably something easy but having stared at the code for over an hour I just need someone else to look at it and diagnose my stupidity.

#

int salinity_power_pin = 4; // Digital I/O pin, Global variable void setup() { Serial.begin(9600); pinMode (salinity_power_pin, OUTPUT); } void loop() { int salinity_input_pin = A3; // Analog input pin int n = 15; // number of readings to average float salinity; // Average reading is a float salinity = sensor_reading_ave(salinity_power_pin, salinity_input_pin, n); Serial.println (salinity); } // ------------------------------------------------- float sensor_reading_ave(int power_pin, int input_pin, int nave) { float ave, sum; digitalWrite(power_pin, HIGH); // Turn sensor on delay (100); // Wait to settle sum = 0.0; for (int i; i<=nave; i++) { sum += analogRead(input_pin); // Accumulate the sum delay(10); // Pause, briefly } digitalWrite(power_pin, LOW); // Turn sensor off ave = sum/float(nave); // Compute average return ave; }

cedar mountain Jan 21, 2020, 11:55 PM

#

For what it's worth, the code looks sane to me. Do you have a multimeter or something to verify that your analog input is not actually 0?

subtle tree Jan 22, 2020, 12:25 AM

#

I can run a completely different program that I used in the past to get analog reading from the photoresistor and that's pumping out sane values, so it's not my connection

#

The second I change the value for sum = 0.0; I start getting different values so I'm thinking it has something to do with that?

#

granted it's again just a repeated value and not fluctuating like one would expect with a photoresistor

surreal pawn Jan 22, 2020, 12:27 AM

#

what's your circuit?

subtle tree Jan 22, 2020, 12:28 AM

#

digital pin 4 treated as my input voltage, in series with resistor and photoresistor and analog pin 3 for a voltage divider with ground being the Arduino

#

I can take a picture if that doesn't make sense

surreal pawn Jan 22, 2020, 12:30 AM

#

pin A3, or pin 3?

subtle tree Jan 22, 2020, 12:30 AM

#

I think my issue is that it's not actually taking an analog reading and it's just adding 15 sum= values and then averaging that?

#

Pin A3

surreal pawn Jan 22, 2020, 12:31 AM

#

your code looks ok but I don't have an arduino handy to try it on

subtle tree Jan 22, 2020, 12:33 AM

#

No worries, even just taking a look at it and saying that it makes sense helps me a bit. Makes me feel less insane since from what I can tell it should function fine. The fact someone else thinks so too takes some stress off

#

Thank you c:

surreal pawn Jan 22, 2020, 12:34 AM

#

@subtle tree this seems like what you described but doesn't make sense to me

📎 unknown.png

#

More sensible analog voltage circuit

📎 unknown.png

subtle tree Jan 22, 2020, 12:38 AM

#

I have the second one in use at the moment

#

I just described it poorly

subtle tree Jan 22, 2020, 3:31 AM

#

I had to change for (int i; i<=nave; i++) to for (int i=0; i<=nave; i++) and it worked

surreal pawn Jan 22, 2020, 3:32 AM

#

I wish arduino had more warnings enabled by default. it'd catch stuff like that

#

huh, platformio doesn't catch that

#

well, the default build options don't but the "inspect" option does find it

cedar mountain Jan 22, 2020, 3:37 AM

#

@subtle tree Oh, man... kicking myself for missing that. Good catch!

pine bramble Jan 22, 2020, 8:43 AM

#

🌲

float sensor_reading_ave(int power_pin, int input_pin, int nave) {
// float ave, sum;
float ave = 0.0;
float sum = 0.0;

@subtle tree

#

Always initialize when you (define and) declare. Especially Arduino IDE coding environment. ;)

#

Yeah I totally missed the for (int i; .. business, as well.
I write that correctly, almost every time, but I've seen that happen before (recently) and should be keeping a sharper lookout for it. ;)

#

(again: always initialize when you declare ;)

pine bramble Jan 22, 2020, 10:46 AM

#

🌤️
@red steeple it may be the path to the compiler. The full error log will be helpful - turn on all warnings and compile a blank sketch.

#

(see #hug-reports for origin of this thread ;)

#

basically you can download the github repository for the arduino core (for SAMD).

#

https://github.com/adafruit/ArduinoCore-samd

#

Check both open and closed Issues in that repository for hints on what's going on.
I use gitk here to review recent commits, when I get stuck for troubleshooting ideas.

#

The new compiler rejects a lot of code (and/or I've turned on additional warnings, lately ;)

#

So more orange messages seen. Could be the way I'm using the IDE (haven't in a few weeks, now, except briefly with well-trodden code I just wanted to tweak).

#

🛩️
@fair reef
I used this approach ('this' meaning, as follows!) to get the SPI flashROM working on the new STM32 board (early adopter):
https://github.com/wa1tnr/Cortex-Forth-STM32F4x/blob/master/Cortex-Forth-STM/src/flash_ops.cpp#L52

#

Basically the technique is to examine the source and create new #defines that weren't already provided.

pine bramble Jan 22, 2020, 11:29 AM

#

https://termbin.com/nnzb

#

variant.cpp always enumerates all pins in D0, D1, D2 .. order.

#

Cross-reference it with the CircuitPython version, if there's any confusion.

#

In my #define (in the termbin at nnzb there) I'm using the D0, D1, D2 type pin names (they're just integers; the D part is implied but isn't in the code, only in the comments).

#

This worked for a new board from Adafruit on a new chip architecture I'd never looked at, prior.

#

So to port from someone's outside SAMD21 board should be a cakewalk. ;)

fair reef Jan 22, 2020, 1:25 PM

#

@pine bramble, hi, the approach you used no longer compiles, as far as I can tell:
no matching function for call to 'SPIClass::SPIClass(int, int, int, int)'
And I'm trying to use SPIFlash.pins() instead but I can't interpret the class definitions very well.
Thank you for all the material; I think I'll have the correct pin definitions for Serpente now. It's just configuring the code.

fallen linden Jan 22, 2020, 4:14 PM

#

Finally seem to have this serial/usb port thing sorted out. Now that I can play around with this little variety of boards I have here I have this first observation: the feather LORA (M0?) seems MUCH faster than the feather Huzzah (ESP8266). !!!

burnt sluice Jan 22, 2020, 4:56 PM

#

The Itsy Bitsy M4 has a 3V power output pin. Does that pin need to be enabled if not using USB power? (reference: https://learn.adafruit.com/introducing-adafruit-itsybitsy-m4/pinouts)

north stream Jan 22, 2020, 4:57 PM

#

The enable pin has a pull-up resistor so it's enabled by default.

#

The 3V output pin is connected to the same regulator that powers the rest of the circuitry

burnt sluice Jan 22, 2020, 5:01 PM

#

Thanks, @north stream.

pine bramble Jan 22, 2020, 8:10 PM

#

@fair reef This compiles fairly cleanly (well enough to compile and upload to the target):
https://preview.tinyurl.com/tnr-dviba-42
which is the diff of:
https://github.com/wa1tnr/conversations/blob/master/arduino/hardware/serpente-core/samd/variants/serpente/variant.h#L124

#

I don't own serpente hardware so I was not able to test any of my ideas on the hardware itself.

#

[upstream] Source listed here:
https://github.com/wa1tnr/conversations/blob/master/arduino/0-Distribution.d/technoblogy/uri.txt

hexed agate Jan 22, 2020, 8:41 PM

#

Has anyone used the arduino SoftwareSerial Invert param successfully with RX data?

#

rx gives me gibberish, tx works fine, digital invert works, scope decodes also ,wondering if its a bug before I setup a test

wraith current Jan 22, 2020, 10:00 PM

#

@hexed agate I've used it to receive data from an ultimeter weather station at 2400 baud using a metro mini board

fair reef Jan 23, 2020, 12:29 AM

#

@pine bramble,
thank you for all your time in this. I've tried this, and while it does compile, its fails to open the root dir:
https://gist.github.com/phunanon/01da2c5b2bb43ffcf8a1c00243e9275e

#

I just transplanted the #define's into there

lusty bear Jan 23, 2020, 2:04 AM

#

I'm facing this problem while trying 'sdfat_circuitpython' example code from 'Adafruit_SPIFlash' library. Can anybody help me fix this? I'm using Adafruit Feather M0 Basic by the way.

📎 Screenshot_from_2020-01-22_17-57-42.png

#

And for information. I already load the circuitpython .uf2 before running the sketch.

📎 Screenshot_from_2020-01-22_17-54-32.png

north kelp Jan 23, 2020, 2:21 AM

#

@lusty bear I'd also ask that in #help-with-circuitpython (but I know the example code is in Arduino). It may be that the M0 Basic doesn't have enough flash.

lusty bear Jan 23, 2020, 2:28 AM

#

@north kelp Thanks for replying. That is a possible reason. Is it possible to turn M0 basic to M0 express by adding external flash? If it is is there any tutorial that I can follow? I'm asking this because the board are essentially the same, and I saw somewhere that someone hack the Trinket M0 and change it to Trinket M0 express by adding an external flash.

#

I want to try doing this "upgrade" but I dont know how

north kelp Jan 23, 2020, 2:29 AM

#

That would likely be difficult. I'd suggest just getting an M0 Express.

lusty bear Jan 23, 2020, 2:38 AM

#

unfortunately I cant because I dont have the money to get M0 Express, and I kind of have a dateline in the project that I'm trying to develop. Anyway thanks for replying. If you have any idea or suggestion please do tell. Thank you👍

north kelp Jan 23, 2020, 2:46 AM

#

@lusty bear A less expensive option might be the ItsyBitsy M0 Express:
https://www.adafruit.com/product/3727

Adafruit ItsyBitsy M0 Express - for CircuitPython & Arduino IDE

What's smaller than a Feather but larger than a Trinket? It's an Adafruit ItsyBitsy M0 Express! Small, powerful, with a rockin' ATSAMD21 Cortex M0 processor running at 48 MHz - ...

#

What's your goal with the flash?

#

How much storage do you need?

#

Does it need to be accessible as a drive on a PC?

#

Are you just using it for logging?

lusty bear Jan 23, 2020, 3:04 AM

#

My goal is to store a few small audio file and play it through the DAC pin of the M0. I have not consider how much I needed yet probably 2MB++. It doesnt have to be but it will be easier if it is accessible. Im using it to store audio file and open it to play the speech recorded.

#

yeah I have already consider the itsybitsy, but unfortunately the shipping will be too late for me

flat latch Jan 23, 2020, 3:09 AM

#

.oO( Wonder if there are any .mod players for arduino. 😉 )

pine bramble Jan 23, 2020, 7:43 AM

#

Hey everybody I am looking for tutorials on how to setup things like a UART or SPI or digitalWrite etc etc.
By that I mean low level stuff. Register stuff. I understand things like arduino make it easier to use.
I did look for some libraries from the arduino code. Also I have barebone Atmel328p chip with some hardware components to flash it.
I used Atmel Studio to flash it.
But I need some cool tutorials or a course that explains stuff about datasheets and on how to program stuff like this.

#

And by stuff like this I mean. Starting from sratch to learn on how to develop and code "drivers", drivers like writing to EEPROM or setting up SPI

#

Would be awesome if someone knew a good course or tutorial.

#

Most of the stuff on the internet makes it easier to program. But I want to learn more about under the hood.
I am a 4th year electrical engineer so yeah I know a bit of stuff.

wraith current Jan 23, 2020, 9:33 AM

#

@pine bramble https://www.avrfreaks.net/forums/tutorials

AVR Freaks

Tutorials

pine bramble Jan 23, 2020, 10:36 AM

#

@fair reef The opposite approach will bring things closer: remove anything you possibly can from the .ino file .. and locate it in some other file.

What I did was system level (to add a second SPI interface, for the flashROM) and it belongs there, at system level (in variant.h only; that's why I put it there).

#

With the work on the STM I made one or two quick changes and got away with using a #define .. I had the hardware on hand to test and prove the approach, but it's still not complete, as it was a dodge (I just didn't want to do it correctly as that would have been more time consuming).

#

All that said I'm using my skill of 'testing well' (when I take a test in school, I do very well as I 'test well').

#

I don't understand the problem very well, but I understand how language elements are used to address the problem, and I know many of the locations where different sorts of problems get coded to.

#

Also the 'little endian' warnings tell me something isn't quite installed correctly (anymore).

#

I tested against unmodified application code (that makes use of the flashROM) meant for an Adafruit target board, but using the serpente board definition.

#

The commented stuff is correct already.

#

https://github.com/wa1tnr/Cortex-Forth/blob/master/Cortex-Forth/src/flash_ops.cpp#L47

#

The highlighted line is the one meant to be used, and it is used. You can guarantee it'll be used by reorganizing the rest of the code.

past portal Jan 23, 2020, 4:13 PM

#

Before I spend a lot time digging into this, is there some obvious reason the Metro M4 wouldn't be usable as an Arduino ISP? I want to use the same shield I have been using with the Uno (target is programming ATTiny85's).

pine bramble Jan 23, 2020, 4:14 PM

#

@wraith current thanks bro.

north stream Jan 23, 2020, 4:17 PM

#

@past portal You may have voltage level issues if you're running the ATtiny at 5V: the M4 is only 3.3V. Other than that, the M4 should be able to execute the programming algorithm, but if you're using the AVR version of the code, the timing/port manipulation may require some tweaking.

past portal Jan 23, 2020, 4:17 PM

#

thx I'll look into it. The sketch looks portable enough, but I have to think the digital outputs being only 5V is gonna mess up the programming sequence. I'll try to level-shift the Metro M4's ISP-relevant outputs up to the USB-supplied 5V.

tight axle Jan 24, 2020, 1:31 AM

#

Has anybody used the nrf52 arduino bluetooth library as a central scanner for other devices?

I'm attempting to use the example here:

https://github.com/adafruit/Adafruit_nRF52_Arduino/blob/master/libraries/Bluefruit52Lib/examples/Central/central_scan_advanced/central_scan_advanced.ino

To detect if my iPhone or iPad are within sensing distance of a Circuit Playground Bluefruit. I get MAC addresses back in the scan, but none of them appear to be any of the Apple devices I've tested around. I'm beginning to wonder if there is something manufacturer specific or some kind of behavior I'm not picking up on?

GitHub

adafruit/Adafruit_nRF52_Arduino

Adafruit code for the Nordic nRF52 BLE SoC on Arduino - adafruit/Adafruit_nRF52_Arduino

surreal pawn Jan 24, 2020, 1:37 AM

#

https://security.stackexchange.com/a/202893

Information Security Stack Exchange

MAC randomization for Bluetooth?

Companies, governments, etc. can track Bluetooth and WiFi network scans passively by looking at a same MAC address over space and time (Bluetooth/WiFi Identity tracking in public spaces - How to di...

#

@tight axle ^

tight axle Jan 24, 2020, 1:46 AM

#

Well, that's good, but I'm going to have to rethink my approach now. Was wanting to change some LED colors when I got close to the device, but I couldn't see the name in the scan so was going for MAC.....hmm

north kelp Jan 24, 2020, 3:03 AM

#

@tight axle It's a bit complex, but possible, if you compile and load a custom iOS app onto your iPhones/iPads/iPods. Here are some resources:
https://learn.adafruit.com/crack-the-code
https://learn.adafruit.com/adafruit-circuit-playground-bluefruit/advertising-beacon

Adafruit Learning System

Create a Bluetooth LE App for iOS

Learn how to make a Bluetooth Low Energy App for iOS using Swift.

Adafruit Learning System

Adafruit Circuit Playground Bluefruit

Circuit Playground Bluefruit: Everything amazing about Circuit Playground, now with the power of Bluetooth!

#

An iOS app implementing Apple's iBeacon functionality can be woken up by a nearby BLE device advertising with the iBeacon standard. It's probably possible to then have that iOS app send a message to the CPB; I'd try using BLEUart to start.

https://learn.adafruit.com/adafruit-circuit-playground-bluefruit/ble-uart-controller

Adafruit Learning System

Adafruit Circuit Playground Bluefruit

Circuit Playground Bluefruit: Everything amazing about Circuit Playground, now with the power of Bluetooth!

fluid wagon Jan 24, 2020, 5:53 AM

#

Hello all

#

Anyone familiar with the arcada library?

surreal pawn Jan 24, 2020, 7:30 AM

#

eh

calm crown Jan 24, 2020, 9:38 AM

#

someone know something about eagle

#

?

#

need to draw arduino uno in eagle

noble fjord Jan 24, 2020, 10:31 AM

#

i am trying to be able to see which led is blinking on and off can some one help with it i got the blink code just right but i need tell when it blinking off and on threw searile montor just not sure how to write in code i need to tell what two leds are doing if posable

calm crown Jan 24, 2020, 10:47 AM

#

@noble fjord just download arduino under control

#

GWergKermeme

noble fjord Jan 24, 2020, 11:00 AM

#

were

calm crown Jan 24, 2020, 1:20 PM

#

idk, search on net for it

#

GWergKermeme

odd fjord Jan 24, 2020, 1:24 PM

#

@fluid wagon The only project I have played with that uses arcada is https://github.com/adafruit/Adafruit_Learning_System_Guides/tree/master/M4_Eyes I have not dug into it, but there may be useful examples in it.

fluid wagon Jan 24, 2020, 1:25 PM

#

Well, I tried out the pybadge test that uses it

#

However, it is unable to see my feather (it apparently detects wireless)

#

my airlift featherwing

#

Now, I tested the featherwing using wifinina and it works just fine on the pybadge

#

so I am confused 😉

#

My guess, is that arcada is looking for an ESP32 set up like on a metro m4 airlift, but, I have no leads. The docs for arcada simply say arcada.HasWiFi is checking for it, and it is failing in this case.

#

Wanted to make sure I wasn't missing anything before I asked in a bug report on arcada

#

Note: I even went and upgraded the ESP32 firmware on the featherwing to the latest

odd fjord Jan 24, 2020, 1:34 PM

#

hmm -- I see that for the Pyportal Titano it pulls in WIFININA, but not for the PyBadge. https://github.com/adafruit/Adafruit_Arcada/blob/master/Boards/Adafruit_Arcada_PyPortalTitano.h#L3

#

and it sets it up here https://github.com/adafruit/Adafruit_Arcada/blob/master/Adafruit_Arcada.cpp#L155

#

perhaps you just have to #include <WiFiNINA.h>

#

it's not clear to me, but you've worked with this -- are you telling it where to find your airlift -- somehow it has to get to here https://github.com/adafruit/WiFiNINA/blob/master/src/WiFi.h#L265

#

excuse me if I'm telling you things you already know...

fluid wagon Jan 24, 2020, 2:09 PM

#

Not at all I appreciate the help

#

Let me try adding the WiFiNINA library

#

Honestly I figured since Arcada was looking for wifi it pulled it in under the hood

#

Since this seems to be a library similar to that pyportal one that abstracts all the things away

#

Nope, still failed

#

And dang, adding a speaker to the pybadge makes it loud 😉

odd fjord Jan 24, 2020, 2:13 PM

#

at first glance it looks like it does that for the PyPortal but not for the PyBadge -- somehow needs to be made aware its there...

#

somehow you need to tell it what pins the airlift is using.

fluid wagon Jan 24, 2020, 2:14 PM

#

yeah, that just occurred to me

#

let me copy in the pin defs for the featherwing

#

Ok, so I copied in the wifinina pin defintions

#

and that did not work

#

Unfortunately, arcada abstracts away the Wifi config it appears

odd fjord Jan 24, 2020, 2:17 PM

#

😦

fluid wagon Jan 24, 2020, 2:18 PM

#

if (!arcada.hasWiFi()) { Serial.println("AirLift WiFi module not found"); arcada.display->setTextColor(ARCADA_YELLOW); arcada.display->println("WiFi FAILED"); } else { Serial.println("AirLift WiFi module found!"); arcada.display->setTextColor(ARCADA_GREEN); arcada.display->println("WiFi OK!"); }

#

that is the relevant code

#

and all I see regarding it

#

it is checking if it is present, but the check fails

odd fjord Jan 24, 2020, 2:19 PM

#

I think that ties back to here https://github.com/adafruit/Adafruit_Arcada/blob/master/Adafruit_Arcada.cpp#L155

#

what code are you trying to run on the pybadge-- do you have a link to it?

fluid wagon Jan 24, 2020, 2:20 PM

#

It is the demo from the arcada library

#

in the examples

#

the pybadge board test

#

So, I defined SPIWIFI

#

I added

#

#define SPIWIFI SPI // The SPI port #define SPIWIFI_SS 13 // Chip select pin #define ESP32_RESETN 12 // Reset pin #define SPIWIFI_ACK 11 // a.k.a BUSY or READY pin #define ESP32_GPIO0 -1

#

And my defines are before where the arcada object is created.

odd fjord Jan 24, 2020, 2:23 PM

#

taking a look -- I hav a Pybadge and airlift handy

#

so I see the WIFI FAILED ....

fluid wagon Jan 24, 2020, 2:24 PM

#

Yes

#

However, I verified on the pybadge that the airlift works

#

by using the wifinina scan networks sketch

#

(with the correct pin defs)

#

So, I know the device functions

#

I mean, technically, for this sketch it doesn't REALLY matter. but, if I want to work with Arcada in the future, I need to know it works with all the hardware 😉

odd fjord Jan 24, 2020, 2:33 PM

#

I'm wondering if you set up WIFININA independently --the it will pass the WIFI.Status() test ... trying....

#

ah -- just ralozed I have the Arduino WifiNina lib installed not Adafruit fork -- re installing

fluid wagon Jan 24, 2020, 2:45 PM

#

Yeah, I've done that more than once

#

So, I declared wifi.setpins in the setup, and, included the pin defs for the airlift featherwing, still no joy

unborn gyro Jan 24, 2020, 4:36 PM

#

hi, i'm here to ask a question about a wemos D1 mini and a dht11 on blynk if someone can help me

north stream Jan 24, 2020, 4:43 PM

#

Some people know about the D1, some people know about the DHT11, and some people know about Blynk. Depending on where your problem is, some folks might be more able to help than others. However, without knowing what the problem is, someone seeing that description might overlook it if they don't know about all three of those.

unborn gyro Jan 24, 2020, 4:49 PM

#

i'm trying to put a sensor dht11 on blynk with a di mini but i don't found a real tuto or explanation to code the D1, i'm a begginner so ... i'ts hard to found were is the problem and how to solve it

odd fjord Jan 24, 2020, 4:51 PM

#

@fluid wagon I am baffled as to why the arcada test for .hasWifFi is failing but looking at the code, Its not clear why it even bothers to check since it never uses WiFi. I can connect to t my AP fine by independently configuring Wifi and then let arcada do it's thing. I would like to understand why the test fails, but at least all the pieces work... Is there something that is making WiFI.status() within the arcada code not the same scope as WiFi.status() from the main program? It passes in the main program. but fails in the arcada check....

north stream Jan 24, 2020, 4:52 PM

#

It seems like you have three different issues, and it's probably better to solve them one at a time than attempt to address all of them at once. One issue is "how to code the D1", one is "how to talk to the DHT11 from the D1", and one is "how to integrate Blynk with the D1".

unborn gyro Jan 24, 2020, 4:52 PM

#

@north stream i'm using this code https://github.com/beegee-tokyo/DHTesp/blob/master/examples/DHT_ESP8266/DHT_ESP8266.ino to use the DHTesp.h, now, i have to make it connected on my wifi and send the data on blynk

GitHub

beegee-tokyo/DHTesp

Optimized DHT library for ESP32/ESP8266 using Arduino framework - beegee-tokyo/DHTesp

north stream Jan 24, 2020, 4:53 PM

#

It looks like that code should work for the D1, talk to the DHT11, and report its readings. Does that part work?

unborn gyro Jan 24, 2020, 4:54 PM

#

the code is working when i verify

north stream Jan 24, 2020, 4:54 PM

#

So you've effectivelly worked past the first two problems, and now want to send the data you're getting via Blynk?

unborn gyro Jan 24, 2020, 4:54 PM

#

but i don't remember how to see the result on a sreen

north stream Jan 24, 2020, 4:55 PM

#

It should show up on the serial monitor (magnifying glass icon in the Arduino IDE)

tight axle Jan 24, 2020, 4:55 PM

#

@north kelp thanks, I'll check those out, I was hoping to just have the playground passively scan and react as I leave and return, but I can checkout the app route too.

unborn gyro Jan 24, 2020, 4:55 PM

#

@north stream

📎 unknown.png

#

i don't know why... i'll try to change my cable

fluid wagon Jan 24, 2020, 4:56 PM

#

@odd fjord I have no idea myself. And I know the test does nothing with the wifi except detection in the board test

#

however, while I havent looked at the arcada docs in depth, I imagine it has functionality to use the wifi it is supposed to be reporting.

#

Sure, we can build around the broken bits...

#

but, I was curious why it was failing

odd fjord Jan 24, 2020, 4:58 PM

#

I've been looking, but not finding anything -- but it may be burried in something I don't understand...

fluid wagon Jan 24, 2020, 4:59 PM

#

nods I appreciate your help all the same. At least it confirms that it is not a problem between the keyboard and the chair.

odd fjord Jan 24, 2020, 4:59 PM

#

I did find that is works with tinyUSB or Arduino USB ....

fluid wagon Jan 24, 2020, 5:05 PM

#

Well, like I said, it isn't exactly pressing, just...very very annoying that we cannot figure out the why of it

odd fjord Jan 24, 2020, 5:06 PM

#

agreed

fluid wagon Jan 24, 2020, 5:06 PM

#

The important bits, my board works fine, I know the featherwing works fine from additional testing

#

So the hardware is ok

unborn gyro Jan 24, 2020, 5:24 PM

#

Well, i have a problem on ALL of the tuto, when i use de DHT.h library like all the guy on the tuto, i have an issue panic: runtime error: invalid memory address or nil pointer dereference
[signal 0xc0000005 code=0x0 addr=0x0 pc=0x7855fb] ... on the D1mini

north stream Jan 24, 2020, 5:29 PM

#

Sounds like either something is uninitialized, or a bug in the library

fluid wagon Jan 24, 2020, 5:29 PM

#

There are also a number of DHT libraries

#

are you sure you are using one that works on the esp8266?

unborn gyro Jan 24, 2020, 5:31 PM

#

yes, i have deleted all the library and try to install only one

#

... it's working now.... ok ...

#

but i can't send the code on the D1 mini

north stream Jan 24, 2020, 5:47 PM

#

So, it compiles but you can't upload? Or what?

unborn gyro Jan 24, 2020, 5:47 PM

#

still have "not packet response

#

warning: espcomm_sync failed
error: espcomm_open failed
error: espcomm_upload_mem failed
error: espcomm_upload_mem failed on v2.4

north stream Jan 24, 2020, 5:48 PM

#

Do you have the serial port set correctly (your screen shot earlier appeared to be COM1 which doesn't seem likely to be correct)?

unborn gyro Jan 24, 2020, 5:48 PM

#

set on COM1

#

when i plug the board, it's wrintten on the botton of the IDE

#

https://media.discordapp.net/attachments/537365760008257569/670310764455919626/unknown.png?width=822&height=676 it had this issue on the lastest version

#

holly s.... i found the problem -_-'

odd fjord Jan 24, 2020, 5:57 PM

#

@fluid wagon I got it to pass -- had to add a few defines into the arcada library

fluid wagon Jan 24, 2020, 5:58 PM

#

Nice @odd fjord !

#

sounds like you need to do a pull request 😛

odd fjord Jan 24, 2020, 6:00 PM

#

well, not yet -- not sure I really understand it -- but in the arcada library in Adafruit_Arcada.cpp I added ```
#include <Adafruit_Arcada.h>
#include <SPI.h>
#include <WiFiNINA.h>
#define SPIWIFI SPI // The SPI port

fluid wagon Jan 24, 2020, 6:01 PM

#

I thought defines were global though

odd fjord Jan 24, 2020, 6:02 PM

#

I did as well, but apparently not.

unborn gyro Jan 24, 2020, 6:03 PM

#

@north stream thanks for your help, i have found the problem and this is the issue: deleted all the other files using the DHT.h shortcut and moving the board on the usb of my tower instead of using the usb on my keyboad, i don't know why it doesn't work but COM 5 was added aftert this change, i have also changed my wire at the same time so... keyboard or wire??? i'll see this issue later 😄

#

thanks for your time

#

@fluid wagon too ^^ thanks a lot

odd fjord Jan 24, 2020, 6:07 PM

#

@fluid wagon so now if I configure Wifi before starting Arcada it reports WiF OK -- If I do not, it reports WiFi Failed -- so it does seem to work.

fluid wagon Jan 24, 2020, 6:08 PM

#

That doesn't make sense to me. I mean, if it works, it works...but I'd like to know why.

#

feels a bit bad for setting @odd fjord off on a mission.

odd fjord Jan 24, 2020, 6:10 PM

#

no worries -- I have learned a lot -- and still more to figure out... all good stuff

#

I'm going to think about it and try a few more things - then I'll file an issue

fluid wagon Jan 24, 2020, 6:11 PM

#

Thank you again for your help

#

Did you get the ATECCs installed?

#

(note: the resistors are hell to solder in my experience)

odd fjord Jan 24, 2020, 6:12 PM

#

No -- too many other projects in states of partial completion....

fluid wagon Jan 24, 2020, 6:13 PM

#

I know that feeling

#

See: Pybadge

odd fjord Jan 24, 2020, 6:13 PM

#

📎 image0.jpg

fluid wagon Jan 24, 2020, 6:14 PM

#

Excellent!

#

After wrestling with wifinina adafruit vs arduino, I've been trying to avoid customizing libraries so I dont clobber my changes by accident

odd fjord Jan 24, 2020, 6:15 PM

#

Agreed -- only do it for testing -- off to a different project

fluid wagon Jan 24, 2020, 6:15 PM

#

Thanks again!

odd fjord Jan 24, 2020, 6:16 PM

#

Glad to help -- I had fun!

odd fjord Jan 24, 2020, 7:34 PM

#

@fluid wagon aha -- feeling better -- now the only change to the libaray code needed is to add the includes/defines to Boards/Adafruit_pyBadge.h ```
#ifndef ARCADA_PYBADGE_M4
#define ARCADA_PYBADGE_M4
#if defined(ADAFRUIT_PYBADGE_M4_EXPRESS)
#include <Adafruit_LIS3DH.h>
#include <Adafruit_ST7735.h>
#include <SPI.h>
#include <WiFiNINA.h>
#define SPIWIFI SPI // The SPI port

added the last 3 lines --   now I just do the setup of WiFiNINA in the main program but it passes the test if WiFi is configured and fails if it is not.   These includes/defines are all included into arcada.h and thenerefor into the main sketch and everyone is happy....

#

I'm still not convinced it is of any use since I cant find anything that arcada actually uses wifi for!

mortal ferry Jan 24, 2020, 10:19 PM

#

I'm looking to do some simple embedded infrared image work on Arduino. Is this still the best camera to get for that kind of thing? https://www.adafruit.com/product/1386

Miniature TTL Serial JPEG Camera with NTSC Video

This tiny little camera module can be a pretty neat project addition, it is just like our other JPEG cameras (same chipset/software), but much smaller and slimmer. It was designed to be used ...

cunning jacinthBOT Jan 24, 2020, 10:19 PM

#

Miniature TTL Serial JPEG Camera with NTSC Video

Price: 35.95
In Stock: in stock
ID: 1386

fluid wagon Jan 25, 2020, 12:34 AM

#

@odd fjord Sorry, sleep had called

cedar mountain Jan 25, 2020, 4:56 AM

#

Can you point us to the tutorial you're following and where you're hitting the point of confusion?

#

So it looks like you just want to connect the button between pin 7 and ground, so that when pressed it will pull the input low and trigger the recording.

#

Do you get any messages on the serial console?

#

Ah, your code has REC_BUTTON as 10 for some reason instead of 7 as in the version you linked above.

#

Gotcha. So the button is actually hooked to 10?

#

It probably doesn't make a difference, but which ground connection are you using for the button?

#

Yeah, I'm running out of obvious things to check. You might add a print statement to loop() just so you can see that it's actually running and not crashed somehow. If you have a multimeter you can check that pin 10 reads high, and whether your button actually pulls it to ground.

fluid wagon Jan 25, 2020, 5:29 AM

#

What MCU are you using?

#

the code is using the internal pullup for the button, are you sure pin 10 on your MCU has one?

#

Microcontroller unit

#

what processor

#

Ok, then it should have one

#

may need to debounce the button

cedar mountain Jan 25, 2020, 5:37 AM

#

The pin should always be pulled high, it just goes low and records while the button is pressed, then stops when you release it.

#

Or it should, anyway. If it's not printing the filename, it may have crashed in accessing the SD card.

#

Well, you said it doesn't print a filename.

pine bramble Jan 25, 2020, 11:56 AM

#

Question does the wire library have a 32 byte max read restriction? I am using a esp32 with a at24C256 chip thats a i2c eeprom chip

#

It jas 64 byte per page read

fair reef Jan 25, 2020, 12:16 PM

#

Hello,
I'm still unable to get SPI Flash working on the Serpente R2 board. I can't understand why it won't work - as far as I can tell, all the correct pins are being used. SERCOM3 is used for SPI Flash on this board.
https://gist.github.com/phunanon/01da2c5b2bb43ffcf8a1c00243e9275e
This is my sketch which isn't working. It always prints: "open root failed"

elder hare Jan 25, 2020, 3:37 PM

#

I have some UV strips on a 12v adapter, i want to control the ON/OFF state with an arduino! What would i need for that?

fallen linden Jan 25, 2020, 4:21 PM

#

I'm trying to drive a 1.2inch 7 segment LED backpack from a Feather Huzzah. It's not working. My first question is, is this even doable? Should I be able to drive this display with this board?

cedar mountain Jan 25, 2020, 4:31 PM

#

I think the backpack uses an I2C interface, right? That should be able to be driven with almost anything.

fallen linden Jan 25, 2020, 4:39 PM

#

@cedar mountain Yes, that's my thought. Also, there's 5V available to drive the thing. But I just wanted to start with the simplest possible explanation of the failure. Thanks.

cedar mountain Jan 25, 2020, 4:40 PM

#

I don't see pullups on the Huzzah schematic, though, so you may need to add those to the I2C pins.

fallen linden Jan 25, 2020, 4:40 PM

#

I've worked with these I2C LED backpacks before. But always with regular Arduino boards.

#

What form would that take? A resistor from the I2C pins to 3.3V?

cedar mountain Jan 25, 2020, 4:41 PM

#

Yes, one on each pin. Typically 2K-10K.

fallen linden Jan 25, 2020, 4:41 PM

#

I'll give that a try. Thanks

cedar mountain Jan 25, 2020, 4:46 PM

#

Hang on. It looks like the LED backpack already has pullups on its side, so that shouldn't be necessary. But it is a 5V board, so you might have some trouble with 3.3V levels on the Huzzah. Unfortunately you might need a level-shifter or other intermediate hackery.

fallen linden Jan 25, 2020, 5:32 PM

#

I've given it 5V from the USP pin on the huzzah (and confirmed with my meter that it's getting 5). This page https://learn.adafruit.com/adafruit-led-backpack/1-2-inch-7-segment-backpack-arduino-wiring-and-setup talks about running the I2C with 3.3. I believe I've wired mine as described on this page.

Adafruit Learning System

Adafruit LED Backpacks

Control small LED matrices with ease

cedar mountain Jan 25, 2020, 5:44 PM

#

Gotcha. The schematic doesn't seem to show a separate IO line (sigh), but I see it on the layout, so that should be okay.

elder hare Jan 25, 2020, 6:05 PM

#

on a power adapter is the white striped side of the cable negative or posetive? :S im confused...

swift widget Jan 25, 2020, 8:04 PM

#

I need to start measuring power consumption. I bought an Arduino Power Shield (to charge and use battery wit Metro M4). Turns out that I also have a few sensors and an Ethernet shield, and now it look like the charger can't charge the battery unless the MetroM4 is also plugged in for power. I think I am right at the level where the power balance between charging and battery powering the board is negative.

#

Anyone have similar power challenges with the shield? (this one: https://www.adafruit.com/product/2078)

cedar mountain Jan 25, 2020, 8:31 PM

#

Offhand that sounds surprising, since it'd be hard to have your boards pulling more than 500mA without a long string of LEDs or something. Are any of your sensors particularly high-power?

fallen linden Jan 25, 2020, 9:16 PM

#

On a Huzzah is there some code/configuration I have to do to make pins 4 & 5 behave as I2C lines? or does the library take care of it for me?

odd fjord Jan 25, 2020, 9:53 PM

#

@fallen linden what device are you trying to talk to via I2C -- I think you need to #include <Wire.h> in general but the the library should do the rest

wraith current Jan 25, 2020, 10:22 PM

#

@elder hare usually positive but not always.

elder hare Jan 25, 2020, 10:38 PM

#

can someone help me here, im not pro at this struct thing and im totaly lost right now right now im getting this error

Animator::record_type Animator::StripSettings [8]' is private```

and if i write public: on it i get this

```invalid use of non-static data member 'Animator::StripSettings```

class Animator {

typedef struct {
pattern ActivePattern; // which pattern is running
direction Direction; // direction to run the pattern
int TotalSteps; // total number of steps in the pattern
uint16_t Index; // current step within the pattern
unsigned long lastUpdate; // last update of position
byte Red, Green, Blue; // RGB Colors
byte Red2, Green2, Blue2; // RGB 2 Colors
int Delay; // User Delay
uint8_t gHue = 0; // Rotating "base color" used by many of the patterns
int Pattpos; // Current Pattern Position
int Spacing; // Spacing between LEDs (in some patterns)
} record_type;

record_type StripSettings[STRIPS_DEFAULT]; // Make Array of the struct

};

wraith current Jan 25, 2020, 10:44 PM

#

@elder hare wish I could help but I never use structs

elder hare Jan 25, 2020, 10:45 PM

#

:/

#

anyone else?

#

@north stream you got any idea?

north stream Jan 25, 2020, 10:55 PM

#

Typedefs don't work particularly well in C++, might work better to skip the typedef and use ```c
struct record_type StripSettings[STRIPS_DEFAULT];

elder hare Jan 25, 2020, 10:57 PM

#

hmm :S i got this

field 'StripSettings' has incomplete type

north stream Jan 25, 2020, 10:58 PM

#

Change the definition to ```c
struct record_type {

elder hare Jan 25, 2020, 11:00 PM

#

still same error :S

north stream Jan 25, 2020, 11:02 PM

#

Are the definitions for all the member types (pattern, uint8_t, etc.) in place?

elder hare Jan 25, 2020, 11:02 PM

#

yupp

#

@north stream what are you thinking?

fallen linden Jan 25, 2020, 11:10 PM

#

@odd fjord I'm trying to fun the sevenseg sample sketch on a Feather Huzzah, connected to a 1.2in 7 segment display. #include wire.h IS there.

#

@odd fjord Also, using the wiring described in "Arduino Due and Other 3.3v Processors" on this page: https://learn.adafruit.com/adafruit-led-backpack/1-2-inch-7-segment-backpack-arduino-wiring-and-setup

Adafruit Learning System

Adafruit LED Backpacks

Control small LED matrices with ease

north stream Jan 25, 2020, 11:19 PM

#

I'm thinking it's an incomplete type because ... the ... type ... is ... incomplete?

elder hare Jan 25, 2020, 11:23 PM

#

im not following xD haaa

north stream Jan 25, 2020, 11:29 PM

#

I think it's saying it doesn't have the information it needs. In other words, one of the definitions it depends on is not already defined at that point.

north stream Jan 26, 2020, 1:42 AM

#

Formatted with a different file system?

swift widget Jan 26, 2020, 3:40 AM

#

@cedar mountain Yes, surprising to me as well. I have digital temp and magnet sensors, and analog light sensor - none are high powered. Ethernet board supposed to pull 135mA, Metro 50mA. The battery charger can still power board if under 250mA, so not sure what's up. Hence need for a proper power meter. Next purchase, I suppose.

rocky igloo Jan 26, 2020, 4:16 AM

#

@elder hare Is this still an open problem? I just made a sketch with the code you posted and it compiles fine. If it helps, we could compare notes and see what else you're doing.

lusty bear Jan 26, 2020, 9:57 AM

#

📎 Capture.JPG

#

Im having trouble formatting my spi flash memory

#

Anyone have any solutions?

pine bramble Jan 26, 2020, 12:23 PM

#

The newer ~~compiler~~ updated stuff complained about previously working code; I filled in the empty square braces with a zero and it stopped complaining.
@elder hare @rocky igloo

pine bramble Jan 26, 2020, 1:01 PM

#

https://github.com/wa1tnr/Cortex-Forth/commit/edb6cef0d2bd7282c4aba74d607902718dc17e9b

#

bugfix'd line:
https://github.com/wa1tnr/Cortex-Forth/blob/master/Cortex-Forth/Cortex-Forth.ino#L113

#

I think the newer ~~compiler~~ updated stuff does new error checking the old one did not.

elder hare Jan 26, 2020, 1:18 PM

#

@rocky igloo you still here?

fallen linden Jan 26, 2020, 1:29 PM

#

UPDATE on my troubles trying to drive a 7-segment display with a Feather Huzzah. I changed out the Feather with a plain vanilla Arduino Uno. Same sketch, same wiring. Works totally as expected. Display lights up and does its thing. So there's something I'm not understanding about the Huzzah. @cedar mountain @odd fjord

odd fjord Jan 26, 2020, 1:31 PM

#

hmm -- as was mentioned earlier, there is a difference in that the UNO is 5V and the esp8266 3V -- are you powering the display with 5V? -- if so, you may need to level shift the I2C signals up to 5V -- but it looks like the IO pin should do that for you.

#

but if you power it from 5V, the 3V I2C signals may not be able to control it

#

I see it needs 5V but is the IO pin connected to 3V?

#

@fallen linden sorry for this confusion -- I am confused about which LED module you have -- is it the 8x8 ors the 7 segment -- It looks like the 8x8 can (and should) be run at 3.3V on the Huzzah. the 7 segments have the extra IO pin....and need 5V pu the IO pin should be a 3.3V

#

now I see you said 7-segment, but is it the 1.2inch or .56inch -- the 1.2 has the IO pin, I think and the .56 does not. I think the .56 can be run from 3.3V

fallen linden Jan 26, 2020, 1:52 PM

#

It's the 1.2. I was powering the "+" pin on the display from the "USB" pin on the Feather. The docs, and my meter, said that was providing 5V. I was connecting the IO pin to 3.3V as that was my interpretation of the docs. I was basing my choices on the "and Other 3.3v Processors" wiring spec on the Adafruit learning page for the display.

odd fjord Jan 26, 2020, 1:53 PM

#

that sounds correct to me.

fallen linden Jan 26, 2020, 1:54 PM

#

the "wiring and setup" section for the 1.2 learning page seems to say you can drive it with 3.3 I2C. Go figure.

#

I can live, and make progress on my project using the Uno. So I'm good for now. But I'm gonna continue to try and figure this out. Thanks for your help.

odd fjord Jan 26, 2020, 1:55 PM

#

It is confusing -- I only have the .56 versions and have not had any problems with them.

pine bramble Jan 26, 2020, 5:31 PM

#

Hi everybody quick question. Is it possible to have a encrypted or secret partition on my microsd card? And read that with esp32. I already tested the normal file operations and that works. But I wanted to read that encrypted partition from the microsd card

#

Using spi

#

The main question is. Is it possible to read and write to a encrypted partition.

#

Ofcourse decrypt it read and write them encrypt it

burnt island Jan 26, 2020, 5:40 PM

#

hmm, I don't think the libraries know how to deal with more than 1 partition, encrypted or not. I suspect that you'd have to find the partition and read/write raw sectors yourself.

pine bramble Jan 26, 2020, 5:41 PM

#

Hmmm oke oke. Well esp32 has aes builtin mayby I can use that. Or use password protected folders. Dont know if the libs support that?

burnt island Jan 26, 2020, 5:52 PM

#

password protected folder don't exist on FAT filesystems, so you'd be in your own doing something custom again

north stream Jan 26, 2020, 6:04 PM

#

It's certainly possible, but as folks have pointed out, it would take a fair amount of coding. Another approach that may or may not suit your use case is just to encrypt data before storing it in files.

weary wharf Jan 26, 2020, 6:41 PM

#

I am new to coding on a an arduino. I am working on an animatronics project and was wondering how to code a pneumatic?

pine bramble Jan 26, 2020, 8:31 PM

#

@north stream aright cool. Can I encrypt html pages and css files?

#

I want when a request is made to the webserver to handle incoming data and public key. Then use that to public key and the secret key stored inside eeprom. To decrypt html pages and cssnfiles and send it back to the user aka admin that requested the page

#

The first part I handle easy. But the part to decrypt big files I dont get. Because I think the buffer wouldn be enough or am I wrong

#

Or would it be better to use ssl cert?

#

Or ssl and this method

elder hare Jan 26, 2020, 8:40 PM

#

This pattern works when i set it one by one on each strip but if i select "All Strips" (7 in total) my nodeMCU just goes FU and restarts / freezes

   static void juggle(int CSI) {

    for (int i = 0; i < NLPS; i++) {
    fadeToBlackBy(Strip[CSI], NLPS, 20);
    }
    
    byte dothue = 0;
    for(uint8_t i = 0; i < 8; i++) {
        Strip[CSI][beatsin16( i + 7, 0, NLPS-1 )] |= CHSV(dothue, 200, 255);
        dothue += 32;
    }
    Function::ShowAnimation();
    }

i controll the nodeMCU via Blynk App where i select from a dropdown meny 1 to 7 strip and 8 is (All Strips) and is then handled by this in the main loop();

   static void Run() {

     unsigned long curtime = millis(); // Current Millis Time

     for (ICS = 0; ICS < NS; ++ICS) {

       if(APPSS == NS) { CS = NS; } else { CS = ICS; }
      
         if (curtime > SSET[ICS].lastUpdate) {       
           SSET[ICS].lastUpdate = curtime + SSET[CS].Delay;
         
             switch (SSET[CS].ActivePattern){
               case SOLIDCOLOR: SolidColorUpdate(CS); break;
               case RAINBOW: RainbowUpdate(CS); break;
               case THEATERCHASE: TheaterChaseUpdate(CS); break;
               case THEATERCHASERAINBOW: TheaterChaseRainbowUpdate(CS); break;
               case JUGGLE: juggle(CS); break;
               default: break;
             }
           
             Function::Increment(CS);
         }
       }
   }

pine bramble Jan 26, 2020, 8:47 PM

#

I think it cant switch between strips in a for loop.

#

Mayby try sequential

elder hare Jan 26, 2020, 8:47 PM

#

all of my patterns works perfectly but not this one

pine bramble Jan 26, 2020, 8:48 PM

#

Then look for whats different

#

I use the rmt of esp32

#

For driving the neopixels

elder hare Jan 26, 2020, 8:49 PM

#

i use fastLED

pine bramble Jan 26, 2020, 8:49 PM

#

Hmm is it possible to have a array of strips?

elder hare Jan 26, 2020, 8:49 PM

#

yea it is and i have

pine bramble Jan 26, 2020, 8:49 PM

#

Do you get compile error?

#

Ok

elder hare Jan 26, 2020, 8:50 PM

#

no compile error, as stated i can set the pattern one by one on each strip

#

but on the "All Strips" option my nodeMCU just freezes / restarts

pine bramble Jan 26, 2020, 8:50 PM

#

Then print some stuff in that for loop

#

I think it can be done but not that way

#

Haha

#

Is nlps evertime the same?

#

On each strip

elder hare Jan 26, 2020, 8:52 PM

#

yea each strip has 28 LEDs (NLPS = Num Leds Per Strip)

odd fjord Jan 26, 2020, 8:52 PM

#

@elder hare how are you powering the neopixels -- is the juggle function using more power (more white for example) could be a power issue.

elder hare Jan 26, 2020, 8:52 PM

#

oh i have plenty off power ❤️ using a 5V 12A PSU 🙂 i can put everystrip on white ffull brightness without problems 🙂

odd fjord Jan 26, 2020, 8:53 PM

#

ah -- just a guess ...

elder hare Jan 26, 2020, 8:53 PM

#

sure sure 🙂

pine bramble Jan 26, 2020, 8:54 PM

#

I think its memory issue because if csi is higher or than nlps then it doesnt matchnright

#

Or is that code ok

#

The nodemcu only goes to restart freeze mode because of 2 or more pheriphals are talking to each other

#

That creates conflict

#

Thus restaty

elder hare Jan 26, 2020, 8:56 PM

#

ah

#

i just tested by setting the pattern on each strip one by one so that ALL where running the same pattern (juggle) and it does run without crashing but when trying to set "all strips" to that pattern it crashes so hmmm

pine bramble Jan 26, 2020, 8:56 PM

#

Try to recode that all code section litte bit different

#

Orrr

#

You can use the second core if you have a esp32

odd fjord Jan 26, 2020, 9:01 PM

#

@elder hare just a thought -- I am used to seeing for loops as for (i=0;i<n;i++) but you have ++i I'm trying to think if that will cause any issues....

#

the index will pre increment -- may be "off by one"

#

could be going out of range...

elder hare Jan 26, 2020, 9:02 PM

#

let me try and switch it

#

hmm still nothing :/

#

or rather it still freezes / restarts

odd fjord Jan 26, 2020, 9:08 PM

#

oh well -- just looks odd to me -- I've never seen ++i in a for loop.

cedar mountain Jan 26, 2020, 9:08 PM

#

The preincrement versus postincrement won't matter, since that just changes the return value of the expression, not what happens to i itself in the loop.

elder hare Jan 26, 2020, 9:13 PM

#

im still confused as to why this doesn't work

#

so i did some serial print in the juggle pattern to see what was going on right befor the freeze

#

   static void juggle(int CSI) {

    for (int i = 0; i < NLPS; ++i) {
    fadeToBlackBy(Strip[CSI], NLPS, 20);
    Serial.print("LED is faded to black :");
    Serial.println(i);
    }
    
    byte dothue = 0;
    for(uint8_t i = 0; i < 8; ++i) {
        Strip[CSI][beatsin16( i + 7, 0, NLPS-1 )] |= CHSV(dothue, 200, 255);
        Serial.print("Juggle Ball : ");
        Serial.println(i);
        dothue += 32;
    }
    Function::ShowAnimation();
    Serial.println("Function : Show Animation");
    }

i selected "all strips" and selected the juggle pattern and watched the serial monitor and got this

LED is faded to black :0
LED is faded to black :1
LED is faded to black :2
LED is faded to black :3
LED is faded to black :4
LED is faded to black :5
LED is faded to black :6
LED is faded to black :7
LED is faded to black :8
LED is faded to black :9
LED is faded to black :10
LED is faded to black :11
LED is faded to black :12
LED is faded to black :13
LED is faded to black :14
LED is faded to black :15
LED is faded to black :16
LED is faded to black :17
LED is faded to black :18
LED is faded to black :19
LED is faded to black :20
LED is faded to black :21
LED is faded to black :22
LED is faded to black :23
LED is faded to black :24
LED is faded to black :25
LED is faded to black :26
LED is faded to black :27
Juggle Ball : 0
Juggle Ball : 1
Juggle Ball : 2
Juggle Ball : 3
Juggle Ball : 4
Juggle Ball : 5
Juggle Ball : 6
Juggle Ball : 7
Function : Show Animation

i got this 7 times and that is correct as i have 7 strips in total and at the end off the last "Function : Show Animation" the nodeMCU just stops responding but i dont see ANYTHING on the LED strips at all...

odd fjord Jan 26, 2020, 9:29 PM

#

can you post the code that is calling this? Does it return from the last call?

#

ah -- is it the code above?

elder hare Jan 26, 2020, 9:32 PM

#

yea 🙂

#

you see the print statements inbetween

odd fjord Jan 26, 2020, 9:33 PM

#

but you may want to check to see it it actually returns from each call to juggle -- especially the last - just trying to pin down where it really crashes.

#

put some prints in Run()

elder hare Jan 26, 2020, 9:36 PM

#

doing it right now 🙂

elder hare Jan 26, 2020, 9:51 PM

#

sooooo

#

i tested run on each strip like this

Strip Test : 6
1 Pass : OK
2 Pass : OK
3 Pass : OK

#

the nodeMCU stops working on Strip 7

#

should look like this

LED is faded to black : 0
LED is faded to black : 1
LED is faded to black : 2
LED is faded to black : 3
LED is faded to black : 4
LED is faded to black : 5
LED is faded to black : 6
LED is faded to black : 7
LED is faded to black : 8
LED is faded to black : 9
LED is faded to black : 10
LED is faded to black : 11
LED is faded to black : 12
LED is faded to black : 13
LED is faded to black : 14
LED is faded to black : 15
LED is faded to black : 16
LED is faded to black : 17
LED is faded to black : 18
LED is faded to black : 19
LED is faded to black : 20
LED is faded to black : 21
LED is faded to black : 22
LED is faded to black : 23
LED is faded to black : 24
LED is faded to black : 25
LED is faded to black : 26
LED is faded to black : 27
Juggle Ball : 0
Juggle Ball : 1
Juggle Ball : 2
Juggle Ball : 3
Juggle Ball : 4
Juggle Ball : 5
Juggle Ball : 6
Juggle Ball : 7
Function : Show Animation
Strip Test : 6
1 Pass : OK
2 Pass : OK
3 Pass : OK

#

but Strip 7 get's to here

LED is faded to black : 0
LED is faded to black : 1
LED is faded to black : 2
LED is faded to black : 3
LED is faded to black : 4
LED is faded to black : 5
LED is faded to black : 6
LED is faded to black : 7
LED is faded to black : 8
LED is faded to black : 9
LED is faded to black : 10
LED is faded to black : 11
LED is faded to black : 12
LED is faded to black : 13
LED is faded to black : 14
LED is faded to black : 15
LED is faded to black : 16
LED is faded to black : 17
LED is faded to black : 18
LED is faded to black : 19
LED is faded to black : 20
LED is faded to black : 21
LED is faded to black : 22
LED is faded to black : 23
LED is faded to black : 24
LED is faded to black : 25
LED is faded to black : 26
LED is faded to black : 27
Juggle Ball : 0
Juggle Ball : 1
Juggle Ball : 2
Juggle Ball : 3
Juggle Ball : 4
Juggle Ball : 5
Juggle Ball : 6
Juggle Ball : 7
Function : Show Animation

and then stops.... so it doesn't run the Run(); on strip 7 befor it crashes

rocky igloo Jan 26, 2020, 9:58 PM

#

@elder hare Sorry I wasn't online this morning. I'd suspect an array bounds problem, maybe the return address from the function call getting overwritten. Could beatsin16() return a value that's out of range maybe?

elder hare Jan 26, 2020, 9:58 PM

#

actualy i was just thinking the same @rocky igloo

#

as it fails on Strip 7

elder hare Jan 26, 2020, 10:22 PM

#

Strip Test : 0
All 28 LED is faded to black.
All 8 Juggle Balls are out
Function : Show Animation
1 Pass : Loop through each LED Strip
2 NS Pass : 7
3 Pattern Pass : 5
 
Strip Test : 1
All 28 LED is faded to black.
All 8 Juggle Balls are out
Function : Show Animation
1 Pass : Loop through each LED Strip
2 NS Pass : 7
3 Pattern Pass : 5
 
Strip Test : 2
All 28 LED is faded to black.
All 8 Juggle Balls are out
Function : Show Animation
1 Pass : Loop through each LED Strip
2 NS Pass : 7
3 Pattern Pass : 5
 
Strip Test : 3
All 28 LED is faded to black.
All 8 Juggle Balls are out
Function : Show Animation
1 Pass : Loop through each LED Strip
2 NS Pass : 7
3 Pattern Pass : 5
 
Strip Test : 4
All 28 LED is faded to black.
All 8 Juggle Balls are out
Function : Show Animation
1 Pass : Loop through each LED Strip
2 NS Pass : 7
3 Pattern Pass : 5
 
Strip Test : 5
All 28 LED is faded to black.
All 8 Juggle Balls are out
Function : Show Animation
1 Pass : Loop through each LED Strip
2 NS Pass : 7
3 Pattern Pass : 5
 
Strip Test : 6
All 28 LED is faded to black.
All 8 Juggle Balls are out
Function : Show Animation
1 Pass : Loop through each LED Strip
2 NS Pass : 7
3 Pattern Pass : 5

#

so everything gets set for every strip but it just can't run it :S after the last "Strip Test : 6" the nodeMCU goes offline

#

as mentioned i feel it has something todo with this line
Strip[CSI][beatsin16( i + 7, 0, NLPS )] |= CHSV(dothue, 200, 255);

#

as you said to @rocky igloo

#

but to me it looks totaly fine :S i can't see why it would fail as it can run on single strips

#

also i can set all 7 to that pattern and it will run :S

#

so im confused

rocky igloo Jan 26, 2020, 10:31 PM

#

@elder hare I'm not following the flow of the program (just not feeling super sharp today) but you could try substituting something else into that line, even if it breaks how the animation works, just to see if it stops the hanging.

elder hare Jan 26, 2020, 10:42 PM

#

Proof that it works fine when i do them 1 by 1 :P

📎 JPEG_20200126_234155.jpg

rocky igloo Jan 26, 2020, 10:48 PM

#

So what's different in how the program runs when you do them one by one vs selecting them all? I'm trying to scroll back and look at the different snips you've posted but I'm not seeing where you do that.

north stream Jan 27, 2020, 2:40 AM

#

@pine bramble Yes, you can encrypt anything you want – you just need to decrypt it again before using it.

warm token Jan 27, 2020, 2:52 AM

#

Arduino noob here, just to make sure I understand correctly, for a USB host (like a PC) to send/receive runtime (not programming) commands to an Arduino, must this always be done via UART, even over the USB interface?

north stream Jan 27, 2020, 2:53 AM

#

Yes, the USB interface is actually a USB-to-serial chip, that then communicates with the Arduino CPU serially using a UART on the CPU.

warm token Jan 27, 2020, 2:54 AM

#

Ah interesting, so it's basically got a built-in version of those USB-to-UART-header-dongle things.

#

Is the interface to an Arduino always via UART even for programming?

north stream Jan 27, 2020, 2:56 AM

#

Yes, there's a program on the CPU known as a "bootloader" that accepts serial instructions to program a sketch onto the chip's onboard flash memory. This is one of the key pieces that makes the Arduino easier than some of the things that came before it: the built-in USB-serial converter and the bootloader that lets it program itself.

warm token Jan 27, 2020, 2:56 AM

#

That's awesome, thanks!

cyan jasper Jan 27, 2020, 8:55 PM

#

Hey anyone happen to know why i might be having issues with flashing esp8266 with arduino? If i dont manually cut power off and back on i always get invalid head of packet (0x72) (with auto reset on) and if i reset manually i get same error but different hex code.

#

Here is console dump if that helps in any way.

Serial port COM6
Connecting........_____....._____....._____....._____....._____....._____....._____
Traceback (most recent call last):
  File "~somewhere in my pc~\Local\Arduino15\packages\esp8266\hardware\esp8266\2.6.3/tools/upload.py", line 65, in <module>
    esptool.main(cmdline)
  File "~somewhere in my pc~/AppData/Local/Arduino15/packages/esp8266/hardware/esp8266/2.6.3/tools/esptool\esptool.py", line 2890, in main
    esp.connect(args.before)
  File "~somewhere in my pc~/AppData/Local/Arduino15/packages/esp8266/hardware/esp8266/2.6.3/tools/esptool\esptool.py", line 483, in connect
    raise FatalError('Failed to connect to %s: %s' % (self.CHIP_NAME, last_error))
esptool.FatalError: Failed to connect to ESP8266: Invalid head of packet (0x72)
esptool.FatalError: Failed to connect to ESP8266: Invalid head of packet (0x72)

#

feel free to ping me

#

OH BTW I somehow managed to put a random code and blink code on this once. Now I'm stuck with blink code

pine bramble Jan 27, 2020, 9:45 PM

#

Hello! I have created a small pseudo vending machine and I have managed to get it to work so when a correct item code is inputted it will display that an item is dispensing on an LCD screen while also lighting up a green LED to confirm that the system has accepted the ID. I have a few item ID's that work however im trying to get the code to display on the LCD which item has been inputted and I am struggling a bit. Any pointers on how i can implement this feature?

#

📎 message.txt

#

attached is my script for the system, any help appreciated!

north stream Jan 27, 2020, 11:10 PM

#

Maybe have something like ```c
lcd.setCursor(18 + position, 0);
lcd.print(whichKey);

pine bramble Jan 27, 2020, 11:12 PM

#

Thanks bud, will give it a try and let you know how it goes after I've made some food :)

buoyant dagger Jan 27, 2020, 11:15 PM

#

Hi there, I'm working on a science project that involves a serial communication with an arduino and my computer over a USB interface. One issue with this, however, is simply the presence of a rigid wire. I've been thinking about how I could overcome this issue, and I was considering using a wifi shield to transfer data to the computer. However, my project requires nearly instantaneous transmission speed of small integers (the USB speed is acceptable). My question is, would the wifi idea provide enough speed to transfer extremely small packets of data (just some integers, strings) as fast as the USB or at least at an unnoticeable difference? Thanks!!

north stream Jan 27, 2020, 11:34 PM

#

I suspect WiFi would be plenty fast. You could also look at Bluetooth, which is often used for exactly that (for example, Bluetooth keyboards) with imperceptible lag.

buoyant dagger Jan 27, 2020, 11:39 PM

#

Oo

#

Thanks!

#

Now that the rigid usb is out of the way i guess i just have to manage with the small power jumpers

wraith current Jan 28, 2020, 5:58 AM

#

@cyan jasper those dots and dashes indicate the upload utility trying to initiate the upload but if the board too busy sometimes it can't do it. Try to time the upload with a reset over and over again until it connects and uploads.

cyan jasper Jan 28, 2020, 6:01 AM

#

Really that's the solution? God espressif products suck

wraith current Jan 28, 2020, 8:42 AM

#

@cyan jasper its usually the fault of the user actually. eg. if you upload a program that crashes repeatedly it does that too.

cyan jasper Jan 28, 2020, 8:43 AM

#

Blink example(only delays changed) doesn't work either @wraith current

#

Id like to think there is no crashed

cyan jasper Jan 28, 2020, 11:02 AM

#

@wraith current forgot to mention I'm using sparkfun esp8266 thing its supposed to have auto reset from dtr. Also before giving error it communicates

elder hare Jan 28, 2020, 2:08 PM

#

people who use fastLED do you set RGB colors or HSV colors? 🙂

pine bramble Jan 28, 2020, 3:44 PM

#

is there any particular reason for the serial port to output strange things such as "1h⸮⸮"

#

nothing like this is in my code

#

can drop the code if anyone wants to have a look

surreal pawn Jan 28, 2020, 3:46 PM

#

you're probably connected to the serial port at the wrong baud rate, or you have some electrical reason you're getting noise there

pine bramble Jan 28, 2020, 3:47 PM

#

All my hardware is working correctly so it must be the first one

swift widget Jan 28, 2020, 6:09 PM

#

I have a Adafruit 16x32 RGB LED Matrix display. Quite fun. I was wondering if there is a way to invert pixles on/off when overlapping graphics primitives. Say, there's a solid box, when you pass a solid line through it, the line is inverted (pixels off) as it crosses the box.

📎 unknown.png

#

Please @ me as I'll likely miss the reply otherwise.

pine bramble Jan 28, 2020, 9:49 PM

#

@pine bramble That's what a raw serial port looks like, initially.

#

When it happens during the middle of a conversation, it's usually due to line degredation.

#

Dial-up modems were based on a precarious situation, and line noise strikes were a regular occurance during a session with a dial-up bulletin board system, over the plain-old telephone system network.

#

In general, you can expect to have to send a test message to align the speeds of the two communicating devices so that they agree.

#

Those can be hidden from the view of the human operating the equipment, but will still be present.

#

A weak physical connection (press-fit, didn't solder properly) sometimes exposes itself with similar symptoms. Often specific characters will be written (or read) properly, but not others.

#

When none of them match up (it looks like gibberish, but consistent gibberish) it's usually a speed issue (different baud rates assumed on each end of the conversation; neither making the adjustment to compensate).

#

That's especially true when hardware hacking and the clock frequency wasn't setup correctly.

#

So, if it sometimes works correctly, and sometimes does not, then the baud rates are (usually) correct, as found.

#

If there's initial garbage, but no garbage following, it's usually handshaking that's responsible (initial negotiation).

south canyon Jan 29, 2020, 1:15 AM

#

can someone help me with my arduino

north stream Jan 29, 2020, 2:19 AM

#

Perhaps, but without a particular question, it's hard to tell who has the right knowledge to help.

pine bramble Jan 29, 2020, 10:29 AM

#

@pine bramble Very informative, thank you very much!

#

This is just a general question, are most arduino programs written in C or C++? Any explanation as to why?

#

still pretty new to this stuff lol

woven mica Jan 29, 2020, 10:48 AM

#

Arduino is based on C/C++ libraries, so every arduino program is C/C++. As to why, it is because C is a low level language (close to the hardware).

pine bramble Jan 29, 2020, 11:19 AM

#

Arduino is both a device and a programming environment. The device (an Arduino Uno, for example) can be programmed in any manner whatsoever that the hardware physically allows for.@pine bramble @woven mica

#

Most (not all) implementations will be found are based in the C programming language, or C++.

#

The vendor who makes the chips decides what platforms they are going to support, and pretty much almost everyone follows.

#

Historically that's usually a C Library - that's the form of the vendor's support (and perhaps along with a compiler to work with that library).

#

Aftermarket development environment vendors (Keil, others) tend to support the C programming language (and C++ ) and assembler.

#

Super-end user developers like Adafruit can create entire ecosystems that piggyback on this stuff.

#

So we have CircuitPython as well, which is (essentially) a community-supported after-aftermarket development effort (and environment).

#

CMSIS and ASF impact a lot of end-user type developers.

#

https://electronics.stackexchange.com/questions/418503/difference-between-cmsis-and-asf

#

Arduino IDE was created in part to make use of CMSIS a bit easier for the novice.

#

The real reason Arduino IDE based programming (in C or C++) has market share comes from, I think, the very large number of already-authored hardware support libraries for all those gadgets people want to hang on their projects: accelerometers, temperature sensors, barometers, gyros, TFT color displays, and the rest of it.

#

◽

pine bramble Jan 29, 2020, 12:50 PM

#

@pine bramble again very informative! Cheers bud

elder hare Jan 29, 2020, 12:57 PM

#

anyone here used the Blynk App?

north stream Jan 29, 2020, 1:43 PM

#

I seem to recall you have.

elder hare Jan 29, 2020, 1:54 PM

#

hehe yea but i have a question about it :p

north stream Jan 29, 2020, 3:13 PM

#

You're probably better off asking the actual question instead of if anyone has used it: lots of people have used Blynk, but perhaps not all of them have encountered whichever situation you want to know about.

twin ginkgo Jan 29, 2020, 4:46 PM

#

i need help i cant get the light to blink

#

#include <Adafruit_MCP23017.h>

Adafruit_MCP23017 mcp;

void setup() {
mcp.begin();
for(int i = 0; i <= 15; i++){
mcp.pinMode(i, OUTPUT);
}
}

void loop() {
for(int i = 0; i <= 15; i++){
mcp.digitalWrite(i, HIGH);
delay(500);
mcp,digitalWrite(i, LOW);
delay(1000);
}
}

#

📎 20200129_103104.jpg 📎 20200129_103059.jpg 📎 20200129_103055.jpg

woven mica Jan 29, 2020, 4:48 PM

#

mcp,digitalWrite(i, LOW); should be mcp.digitalWrite(i, LOW);

twin ginkgo Jan 29, 2020, 4:49 PM

#

😠 lol i hope let me try

#

omg thanks

#

that was it

elder hare Jan 29, 2020, 5:36 PM

#

it is possible to run two millis right?

twin ginkgo Jan 29, 2020, 5:37 PM

#

i have a question pin 1 is the one with the . in the corner correct?

#

because the one that says pin 1 i script and says its pin 8 for the pin 1

#

📎 unknown.png

#

is that correct

#

8-15 is going down

#

not up

pine bramble Jan 29, 2020, 6:31 PM

#

@twin ginkgo The pin numbers inside the rectangle are accurate - with the half moon shape at the top, pin 1 is to the upper left. They enumerate down that side, and up the other side, just like your drawing shows.

#

The 0-7 with the up-arrow seems to be describing GPA0 thru GPA7 accurately.

#

http://ww1.microchip.com/downloads/en/DeviceDoc/20001952C.pdf

cedar mountain Jan 29, 2020, 6:37 PM

#

The logical pin mapping in the Adafruit driver is given here: https://github.com/adafruit/Adafruit-MCP23017-Arduino-Library It looks like 8-15 should be GPB0-7, so would be opposite the arrow above.

GitHub

adafruit/Adafruit-MCP23017-Arduino-Library

Contribute to adafruit/Adafruit-MCP23017-Arduino-Library development by creating an account on GitHub.

#

There's physical pin number, the logical pin ID, and the pin assigned name, and none of them match up directly, heh heh.

pine bramble Jan 29, 2020, 6:45 PM

#

C8051F330D - a package I worked with daily, for a few years. Same exact scheme/convention.

From > 10 years ago. ;)

📎 c8051f330D-pinout-b.jpg

twin ginkgo Jan 29, 2020, 6:45 PM

#

ok thanks just making sure i have it correct

pine bramble Jan 29, 2020, 6:46 PM

#

Note that your i2c expander enumerates counter-clockwise whereas mine enumerates clockwise, in terms of what's inside the package (port pin enumerations).

north stream Jan 29, 2020, 6:46 PM

#

@elder hare There's only one master millis() counter, but you can have as many things as you want that depend on it. I have one project that runs 24 channels of dimming from a single millis() value.

elder hare Jan 29, 2020, 6:48 PM

#

@north stream that's my problem :/ im running 2 millis and i see that they are not independent :/

twin ginkgo Jan 29, 2020, 6:48 PM

#

sorry for asking alot of questions still learning but i have an rtc how can i make a light light up at lets say minute (1, 21, 31, 41)

north stream Jan 29, 2020, 6:48 PM

#

@pine bramble, the numbering convention goes even farther back than that: vacuum tubes are numbered the same way, it just appears different because vacuum tube diagrams are normally from the pin (bottom) side.

#

@twin ginkgo There are a few ways, but you'll want to decide when you want to turn your light off as well. If you just want the light to be on for one minute, it's pretty easy.

twin ginkgo Jan 29, 2020, 6:51 PM

#

well when the pacific min hour hour hits i want it to turn on but then when its not that time it turns off

pine bramble Jan 29, 2020, 6:51 PM

#

I would construct a modulo-64 counter and detect when it went > 59 and wrap that back to zero.

#

32 .. 16 .. 8 .. 4 .. 2 .. 1 << six bits

twin ginkgo Jan 29, 2020, 6:53 PM

#

well what i have in mind is every random time something will happen so not at a pacific time in the day and if i want to change the min from lets say 21 to 25 i just have to change the number

#

ill have more then 1 led to light up thats the thing

pine bramble Jan 29, 2020, 6:56 PM

#

n-bit modulo arithmetic:
https://github.com/wa1tnr/Metro-M4-Express-interpreter/blob/master/interpret_m4/interpret_m4.ino#L65

north stream Jan 29, 2020, 6:57 PM

#

I'd probably do something like ```c
bool lastvalue;
int nextminute;

void loop() {
DateTime now = rtc.now();

if (rtc.minute == nextminute) {
if (lastvalue == false) {
digitalWrite(LIGHT_PIN, HIGH);
lastvalue = true;
}
} else {
if (lastvalue == true) {
digitalWrite(LIGHT_PIN, LOW);
lastvalue = false;
}
}
}

twin ginkgo Jan 29, 2020, 6:58 PM

#

yeah just about

north stream Jan 29, 2020, 6:58 PM

#

Or if you don't mind having the CPU just rewriting the pin unnecessarily, you can simplify it considerably: ```c
void loop() {
DateTime now = rtc.now();

digitalWrite(LIGHT_PIN, rtc.minute == nextminute);
}

twin ginkgo Jan 29, 2020, 7:00 PM

#

let me put it easier to put it im making a led clock that has led's for 1,2,3,4 then another row for 5 mins and another row for the hours

north stream Jan 29, 2020, 7:01 PM

#

Ah, if you're sequencing a bunch of LEDs like that, it often makes sense to rearrange the code.

twin ginkgo Jan 29, 2020, 7:01 PM

#

and every so if the time is 1:52 then the 1 led the 50 min led and 2 led would be light up

north stream Jan 29, 2020, 7:01 PM

#

That's where @pine bramble 's modulo code comes in handy.

twin ginkgo Jan 29, 2020, 7:02 PM

#

i dont even know how to do that tho

#

if you can lean a tutorial for me or something

north stream Jan 29, 2020, 7:03 PM

#

Something like ```c
DateTime now = rtc.now();
int finemin = now.minute % 5;
int coarsemin = now.minute / 5;

// now "finemin" will be a number from zero to 4
// "coarsemin" will be a number from 0 to 12

#

There's a useful writeup here https://www.arduino.cc/reference/en/language/structure/arithmetic-operators/modulo/

pine bramble Jan 29, 2020, 7:04 PM

#

The counter simply masks the high bit,
so when it overflows from
0 1 1 1 1 1 1 to
1 0 0 0 0 0 0 instead you get:
0 0 0 0 0 0 0

north stream Jan 29, 2020, 7:06 PM

#

So for your example of 1:52, "minute" would be 52. 52 / 5 = 10 which is which "coarse" minute LED to light. 52 % 5 = 2 which is which "fine" minute LED to light.

pine bramble Jan 29, 2020, 7:06 PM

#

🔺
1 000 000 AND 111 111 = 000 000
in decimal:
64 AND 63 = 0

#

In simpler terms, it preserves the bottom 6 bits and discards the 7th bit (most significant bit; leftmost).

twin ginkgo Jan 29, 2020, 7:09 PM

#

Im sorry im getting confused :(

pine bramble Jan 29, 2020, 7:10 PM

#

In practice that means this counter counts from 0 to 63, then goes back to 0.

#

It's like a car's mileage counter (odometer). It goes back to zero after 999999 right?

twin ginkgo Jan 29, 2020, 7:10 PM

#

Yah

pine bramble Jan 29, 2020, 7:10 PM

#

So this counter goes back to zero after it hits 63.

#

(it counts modulo-64)

#

The face of an analog clock does the same thing, modulo-12.

#

Never gets to 12. Counts from 'zero' to 11.

#

Just take a regular clock face and erase the 12 at the top and write in a 0 instead.

#

modulo-64 is very close to modulo-60.

#

Which was why it came to mind for this application.

twin ginkgo Jan 29, 2020, 7:14 PM

#

Ok thanks il try to work it when i get back home

pine bramble Jan 29, 2020, 7:15 PM

#

Try it modulo-64 first and get confident with that; the 'cheat' to make it work modulo-60 may occur to you while working the example.

#

(Just pretend an hour has 64 minutes in it ;)

twin ginkgo Jan 29, 2020, 7:50 PM

#

Well i want to have the 1-4 separate from every 5 min 5 10 15 20 25 30 ect and its separate from the hours 1-12

north stream Jan 29, 2020, 7:52 PM

#

The code I posted will do that for you.

twin ginkgo Jan 29, 2020, 7:53 PM

#

Ok

reef gull Jan 30, 2020, 7:37 PM

#

Anybody have any resources for animating argb in Arduino? My instinct is to store unique algorithms in functions and then try to store which one to call per loop() cycle. I'd like to avoid an evergrowing if or switch if possible, but maybe that's more optimal in this case.

#

I don't know what the rules of Arduino are yet. This is only my second project using one.

north stream Jan 30, 2020, 7:46 PM

#

LEDs or a display?

reef gull Jan 30, 2020, 8:09 PM

#

Led strips. This is for my staircase project

#

https://cdn.discordapp.com/attachments/221722438503890944/630110354206359574/unknown.png

#

3d render of concept

#

Using the adafruit neopixel DMA library to control them. Just looking for ideas/references on how to store/call animations.

reef gull Jan 30, 2020, 8:31 PM

#

Just found this. Looks like a good place to start.
https://www.tweaking4all.com/hardware/arduino/adruino-led-strip-effects/

Tweaking4All.com

Hans

Tweaking4All.com - Arduino - LEDStrip effects for NeoPixel and FastLED

In this article I'll show you a several LED strip effects for NeoPixel and FastLED. The code works for both libraries and any strip they support (theoretically).

wooden bobcat Jan 30, 2020, 8:46 PM

#

hi everybody.. i want to do gpio register reads similar to the arduino port commands with the adafruit metro express m4 or grand central m4 boards. what is the command to read a gpio register on those boards, specifically IN specifying the proper port? thanks! i’m working in C or C++ in the arduino IDE. a pointer to where i can find this info is good, too.

north stream Jan 30, 2020, 9:44 PM

#

It works the same way, you can read from PORTA and so forth.

#

If you look at the pins_arduino.h, variant.h and WVariant.h files, you can see where the I/O pins and PORTs are defined.

pine bramble Jan 30, 2020, 10:03 PM

#

https://www.arduino.cc/en/Reference/PortManipulation

#

Never seen that in Arduino, before. ;)

#

I was kinda wondering why it was missing.

#

(never occured to me that it wasn't missing, or to ask after it)

wooden bobcat Jan 30, 2020, 10:21 PM

#

@north stream thanks! too easy. used it a lot on arduino...

north stream Jan 30, 2020, 10:25 PM

#

Note: I think the ports on those CPUs are 32 bits wide.

pine bramble Jan 30, 2020, 10:43 PM

#

PORT is 0x4100 8000 in the memory map (Fig 8.1 in the MCU datasheet, on p. 52/2129)

pine bramble Jan 30, 2020, 11:05 PM

#

quote
32.6.2.2 Operation

Each I/O pin Pxy can be controlled by the registers in PORT.

Each PORT group x has its own set of PORT registers, with a base address at byte address (PORT + 0x80 * group index)

(A corresponds to group index 0, B to 1, etc...).

Within that set of registers, the pin index is y, from 0 to 31.*

#

PORTC 4100 8100 (80*2)

wooden bobcat Jan 30, 2020, 11:09 PM

#

right.. the arduino PINx command to read register x won't compile, so i'll need to look at the libraries @north stream suggested. already had the pin mapping.

pine bramble Jan 30, 2020, 11:11 PM

#

This might be right for the base addresses:
PORTA 4100 8000
PORTB 4100 8080
PORTC 4100 8100
PORTD 4100 8180

north stream Jan 30, 2020, 11:18 PM

#

I'm not familiar with PINx, but the code from the header file shows how it's done: ```c
#define digitalPinToPort(P) (&(PORT->Group[g_APinDescription[P].ulPort]))
#define digitalPinToBitMask(P) (1 << g_APinDescription[P].ulPin)

pine bramble Jan 30, 2020, 11:18 PM

#

https://github.com/wa1tnr/CamelForth-SAMD51-SAMD21/blob/master/boards/metro_m4_express/include/instance/port.h#L35

#

Atmel Start has this stuff ^^

#

There's about fourteen registers per PORT (A,B,C,D on PORT).

#

alright that's enough learning for me for today ;)

wooden bobcat Jan 30, 2020, 11:24 PM

#

@north stream

#

@north stream @pine bramble thanks.. got some stuff to chew on now.

pine bramble Jan 30, 2020, 11:28 PM

#

@wooden bobcat If this caught my eye earlier in the day I might obsess on it long enough to suss something about it.
I just went through this (successfully) on STM32F405. ;)

#

fades

wooden bobcat Jan 30, 2020, 11:29 PM

#

@pine bramble 🙂

pine bramble Jan 30, 2020, 11:34 PM

#

https://github.com/wa1tnr/eforth-stm32f4x-a/blob/master/forth.d/working_Blinky-j.fs#L120

wooden bobcat Jan 30, 2020, 11:41 PM

#

@pine bramble this is yours? .../wa1tnr/...

finite reef Jan 31, 2020, 1:16 AM

#

Hello there, I am new here and I recently picked up an arduino and I was playing with ultrasonic sensors for my proximity project. I was trying to understand how this sensor works. I tried to serial print the duration but I am getting this number 59211, is that how long it takes for the sensor the receive the number?

cedar mountain Jan 31, 2020, 1:25 AM

#

Need a little more specific info... what sensor, what library, what duration API call?

finite reef Jan 31, 2020, 1:32 AM

#

The sensor is called HC-SR05 Ultrasonic Distance Sensor by Velleman. I found a sample code to kind of getting an idea what was going on.

const unsigned int TRIG_PIN=13;
const unsigned int ECHO_PIN=12;
const unsigned int BAUD_RATE=9600;

void setup() {
  pinMode(TRIG_PIN, OUTPUT);
  pinMode(ECHO_PIN, INPUT);
  Serial.begin(BAUD_RATE);
}

void loop() {
  digitalWrite(TRIG_PIN, LOW);
  delayMicroseconds(2);
  digitalWrite(TRIG_PIN, HIGH);
  delayMicroseconds(10);
  digitalWrite(TRIG_PIN, LOW);
  

 const unsigned long duration= pulseIn(ECHO_PIN, HIGH);
 int distance= duration/29/2;
 if(duration==0){
   Serial.println("Warning: no pulse from sensor");
   } 
  else{
      Serial.print("distance to nearest object:");
      Serial.println(distance);
      Serial.println(" cm");
  }
 delay(100);
 }

here is the full link: https://create.arduino.cc/projecthub/Nicholas_N/distance-measurement-with-an-ultrasonic-sensor-hy-srf05-64554e

Arduino Project Hub

Distance Measurement with an Ultrasonic Sensor HY-SRF05

Measure the world around you. By Nicholas_N.

cedar mountain Jan 31, 2020, 1:34 AM

#

Gotcha. The pulseIn() returns duration in microseconds, so the code is dividing by 2 for the round trip, and 29 to convert to distance in centimeters.

finite reef Jan 31, 2020, 1:36 AM

#

ooooh

cedar mountain Jan 31, 2020, 1:36 AM

#

So 59211 would be 0.059211 seconds.

finite reef Jan 31, 2020, 1:36 AM

#

okay now that makes sense

#

wow thanks so much

#

so how would I make it to inches or mm for example? I am just learning these so my math is not that good

cedar mountain Jan 31, 2020, 1:40 AM

#

The speed of sound is about 343 meters/second, so if you wanted inches, the speed of sound would be 343 m/s * 39.4 inches/meter = 13514 inches/second, or 0.013514 inches/microsecond. Invert that to get 74 microseconds per inch. So you'd replace 29 with 74 to get inches, which is also the same thing you'd get by just multiplying 29 by 2.54 cm per inch.

finite reef Jan 31, 2020, 1:41 AM

#

Oh wow

#

I see I see, I gotta do some practice with this then haha. Good info man thanks again!

cedar mountain Jan 31, 2020, 1:42 AM

#

No problem, have fun!

twin ginkgo Jan 31, 2020, 3:13 AM

#

i know people was on here helping me but i just could not figure out how to use what they gave me to script what i need but i have an example each number is an led and the marble would be the led thats turned on how can i script one led to turn on when lets say time is :01 and :11 :21 so forth the number 1 led would be light up i have the rtc to track the time

📎 09509c41c8388d2bfdcf81c6b99e847a.png

pine bramble Jan 31, 2020, 3:23 AM

#

@wooden bobcat Yes that's mine.
I'm still not here and will prove that in a moment. ;)
Meanwhile, found this (and implemented it (only once; there are several in that thread)):
https://github.com/wa1tnr/PORT-Manipulation-a/blob/master/port_sketch.cpp#L10

north stream Jan 31, 2020, 4:06 AM

#

@twin ginkgo It's similar to your "display by fives" notion, only now it's "display by tens", and works the same way: ```c
int ones = minutes % 10;
int tens = minutes / 10;

twin ginkgo Jan 31, 2020, 4:07 AM

#

with the ones i only need it to go up to 4

#

and the next one as 5

north stream Jan 31, 2020, 4:11 AM

#

Then the "display by fives" code I posted previously should work for you.

twin ginkgo Jan 31, 2020, 4:12 AM

#

so it would be

#

int ones = minutes % 5;

#

but how would i script the go

#

if (now.minute() == ones)

#

then led on?

#

i been racking my brain and looking at alot of scripts to try to figure it out

north stream Jan 31, 2020, 4:15 AM

#

It depends on how your LEDs are set up. You could do them one at a time like that, but your code would be bulky and difficult to read and maintain.

twin ginkgo Jan 31, 2020, 4:16 AM

#

well each led would be seprate when 01 its the 01 led turns on then 02 then that one goes on till 04 then when 05 hits the leds go out

#

and starts back at 1

#

at 06

#

so the 01 led will turn on for 01 06 11 16 21 26 31 36 41 46 51 56

north stream Jan 31, 2020, 4:19 AM

#

Assuming you had one LED on each of several I/O pins, you could use an array to light them: ```c
#define NUM_ONES_LEDS 4

int onesledpins[] = { 2, 3, 4, 5 }; // LED pin numbers
int ones = minutes % 5;
int led;

if (ones == 0) {
// zero, turn off all LEDs
for (led = 0; led < NUM_ONES_LEDS; ++led) {
digitalWrite(onesledpins[led], LOW);
}
} else {
// not zero, turn on appropriate LED
digitalWrite(onesledpins[ones - 1], HIGH);
}

twin ginkgo Jan 31, 2020, 4:20 AM

#

yeah all leds will be on there own pins

north stream Jan 31, 2020, 4:21 AM

#

Then that code should work for you, just put the LED pin numbers in the onesledpins array where I have 2, 3, 4, 5

twin ginkgo Jan 31, 2020, 4:21 AM

#

would that pull the time off the rtc?

north stream Jan 31, 2020, 4:22 AM

#

No, you'll need other code to do all that, that's just an excerpt that shows one possible way to light the LEDs the way you described. You'd have to get the time from the RTC and then use the minutes where I have minutes in the code

twin ginkgo Jan 31, 2020, 4:24 AM

#

because i would think it would be easier to do like get.minute then use your code to say if (get.minute == ones)

north stream Jan 31, 2020, 4:24 AM

#

You'd just have to change one line ```c
int ones = get.minute % 5;

twin ginkgo Jan 31, 2020, 4:25 AM

#

ok

#

let me try it and see

#

thanks

north stream Jan 31, 2020, 4:25 AM

#

Let us know how it goes

twin ginkgo Jan 31, 2020, 4:25 AM

#

i will do it now

north stream Jan 31, 2020, 4:26 AM

#

It's late here and I'm going to bed, but I'll check in the morning to see if you have any updates or questions

twin ginkgo Jan 31, 2020, 4:26 AM

#

ok thank

twin ginkgo Jan 31, 2020, 4:55 AM

#

ok so i need to put mcp.pinMode into int but its not reconizing the int if i do int onesledpins[] = mcp.pinMode(0, 1, 2, 3);

#

i want to reference the mcp pins in the intigers

fluid wagon Jan 31, 2020, 4:57 AM

#

That statement you have there makes no sense.

#

pinMode sets the pin to either input, or output

#

nothing else

#

(well, pullup settings, but yeah)

#

It doesnt return anything usable for being stored in an array

twin ginkgo Jan 31, 2020, 4:58 AM

#

so i can still do int onesledpins[] = (0, 1, 2, 3)

fluid wagon Jan 31, 2020, 4:58 AM

#

Ues

#

Yes

twin ginkgo Jan 31, 2020, 4:58 AM

#

ok

fluid wagon Jan 31, 2020, 4:58 AM

#

personally though, I usually use separate variable names for pins

twin ginkgo Jan 31, 2020, 4:59 AM

#

well im trying the scrip madbodger gave me to try

#

how do i post a script in chat

#

``#include "RTClib.h"
#include <Adafruit_MCP23017.h>
#define NUM_ONES_LEDS 4

RTC_DS3231 rtc;
Adafruit_MCP23017 mcp;

DateTime now = rtc.now();
int onesledpins[4] = {0, 1, 2, 3}; // LED pin numbers
int ones = (now.minute() % 5);
int led;

char daysOfTheWeek[7][12] = {"Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"};

void setup () {
//mcp
mcp.begin();
mcp.pinMode(0, OUTPUT);
//rtc
#ifndef ESP8266
while (!Serial); // for Leonardo/Micro/Zero
#endif

Serial.begin(9600);

delay(500); // wait for console opening

if (! rtc.begin()) {
Serial.println("Couldn't find RTC");
while (1);
}

if (rtc.lostPower()) {
Serial.println("RTC lost power, lets set the time!");
//rtc.adjust(DateTime(F(DATE), F(TIME)));
}
}

void loop () {
//rtc
DateTime now = rtc.now();

Serial.print(now.year(), DEC);
Serial.print('/');
Serial.print(now.month(), DEC);
Serial.print('/');
Serial.print(now.day(), DEC);
Serial.print(" (");
Serial.print(daysOfTheWeek[now.dayOfTheWeek()]);
Serial.print(") ");
Serial.print(now.hour(), DEC);
Serial.print(':');
Serial.print(now.minute(), DEC);
Serial.print(':');
Serial.print(now.second(), DEC);
Serial.println();

Serial.print("Temperature: ");
Serial.print(rtc.getTemperature());
Serial.println(" C");

Serial.println();
delay(1000);

//lights

if (ones == 0) {
// zero, turn off all LEDs
for (led = 0; led < NUM_ONES_LEDS; ++led) {
digitalWrite(onesledpins[led], LOW);
}
} else {
// not zero, turn on appropriate LED
digitalWrite(onesledpins[ones - 1], HIGH);
}
}``

#

well thats what i have but does not work

lusty bear Jan 31, 2020, 5:14 AM

#

Hi all, Im trying to communicate through serial between feather nrf52840 express and feather m0 basic. This is the screenshot of the code in nrf52840 which I use to send int type variable named 'b'.

📎 Screenshot_from_2020-01-31_13-11-22.png

#

And this is the code in feather m0 basic of which I used to received the int data. it works great while the feather m0 basic or nrf52840 is connected to the computer. but fail if I power them up using battery or powerbank.

📎 Screenshot_from_2020-01-31_13-10-34.png

#

Can anyone point me what I am doing wrong for the serial communication?

cedar mountain Jan 31, 2020, 5:31 AM

#

I mean, if the code works on computer power but fails on battery, it's probably a wiring issue rather than a software problem. Maybe the grounds aren't the same?

lusty bear Jan 31, 2020, 6:06 AM

#

@cedar mountain feather m0 basic have 2 gnd pin and I already soldered one of the pin with the nrf52840 express

lusty bear Jan 31, 2020, 6:42 AM

#

and it still fail btw

lusty bear Jan 31, 2020, 7:34 AM

#

If anyone is interested in looking at the full coding here is the link:

#

https://gist.github.com/callmeraffiq/5efada1c2a8930ae20f9cf90a57cd7c0/revisions

GitHub

Build software better, together

GitHub is where people build software. More than 40 million people use GitHub to discover, fork, and contribute to over 100 million projects.

elder hare Jan 31, 2020, 11:58 AM

#

anyone have any good tutorials on how to send commands/http post TO the nodeMCU like "localip/?setled=on"?

pine bramble Jan 31, 2020, 2:35 PM

#

iirc, fill-in forms in HTML tend to use that stuff (old school methods).

#

So google for forms in html I'd think for simple examples.

#

Then I think you can cheat by looking at what your browser does with a form, in terms of forming a URI to send requests to the server.

#

Also DigitalOcean will let you setup an Apache web server; doing so is very instructive and immerses you in the concepts.

wooden bobcat Jan 31, 2020, 3:12 PM

#

@pine bramble appreciate the additional info. will take a closer look a bit later. 73

pine bramble Jan 31, 2020, 3:14 PM

#

@wooden bobcat heh. Yeah I got my novice in Feb 1974; sat in front of an FCC examiner on the West Service Road in Hartford, CT for the General.
Code exam for the Novice was at .. drumroll .. W1AW (which was 10 miles from our house, growing up).

#

I was CW only for about 18 months.

north stream Jan 31, 2020, 3:30 PM

#

@twin ginkgo You'll need a loop in setup() to set the pin modes for the LED pins: ```c
for (led = 0; led < NUM_ONES_LEDS; ++led) {
pinMode(onesledpins[led], OUTPUT);
}

wooden bobcat Jan 31, 2020, 3:34 PM

#

@pine bramble NS7V... cw mainly for dx. wow.. W1AW!

pine bramble Jan 31, 2020, 3:36 PM

#

W1AW used a 5-position baudot type punched tape reader to send CW.
It would kerchunk after each and every character sent. ;) @wooden bobcat

#

They had sloped consoles made of formica.

north stream Jan 31, 2020, 3:36 PM

#

Those things are satisfying to watch

pine bramble Jan 31, 2020, 3:36 PM

#

@north stream Yeah I need to own one; never have.

wooden bobcat Jan 31, 2020, 3:38 PM

#

i have a teletype 33 with tape reperforator.. fun to watch. i've seen photos of those punched tape cw machines...

pine bramble Jan 31, 2020, 3:39 PM

#

We had a black box (stippled finish, baked deep) for a CW practice machine in high school. Read a narrow paper tape, which had holes in it to admit or block an incandescent bulb (looked just a bit like a motion picture projector, and was a reel-to-reel machine).

#

I think the FCC examiner also used one of these.

#

Amazing how 5 WPM seemed challenging sitting in that exam room.

wooden bobcat Jan 31, 2020, 3:41 PM

#

5wpm was challenging when i got started. now it's almost too slow to copy!

pine bramble Jan 31, 2020, 3:42 PM

#

Yeah W1AW send characters faster and added more silence between them, at slow code speeds.

wooden bobcat Jan 31, 2020, 3:44 PM

#

cw's good for error messages. used it in a boot rom once... probably should use it now.

pine bramble Jan 31, 2020, 3:57 PM

#

I wrote bidirectional CW for microcontrollers when I started out, in lieu of a keypad. ;)

wooden bobcat Jan 31, 2020, 4:18 PM

#

it's a handy skill to have for many things. so you were entering commands with a key? why not? seems like a debugging no-brainer.

twin ginkgo Jan 31, 2020, 4:24 PM

#

@north stream so i added it to the script but for some reason even without that small script i open the serial nothing is showing up there

#

but without the script it has the serial information

#

but without the script it has the serial

pine bramble Jan 31, 2020, 4:27 PM

#

@wooden bobcat Didn't understand 'why not'.

#

I probably had an iambic keyer paddle handy -- lost track of it!

twin ginkgo Jan 31, 2020, 4:28 PM

#

yeah it does not like that led script

north stream Jan 31, 2020, 4:30 PM

#

Looks like you're trying to use a MCP23017: I thought you were hooking the LEDs directly to the Arduino, did you decide to hook them to the MCP23017 instead?

#

Also, you probably don't want to use GPIO 0 and 1 as LED pins, they're used for the serial communication.

twin ginkgo Jan 31, 2020, 4:32 PM

#

i had it there but that was my fault yeah i am going to have about 2-3 of them later after i get the 1-4 leds to work

#

just because of the fact that ill have about 27 leds to light up

#

or more later if i want to add some other stuff

north stream Jan 31, 2020, 4:39 PM

#

Understood. Perhaps just try not using GPIO 0 or 1 for LEDs, because that will interfere with serial communication

twin ginkgo Jan 31, 2020, 4:40 PM

#

ok ill move them

#

i still got nothing

north stream Jan 31, 2020, 4:43 PM

#

Add some debugging printouts to see how far you get. Failing that, use blink codes on the built-in LED.

wooden bobcat Jan 31, 2020, 4:45 PM

#

@pine bramble cw as alternative i/o method.. why not use it if one has the skill? we're in agreement. 🙂 i send rtty with a key on one of my rigs. also, looking over the link you posted re port manipulation. helpful! thanks again!

pine bramble Jan 31, 2020, 4:47 PM

#

@wooden bobcat Got it.
Yeah I am currently interested in register names on SAMD51; already using them for STM32F4x and want parity for the Forth stuff I do, between the two platforms.

pine bramble Jan 31, 2020, 5:13 PM

#

@wooden bobcat
https://github.com/arduino/ArduinoCore-samd/blob/master/bootloaders/mzero/Bootloader_D21/src/ASF/sam0/utils/cmsis/samd21/include/pio/samd21g18a.h
one more coming:

#

https://github.com/arduino/ArduinoCore-samd/blob/master/bootloaders/mzero/Bootloader_D21/src/ASF/sam0/utils/cmsis/samd21/include/samd21g18a.h#L361

#

I don't remember what we're talking about so I'm assuming SAMD21 .. SAMD51 would be similar but not directly supported.

#

The above should provide the vocab and search terms (addresses in hex beginning with 0x40 and the official names for things).

#

https://github.com/wa1tnr/CamelForth-SAMD51-SAMD21/blob/master/boards/itsybitsy_m4_usb/samd51a/include/samd51g19a.h#L695

#

and
https://github.com/wa1tnr/CamelForth-SAMD51-SAMD21/blob/master/boards/itsybitsy_m4_usb/samd51a/include/pio/samd51g19a.h

wooden bobcat Jan 31, 2020, 5:23 PM

#

@pine bramble SAMD51...

pine bramble Jan 31, 2020, 5:25 PM

#

(factory distribution files from Atmel are included in the repository)

#

https://github.com/wa1tnr/CamelForth-SAMD51-SAMD21/blob/master/0-Distrib.d/SAMD51G19A_trellis_04_Nov_2018_aa.atzip

wooden bobcat Jan 31, 2020, 5:28 PM

#

i need to look this all over. coming back to this after a number of years, so my C is rusty. grabbing the zip now.

pine bramble Jan 31, 2020, 5:35 PM

#

Before uploading make certain you're on Adafruit's current booloader on your target!

#

(can overwrite on the rare occasion the bootloader wasn't locked down)

pine bramble Jan 31, 2020, 5:57 PM

#

This roughly corresponds, for STM32F405 iirc:
https://github.com/wa1tnr/eforth-stm32f4x-a/blob/master/forth.d/working_Blinky-j.fs#L19

#

Let me see about wrapping some of this up into a single .TXT file ;)

EDIT: removed some excess remarks from the channel, and placed them in a neat .TXT file (see below).

twin ginkgo Jan 31, 2020, 6:24 PM

#

Ok thanks

pine bramble Jan 31, 2020, 6:36 PM

#

Same as:
https://termbin.com/ds1v
My remarks, left as a text file.

📎 help_w_ard_nis_remarks.txt

#

that should trim the 'nis show .. also starring nis .. guest star: nis!' business ;) haha

wooden bobcat Jan 31, 2020, 8:25 PM

#

@pine bramble thanks for the major help, and for the remarks file! 73!

pine bramble Jan 31, 2020, 8:26 PM

#

haha you're welcome. Nice to meet you! @wooden bobcat

north stream Feb 1, 2020, 2:50 PM

#

@twin ginkgo I haven't heard anything, hopefully you got your LED code sorted.

twin ginkgo Feb 1, 2020, 4:36 PM

#

No i havent the DateTime now = trc.now(); at the top of the script is causing it to break

north stream Feb 2, 2020, 12:42 AM

#

Hmm, that's interesting. Did it work without the LED code?

devout sun Feb 2, 2020, 5:19 AM

#

anyone know of a good tutorial for hc05? I am trying to pair 2 hc05 so that i can have a wireless bluetooth keyboard matrix macro. I have the code ready for the macro keyboard matrix but i am having difficulty understanding serial communication. I have paired 2 hc05, 1 as slave and 1 as master, but i am having difficulty finding good tutorials online. I was hoping someone could link me info (i do well with good video instructors but i can manage with written instruction). I am an extreme beginner who has a limited understanding. thanks for your time.

#

i was going to go from keyboard matrix- pro micro-hc05-hc05-promicro-computer

#

is there a better/simplier way of doing it?

south canyon Feb 2, 2020, 12:27 PM

#

can someone help with millis?

#

on arduino

twin ginkgo Feb 2, 2020, 1:07 PM

#

@north stream it worked with out that line

north stream Feb 2, 2020, 3:14 PM

#

@south canyon What are you trying to do with millis()? What is happening/not happening?

#

@twin ginkgo It worked without the rtc.now() line? Perhaps the RTC is misconfigured or miswired?

twin ginkgo Feb 2, 2020, 3:26 PM

#

I dont think so its the rtc.now above the int

north stream Feb 2, 2020, 4:03 PM

#

I don't follow.

twin ginkgo Feb 3, 2020, 4:24 PM

#

@north stream ``#include "RTClib.h"
#include <Adafruit_MCP23017.h>
#define NUM_ONES_LEDS 4

RTC_DS3231 rtc;
Adafruit_MCP23017 mcp;

DateTime now = rtc.now();
int onesledpins[4] = {0, 1, 2, 3}; // LED pin numbers
int ones = (now.minute() % 5);
int led;
`` that part

#

rtc.now stops it if i take that out it works

#

without that i can make the led blink

north stream Feb 3, 2020, 4:34 PM

#

Which RTC library are you using?

twin ginkgo Feb 3, 2020, 4:35 PM

#

ds3231

north stream Feb 3, 2020, 4:38 PM

#

The AdaFruit one, the Ayars one, the Rodan one, or the Northern Widget one?

twin ginkgo Feb 3, 2020, 4:40 PM

#

adafruit

north stream Feb 3, 2020, 4:53 PM

#

Hmm, the now() method just does an I2C write, followed by several reads. Maybe an I2C issue? https://github.com/adafruit/RTClib/blob/master/RTClib.cpp#L996

GitHub

adafruit/RTClib

A fork of Jeelab's fantastic RTC library. Contribute to adafruit/RTClib development by creating an account on GitHub.

pine bramble Feb 3, 2020, 7:00 PM

#

Some RTC chips have a small amount of RAM you can use as a general purpose buffer (the Philips i2c ones, PCF85xx series iirc).

wind pond Feb 4, 2020, 3:10 AM

#

Any good arduno progects that you could do in a day or so

rocky igloo Feb 4, 2020, 6:05 AM

#

@wind pond Using an Arduino as a programmer to write a bootloader onto a blank ATmega chip is quick. I did that the first day I had one, and got a big kick out of it. On a classic Arduino with a socket for the MCU device, you can swap the chips and the new one works too. Or use it to program a small chip like an ATtiny to be a blinkie.

reef gull Feb 4, 2020, 3:24 PM

#

I've got an change interrupt watching a PIR motion sensor. All the ISR does is set a volatile bool to true, and the bool is checked every iteration of the loop method. If true, a function to light up some LEDs is called. If it's not true, then the LEDs are switched back off.
However, the LEDs only seem to update 80% of the time. Any ideas? I'm guessing you'd need a code sample to know anything for sure.

#

Pin mode is set to input as opposed to input_pullup. Output from the pir is 3.3v

wind pond Feb 4, 2020, 3:34 PM

#

Thx

frank current Feb 4, 2020, 5:47 PM

#

Basic newb question: I have an arduino nano and i'm wondering where do i start looking/reading for advice/info (or what can you give) about controlling a water pump (3.7v-6v)?

#

imma have a moisture sensor and when it reaches a certain level it should turn the pump on. the code i won't have much issue with i'm just new to the wiring and connection bits.

#

i figured i'd open some pin to high to turn it on. I'm just not sure what and if i'll need something inbetween.. Thanks in advance

neon owl Feb 4, 2020, 5:49 PM

#

https://www.youtube.com/watch?v=IG5vw6P9iY4

YouTube

DroneBot Workshop

MOSFETs and Transistors with Arduino

Today we will learn how to use Transistors and MOSFETs to enable our Arduino to switch high-current DC loads, including a 12-volt RGB LED Strip Light.

Article at https://dbot.ws/bjtmosfet
More tutorials and projects at https://dronebotworkshop.com
Chat on the Forum at https:...

▶ Play video

#

@frank current

frank current Feb 4, 2020, 6:01 PM

#

Thanks

neon owl Feb 4, 2020, 6:02 PM

#

@frank current i will recommend looking at some other things by this guy as he does a very indepth look into these subjects there is also greatscoots electronic basics

frank current Feb 4, 2020, 6:03 PM

#

awesome, danke

neon owl Feb 4, 2020, 6:04 PM

#

this may also be applicable to your project mostly optocouplers @frank current https://www.youtube.com/watch?v=2BdevOmN-Zk

YouTube

GreatScott!

Electronic Basics #32: Relays & Optocouplers

Support me for more videos: https://www.patreon.com/GreatScott
Previous video: https://youtu.be/aKhPj7uFD0Y
Facebook: https://www.facebook.com/greatscottlab
Twitter: https://twitter.com/GreatScottLab

In this episode of Electronic Basics I will show you how a Relay and Optoc...

▶ Play video

north kelp Feb 4, 2020, 8:19 PM

#

@frank current Here is a Plant Monitor project in the Adafruit Learning System that uses a moisture sensor and pump. The wiring would be similar with your Nano:

https://learn.adafruit.com/pyportal-iot-plant-monitor-with-google-cloud-iot-core-and-circuitpython/pyportal-wiring

Adafruit Learning System

PyPortal IoT Plant Monitor with Google Cloud IoT Core and CircuitP...

Monitor your plant's vitals by combining CircuitPython with Google Cloud Core IoT

frank current Feb 4, 2020, 8:22 PM

#

oh hey! thanks!

pine bramble Feb 5, 2020, 1:54 AM

#

@reef gull https://gammon.com.au/interrupts
That's for the AVR (8-bit Atmel chips).

elder hare Feb 5, 2020, 4:00 PM

#

is it 10k resistor on +5 and data or GND and data on the neopixel to clean up the signal? (running the rainbow pattern and it is all messed up and flickering)

pine bramble Feb 5, 2020, 4:21 PM

#

Anyone got any experience with pairing two HC05 bluetooth modules as a master and slave?

#

Currently cleared paired devices on both the master and slave, both are the same version, both on a baud rate of 38400

#

but when i bind them from the master to the slave i just receive an ERROR: (7) message

fluid wagon Feb 5, 2020, 4:23 PM

#

Good morning

pine bramble Feb 5, 2020, 4:23 PM

#

my slave is in pairing mode while by master is in AT command mode

fluid wagon Feb 5, 2020, 4:25 PM

#

@pine bramble Might want to check in at #help-with-radio

#

It covers Bluetooth as well as other radio types

pine bramble Feb 5, 2020, 4:26 PM

#

Awesome, thanks man @fluid wagon

fluid wagon Feb 5, 2020, 4:26 PM

#

So, I installed the latest Adafruit board definition for SAMD (1.5.10), and I now get this error spammed

#

Well, different VM, but, basically it is complaining about missing headers in hardware/samd/1.5.10/libraries/CI_Tests

#

Invalid library found in C:\Users\jfleischer\AppData\Local\Arduino15\packages\adafruit\hardware\samd\1.5.10\libraries\CI_Tests: no headers files (.h) found in C:\Users\jfleischer\AppData\Local\Arduino15\packages\adafruit\hardware\samd\1.5.10\libraries\CI_Tests

#

is the full error

#

I have recreated the issue with the new board definitions on 2 different systems, and it only occurs in 1.5.10

twilit harbor Feb 5, 2020, 5:02 PM

#

I am trying to use the fat file system (SPI Flash) on the m4 express, is storing stuff there supposed to be non volatile?

cedar mountain Feb 5, 2020, 5:04 PM

#

Yes, flash is non-volatile.

twilit harbor Feb 5, 2020, 5:06 PM

#

@cedar mountain Here's a little snippet. When the file exists it reads it out then deletes it. When it doesnt exist it writes it. So every other time I run it is prints "Hello World". But if I have it write the file. Cut power to the m4, then run it again, the file doesn't exist.

📎 unknown.png

cedar mountain Feb 5, 2020, 5:14 PM

#

Hmmm. There can be problems with cutting power if the file system hasn't flushed the data to flash yet, but normally I'd expect that to happen at the close() call, so it shouldn't be the issue.

#

I wonder if you're somehow getting a situation where it's actually booting and deleting the file but the serial console wasn't connected so you didn't see the message about it.

pine bramble Feb 5, 2020, 7:15 PM

#

general question

#

can Serial.read change the data type of a variable

#

for example i have a variable of type int but it reads a char but the code still works fine?

#

📎 unknown.png

#

that if(state == 'F') statement works just fine

cedar mountain Feb 5, 2020, 7:19 PM

#

Generally C will do some automatic type conversions. A char is really a signed 8-bit integer, so it knows what to do there.

wary ridge Feb 5, 2020, 7:19 PM

#

That's C promoting integer types in the expression. It's fine

pine bramble Feb 5, 2020, 7:19 PM

#

awh sick, thanks guys

steady shore Feb 5, 2020, 8:24 PM

#

If I want to invert 1 and 0 on a button reading is there a better way than (val-1)*-1

woven mica Feb 5, 2020, 8:31 PM

#

If it is int or char ~val

steady shore Feb 5, 2020, 8:33 PM

#

Thank you!

twilit harbor Feb 5, 2020, 8:51 PM

#

@cedar mountain Ed youre a genius! what you said about the board probably running the removal without it coming on the serial was correct. So my little test didn't work but once I implemented it into my project it worked fine. Nice thinking 🙂

pine bramble Feb 5, 2020, 8:54 PM

#

@elder hare Did you read the Überguide?
https://learn.adafruit.com/adafruit-neopixel-uberguide/best-practices

pine bramble Feb 5, 2020, 9:17 PM

#

im having an odd issue, whenever i have an error in my code, the arduino IDE crashes and then I have to reinstall it. This has never happened before, but has happened at least 6 times today

#

any simple error like forgetting a semi colon

pine bramble Feb 5, 2020, 9:33 PM

#

actually its not when an error occurs anymore. It just crashes the entire ide whenever i try to compile code

pine bramble Feb 5, 2020, 10:01 PM

#

i installed the App from the installer rather than the one from the microsoft store

#

it works now

elder hare Feb 6, 2020, 12:37 PM

#

why does Arduino IDE say that DATA_PIN = 8 is not valid when i have #define FASTLED_ESP8266_RAW_PIN_ORDER at the top of my sketch? :S

warm token Feb 6, 2020, 11:44 PM

#

I haven't bought either of these yet, but hypothetically, if I had the Arduino Metro, with the requirement that I send commands at runtime over USB to it, which other smaller Adafruit board would be appropriate to run the same Arduino program? I see some of them only support programming over USB.

little oyster Feb 6, 2020, 11:56 PM

#

hey guys, im having trouble getting the avr-libc 2.0.0 library so i can use math.h

#

http://www.nongnu.org/avr-libc/user-manual/group__avr__math.html

#

ive already visited this site and tried downloading it but it says "Specified folder/zip file does not contain a valid library"

surreal pawn Feb 7, 2020, 12:05 AM

#

@little oyster I don't understand what you're trying to do. Are you trying to load avr-libc as an arduino library? you shouldn't need to do that

#

#include <math.h>

void setup() {
  // put your setup code here, to run once:
  float f = sinf(3.0);
}

void loop() {
  // put your main code here, to run repeatedly:
}```

#

@warm token like adafruit trinket m0? how small of a board are you trying to find

little oyster Feb 7, 2020, 12:08 AM

#

but aren't the imported libraries in orange font? when i import math.h on the first line the "math" isn't in orange font

warm token Feb 7, 2020, 12:08 AM

#

Just something that fits nicely on a breadboard or PCB rather than being externally attached. That looks like it might do nicely, thanks!