circuitpython-dev

[tulip sleet]

i have to step out for a few hours - sorry

[exotic pumice]

what do y'all use for PRNG on samd21?

[timber mango]

@tulip sleet this is already on an M4 ;-)
i also thought about reading about how to integrate native C++...
so all the buffer handling would be C/C++ - and only the api would be python..
i think for now i will make some compromises and then wait to see if the pixelbuf thing can help in any way - or later learn to make the C/C++ and python api thing...
thanks for your help and input!!

[exotic pumice]

the PRNG is all software right? One of my teammates was asking about using a floating ADC or some other hardware.

I know 51 has trng

[raven canopy]

@exotic pumice from a quick look, CP is all software. the gen functions are in /shared-modules/random/init.c.

[upbeat plover]

@solar basin i have some stuff for featherm4 and tft joywing would you like me to share it with you with some examples?

[exotic pumice]

@raven canopy yeah that's what I thought. I looked at arduino too and they use C stdlib rand

[upbeat plover]

hmm i was going to share it but i just found an error some reason its applying the y offset twice on scrolling text

[upbeat plover]

fixed...

[ruby atlas]

@timber mango have a look at https://github.com/rhooper/circuitpython/tree/pixelbuf - https://github.com/rhooper/circuitpython/blob/pixelbuf/shared-bindings/pixelbuf/PixelBuf.c for an example of code that moves a lot of the pixel manipulation code into C.

@tulip sleet __setitem__ isn't inherently slow -- though the code in neopixel/dotstar is. The work in progress in the pixelbuf compatible neopixel.py proxies to the CircuitPython level subscr with a very minor impact on speed https://github.com/rhooper/Adafruit_CircuitPython_RGBLED/blob/master/neopixel.py#L116

@timber mango i'm looking at your TLC59711 now

[tough flax]

@exotic pumice As I recall CP initializes using the TRNG on the M4 if its available - I think @slender iron mentioned it a while ago

@tulip sleet and @slender iron - I have a guide that is about ready - I need someone to convert my linux command-line section to a mac version... can either of you help?

Perhaps I should add @idle owl to that

[exotic pumice]

yeah, that's correct

[ruby atlas]

Hmm... The pixelbuf code is currently byte-oriented because of the protocols for neopixel/dotstar being byte oriented. The amount of bitwise math TLC59711 does makes it unsurprising it's slow. It would probably be reasonably easy to add code to pixelbuf to help manipulate 16 bit pixels. Is the float support really necessary? It just adds complexity and thus slowness. I don't quite understand the data structure from the quick look at the code, but it looks like pixels come in bocks of 12 (GS-Data?)

[meager fog]

@tidal kiln hihi just checkin' did you have any success w/ https://forums.adafruit.com/viewtopic.php?f=50&t=145316&p=720339#p720339

[tidal kiln]

@meager fog yep. just cut trace.
https://forums.adafruit.com/viewtopic.php?f=63&t=145259&start=15#p720687

[meager fog]

could you also reply to the thread above

and update the guide - it would be a blessin' for me 🙏

[tidal kiln]

sure. for guide update, basically same info i put in thread?

and this page looks like the obvious location:
https://learn.adafruit.com/adafruit-crickit-hat-for-raspberry-pi-linux-computers/speaker-output
?

[idle owl]

@tidal kiln Are you running linux?

[tidal kiln]

all the time

[idle owl]

hmm wait. Not sure you can check a thing for me. I was going to have you pip install one of the circuitpython libs to make sure a dependency installs, but now I'm not certain it'll let you do it on general linux or if it requires a Pi.

I mean it requires GPIO to do anything with it, but I wonder if you can install it anyway.

[exotic pumice]

@idle owl yo

[tidal kiln]

i also have a pi fired up

[idle owl]

Oh. Hah. Ok. Can you check a thing for me then? 😄

[tidal kiln]

sure

[ruby atlas]

i have a pi in a box, as well as various pis around if needed. including an uh, checking which old one...

[idle owl]

@tidal kiln Ok can you (probably in a fresh venv?) sudo pip3 install adafruit-circuitpython-ssd1306 or pip and see if it installs framebuf

[ruby atlas]

oh lol that's a pi 3 B v1.2 in that case, not an old one.

i have an ancient pi 1 here too.

i think i need more sd cards.

[graceful night]

Can anyone help with getting an OLED (SSD1306) display to work with my Trinket M0?

[timber mango]

@graceful night what is your question?

[graceful night]

So I have loaded the example code, and I think I have it wired correctly. but I get No I2C device at address 7a

I solderd the two jumpers on the back to make it I2C

The display does nothing when I plug in the trinket, I don't even know if it's working, or how to tell

[timber mango]

have you another board (like a classic arduino uno or there-like) to cross check that the display is working?

and have you checked you have pull-ups at some point?

please share the links to the tutorial / product page so i have some more input for my crystal ball 🔮 😉

[graceful night]

I think I have an arduino somewhere, but getting it to the point where it could talk to the display would be quite time consuming

pull-ups?

Display: https://learn.adafruit.com/assets/36493

[timber mango]

if the display breakout board has no pullups you need to install some...

[graceful night]

Trinket M0: https://learn.adafruit.com/adafruit-trinket-m0-circuitpython-arduino/pinouts

[timber mango]

thats fine - the breakout has some already installed (R13 & R14)

[graceful night]

I've been going off of this tutorial: https://learn.adafruit.com/circuitpython-oled-knob-sketcher/tiny-sketcher

I'm not actually building that, but I used the wiring diagram

[timber mango]

and also checked
https://learn.adafruit.com/monochrome-oled-breakouts/wiring-128x64-oleds#using-with-i2c-4-5

?

[graceful night]

and the code I'm using is the example from here: https://github.com/adafruit/Adafruit_CircuitPython_SSD1306

yeah, I think I have that open too in one of my 10000 tabs

[timber mango]

😉

have you tested simpletest?
https://github.com/adafruit/Adafruit_CircuitPython_SSD1306/blob/master/examples/simpletest.py

and
https://github.com/adafruit/Adafruit_CircuitPython_SSD1306/blob/master/examples/ssd1306_framebuftest.py

do you have a serial console open so you see the messages from CircuitPython?

[graceful night]

I think that's pretty close to what I'm running now

yeah

OK, I loaded that, same message

[timber mango]

normally if the initialisation of the i2c does not work it shows some error messages.

[graceful night]

from the diagram for the display, the i2c address should be 0x7a

what I see in the console is: ValueError: No I2C device at address: 7a

is there a way to scan the i2c bus?

[timber mango]

yes

https://circuitpython.readthedocs.io/en/latest/shared-bindings/busio/I2C.html#busio.I2C.scan

but in the second example (the ssd1306_framebuftest.py) there is something mentioned that you eventually need a reset pin connected and handle by software...
i don't know for sure..

[graceful night]

yeah, I have the reset pin plugged in to D4, but I haven't used it for anything

[timber mango]

# Create the I2C interface.
i2c = busio.I2C(board.SCL, board.SDA)
# A reset line may be required if there is no auto-reset circuitry
reset_pin = DigitalInOut(board.D5)

# Create the SSD1306 OLED class.
# The first two parameters are the pixel width and pixel height.  Change these
# to the right size for your display!
# The I2C address for these displays is 0x3d or 0x3c, change to match
# A reset line may be required if there is no auto-reset circuitry
display = adafruit_ssd1306.SSD1306_I2C(128, 32, i2c, addr=0x3c, reset=reset_pin)

[graceful night]

oh 😃

[timber mango]

from the schematics there is no reset circuity on your breakout..

did you try to scan?

untested code for scanning: (should work with copy paste to repl)

import board
import busio
i2c = busio.I2C(board.SCL, board.SDA)
i2c.scan()

[graceful night]

thanks

says "function requires lock

[timber mango]

uh ok .

one moment

[exotic pumice]

while not i2c.try_lock():
    pass

then do it

[graceful night]

didn't like "pass"

do I put that right before the scan command?

[exotic pumice]

I forgot the colon

yes

[graceful night]

ok

well, I"m not getting any errors now

but also not getting any output

[exotic pumice]

you have to untab and hit enter

to end the while loop

like this

while not i2c.try_lock():
    pass
i2c.scan()

[graceful night]

that's what I have

I"m guessing no output means no i2c device found

[exotic pumice]

maybe print(i2c.scan()) not sure

[timber mango]

give me a moment - i connect some i2c sensor to a ItsyBitsy M4 and try it..

[graceful night]

OK, I'm going to take a short break, I've been staring at this thing for hours

thanks for your help so far

I also have an i2c pressure sensor I'm can hookup, to see if that scans

[timber mango]

your welcome

[graceful night]

hmm, adding the print I got an output

it just says:

[61]

[timber mango]

wip

[exotic pumice]

ok, then 61 is your i2c address

[tidal kiln]

@meager fog here's the guide update:
https://learn.adafruit.com/adafruit-crickit-hat-for-raspberry-pi-linux-computers/speaker-output#enable-speaker-output-4-2

[timber mango]

working i2c scan example:

import board
import busio
i2c = busio.I2C(board.SCL, board.SDA)
while not i2c.try_lock(): pass

# we need a new line to end loop indentation here...
# print all found addresses as hex:
for item in i2c.scan(): print("0x{:X}".format(item))

# done :-)

this example can be copy pasted to the REPL

[graceful night]

OK, I"m back

[timber mango]

@graceful night try the i2c scan example i posted ^
that shoud find your address!

[graceful night]

OK, getting set back up, I switched over to my office so I can use the 4k monitor instead of the 13" laptop screen 😃

ok, that gave me 0x3d

which is 61

let me reload the display code now

We have a display!

[exotic pumice]

🎉

[graceful night]

that seems to be a few more pixels than I specified, but at least I have something now

thank you so much

Now I'm one step closer to making a freeze dryer 😃

[timber mango]

you are welcome!

a freeze dryer??

on your screen is snow? 😉

[graceful night]

yeah, I like making things complicated....

my plan is to use this to display temp and pressure for the freeze chamber and cold trap in a freeze dryer

[timber mango]

oh i know this concept - simple things can get you down a rabbit hole so fast...

sounds like a cool plan!

[graceful night]

plans often are, we'll see how the implementation goes

[graceful night]

What's the difference between main.py and code.py? so far I've been editing code.py

[idle owl]

There is no difference.

[graceful night]

hmm, is main from 2.0? I just noticed the line at the top of it

[idle owl]

CircuitPython looks for both. But it will run code.py if both are present.

[graceful night]

cool, thanks

[idle owl]

As in, code.py takes precedence over main.py.

On a Trinket, depending on when you got it, yes, main.py may have been meant to work with 2.0. Which means it may not work with the current version.

[graceful night]

I have the trinket M0. just updated it to 3.0

ok, another stupid question (I can guarantee I have lots of them)

[idle owl]

I'm sure it's not stupid. 😃

[graceful night]

when I say " import board" where is that coming from? I can't find board in the lib directory

[idle owl]

board is built into CircuitPython

There are a number of modules built into CircuitPython that you would import but not find in your lib directory.

[ruby atlas]

it's built in! https://circuitpython.readthedocs.io/en/3.x/shared-bindings/board/__init__.html#module-board

and https://circuitpython.readthedocs.io/en/3.x/shared-bindings/index.html

[idle owl]

@ruby atlas That link is for an older version of CircuitPython 😃 .. there you go 😄

[graceful night]

awesome

ok, so what is the difference between "import board" and "from board import SLC, SDA"

[ruby atlas]

one imports the board module, but the symbols are not imported into your current namespace

the other form puts SLC and SDA in your current namespace so you can say: SLC instead of board.SLC

[graceful night]

ok, so even if I do an import board, I'm still going to have to import the symbols I need?

ohh!

[ruby atlas]

no, import board imports the module too.

sometimes you don't want to pollute your namespace with symbols (or they conflict with your code)

[graceful night]

gotcha, lightbulb moment there

[idle owl]

We did some testing a while back, as well. import board uses less memory than from board import foo because it's not doing anything until you call it. So if you run into memory issues, that's one thing to look into.

It's seriously a difference of bytes, but sometimes you need those bytes.

[ruby atlas]

yeah, especially on M0 boards

[graceful night]

hopefully I'll be fine for this, I just need to pull data from 3 sensors and put them on a display

of course, feature creep being what it is, that may change...

OK, back to reading. thanks, you all are super helpful

Sweet. adding the reset pin to the display fixed the snow. Now I just have three pixels lit!!

[plucky briar]

Hello all, new to python, been playing with arduino for several years. Just ordered my first Circuitpython board (metro MO express) and looking to convert code from arduino uno to circuitpython. I've started to convert the code even though I just ordered the board, I'm using 4 one wire DS18B20 sensors and i have the ID's for all 4. I would like to assign each device ID to a value like therm1 = the device ID. how can I do this in circuitpython?

[umbral dagger]

@ruby atlas The M4 with it's meager 192K is looking claustrophopic now with the '840 and grand central with 256K 😃

Can't fit a grand central in a key fob, though.

@plucky briar Welcome! You're where I was about a year ago.

@plucky briar @turbid radish and I did a guide on Arduino <-> CircuitPython that might be a place to start.

[manic glacier]

ladyada

[adafruit/circuitpython] New comment on issue #1048: nrf: implement touchio\.TouchIn

using the technique linked above in the "capacitivesensor" library, it seems to work quite well, you need a drive pin but not ADC required

capacitive_test.txt

[umbral dagger]

@plucky briarhttps://learn.adafruit.com/arduino-to-circuitpython

[graceful night]

huh. it would seem that I've already hit the memory limits of the trinket M0. when I set the display to 128,64, I get a memory allocation error. but it works OK at 128,32

[umbral dagger]

You're using an OLED display?

[graceful night]

yeah

ssd1306 based

adafru.it/938

[umbral dagger]

Yeah, they take quite a bit of memory. Challenging on an M0 board.

[graceful night]

yeah, I'm learning that

will circuitpython run on all the feather boards?

[umbral dagger]

I would recommend an M4 board for learning CircuitPython.

Only SAMD21/51 boards (M0 and M4).

It's tricky on the M0 boards, though. There's not much space left for your code.

Oh, the '832 and '840 feathers as well.

[graceful night]

so the feather M4 express?

[umbral dagger]

That's a great CircuitPython board. It's been my goto since it came out. The ItsyBitsy M4 Express is a good choice as well. Same computational features, but slightly different physically.

Feather has the advantage of the featherwings

[graceful night]

yeah, I like the featherwings, and I like the simplicity of circuitpython so far. I'm not a programmer, but it's been easy to figure out so far

[umbral dagger]

That is a huge advantage of Python: it's fairly easy to learn. The syntax is minimal. That said, it's a powerful language.

[idle owl]

My first experience with any programming or electronics was with CircuitPython and the Circuit Playground Express.

[graceful night]

alright, I'm going to order two of the M4 expresses. I already have to M0 on the way, along with the packet radio featherwings. I'm sure they'll work for some of the sensors that don't need a local display

[umbral dagger]

That's completely the opposite of my experience. CircuitPython is my first time really using and enjoying Python after working with hardware and software for 30ish years.

[idle owl]

@graceful night They'll for sure work for a lot of projects. You happened to dive into one that requires a lot of memory. 😃

[graceful night]

I often jump in to the deep end 😃

[umbral dagger]

What @idle owl said. You can do a fair bit with an M0 board... the OLED displays is pushing it though.

[timber mango]

displays are memory hungry - in every board (its the same for arduino - you need a processor with lots of ram or need a big bunch of heavy and slow tricks..)

[idle owl]

@graceful night You're also working with an M0 board that isn't an Express board. Which is to say the Trinket doesn't have the SPI flash that the Express boards do. So even an M0 Express board will be able to do more than a Trinket. Trinket and Gemma are the tiny ones.

Great for tiny projects, they can run a TON of LEDs, but they don't handle memory-hungry code very well.

[graceful night]

yeah, I"m going to focus on the feathers going forward, but I"m sure I can put the trinket to use. Or give it to my kids

[umbral dagger]

And if you use C++ on them, you have all the capability you need.

Python has a lot of overhead.

[idle owl]

There are so many projects using Trinket that you can check out. It's definitely got its place.

[umbral dagger]

It's always a series of tradeoffs

[graceful night]

yeah, My goal here was to not do C++

[umbral dagger]

A noble goal.

It's really nice not to have to.

[graceful night]

I took a couple C++ classes in school, but that was a very long time ago

alright, two more boards ordered, now I'll have 5 😃

[umbral dagger]

That's a good start 😉

[graceful night]

Yeah, even though I spent all day getting the display to work, I think I"m going to turn it off and just use the console until I get the M4s. Everything I do I run in to memory allocation errors

[tawny creek]

Welcome to the Circuitpython fam @graceful night !

[solar basin]

@upbeat plover Sorry, I've been asleep all day. lol Also, I'm using the 2.4" Touchscreen FeatherWing

[upbeat plover]

i dont have one of them

@solar basin here is tft joywing stuff

[solar basin]

Oooo 4.0 alpha

[upbeat plover]

i dont think that will help much

[solar basin]

I'm going to assume 4.0-alpha has displayio, 3.1.1 has none lol

[upbeat plover]

i just tested 3.1.1 that should work with 3.1.1 also

[solar basin]

You put a lot of work into that!

[upbeat plover]

not sure why but looks like 35kb of RAM more is needed in 3.1.1

[solar basin]

Interesting

They really cleaned things up in 4.0?

[upbeat plover]

33024 difference yeah 4.0 would be ideal for this

i want to get a touch screen now 🤠

[terse kayak]

Attempting to learn how to get the full range of motion from a servo...

pwm = pulseio.PWMOut(board.A2, duty_cycle=2 ** 15, frequency=50)

[solar basin]

@upbeat plover So far I haven't been able to do much with it other than draw some shapes lol

[terse kayak]

Using https://www.adafruit.com/product/169 with a Circuit Playground and Circuit Python 3.x. When I use MakeCode the full range is achieved. But MakeCode has no settings, so whatever it is doing in the background is working.

[idle owl]

@terse kayak There is a guide on testing your servos to get the full range for your servo. The servo library has a way to set actuation range, and also min and max pulse widths. All of that tweaking should in theory get you the full range.

Every servo is a little bit different and can require some tweaking to get it right.

[meager fog]

@umbral dagger @slender iron obscure python q i cant find a google answer - is there a way to 'intercept' function calls like with _getattr_ but functions not attributes

i want to simplify/listify https://github.com/ladyada/Adafruit_CircuitPython_EPD/blob/master/adafruit_epd/epd.py#L119

[ruby atlas]

hmmm looking.

@meager fog what do you want to intercept in fill()?

[meager fog]

basically i want to like

if function in ('fill', 'line', 'text'): self.bw_buffer(function, kwargs)

because i have to take that single call to a drawing function and split it into two

one for the black/white buffer, one for the red/white buffer

what i have now works, just kinda repetative

[manic glacier]

TG-Techie

[adafruit/circuitpython] New comment on issue #1441: Sort releases into folders by language

oh awesome either way! thank you

[ruby atlas]

so you want (mostly) the same method code for fill, line, and text?

It's totally possible to do:

class Foo:
    def bar(self):
       pass

Foo.baz = Foo.bar

but that may not be quite what you want, because you don't know which method was called.

[meager fog]

cant, i have to call two functions

see github link

its 'unusual'

[ruby atlas]

yeah, i see that code. I'm trying to think if there's a way to avoid repetition and still be efficient in CircuitPython based on my recent work.

[meager fog]

its not so bad - just curious if there's options

[ruby atlas]

There are, but i'm not sure they're fast. the best thing might be to move the (color == Adafruit_EPD.BLACK) != self.black_invert and (color == Adafruit_EPD.RED) != self.red_invert to a function or method.

[umbral dagger]

Maybe something like method_missing in ruby

[ruby atlas]

@umbral dagger missing method in python is implemented by using __getattr__ and returning a callable, since a method is just a callable.

[umbral dagger]

I see that

[ruby atlas]

@meager fog you can also use a lambda or helper to call both red and bw with a method.

    getattr(self._bw_framebuf, method)(*args)
    getattr(self._red_framebuf, method)(*args)

a lambda probably wouldn't be as nice

and i don't recall if we have partial in CircuitPython?

better might be:

def _call_both(self, method, *args):
    getattr(self._bw_framebuf, method)(*args, (color == Adafruit_EPD.BLACK) != self.black_invert)
    getattr(self._red_framebuf, method)(*args, (color == Adafruit_EPD.RED) != self.red_invert)

[umbral dagger]

That looks reasonable. And you could gate it on the method name.

[meager fog]

yah maybe

kinda the same effort

🤷

[ruby atlas]

then you have:

def pixel(self, x, y, color=None):
    self._call_both('pixel', x, y)

[meager fog]

true...

ok maybe ill try it!

[ruby atlas]

might want to benchmark it 😃

or get someone else to 😃

[meager fog]

ok!

[ruby atlas]

There's always optimizations to be done, but whether to bother depends 😃

[solar basin]

Weird, CircuitPython 4.0.0-alpha.5 doesn't have displayio?

The release notes seemed to imply it does

ImportError: no module named 'displayio'

[terse kayak]

Thank you @idle owl
Is it this one? https://learn.adafruit.com/using-servos-with-circuitpython/circuitpython
I've tried 0.75, 1, 2, 2.25, and 2 ** 15 (from the example)
and min750/max2250 for the servo lib
all results the same
the only difference is I'm hooked and using A2 instead of D5 in the example (since D5 is a button on this board)

[idle owl]

This is the tester one I was thinking of: https://learn.adafruit.com/circuitpython-servo-tester and I don't know if that guide you linked is up to date

There's a new function that's something like set_pulse_width_something that has min and max pulse in it... and I don't see it in that guide @terse kayak

https://github.com/adafruit/Adafruit_CircuitPython_Motor/blob/a8894480283e3b81f39a3db5716b443963abc56f/adafruit_motor/servo.py#L47

[terse kayak]

@idle owl thanks I will try that in a bit .. was on a tagent looking for a debouncer library for servo tester script

[tulip sleet]

@tough flax There's now a 3.1.2 PR for you to test: https://github.com/adafruit/circuitpython/pull/1404. You can clone dhalbert/circuitpython and check out drivers.rst-typo (this is piggybacking on a previous PR that was stalled due to fixing some build issues). I've invited you as a collaborator so you can review.

[manic glacier]

dhalbert

[adafruit/circuitpython] New comment on pull request #1404: Prepare for 3\.1\.2 release: Link typo in drivers\.rst; update frozen modules; fix nRF builds

This minor PR is now fixed and re-purposed for a 3.1.2 release. I fixed the nRF 52832 build and removed the 52840 build, which depended on an alpha version of the SD that is no longer available, and would require significant code changes to upgrade to a non-alpha version.

The main point of the 3.1.2 release is to include serial_bytes_available, which @ATMakersBIll is depending on for a Learn Guide.

[pastel panther]

hey @solar whale I'm trying to setup an esp8266 huzzah breakout according to this guide and once I uploaded the AT firmware, using screen to connect via serial spews out unintelligible characters like there is a encoding disagreement of some sort. Have you seen this before?

https://learn.adafruit.com/adding-a-wifi-co-processor-to-circuitpython-esp8266-esp32/firmware-upload

[umbral dagger]

I always see that out of the corner of my eye and thinks it's guts.

[pastel panther]

heh

[ruby atlas]

oh it's supposed to be a wifi symbol?

[pastel panther]

no, it's the espressif symbol

maybe it's meant to look wifi-ish?

[main meteor]

Not to be confused with the spiral on Poliwhirl, which does represent guts.

[tawny creek]

@main meteor hahaha nice reference!

@pastel panther last time I had this issue I switched to miniterm and it worked

[pastel panther]

@tawny creek same problem so far; did you have to specify any settings like partity, stop bits, etc?

[tawny creek]

@pastel panther this is the line @solar whale suggested that worked for me
python /usr/bin/miniterm.py /dev/tty.SLABtoUART 115200

on python 2.x, not 3 as far as i remember

[pastel panther]

Hmm, no dice

[slender iron]

@solar basin what board are you using? it should have it

[solar basin]

@slender iron Feather M4 Express

[slender iron]

probably a bug then

@meager fog I bet you can use getattr and return a function instead of a value

maybe not because of self

[solar basin]

I was thinking that as well, but I've only been doing Python for a few days 😛

In my mind, the difference between obj.prop and obj.func() is that obj.func returns a function and the () calls it

[slender iron]

ya, me too

not sure how it does the additional arg for self though

[solar basin]

Yeah, same

I can't seem to get a hold of SEEK_SET in CircuitPython, any idea where that's hiding?

[slender iron]

what context?

[solar basin]

file.seek(offset, SEEK_SET | SEEK_CUR | SEEK_END)

Here's the closest thing I can find in Python docs: https://docs.python.org/3/library/io.html#io.TextIOBase.seek

[slender iron]

ah, I think its always seek_set

[solar basin]

fantastic

[slender iron]

I usually omit it

[solar basin]

Drawing a pixel at a time is SLOW lol

Here's my super naive Image (bmp) class:

class Image:
    def __init__(self, file):
        self.bmp = open(file, 'rb')
        self.type = self.bmp.read(2).decode()
        self.file_size = struct.unpack('I', self.bmp.read(4))[0]
        self.bmp.read(4) # skip 4 bytes (reserved)
        self.offset = struct.unpack('I', self.bmp.read(4))[0]
        self.dib_size = struct.unpack('I', self.bmp.read(4))[0]
        self.width = struct.unpack('I', self.bmp.read(4))[0]
        self.height = struct.unpack('I', self.bmp.read(4))[0]
        self.color_planes = struct.unpack('H', self.bmp.read(2))[0]
        self.bits_per_pixel = struct.unpack('H', self.bmp.read(2))[0]
        self.compression_method = struct.unpack('I', self.bmp.read(4))[0]
        self.image_size = struct.unpack('I', self.bmp.read(4))[0]
        self.hres = struct.unpack('I', self.bmp.read(4))[0]
        self.vres = struct.unpack('I', self.bmp.read(4))[0]
        self.color_count = struct.unpack('I', self.bmp.read(4))[0]
        self.important_color = struct.unpack('I', self.bmp.read(4))[0]

    def draw(self, pixel):
        self.bmp.seek(self.offset)

        for i in range(self.image_size):
            x = i % self.width
            y = i // self.width
            b = struct.unpack('B', self.bmp.read(1))[0]
            g = struct.unpack('B', self.bmp.read(1))[0]
            r = struct.unpack('B', self.bmp.read(1))[0]
            pixel(y, x, color565(r, g, b))

I'm not sure why I'm using struct to read each color

[solar whale]

@pastel panther yes, I have seen that. Is the blue led blinking rapidly? Did the AT load have 3 parts to I or just 1?

[pastel panther]

@solar whale The blue led by the antenna is blinking fast, and yes the AT load had three parts

[solar whale]

Hmm. I thought it had fixed that. Are you loading via USB or via miniesptool through m4?

[pastel panther]

via usb

[solar whale]

Ok. Flash any version of CP to the eSP8266 first, then try reloading the AT firmware.

[pastel panther]

ok

[solar whale]

@pastel panther BTW I saw a Fennec Fox today!

[pastel panther]

awesome! They're adorable

[solar whale]

Yes. Was at the Norfolk, Va. zoo.

What was on the Huzzah to start with?

Do you erase it at start?

[pastel panther]

I just finished wiping then loading CP, than loading the AT firmware and I seem to be where I started, with the serial console looking like so:

��G
    @�x���Ɔ<��
              ���L�~�=�����G
                            L��e�����<��N��h���~=��H���
                                                       HHZ��eT��Ɔ<��N�����~X������HL�'��[��<�������L�~=�������HL�U����8Y������
    �~�=�������GHH�%�����<������H��

[solar whale]

If the blue light is flashing, don’t bother to look at console! Did you press reset in the esp. after done?

[pastel panther]

it had LUA on it when I got it, at least that's what it looked like. I thought I had erased it first, before flashing the AT firmware the first time but I was following the directions from the guide fairly obediently and I don't see directions to erase it first when I look now.

I reset it, yes

let me double check the command line I was using to load the AT firmware

[solar whale]

Should not matter. just esptool -c esp8266 -p /dev/ttyUSB0 erase_flash

Please post the line.

[pastel panther]

python3 /usr/local/lib/python3.7/site-packages/esptool.py --port /dev/tty.usbserial-A9M9DV3R erase_flash

 ~/micro$ python3 /usr/local/lib/python3.7/site-packages/esptool.py --port /dev/tty.usbserial-A9M9DV3R erase_flash
esptool.py v2.5.1
Serial port /dev/tty.usbserial-A9M9DV3R
Connecting....
Detecting chip type... ESP8266
Chip is ESP8266EX
Features: WiFi
MAC: 84:f3:eb:70:1a:0a
Uploading stub...
Running stub...
Stub running...
Erasing flash (this may take a while)...
Chip erase completed successfully in 7.4s
Hard resetting via RTS pin...

[solar whale]

I meant the line you flashed AT firmware with.

Try agin with clean erase.

[pastel panther]

esptool  --chip esp8266 -p /dev/tty.usbserial-A9M9DV3R write_flash 0 esp8266/AT_firmware_1.6.2.0.bin 0x2fc000 esp8266/esp_init_data_default_v05.bin 0x3fc000 esp8266/blank.bin

pulled pretty directly from the guide

[solar whale]

There are some trypsin in that ! Just a sec.

esptool.py --chip esp8266 -p /dev/ttyUSB0 write_flash 0 esp8266/AT_firmware_1.6.2.0.bin 0x3fc000 esp8266/esp_init_data_default_v05.bin 0x3fe000 esp8266/blank.bin

[pastel panther]

ooh, that offset is different

[solar whale]

Fix the addresses!

[pastel panther]

waaaaaaaaa

[solar whale]

That was from the guide 😉

Fix both! 0x3fc000 and 0x3fe000

The good thing is it makes sense that you get the flashing blue light with that !

[pastel panther]

To clarify, the guide is correct?

[solar whale]

Yes.

esptool  --chip esp8266 -p /dev/tty.usbserial-A9M9DV3R write_flash 0 esp8266/AT_firmware_1.6.2.0.bin 0x3fc000 esp8266/esp_init_data_default_v05.bin 0x3fe000 esp8266/blank.bin

Should work

[pastel panther]

I think it worked!

[solar whale]

Yay!

You confirmed that the fix we put in really works! Thanks!

[solar basin]

Does the SAMD51 have the same DMA size?

[pastel panther]

I can say for sure that the blue led isn't blinking anymore, and I did a one point see something legible on the console, but now it's back to garbage

[solar whale]

What are you using to talk to it. Use miniterm.py at 115200

[pastel panther]

screen, but I can give miniterm a try

[solar whale]

Screen won’t work

[solar basin]

Let me try a full sentence: Does the SAMD51 have the same DMA size as the SAMD21?

[plucky briar]

@umbral dagger Thank you for your help, I'll check it out. circuitpython looks fun, looking forward to it!!!

[pastel panther]

@solar whale that seems better; says ready or ERROR if I send a newline

[solar whale]

Ok. That’s fine. Type AT+GMR then enter

[pastel panther]

AT+GMR
AT version:1.6.2.0(Apr 13 2018 11:10:59)
SDK version:2.2.1(6ab97e9)
compile time:Jun  7 2018 19:34:26
Bin version(Wroom 02):1.6.2
OK

whoo

[solar whale]

The ready should only be after a reset. Looks good! Ship it!

[pastel panther]

nice! Thanks a bojillion for the help

I'll hook it up to the feather tomorrow

[solar whale]

NP. Glad it is working! Good luck!

[pastel panther]

I'm hoping to get my friend's mushroom farm reporting temp and humidity to adafruit.io

[tawny creek]

@pastel panther isnt tomorrow, right now 😄

and yay nice work guys 😄

[solar whale]

I have a temp/hum feed working via mine. Should work fine.

[umbral dagger]

@terse kayak Brand new debouncer library is now in the main library bundle. Directly here: https://github.com/adafruit/Adafruit_CircuitPython_Debouncer/tree/c7a4a8e7e68aeb27d950d39950e3ad9f20a14c52

Prior to that it was just a file, used i multiple projects. The guides got updated yesterday so it seems you looked between the two updates.

p@ruby atlas @pastel panther It does look like a wifi symbol, which makes sense. It also looks like intentines when you put in it the snake logo.

[solar basin]

I managed to take an image from the SD card on the Touchscreen FeatherWing and render it on the screen

https://gist.github.com/tjpeden/a059f8c80d81bc6916e2ac70c2ad7474

Basically looked at how the adafruit_rgb_display library filled the screen with a color and filled it with the bitmap pixels instead. It's super slow, though

[timber mango]

@solar basin slow is 'normal' for such things i think^^

[solar basin]

Also, are there any examples of interacting with the touch on these things in CP?

@timber mango yeah, it is

[timber mango]

yesterday i experimented some more with an library for the TLC5971 LED-Driver
and got 250ms to set all the colors of 128 pixels (=leds)

[solar basin]

250ms would be sweet! lol

[timber mango]

with some 'heavy' optimizing (getting rid of all the error / bound checking and inlining all code that before was in sub-functions) i got to about 50ms

how much pixels do you have?

[solar basin]

Reading 320 * 240 * 3 bytes from SD and writing 320 * 240 * 2 bytes to the screen takes on the order of seconds (closer to 5 maybe?)

[timber mango]

hm

do you have a clue how long the reading alone takes?

[solar basin]

There's also an endian switch in there as well

Well, I'm trying to be memory efficient so I read 3 bytes at a time, which are in BGR convert them to RGB and pack them Big Endian. I do that for a chunk of 256 pixels and write them to the display

That gist has the code I'm describing

[timber mango]

i have it open 😉

[solar basin]

I've only been using Python for a few days, so I'm sure the code is terrible

[timber mango]

hm not sooo...

😉

you could try to switch your buffer to bytearray (https://docs.python.org/3/library/stdtypes.html#bytearray)

i don't know if it makes any difference...

[solar basin]

Certainly makes more sense, given that bytes object are supposed to be immutable

[timber mango]

hm.

does make things difficult..

but i think one first point i would try is change the 'addition' to an indexed call:

def read(size):
    data = bytearray(size)

    for _ in range(size):
        b, g, r = struct.unpack('BBB', bmp.read(3))
        data[_] = display._encode_pixel(color565(r, g, b))

    return data

the problem is - i don't know what display._encode_pixel is returning..

• with the string version you added 3 bytes i think at once..

[solar basin]

It's just doing a struct.pack

takes the 2-byte output of color565 and packs it BE

I believe the format is '>H'

[timber mango]

hm..

so you need something more like this:

def read(size):
    data = bytearray(size *  BITS_PER_PIXEL??)

    for index in range(size):
        b, g, r = struct.unpack('BBB', bmp.read(3))
        data[index], data[index+1] = display._encode_pixel(color565(r, g, b))

    return data

[solar basin]

hmm

[timber mango]

i think i would try and make this two steped:
one function that converts the files to a raw-format - saves them to card.

so you can load them without the heavy converting..

all the function calls add up massively!!
i inlined as much as possible to gain speed: (thats not as readable - but hey you can't have both at the same time on this 'restricted' devices)
https://github.com/s-light/Adafruit_CircuitPython_TLC59711/blob/multi/adafruit_tlc59711/adafruit_tlc59711_multi.py#L838

the convertion does take a while - but has only to be done once for every (new) file

and storage on cards is plenty available..

[solar basin]

Good point

[timber mango]

and - if the convertion code is cleanly written you could extract it easily and also run it on a computer to prepare the card....

(but its cooler when the controller can do it himself..)

[solar basin]

I like the idea, I'll do it that way

[solar whale]

@solar basin if you are using this featherwing https://www.adafruit.com/product/3315 there is a CP driver for the stmpe610

[solar basin]

@solar whale perfect, thanks!

[solar whale]

https://github.com/adafruit/Adafruit_CircuitPython_STMPE610

[solar basin]

My Feather M4 Express keeps crashing and going into safe mode when I copy files to it

Should I not have multiple .py files?

@timber mango I updated that gist with my new code, I'm getting an IO error on line 34. Thoughts?

Anyone else want to look at it? https://gist.github.com/tjpeden/a059f8c80d81bc6916e2ac70c2ad7474

[light plaza]

could someone tell me, where/how to find the API - documentation for the MotorFeatherWing for steppers?

[terse kayak]

Working with servos .. the commented code doesn't achieve full range but the new code does.

# create a PWMOut object on Pin A2.
#pwm = pulseio.PWMOut(board.A2, duty_cycle=2 ** 15, frequency=50)
pwm = pulseio.PWMOut(board.A2, frequency=50)

# Create a servo object, my_servo.
#my_servo = servo.Servo(pwm)
my_servo = servo.Servo(pwm, min_pulse=500, max_pulse=2500)

The question would be should these changes be placed in older examples or just point them to the page on servo testing?

But if the big 'splodey goes fast, won't it get all bad? - GiR

[timber mango]

@terse kayak
line 2 only initialy sets the pwm to 50% duty cycle - normally this should be ~center at the servos...
and for the last line: yes it would be best to point them to the servo testing thing!
every servo is a little bit different in timing requirements...

@solar basin
it should be fine to have multiple files on your board -
but please check that there is space left... the 2MB can be easily filled with a hugh lib directory 😉

how do you call this test?

where do you try to write too?

could be that the internal flash is not writeable by your script..

[solar basin]

macOS says I'm using 1.7MB on disk

of the 2.1

[timber mango]

i haven't experimented with file access..

ok that seems fine..

was there a example learning resource / api document you followed for writing files?

[tidal kiln]

@solar basin look for macOS related hidden files

[solar basin]

@timber mango I updated my gist with my code.py

@tidal kiln Good point

I keep getting the solid green light on the M4 Express

[tidal kiln]

means the code is running:
https://learn.adafruit.com/welcome-to-circuitpython/troubleshooting#circuitpython-rgb-status-light-19-18

[marble hornet]

xargs: /Users/jonahym/Desktop/circuitpython/mpy-cross/mpy-cross: No such file or directory
is this familiar to anyone?

[solar basin]

Do you think I am writing too fast?

[tidal kiln]

@marble hornet do you have mpy-cross?

[marble hornet]

@tidal kiln what do you mean? I updated the submodules

Is there another step?

[tidal kiln]

does that files exist in that location - can you run it interactively? (without using xargs)

@solar basin you're just copying files to the CIRCUITPY folder?

[marble hornet]

i don;t see it

[tidal kiln]

you need to build it, try running make in that directory

[solar basin]

@tidal kiln I mean that I am reading a 320x240 bmp file from the SD card and writing the pixels converted into the format that the 2.4" TFT FeatherWing expects back to the SD card

[marble hornet]

running...

[tidal kiln]

is that the code in the gist above?

[solar basin]

Yes

I've stripped code.py down if you'd like me to update it in the gist

Actually, I had to update it because I overwrote code.py with image.py

[marble hornet]

mpy-tool.py: error: the following arguments are required: files

[ruby atlas]

does /Users/jonahym/Desktop/circuitpython/mpy-cross/mpy-cross exist?

if yes, check the first line of it. is it looking for a python version you don't have.

[tidal kiln]

or it's running, but you need to specify a file as a cli arg

$ ./mpy-cross
no input file

[marble hornet]

for building the nrf firmware ?

[tidal kiln]

mpy-cross just converts .py files into .mpy files

[marble hornet]

okay. i'm getting this error from running make BOARD=feather_nrf52840_express V=2

so somewhere in the script it isn't supplying file to compile?

[tidal kiln]

what directory are you in when you run that make command?

@solar basin try running things from REPL and see what happens

from image import Image
foo = Image('/sd/gold.bmp')

[marble hornet]

./ports/nrf

[tidal kiln]

dunno. try building one of the other ports as a sanity check

in ports/atmel-samd

https://learn.adafruit.com/building-circuitpython/build-circuitpython#build-circuitpython-6-5

[marble hornet]

compiling

[solar basin]

@tidal kiln how do I get into the REPL again?

[ruby atlas]

ctrl-c

[tidal kiln]

after connecting to the board
https://learn.adafruit.com/welcome-to-circuitpython/advanced-serial-console-on-mac-and-linux

[solar basin]

  File "image.py", line 11, in __init__
OSError: [Errno 2] No such file/directory

[marble hornet]

the atsamd51j19 worked

[solar basin]

That's weird because it's saying that the source file doesn't exist and that's been working until now

Unless the REPL doesn't have the SD card mounted anymore

[tidal kiln]

hmmm. maybe you need to do the mount stuff.

have you tried just a basic test, something like here:
https://github.com/adafruit/Adafruit_CircuitPython_SD/blob/master/examples/sd_read_simpletest.py

just to make sure SD card access works as expected

[solar basin]

I've been reading from the card all night.

I actually got that BMP on the screen, but it was SUPER slow (seconds to render)

So this is me trying something different to speed it up

[tidal kiln]

from board import SCK, MOSI, MISO, D5
from busio import SPI
from storage import VfsFat
from image import Image

spi = SPI(clock=SCK, MOSI=MOSI, MISO=MISO)
sdcard = SDCard(spi, DigitalInOut(D5))
vfs = VfsFat(sdcard)
storage.mount(vfs, '/sd')

foo = Image('/sd/gold.bmp')

[solar basin]

Before I was reading every pixel, converting it from BGR to RGB 565 BE and then storing that in a buffer to write when it's full

[solar whale]

@marble hornet when you first clone CP you should build mpy-cross

make -C mpy-cross

[marble hornet]

it worked after i built an atsamd then built teh nrf!

[solar whale]

At top level of repo

[marble hornet]

and good to know @solar whale

thank you

[tidal kiln]

-C just does the dir change, so just running make while in that dir did the same (i think you did that?)

[solar whale]

Oh -sorry-missed that

[tidal kiln]

but then first attempt to build an nrf target failed?

[ruby atlas]

hmm that's easy to test with a fresh clone

[marble hornet]

i did build it

[tidal kiln]

mpy-cross?

...sry...gotta AFK for a bit...back l8r

[solar whale]

@marble hornet two things to try. make BOARD=
x clean

And try without V=2

[marble hornet]

You must provide a BOARD parameter with 'BOARD='
Possible values are:
feather_nrf52832 feather_nrf52840_express makerdiary_nrf52840_mdk particle_argon particle_boron particle_xenon pca10040 pca10056 pca10059 sparkfun_nrf52840_mini
Makefile:6: *** BOARD not defined.  Stop.

[solar whale]

My typo

=desiredboard

Always do make clean before make

With desired board setting

make BOARD=feather_nrf52840_express clean

Then normal make

[marble hornet]

kk

cleaned

[slender iron]

@solar basin please file an issue if you get to safe mode. it shouldn't normally crash that hard

[marble hornet]

is there a difference between rm -r and cleaning ?

[solar basin]

@slender iron I don't think it did

[slender iron]

ah ok

[solar basin]

@slender iron whatever it is doing, however, is not helpful lol

It doesn't seem to want to exit this constructor

[slender iron]

if you ctrl-c you'll get a backtrace of where it is

[marble hornet]

it did build again

[solar whale]

@marble hornet sorry-I also have to go. Probably for the day. Good luck!

So it’s working?

[marble hornet]

have a great one! thank you for helping me get up and running . yes

[marble hornet]

@tidal kiln that includes you, thanks you

[manic glacier]

ATMakersBill

[adafruit/circuitpython] New collaborator added: ATMakersBill

[tough flax]

@tulip sleet - cloning/building/testing now

Hey @slender iron do you have a mac and a few minutes to help me adjust a linux guide page for mac?

@tulip sleet - build went fine (kinda close on memory! 😃 )

4180 bytes free in ram for stack out of 32768 bytes ( 32.0 kb ).

I can't check the functionality until about 3pm EST - no Trinket in hand

[tulip sleet]

Anything >= 0 is good enough 😃

np

[tough flax]

You don't have a mac do you?

[tulip sleet]

I do, though I don't use it very much. Point me to the page and I'll take a look.

[idle owl]

@light plaza We moved to MotorKit from MotorFeatherWing. I need to remove MotorFeatherWing from the FeatherWing library. Check out https://circuitpython.readthedocs.io/projects/motorkit/en/latest/api.html for the API for MotorKit. Here is the guide for it: https://learn.adafruit.com/adafruit-stepper-dc-motor-featherwing/circuitpython

[marble hornet]

not important however:

is there any reason why the usb pid for the hallow wing is so different form the other pids in express boards ?

        (0x239A, 0x8023),  # Adafruit Feather M0 Express CircuitPython
        (0x239A, 0x801B),  # Adafruit Feather M0 Express CircuitPython
        (0x239A, 0x8014),  # Adafruit Metro M0 CircuitPython
        (0x239A, 0x8019),  # Adafruit CircuitPlayground Express CircuitPython
        (0x239A, 0x801D),  # Adafruit Gemma M0
        (0x239A, 0x801F),  # Adafruit Trinket M0
        (0x239A, 0x8012),  # Adafruit ItsyBitsy M0
        (0x239A, 0x8021),  # Adafruit Metro M4
        (0x239A, 0x8025),  # Adafruit Feather RadioFruit
        (0x239A, 0x8026),  # Adafruit Feather M4
        (0x239A, 0x8028),  # Adafruit pIRKey M0
        (0x239A, 0x802A),  # Adafruit Feather 52840
        (0x239A, 0x802C),  # Adafruit Itsy M4
        (0x239A, 0x802E),  # Adafruit CRICKit M0
        (0x239A, 0xD1ED),  # Adafruit HalloWing M0
        (0x239A, 0x8030),  # Adafruit NeoTrellis M4
        (0x239A, 0x8032),  # Grand Central```

[idle owl]

Read it...

The Hallowing is a skull.

[marble hornet]

ahhaaha

[light plaza]

@idle owl thank you, I will have a look

[marble hornet]

if i'm making a metro compatible board need to still get my own pid / vid from somewhere right?

[exotic pumice]

http://pid.codes

[idle owl]

@exotic pumice Ping.

[exotic pumice]

Pong

[idle owl]

Got a minute? If you're up for it, I'd like a screenshot on Linux of renaming the CIRCUITPY drive. I was able to find the one you previously posted but you ran the command without sudo and also tried to name it more than 11 letters, and so there is extra stuff in the screenshot. Also would want your permission to post it to a learn guide.

If any of that is not ok, that's totally fine 😃

[exotic pumice]

I'm on a bus and my boards are in my luggage unfortunately.

[idle owl]

Ahhh ok

That's fair!

[exotic pumice]

Travelling back to college after the holidays

[idle owl]

Ah! Safe travels then!

[exotic pumice]

Thanks

[tidal kiln]

@marble hornet yes w.r.t. pid/vid

some general info here, see red alert box also:
https://learn.adafruit.com/introducing-trinket?view=all#about-the-bootloader-4-1

[idle owl]

@tidal kiln Do you have time to run a few linux commands and then get me a Learn guide-able screenshot? Which is to say, make the font a reasonable size if it's normally small. Totally ok if not.

[tidal kiln]

@idle owl sure. give me deets. wrapping up something AFK, but should be done in a few minutes and can then.

[idle owl]

Plug in a board. Run df to figure out CIRCUITPY's mount point. Then run sudo fatlabel /dev/foo SOMENAME to rename it (where SOMENAME is something 11 characters or less).

@tidal kiln Sounds great, thanks!

[exotic pumice]

@idle owl One thing to note. Not all linux distros mount devices automatically and such

[idle owl]

Yeah... that's a rabbit hole I'm not prepared to head down.

[exotic pumice]

Ok

[idle owl]

Thanks, though. It's good info. But apparently it's different for every distro and all kinds of whatnot with that and this isn't a comprehensive Linux guide, it's simple....

[exotic pumice]

Yeah

[idle owl]

@tidal kiln The other thing is apparently to see the new name in df you have to remount the drive. I don't think I care about having that though because I assume the remount command is different for different distros.

[exotic pumice]

Just a unplug and plug will do I think.

Maybe need to click on it in the file manager to mount it or run the mount command but I never had to I don't think

[idle owl]

@exotic pumice That's a much better idea

Good call thanks

[exotic pumice]

Yw

I think there's a sync command to flush filesystem changes but I wouldn't bother lol

[slender iron]

@idle owl you should be able to change the label from circuitpython itself

[idle owl]

@slender iron How? That totally slipped past Dan and I.

[slender iron]

may be broken though: https://github.com/adafruit/circuitpython/issues/1252

it did work in the end though

[idle owl]

Hmm.

Doing it through the host OS for the most part seems simpler.

At least for Mac and Windows. Linux requires steps.

I'll include it though in the guide page.

It worked on my Feather.

@slender iron Thanks!

[slender iron]

great!

[manic glacier]

kattni

[adafruit/circuitpython] New comment on issue #1252: Unable to change filesystem label

Tested on Feather M4 running 4.0.0alpha.3 and 4.0.0alpha.5. Including a boot.py with the above contents successfully renames the CIRCUITPY drive and mounts without issue following the rename.

[tidal kiln]

@idle owl FWIW

[idle owl]

@tidal kiln Thanks!

[tidal kiln]

blank line is where board was unplugged and then plugged back in

to allow automount to work

[idle owl]

right on, thank you

[tough flax]

@tulip sleet - this build (3.1.2 candidate) seems to be less stable - trying to get a stack trace, but it's resetting regularly.

Very odd - it seems to be fine when sending commands from the Mu serial interface, but when using the PowerShell script, it gets 2-3 goes and then resets

Perhaps opening and closing the serial connection?

So strange - now it's perfectly stable. unplugging/replugging

HRMPH

Oh well, it must be on my end

[tulip sleet]

@tough flax I compared 3.1.1 with this PR and I don't see changes that would be causing this kind of problem.

[tough flax]

Yes, I think this is oddness where Windows writes to files sometimes & resets the board

I see none of it under LInux

And I found the problem with #s and %s

printf "%b\r" $text instead of "%q\r"

[tulip sleet]

I didn't know about %q, that's good to know

[tough flax]

yes, %q quotes in a way that can be an input to a shell script - which trashes # somehow

[marble hornet]

@tough flax what does HRMPH mean?

[pastel panther]

@marble hornet that the person is grumpy about something? 😏

[marble hornet]

pronounce "ha rumf" ?

[pastel panther]

sure

[tough flax]

I't means I don't like things that aren't predictible

harumph

It means Discord won't let me curse

[marble hornet]

heisenbugs

?

[solar basin]

Does CP have os.path? Specifically os.path.exists?

@marble hornet I hate those lol

[marble hornet]

https://circuitpython.readthedocs.io/en/3.x/shared-bindings/os/__init__.html?highlight=os.path

ii don't think so, i'll plug a board in and check though

[solar basin]

The REPL complained at me

[marble hornet]

i don;t see it in dir(os)

so i don;t think so

there is sys.path

[solar basin]

huh didn't know that package existed

[marble hornet]

https://circuitpython.readthedocs.io/en/3.x/docs/library/sys.html?highlight=path

[tough flax]

Thanks @tulip sleet for the release and all the help on the guide!

[tulip sleet]

yw! 3.1.2 release coming soon

this release just adds serial_bytes_available and updates the frozen libraries

[manic glacier]

kattni

[adafruit/circuitpython] Pull request closed: #1404 Prepare for 3\.1\.2 release: Link typo in drivers\.rst; update frozen modules; fix nRF builds

kattni

[circuitpython:3\.x] 4 new commits

54693df Link typo in drivers.rst - dhalbert
293755d update libraries - dhalbert
a5420a6 use new download location for nRF sd132; remove... - tannewt
7d17414 Merge pull request #1404 from dhalbert/drivers.... - kattni

[solar basin]

@timber mango your idea was quite successful... however, the conversion process still takes a few seconds, but if the converted file exists I can just use it without re-converting it

[manic glacier]

dhalbert

[adafruit/circuitpython] New tag created: 3\.1\.2

[solar basin]

updated code: https://gist.github.com/tjpeden/a059f8c80d81bc6916e2ac70c2ad7474

[manic glacier]

dhalbert

[adafruit/circuitpython] New release published: 3\.1\.2

[river quest]

https://youtu.be/cZl-pTRokgw

[tulip sleet]

https://blog.adafruit.com/2019/01/06/circuitpython-3-1-2-released-adafruit-circuitpython/

This is a minor release. For most people you don't need to update immediately. runtime.serial_bytes_available was added (it's already in 4.0), and there are some minor additions and fixes to the frozen libraries.

[solar basin]

Are any of those eink displays going to be in a FeatherWing form factor? Probably a dumb question, but that might be a fun alternative for my project

[manic glacier]

tannewt

[adafruit/circuitpython] New comment on issue #1252: Unable to change filesystem label

Ok, closing this. I believe I had a separate bug at the time that I was hitting.

tannewt

[adafruit/circuitpython] Issue closed: #1252 Unable to change filesystem label

[slender iron]

<@&356864093652516868> Notes doc for the meeting tomorrow is here: https://docs.google.com/document/d/1lrfMMQsF2ly2Pb3i0Cs9rbyWpUtDnp4XvAdVJiGnAxc/edit?usp=sharing

[manic glacier]

tannewt

[adafruit/circuitpython] New comment on pull request #943: Add pixelbuf for accelerating NeoPixel operations

Please let me know when this needs another look. Thanks!

tannewt

[adafruit/circuitpython] New comment on issue #1441: Sort releases into folders by language

Sorting them in S3 by language would be nice. Should be a change here: https://github.com/adafruit/circuitpython/blob/master/tools/build_release_files.py

tannewt

[adafruit/circuitpython] New comment on pull request #1415: RFC: async/await \+ uselect \+ i2cslave

Deep sleep sounds awesome. You've done more async than I have now. :-)

[clear halo]

Hi folks, below is a gist I've created in response to the request for feedback for #circuitpython-dev2019:
https://gist.github.com/mattytrentini/d5b22a1bce46aaaea3dc26dca4a10a13
Hope it helps!

[scarlet fjord]

can someone take a look at this and tell me why my buttons are recognising a key press event, but not a key release event? I'm 90% sure the code for that hasnt changed since last i touched it, but maybe im missing something?
https://github.com/Flesh-CoatedTechnology/CircuitPython-Gamepad/blob/master/CircuitPython Code/main.py

im pretty sure it has to have something to do with mcp1.gpio, cause that same code was working fine with directly checking the MCP23017 pins

yeah, ok i just tested it - the following code works, but the commented-out parts do not, despite in theory being the same thing??

while True:
    #buttons = []
    #gpio_output = mcp1.gpio
    #for i in range(16):
        #buttons.append(bool(gpio_output & 1 << i))
    #for button in buttons:
    for key in kbd_switches:
        index = kbd_switches.index(key)
        #index = buttons.index(button)
        if not key.value:  # was a key pressed?
        #if not button:  # was a key pressed?

[tawny creek]

@scarlet fjord not sure if this will help, but have you seen this? https://github.com/adafruit/Adafruit_CircuitPython_Debouncer

[scarlet fjord]

no, its not a debouncing issue - the keys literally only get 'pressed' when i use the gpio command - they don't ever get to a 'released' state

[manic glacier]

silvester

[adafruit/circuitpython] New star added

[craggy harbor]

How can I use an analog pin as digital In? It always gives me false and I think I would need something like a pullup.
What I use for buttons on digital pins is:
button = DigitalInOut(board.D4)
button.direction = Direction.INPUT
button.pull = Pull.UP

[manic glacier]

gianricardo

[adafruit/circuitpython] New star added

[tulip sleet]

@craggy harbor Can you give a specific example that does not work of code, pin, and tell us which board?

[marble hornet]

I don't see where i can include include or exclude the i2c slave in mpconfigboard.mk or surrounding files

i'm looking in the crickets

it isn't ```FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_seesaw

[tulip sleet]

@marble hornet it isn't a frozen module, it's native. Look for CIRCUITPY_I2CSLAVE in the mpconfig*.h files.

[marble hornet]

looking

i'm not seeing it in (->) is that the right directory ? /circuitpython/ports/atmel-samd/boards/circuitplayground_express_crickit/mpconfigboard.h

[tulip sleet]

ag SLAVE ../.. |grep mpconfi
../../ports/atmel-samd/boards/feather_m4_express/mpconfigboard.h:45:#define CIRCUITPY_I2CSLAVE
../../ports/atmel-samd/boards/feather_m0_express/mpconfigboard.h:41:#define CIRCUITPY_I2CSLAVE
../../ports/atmel-samd/boards/metro_m4_express/mpconfigboard.h:47:#define CIRCUITPY_I2CSLAVE
../../ports/atmel-samd/boards/metro_m0_express/mpconfigboard.h:46:#define CIRCUITPY_I2CSLAVE
../../ports/atmel-samd/boards/grandcentral_m4_express/mpconfigboard.h:48:#define CIRCUITPY_I2CSLAVE
../../ports/atmel-samd/mpconfigport.h:276:    #ifdef CIRCUITPY_I2CSLAVE
../../ports/atmel-samd/mpconfigport.h:277:        #define I2CSLAVE_MODULE { MP_OBJ_NEW_QSTR(MP_QSTR_i2cslave), (mp_obj_t)&i2cslave_module },
../../ports/atmel-samd/mpconfigport.h:279:        #define I2CSLAVE_MODULE
../../ports/atmel-samd/mpconfigport.h:317:        I2CSLAVE_MODULE \

it's either defined or it isn't. That's actually non-standard -- it should be (0) or (1). I'm planning to refactor all of this but haven't started yet: https://github.com/adafruit/circuitpython/issues/1434

[marble hornet]

okay, so the #define CIRCUITPY_I2CSLAVE means it is included ?

[tulip sleet]

yah

[marble hornet]

in the m4?

[tulip sleet]

yes, see ports/atmel-samd/boards/feather_m4_express/mpconfigboard.h

also in Metro M4, Feather and Metro M0 express and Grand Central M4

[marble hornet]

oh! awesome. thank you

i didn't realize. is there documentation?

i took a quick glance through the read the docs but i;m not seeing the i2c slave section (3.x)

[tulip sleet]

In latest, not 3.x: https://circuitpython.readthedocs.io/en/latest/shared-bindings/i2cslave/I2CSlave.html

latest is the tip of master

aka 4.0 right now

[marble hornet]

i didn't know latest existed

😅 😂

[tulip sleet]

look at the left sidebar in readthedocs, and then look at the bottom right of the sidebar. I don't like this: it should be a clearly visible choice at the top, kind of like the dropdown in the python.org documentation.

[marble hornet]

😁 , one "last😉 " question: what do i send back once the master has given a request. another request? or some other class? or is there some example code you know of?

oh

https://circuitpython.readthedocs.io/en/latest/shared-bindings/i2cslave/__init__.html

[tulip sleet]

there you go - iwas looking for an example

[marble hornet]

i haven't learned with in python. what's the advantage of with foobar: if foobar is already defined?

[tidal kiln]

in general - it takes care of initialization and de-initialization of foobar automatically

and good example is file access:

with open(file) as f:
    f.write(stuff)
    f.write(more_stuff)

there's no need to close the file - it is done for you

"context manager" is the term for what this is

[prime flower]

(busdevice is the best example of using with, I feel)

@marble hornet https://circuitpython.readthedocs.io/en/3.x/docs/design_guide.html#lifetime-and-contextmanagers

[tidal kiln]

yep, that's a good example also, and good to see how the "context manager" is kind of general purpose. consider typical i2cdevice usage:

with i2cdevice as i2c:
    i2c.write(stuff)

the first line calls this:
https://github.com/adafruit/Adafruit_CircuitPython_BusDevice/blob/master/adafruit_bus_device/i2c_device.py#L157
so it takes care of locking the i2c bus

when the code block is done, this gets called:
https://github.com/adafruit/Adafruit_CircuitPython_BusDevice/blob/master/adafruit_bus_device/i2c_device.py#L162
which then unlocks the bus

so using the context manager both simplifies your code and makes it safer, since it is a common code mistake to forget to close a file or unlock an i2c bus

[marble hornet]

Okay, so it can do temp renaming? What about without a second name

[tulip sleet]

it's not mainly renaming, it's calling __enter()__ and __exit__() operations, which do setup and cleanup.

here's an oldy-but-goody explanation for Python 2.x: http://effbot.org/zone/python-with-statement.htm

also https://jeffknupp.com/blog/2016/03/07/improve-your-python-the-with-statement-and-context-managers/

[tidal kiln]

"without a second name" -> do you mean without the as? like if you did:

with i2cdevice:
    # stufff

[stuck elbow]

I'm trying to do the git submodule init on a fresh pull, and I'm getting

error: Server does not allow request for unadvertised object b96950abf27229c2a3b1719d60691321246bfc94
Fetched in submodule path 'ports/nrf/nrfx', but it did not contain b96950abf27229c2a3b1719d60691321246bfc94. Direct fetching of that commit failed.

what could be wrong?

made a fresh clone and that worked

[plucky flint]

@stuck elbow I also find switching things off and on again and/or hitting them with a spanner also work when GIT starts playing up.... 😉 HNY to you!

[stuck elbow]

I don't think I have a spanner large enough for git

all the best

[plucky flint]

Heh...

[stuck elbow]

oh, a new an exciting error!

LINK build-feather_nrf52840_express/firmware.elf
/usr/lib/gcc/arm-none-eabi/6.3.1/../../../arm-none-eabi/bin/ld: error: build-feather_nrf52840_express/firmware.elf uses VFP register arguments, /usr/lib/gcc/arm-none-eabi/6.3.1/../../../arm-none-eabi/lib//libm.a(lib_a-sf_atan.o) does not

I think they accidentally a verb

[tulip sleet]

"does not [use VFP register arguments]"

"I cook with butter, Pierre does not."

[stuck elbow]

thanks, I can't English

[tulip sleet]

it's a strange language

did you try versions past 6.3.1? We build with 7.3.1 nowadays./

[stuck elbow]

googling around, it seems to be a 32bit/64bit mismatch

goes looking for the gcc-arm-none-eabi ppa

[tulip sleet]

http://ppa.launchpad.net/team-gcc-arm-embedded/ppa/ubuntu

A new gcc-8 based toolchain was just released in late december: we haven't tried it yet: https://developer.arm.com/open-source/gnu-toolchain/gnu-rm/downloads

[fathom lava]

@meager fog @slender iron Could I get help pulling a USB VID/PID for the SparkFun SAMD21 Mini Breakout for UF2 and CircuitPython profiles? Right now, a fresh SAMD21 Mini Breakout has VID=0x1B4F and PID=0x8D21 with the Arduino bootloader.

[tulip sleet]

@timber mango: here is the gcc8 version. They deleted the previous one!
https://launchpad.net/~team-gcc-arm-embedded/+archive/ubuntu/ppa

I'm confused why I haven't been upgraded automatically, because I have this ppa already set up.

[stuck elbow]

ugh, they changed the package name

to gcc-arm-embedded

[tulip sleet]

it looks like it was gcc-arm-embedded, and now is gcc-arm-none-eabi

[stuck elbow]

the ppa has gcc-arm-embedded, the ubuntu packages are gcc-arm-none-eabi

[tulip sleet]

@fathom lava did you want a different PID?

[stuck elbow]

dpkg: error processing archive /var/cache/apt/archives/gcc-arm-embedded_7-2018q2-1~bionic1_amd64.deb (--unpack):
 trying to overwrite '/usr/bin/arm-none-eabi-addr2line', which is also in package binutils-arm-none-eabi 2.27-9ubuntu1+9

[fathom lava]

@meager fog @slender iron Please disregard my message. Jim at SFE is able to get me 2 PIDs and keep the SparkFun VID.

[tulip sleet]

https://launchpad.net/~team-gcc-arm-embedded/+archive/ubuntu/ppa

[fathom lava]

@tulip sleet That was the original intention, but it after chatting with Jim, I can keep the VID. From what I understand, I do need different PIDs for the UF2 and CP profiels.

*profiles

[stuck elbow]

and of course:

dpkg: error processing archive /var/cache/apt/archives/gcc-arm-embedded_7-2018q2-1~bionic1_amd64.deb (--unpack):
 trying to overwrite '/usr/lib/libcc1.so.0.0.0', which is also in package gcc-avr 1:5.4.0+Atmel3.6.0-1build1

so now I have a choice, arm or arduino

[tulip sleet]

@void yew most of our boards have three VIDs: one for the uf2 bootloader, one for arduino, and one for CircuitPython. A few have a fourth VID for a bossac-only bootloader

all PIDs are 0x239A

@timber mango I thought arduino packaged up its own compiler (they're on 4.something still)

[stuck elbow]

ubuntu doesn't allow such things

well, debian doesn't allow such things

each project has a separate package

[tulip sleet]

i mean I don't use the debian package for Arduino IDE - I use the downloaded version from arduino.cc

[stuck elbow]

makes it easier to keep security updates in check

[tulip sleet]

the debian package was way out of date the last time I looked. We have to use the latest to keep up with the users so we can do support.

[fathom lava]

@tulip sleet Hmm...would you like to use the 0x239A for CircuitPython on the SparkFun SAMD21 or keep the SparkFun VID? I'm happy with either.

[tulip sleet]

0x239a is the PID we bought for Adafruit years ago. It's fine to use the SparkFun PID for that board - it's a SF board after all.

[stuck elbow]

what I do is: I install the debian package to get all the necessary requirements (java and whatnot), and then use zip downloaded from arduino.cc

[fathom lava]

@tulip sleet Will do, thanks 😃

[tulip sleet]

@fathom lava I'll point Limor to this thread just in case she has a different idea, but sounds good to me.

[fathom lava]

@tulip sleet It looks like Jim kept the SparkFun IDs on the nRF board, so I was following that.

[tulip sleet]

@timber mango If you can get it to work, that sounds good - i would worry about compatibility if the cores and the libraries assume a certain compiler

[stuck elbow]

Adafruit CircuitPython 4.0.0-alpha.5-53-g555da95cf on 2019-01-07; Adafruit Feather nRF52840 Express with nRF52840

[tulip sleet]

@fathom lava Makes sense. You may want to talk to @ ntoll re Mu's detection of the different boards. We recently submitted a patch to detect any adafruit board with PID=0x239A as CPy.

@timber mango which compiler is that? 👍

[stuck elbow]

the one from the ppa

had to uninstall gcc-avr

[tulip sleet]

gcc 8? That's great. I was waiting for it to appear. I think it will make the firmware images a bit smaller.

[fathom lava]

@tulip sleet Good to know, thanks. I'll look into it--I had trouble getting Mu to detect my MKRZERO even with an Adafruit ID.

[stuck elbow]

@tulip sleet no, it's Version: 7-2018q2-1~bionic1

[tulip sleet]

that's the gcc we're building with now for everything

but which ppa?

[stuck elbow]

the one you linked

[tulip sleet]

This one has gcc8: https://launchpad.net/~team-gcc-arm-embedded/+archive/ubuntu/ppa I linked that second.

[idle owl]

@clear halo Thanks for the post!

[tulip sleet]

8-2018q4

@timber mango - ah ok, they are both in the file-serving part: http://ppa.launchpad.net/team-gcc-arm-embedded/ppa/ubuntu/pool/main/g/gcc-arm-none-eabi/

both gcc-arm-embedded and gcc-arm-none-eabi

no, i'm wrong the .deb's are only 7-2018q2

🤦 ??

the gcc8 builds are broken

ok, forget this for now. I'll try the gcc8 download from arm.com some time to see if it builds, but until they get the packages straight, not worth upgrading, because it makes life harder for everyone to have to manually download and unzip the toolchain.

[idle owl]

@slender iron I added MattyT's post from yesterday in the #circuitpython-dev channel to the notes under the list you had for people who had posted.

[fathom lava]

@tulip sleet or @slender iron The pinout chart in the SAMD21 port README (https://github.com/adafruit/circuitpython/tree/master/ports/atmel-samd) is super useful but is become a bit too unwieldy to use. I'm wondering if I can copy it over to a spreadsheet (publicly shared Google Sheet?) and somehow embed it into the README to make the chart easier to maintain and read. Do you have any suggestions on the best way to do that? If there's not a great solution, I'm happy to keep it in RST.

[idle owl]

@fathom lava I feel like someone else already did this...

Oh wait, no not that chart.

Different pinout chart.

[fathom lava]

@idle owl Oooh!

@idle owl Aw...

[craggy harbor]

@tulip sleet Re: analog pin as digital: I have a Feather M4 Express and this is my code:

button = AnalogIn(board.A3)
while True:
print(button.value)

[idle owl]

@fathom lava Sorry for the momentary excitement into disappointment 😄

[fathom lava]

@idle owl Do you know what they used? I'm happy to do the same thing with that pinout chart

lol

[idle owl]

@fathom lava Someone did the pinouts for the different ATSAMD chips overall. It was a spreadsheet, they never put it into anything else afaik.

Also not even sure they ever made it public because it was still a work in progress when I viewed it.

If there was a way to at least keep the first column static, it might be a lot easier to use what's there.

[fathom lava]

Agreed, but that seems to be a Markdown/RST rendering limitation

[idle owl]

Sounds about right.

Too bad you can't do two tables next to each other.

One table is one column only.

[slender iron]

@idle owl thanks! reading it now

@clear halo thanks for the #circuitpython-dev2019 post. would love to chat more about it with you. did you know we post notes for every weekly meeting that you could skim instead of watching it all?

any cpy libs on rpi folks? https://forums.adafruit.com/viewtopic.php?f=60&t=145782

[manic glacier]

hathach

[adafruit/circuitpython] New comment on pull request #1408: added pulsein using nrfx gpiote \(gpio interrupt\)

@jerryneedell I just received the DHT22, wiring it up and get something similar to your output. Will work on this tomorrow.

Press any key to enter the REPL. Use CTRL-D to reload.-3276.7 6553.5            
 RunTime Error  Checksum did not validate. Try again.                           
-3276.7 6553.5                                                                  
-3276.7 6553.5                                                                  
 RunTime Error  Checksum did not vali...

[tidal kiln]

@slender iron responded

[slender iron]

thanks @tidal kiln for the forum help!

[tulip sleet]

@craggy harbor
instead of

button = AnalogIn(board.A3)
while True:
    print(button.value)

do

button = DigitalInOut(board.A3)
...

Just because it has an "A" name doesn't mean you can't treat it as a DigitalInOut.

The "A" just means it's definitely analog capable. It's digital-capable too.

[meager fog]

@tidal kiln the AM2320 is really 'marginal' - may take a few tries to read data from it

it goes to sleep in an odd way

[tidal kiln]

@meager fog thanks. yep. was thinking same. just making sure of wiring first. will suggest that next. (and i have one i can test with if needed)

[errant grail]

... just lurking today.

[slender iron]

<@&356864093652516868> meeting in two minutes

[solar whale]

Sorry, can’t make it today. Group hug to all!

[slender iron]

np @solar whale

[marble hornet]

Just lurking until off bus

[tidal kiln]

lurking this week. group hug. welcome back and congrats to scott.

[gusty kiln]

hey all - had something come up, missing first part of meeting.

[idle owl]

@gusty kiln Np. Thanks for letting us know 😃

Community members have posted them through GitHub, in a gist, in a blog post, basically any way you want to express your thoughts is great! #circuitpython-dev2019

[marble hornet]

Please do

Just got off

The bus**

[slender iron]

http://madewith.mu/mu/users/2019/01/04/CircuitPython2019.html

[raven canopy]

I yield my "last but not least" slot to TG-Techie.... 🙇 😄

[slender iron]

https://github.com/CedarGroveStudios/CircuitPython2019/blob/master/README.md

[pastel panther]

Hi everybody! Not much for me today but I thought I would check in and give a nice big group hug to everyone. I just sent off a new breakout board for the INA260 to OSH Park and I'm now working on getting a Huzzah breakout and AM2315 talking to adafruit.io to log temp and humiditity for my friends fancy-organic-mushroom farm.

I will write a #circuitpython-dev2019 post but I'll have to figure out where to put it as I don't actively use any social media platforms at the moment.

Happy belated holidays to everyone and happy hacking in the new year!

[slender iron]

http://dopieralski.pl/posts/2019-01-04-circuitpython/

https://gist.github.com/mattytrentini/d5b22a1bce46aaaea3dc26dca4a10a13

[gilded cradle]

I still plan on writing a list. Just haven't gotten around to it yet.

[umbral dagger]

Ah.. congrats!

[slender iron]

https://www.reddit.com/r/circuitpython

https://blog.adafruit.com/2019/01/07/which-open-source-business-models-may-be-considered-harmful-opensource-history/

[gusty kiln]

wasn't here at start of hug reports, but i'll just throw out a group hug / happy new year. unsure if my mic is gonna work.

[craggy harbor]

@tulip sleet thanks! I tried that before and it didn't really work, but now it does 😄 👍🏼

[idle owl]

The CircuitPython2019 posts do not need to be long - even a few sentences about what your thoughts are is brilliant.

[turbid radish]

Again, if you want Adafruit to publicly post on social media your #circuitpython-dev2019 , post to a blog or GitHub or other public forum and let us know you're ok with the posting. Private messages will not be sent out in this fashion.

[tidal kiln]

👍 learning C!

C will let you pwn the metal

[umbral dagger]

C is fun. C++ is a evil drooling beast hiding under your bed.

An advantage of knowing C is that it's still probably the most ubiquitous language.

[marble hornet]

As you C fit ?😉

[turbid radish]

Just moderating dastel's debouncer guide now 😮

[umbral dagger]

@turbid radish Good stuff!

[marble hornet]

Can you post a link too?

[slender iron]

https://www.adafruitdaily.com/

[raven canopy]

:sitting_tight:

[turbid radish]

Use GitHub for posts if that works

[idle owl]

@pastel panther You can put your cp2019 post in a Gist for example if you want.

@pastel panther Ping me for other options if you're interested.

@raven canopy 👍

[turbid radish]

Microsoft just made having private GitHub repos free https://t.co/2kH37oIrqe

[umbral dagger]

Huh... that's why I migrated my private repos to bitbucket.... but it's still Microsoft... and old habits die hard. (I.e. pretty much making a career out of despising them)

[turbid radish]

https://twitter.com/MicrosoftEDU/status/1082339338543874050

Microsoft Education (@MicrosoftEDU)

To help prepare students for the digital future @MSMakeCode is joining @CartoonNetwork & Adafruit to develop a set of projects & tutorials to inspire students to code & create! Discover how you can introduce coding to your classroom here: https://t.co/fX0zWKhNOi #Microsoft...

Twitter

[idle owl]

That would be great.

[inland tusk]

Some one talked about fixed size fonts

[inland tusk]

word processors abd older os's call it courier 10 pt fixed space font

[stuck elbow]

it's 3x5 pixels

[inland tusk]

correct

[stuck elbow]

(actually 4x6, because spacing between the letters)

[inland tusk]

actually 5 x 7

[stuck elbow]

the one I showed is 4x6

but there are extra 2px between the lines

[marble hornet]

Could tensor thin

[stuck elbow]

@slender iron the Japanese are gaining on us! https://twitter.com/wifiboy_org

wifiboy.org (@wifiboy_org)

WiFiBoy IoT Game Dev Kit Official Twitter Account.

Tweets

25

Followers

135

Twitter

[errant grail]

Thanks from lurk-land!

[slender iron]

https://github.com/Tecate/bitmap-fonts/

[marble hornet]

@slender iron got the USB c ports working!

[meager fog]

did anyone here not get a grand central?

[ruby atlas]

I should get mine tomorrow if the snowstorm doesn't delay it

[main meteor]

Missed the window, waiting for more. I now have a better understanding of the production issues, too.

[manic glacier]

martinborgman

[adafruit/circuitpython] New star added

[meager fog]

@main meteor there's some more in stock now https://www.adafruit.com/product/4064

[tidal kiln]

2019 goals += learn to silk like PYD

[manic glacier]

rdmahurin

[adafruit/circuitpython] New star added

[slender iron]

<@&356864093652516868> Here is the meeting recording: https://youtu.be/CL4D3dD8ehU Notes link is in the description

[meager fog]

@umbral dagger heya now that you are a library-crafting expert

wanna take a todo off my long list 😃

[umbral dagger]

heh.. what's up?

[pulsar bloom]

Is there a UF2 to reset the file system on a NRF52840 Feather?

[meager fog]

@umbral dagger i have been meaning to make a soft-spi library, e.g. bitbangio for SPI - good for linux usage

where the GPIO toggling is fairly fast, but SPI ports are rare to come by

would be adafruit_bitbangio.SPI

[slender iron]

@meager fog what flash is on the pyportal? GD25Q64C?

[meager fog]

yes

like the grand central - ch0nky

[slender iron]

kk, thats what I copied from 😃

[umbral dagger]

@meager fog what about adafruit/circuitpython/shared-module/bitbangio/SPI.c ?

[slender iron]

can't be used on rpi

[meager fog]

yeah this is for linux boards & other setups where we have to fake it

trick is to support all the MODEs

(there's 4)

but otherwise, the code's not complex, im just out of time 😃

[umbral dagger]

ah. ok.

[manic glacier]

tannewt

[adafruit/circuitpython] Pull request opened: #1442 Initial pass at pyportal board define\.

It's not out yet. Don't ask. ;-)

[meager fog]

@umbral dagger you up for it?

[umbral dagger]

Let's do it

Anything to start from?

[meager fog]

@umbral dagger alrighty - https://github.com/adafruit/Adafruit_Blinka/issues/24 is the issue to watch

https://github.com/adafruit/Adafruit-GFX-Library/blob/master/Adafruit_SPITFT.cpp#L389

is the simplest 'mode 0'

i'd dig having i2c bitbang as well

http://abyz.me.uk/rpi/pigpio/index.html apparently has bitbang

good news: its public domain

but....its a 10K LOC file https://github.com/joan2937/pigpio/blob/master/pigpio.c

[modern wing]

@slender iron Couldn't join this morning, so thanks for the recording. I'll be watching it later tonight/tomorrow.

[tawny creek]

@stuck elbow Is wifi boy Japanese? I thought it was Taiwanese 😮

[slender iron]

Anyone make a ps2 to usb circuitpython adapter? 😃

[tidal kiln]

CLICKing intensifies...

[slender iron]

😃

I should record a meeting with it

[tidal kiln]

WHAT?

[slender iron]

I couldn't help myself for $1.50

[modern wing]

"Would the person with the IBM Model M please mute your mic. Wait, it's already muted?"

....woah, I'm jealous. That's an awesome price for those.

[slender iron]

😃

[tidal kiln]

seen this?
https://learn.adafruit.com/convert-your-model-m-keyboard-to-bluetooth-with-bluefruit-ez-key-hid/overview

[slender iron]

the model number sticker is gone so I'm not sure what version it is exactly

[umbral dagger]

@slender iron Wow. I was under the impression those things were the holy grail.

[slender iron]

thanks @tidal kiln reading now

[umbral dagger]

Nice keyboard.. .but IMO Sun's early ones are better.

[slender iron]

makes me want to get a circuitpython terminal going

thats the one they had ¯_(ツ)_/¯

[tidal kiln]

yah, can't beat that price. those are typically marked much higher when stores know what they are.

[slender iron]

that's why value village is my goto store

k, gotta open it. I'm too curious

[tidal kiln]

you should add the goodwill to your route also

[slender iron]

I do usually. all good goodwill stuff ends up online

[umbral dagger]

Huh.. there's a goodwill not far from us. I should cruise it occasionally.

[modern wing]

I've had atrocious luck at goodwill and salvation army -- but I just looked it up, there's a value village about 30 mins from me...

[slender iron]

should I throw it a birthday party?

[ruby atlas]

yes, one involving lots of neopixels

[umbral dagger]

made in '92.... that's so new.

And it has that horrible IBM layout.

Those keys, though...

[craggy harbor]

led2 = AnalogOut(board.A2)

This throws an error used on a Feather M4 Express:
ValueError: AnalogOut not supported on given pin

How? 😮 It's an "A" pin....

[slender iron]

the A designation is for input

[craggy harbor]

I seeeee

[slender iron]

only A0 and A1 on the M4 support output

[craggy harbor]

That's a pity, but thanks!

[slender iron]

A0 only on M0

np

[craggy harbor]

ok 😃

[severe void]

Pretty sure my wife would love that keyboard.

[magic wing]

Anyone heard of Unicomp?

THey make a decent USB Model M clone. Loved mine.

Same buckling spring keys. Saved my wrists from carpal tunnel!

[manic glacier]

qubist

[adafruit/circuitpython] Issue opened: #1443 Audio doesn't play if class defined

I'm having a very odd issue. Using the audioio library to play sounds, if I define a class before I play my sound using mixer.play() the sound file isn't played. Commenting out the class definition makes the sound play flawlessly.

Here's my code:

import board
import audioio

def makeMixer():
    audio = audioio.AudioOut(board.A1, right_channel=board.A0)
    mixer = audioio.Mixer(voice_count=1,
                          sample_rate=22050,
                          channel_c...

[clear halo]

@slender iron I didn't realise that the weekly meetings had notes until after I'd posted my feedback! Those notes will be fantastic for me, thanks to you and all the folks that collate them. 😃 And sure, happy to chat any time about the feedback. Shoot me a DM if you'd like to chat over email...

[manic glacier]

dhalbert

[adafruit/circuitpython] Pull request closed: #1442 Initial pass at pyportal board define\.

dhalbert

[circuitpython:master] 3 new commits

d3aeca1 Initial pass at pyportal board define. - tannewt
a49683e Build with Travis - tannewt
172311f Merge pull request #1442 from tannewt/pyportal - dhalbert

dhalbert

[adafruit/circuitpython] New comment on issue #1443: Audio doesn't play if class defined

This might be related to #1218. Not clear that the global dictionaries are doing long-lived exactly right.

[clear halo]

Also, I saw the Debouncer library by @umbral dagger - which looks neat! But this has been solved in MicroPython using asyncio in a way that seems far more elegant (no spin loops!):

https://github.com/peterhinch/micropython-async/blob/master/DRIVERS.md

No disrespect intended to @umbral dagger - without asyncio that's a great solution. :)

I'm just curious about the status of asyncio since it's totally changed my development style on embedded devices (I even gave a PyCon AU talk about it!). Seems that it's not implemented in CircuitPython yet?:

#619: "asyncio, async and await would be super helpful": https://github.com/adafruit/circuitpython/issues/619

I wasn't aware it wasn't implemented; adding asyncio would have been another entry on my 2019 wishlist!

[tulip sleet]

@clear halo People are experimenting with async/await in CPy. See https://github.com/adafruit/circuitpython/issues/1380 for some thoughts (the first post is less general than some of the discussion) and https://github.com/adafruit/circuitpython/pull/1415 (examples of async/await).

We are very much interested in making async processing approachable to the beginner, not just the professional programmer.

That is the primary reason we have not enabled hard interrupt handling, etc. We are interested in providing the concepts, but not necessarily via the mechanisms that people ask for right away (e.g. interrupts)

[clear halo]

Thanks @tulip sleet , that's helpful. I'll be sure to read them more thoroughly later. Notro has done some nice work - and come to the same conclusions as I have about deep sleep working in conjunction with the asyncio event loop.

However I do feel that asyncio is quite accessible, especially for a concurrency primitive! But then maybe I'm not your target market... ;)

Just for reference the core of the MicroPython asyncio implementation is pure python of about 300 lines:
https://github.com/pfalcon/micropython-lib/blob/master/uasyncio.core/uasyncio/core.py
If you do want higher-level abstractions for concurrency it seems like they should be built on top of asyncio (since it ought to be there for CPython compatibility anyway)...

[manic glacier]

JoshuaEnglish

[adafruit/circuitpython] New star added

[modern wing]

@magic wing I have one of the Unicomps -- got it back in 2003 or so. College roommate....did not appreciate it, to put it mildly 😛

[pastel panther]

anyone with an AM2315 want to check something for me?

[stuck elbow]

@tawny creek possible, I was going by location specified on the Twitter account

[timber mango]

is there any example out there that shows how to write a CP library with parts in C/C++ ?
i would like to have a look at this and try to port the core or parts of my lib to C/C++ to speed up things..

[umbral dagger]

@clear halo asyncio is on my 2019 list as well.

@timber mango https://learn.adafruit.com/extending-circuitpython gives an introduction.

[marble hornet]

Building metro_m4
echo "#define UF2_VERSION_BASE \"v2.0.0-adafruit.8\""> build/metro_m4/uf2_version.h
echo "src/flash_samd51.c"
src/flash_samd51.c
arm-none-eabi-gcc -mthumb -mcpu=cortex-m4 -O2 -g -DSAMD51 -x c -c -pipe -nostdlib --param max-inline-insns-single=500 -fno-strict-aliasing -fdata-sections -ffunction-sections -

A LOT OF TEXT HERE

python2 scripts/gendata.py 16384 build/metro_m4/bootloader-metro_m4-v2.0.0-adafruit.8.bin
make: python2: No such file or directory
make: *** [build/metro_m4/selfdata.c] Error 1```

i;m trying to build the uf2 boot loader for the metro m4 but am getting an issue , does this look familiar to does anyone know why selfdata.c might be missing?

[manic glacier]

chalei

[adafruit/circuitpython] New comment on pull request #1370: String internationalization for Bahasa Indonesia

@tannewt I have successfully remove the error and updated the translation

Hi! Thank you for this! I'm excited to see another translation. We should merge this before you translate all the strings. I'll merge it once Travis passes. The current error is listed here: https://travis-ci.org/adafruit/circuitpython/jobs/462636827#L1079 Let me know if you need help getting it going. Thanks!

[marble hornet]

nm it loaded!!!!!!

yaya!!!!!!!!

[manic glacier]

TG-Techie

[adafruit/circuitpython] Fork created: TG-Techie/circuitpython

[marble hornet]

Woo WHOO!!! and it works with the metro m4 cp uf2 files

[raven trail]

Error while using Circuit playground express with Mu IDE.

I Can't copy the file.

I tried re flash it . But same error agin. Can't flash anything

Hi

Problem solved when i use storage.erase_filesystem()

Thanks

[umbral dagger]

@raven trail Yes, that will do it. It seems to get into a read-only state at times. It’s actually been a while since I’ve seen that; maybe 4.0 is more robust in that way.

[keen jay]

Morning! I'd love to volunteer on CircuitPython, but I'm not sure how to get started or where I could be helpful... Any suggestions?

[stuck elbow]

@keen jay there is a lot of possibilities, just a few: github issues have "good first issue" labels, you can try with those, you can also help with translations or documentation. We have weekle meetings on Mondays where we discuss what has been done and what we intend to do, so coming to those is sure to give you some ideas as well.

@keen jay what are you most interested in?

[keen jay]

I could definitely help for English-French translation and for documentation. I'll have a look at the "good first issue" labels to see if there's something I could work on. I'll also try and attend the meetings on Monday

[tulip sleet]

@marble hornet Yay! Congrats! I believe the error you saw is that python2 isn't installed. It's used to generate update-bootloader....uf2, and maybe some other things.

[marble hornet]

yet is still compiled the bootloader?

thanks 😅

[tulip sleet]

it isn't needed for the basic .bin. So the build failed after it successfully built the .bin

there's a uf2conv.py (this is from memory)

[marble hornet]

to update the bootloader?

[tulip sleet]

right, it's not building the update uf2's. There's this line in the Makefile:

    python2 lib/uf2/utils/uf2conv.py -b $(BOOTLOADER_SIZE) -c -o $@ $(BUILD_PATH)/update-$(NAME).bin

[marble hornet]

i recently reset my mac so i only have installed what i need i'll keep it in mind for the future. and that's so cool!

also, can i define aref as an io pin for must it stay aref in pins.c?

based on metro m4

[tulip sleet]

the internal aref is broken on the SAMD51. Check the errata. So you have to use the external AREF if you want an analog reference voltage. So we dedicated a pin to that.

[marble hornet]

okay 😀 👌

../../supervisor/shared/external_flash/external_flash.c:48:78: note: in expansion of macro 'EXTERNAL_FLASH_DEVICES'
 const external_flash_device possible_devices[EXTERNAL_FLASH_DEVICE_COUNT] = {EXTERNAL_FLASH_DEVICES};
                                                                              ^~~~~~~~~~~~~~~~~~~~~~
<command-line>:0:54: error: 'W25Q64JV' undeclared here (not in a function); did you mean 'W25Q16JV'?
../../supervisor/shared/external_flash/external_flash.c:48:78: note: in expansion of macro 'EXTERNAL_FLASH_DEVICES'
 const external_flash_device possible_devices[EXTERNAL_FLASH_DEVICE_COUNT] = {EXTERNAL_FLASH_DEVICES};
                                                                              ^~~~~~~~~~~~~~~~~~~~~~
<command-line>:0:64: error: 'W25Q128JV' undeclared here (not in a function); did you mean 'W25Q16JV'?
../../supervisor/shared/external_flash/external_flash.c:48:78: note: in expansion of macro 'EXTERNAL_FLASH_DEVICES'
 const external_flash_device possible_devices[EXTERNAL_FLASH_DEVICE_COUNT] = {EXTERNAL_FLASH_DEVICES};
                                                                              ^~~~~~~~~~~~~~~~~~~~~~
make: *** [build-datalore_ip_m4/supervisor/shared/external_flash/external_flash.o] Error 1```

i checked devices.h and all of these are in there

i've used some before too

[manic glacier]

Blaaguuu

[adafruit/circuitpython] New star added

[lethal abyss]

@stuck elbow wifiboy boards looks good. not as cute as your pew pew, but also nice 😉

[stuck elbow]

@lethal abyss and it should run my games with minimal modifications to the code

[timber mango]

@umbral dagger regarding CP & C/C++
thanks for the link!
if i read this correctly it only works when the code is included into the cp build itself?!
no way to create an optional library that has some c code precompiled for all the available CP-Builds with it....
so the functionality needs to be interesting / general enough for all users to be accepted into the main build...

some time ago i played with cython - and with this it was really easy to add parts in c and use them from python..

• but i don't remember how this worked in the background.. 😉

[manic glacier]

tannewt

[adafruit/circuitpython] New comment on pull request #1370: String internationalization for Bahasa Indonesia

@chalei Thank you for fixing this up. I think a merge is still needed to get new strings. Please let us know if you'd like us to help get it committed. Thanks!

[solar whale]

@timber mango you can clone the CP repository and create a custom build with your C code. It does not have to be Included in the released version.

[pastel panther]

hey @solar whale you said you got a CP board talking to adafruit.io? presumably using an ESP like you helped me hook up?

[solar whale]

Yes. Oops plane door closed! I’ll be off for a few hours. I can give you an example this evening.

[pastel panther]

ok, thanks, ttyl.

[umbral dagger]

@timber mango Correct, CircuitPython does not have an FFI.

[timber mango]

@solar whale i know - my ItsyBitsy M4 are running git master builds currently ;-)
but its not as 'practical' if you want to write something that is accessible to 'everybody'.

[pastel panther]

@timber mango Getting something cython like working would be both extremely cool and pretty tricky. It's a topic I'm personally very interested in but would also be quite and undertaking

[lethal abyss]

@deshipu you mean with pew library?

[upbeat plover]

@umbral dagger oo i like that Extending CP, that must be newish first time ive seen it

[umbral dagger]

@upbeat plover mid November

@upbeat plover Glad you liked it.

[manic glacier]

chalei

[adafruit/circuitpython] Pull request opened: #1444 Merge Bahasa Indonesia String internationalization

The previous pull request cannot merge due to conflicts

chalei

[adafruit/circuitpython] Pull request closed: #1444 Merge Bahasa Indonesia String internationalization

[marble hornet]

hey all, i'm running the below code in 4.0.0-alpha.5-56-g172311fad and it is going right back into cirpy

mc.on_next_reset(mc.RunMode.BOOTLOADER)
time.sleep(1)
mc.reset()```

[manic glacier]

chalei

[adafruit/circuitpython] Pull request opened: #1445 Create ID\.po to Merge Bahasa Indonesia String internationalization

The previous pull request cannot merge due to conflicts

[marble hornet]

any thoughts on why? ^^^

doesn't work in 3.1.2 either

[upbeat plover]

does it work on other boards?

just tested it from REPL on feather_m4 and it worked

[marble hornet]

try it a ffew times

@tulip sleet is there uf2 i need to put on the board that lock the bootloader? after flashing it