#help-with-rp2040-pio

1 messages · Page 4 of 1

gusty cloud
#

I think that should be good enough for my use

eternal grove
#

GPIO pins are generally not capable of much current, so they do tend to have some effective resistance.

gusty cloud
#

but it's interesting that it's ~0ohms over usb

#

but 55 over vsys (3.3v tho)

eternal grove
#

Indeed, as the chip is presumably powered by 3.3V in both cases.

#

My best guess is a varying 0V reference, but I really don't know.

gusty cloud
#

as long as it triggers a switch, I'll be happy enough

small meteor
#

I would stick to measuring voltage, not resistance.

#

It literally has never occured to me to measure the resistance of the circuit you've described.

#

Traditionally, the Ohmmeter is never used when power is applied to any circuit.

#

They did make transistor checkers; I don't know the principles employed by them.

jagged jewel
#

I'm not sure if this goes here but, I am using a pico and found this https://github.com/adafruit/Adafruit_CircuitPython_OV7670 however I am unable to get the wiring right. On this example(ov7670_displayio_pico_st7789_2in.py) it says customize it to your board but, I don't know how to wire it due to not knowing what wire shutdown, reset or any other wires correspond to on the module. It also asks to Ensure the camera is shut down. However, I don't know how to turn off or turn on the camera. If someone could help me wire it I would be grateful.

GitHub
adafruit/Adafruit_CircuitPython_OV7670

CircuitPython driver for OV7670 cameras. Contribute to adafruit/Adafruit_CircuitPython_OV7670 development by creating an account on GitHub.

zinc temple
#

Hello. I've got a rp2040/pico and i've followed this setup https://learn.adafruit.com/circuitpython-libraries-on-any-computer-with-raspberry-pi-pico/linux I've been using a rpi3 to program / interact with the pico but i want to switch over to a rpi4 i have, so I setup the rpi4 the exact same way as my rpi3, i have the same versions of OS and the libraries that are listed in the link, but when I run the code on the rpi4 I get this error "module 'board' has no attribute 'LED'", in the post check steps from the link I pass through all of them, im not sure if im some how selecting the wrong board? I also tried to use board.GP25 instead of board.LED and i get the same error. I should also say that Im running the code directly on my raspberry pi which is plugged into my pico (lsusb shows the pico with CAFE:4005 on both rpi3 & 4)

Adafruit Learning System
CircuitPython Libraries on any Computer with Raspberry Pi Pico

A simple way to get I2C, SPI, GPIO, ADC, PWM, and NeoPixel support on any PC with USB.

rustic talon
#

Hello! Does anyone know if circuitpython or micropython has support for USB Hosting on the RP2040?
I am working on a USB-> Bluetooth HID "Relay" that will turn my usb keyboard into a bluetooth keyboard. I have an RP2040 module and a Bluefruit LE SPI friend. I'd like to use circuitpython or micropython but can't find much about USB Host support. If it is supported, where can I find documentation? Thanks!!

distant spade
#

@rustic talon I don't think either python has it. TinyUSB (the underlying USB code) does have basic host support though.

rustic talon
modern anchor
#

Hey has anyone made pio able to interface with a CAN bus/ is this even possible?

waxen aurora
#

You'd still need an external transceiver chip to handle the voltage levels. My instinct is that the digital side could be handled by PIO, but I'm not sure if anyone has already implemented this or not.

harsh stratus
modern anchor
harsh stratus
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But I don’t think anyone has implemented it yet

#

It would also take a couple of pio state machines to function

hazy wave
#

I bought i raspberry pi pico the other day and because I’m using a chrome book I couldn’t get any normal ide to work but it seems web based ide work does anyone know why web based ide that allows me to upload code to the pi pico and also read data from the serial ports

gusty juniper
last tartan
gusty juniper
#

Linux is a feature now? Jeez, Chromebooks reversed every part of the whole computer I once knew...

hazy wave
#

I tried all of them with micropython also circuit python booted unto the pico

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I was able to get a website called bipes to work but I couldn’t save the code unto the pico and you can only use blocks for the coding

last tartan
#

you'll need to go into settings (I can't find a help page for it, but search settings for USB) and share the device with Linux

half star
#

I have an Adafruit Feather RP2040 and an Airlif-ESP32 WiFi Co-Processor break out board. I'm struggling with how to wire those together. The AdaFruit learning example uses an RPi Pico board and GPIO's 10-15 but the Feather RP2040 doesn't have GPIO 14 (Busy) and 15 (!RST). Does anyone have an example of the wiring?

gusty juniper
#

I don't know which example you're referencing, but if you link it, I can try to help find the lines that need changing.

lofty sinew
#

Is it possible to send gamepad/joystick data via hid from the Pico?

red bay
#

I think I saw some support built.... but Tinyusb host HID support is still pretty raw. several open branches trying to solve very basic compatibilities

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For example, I would estimate that mouse support is compatible with roughly 10% of devices

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Should be much better as soon as those branches are completed/merged

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(probably 70-80% when GitHub user 'hathach' is able to get back to fixing what appears to be one last bug needed for close/merge of the branches)

lofty sinew
red bay
#

I don't recall seeing an example, but I had seen examples for Arduino stuff... should be possible to port it

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The USB examples are all taken from teh tinyusb code tree; you would want some code from exampled/device/ in one of the hid_* folders

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hid_composite seems to do this

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line 165: case REPORT_ID_GAMEPAD

lofty sinew
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Alright, I'll look into that. Thank you!

devout anchor
hazy wave
eternal grove
#

Permissions problem? Do you have access to the ports? Is some other program grabbing them?

lofty sinew
#

Is there a way to do keypads in c on the Pico?

eternal grove
#

Yes, most keypad code is fairly similar. The general idea is hook (say) the rows to inputs with pullups, and then switch one column to logic low at a time, while leaving the others high-Z. The row inputs that show a logic low correspond to keys pressed for that column.

lofty sinew
#

Is there a library for it, like in circuitpython and Arduino?

eternal grove
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I wouldn't be surprised if there was, and if not, existing library code for another micro could be easily adapted.

lofty sinew
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Alright, thank you

#

I have a Pico for a project, but the parts are going to be a while. Would it be a bad idea to solder on some headed to try some things out?

eternal grove
#

That's what I normally do, solder on some headers and hook stuff up with a breadboard or just push jumper wires on the header pins

lofty sinew
#

And then just desolder them for the project?

eternal grove
#

I don't normally desolder headers, if you plan for a project that requires the headers not to be there, you may be better off using some other approach like a pogo pin clip.

fin-programming.jpg
subtle bane
#

I like having a dedicated breadboard one -- I've got a couple Picos with soldered headers on breadboards, and then when the project is ready to solder, I just solder it to a different Pico

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Particularly since the Pico is so cheap I can afford that

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But then the breadboard one just gets used to test bed and develop everything

hazy wave
lofty sinew
#

how do i round to the tenth place in c on the pico? i have a potentiometer connected, but i want the results to be consistent

dusty hedge
lofty sinew
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it's stored as a uint 16

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i want the outputs to be 3.3 or something, which in turn makes them more consistent

dusty hedge
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so uints can have decimals, they are integers (whole numbers)

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but to get less noisy uints, you can do quick and dirty things like "shift left 8, then shift right 8" to throw away the last 8 bits of precision in your number

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or bitwise AND the number with a mask - same effect

lofty sinew
#

this is the program: ```/**

  • Copyright (c) 2020 Raspberry Pi (Trading) Ltd.
  • SPDX-License-Identifier: BSD-3-Clause
    */

#include <stdio.h>
#include "pico/stdlib.h"
#include "hardware/gpio.h"
#include "hardware/adc.h"

int main() {
stdio_init_all();
printf("ADC Example, measuring GPIO26\n");

adc_init();

// Make sure GPIO is high-impedance, no pullups etc
adc_gpio_init(26);
// Select ADC input 0 (GPIO26)
adc_select_input(0);

while (1) {
    // 12-bit conversion, assume max value == ADC_VREF == 3.3 V
    const float conversion_factor = 3.3f / (1 << 12);
    uint16_t result = adc_read();
    printf("Raw value: 0x%03x, voltage: %f V\n", result, result * conversion_factor);
    sleep_ms(500);
}

}

#

it's multiplied by a float, but starts out as a uint

dusty hedge
#

ok, cool. and you don't want to just fix it for the printf right?

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because in the printf you can do %0.1f instead of %f and it'll round it for you (or some such)

lofty sinew
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essentially, i want to take the potentiometer and use it as an axis on a joystick. i can handle the conversion from the number to the axis

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i'll try the %0.1f thing

dusty hedge
#

that'll only fix the printout though

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it won't make the "result" more stable

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you can throw away some bits of precision if you want it more stable, like:
uint16_t result = adc_read() & 0xff00; - this throws away the 8 lowest bits

lofty sinew
#

i guess it might work

dusty hedge
#

it all depends on how you're going to use the data further (:

lofty sinew
#

i will be transferring the data again, so i guess since the first 2 digits are stable, it will work. thank you for all the help!

dusty hedge
#

no prob. good luck!

lofty sinew
dusty hedge
#

afaik math.h doesn't have a "round to nth place" - it has "round" which will remove all the decimals, but that's probably not what you want (:

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(I might be wrong)

lofty sinew
#

if i multiply and then divide, it can round to a decimal place. you are right, but there is a well-functioning workaround

dusty hedge
#

floating point divides are a little bit expensive (since the pico doesn't have floating point hardware). probably won't be a problem, but if things end up running a bit too slowly for you, just keep it in mind

lofty sinew
#

i'm just using it for a throttle for a game, and the pico is a pretty strong chip, so i doubt it will be a problem.

lofty sinew
#

one more thing, does anyone know of a good tutorial for tinyusb in c?

faint lintel
#

Why does my circuit for a shift register sometimes and sometimes not

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like I sometimes need to replug the latch or move the output wires and itll suddenly work for 1 loop

eternal grove
#

Sounds like a timing issue

faint lintel
#

how so?

eternal grove
#

Shift registers expect inputs to change between clock edges, if the clock edges and the inputs change together, they can do all sorts of weird things. Granted, I don't really know why your circuit sometimes works and sometimes not, there are a host of possible reasons, that's a fairly common one.

faint lintel
#

ok,,, I'll look into it tomortow

lofty sinew
#

when a digital pin is pulled low on the pico, is it connected to ground?

plucky goblet
#

On any computer.

lofty sinew
#

ok, thank you. i'm not too familiar with cpus

plucky goblet
#

Pulled high (1, True) is connected to V+/Vcc/Vdd, pulled low (0, False) is to V-/Ground.

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FYI, since I brought it up...

lofty sinew
#

does the pico have a "dissconected" state? i remember from a ben eater video that in tri-state logic gates, you can have positive, ground, and disconnected.

waxen aurora
lofty sinew
#

alright, thank you

waxen aurora
lofty sinew
#

alright, thank you. that last one was not for any project, more just out of curiosity

upbeat basalt
#

I got a hacked together device with a pi pico which does some logging from a sensor connected over UART and writes it to a file on the pico. If the power cuts the file is not closed properly, I lose the data and the pico becomes unresponsive when powered up again for a while.

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I was considering hooking up an ADC pin to positive power rail and put a capacitor in parallel on the rail, then connect the rail to the pico on VSYS

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If the voltage is cut, the capacitor provides power and the dropping voltage can tell the pico to close the file before the power level drops so low it dies

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But I am fairly new to all this and I am not sure if I can connect the power directly to a pin. I don't know how big the resistance is on the pin and whether I will fry the thing

storm heath
#

@upbeat basalt Have you tried just opening and closing the file for every write.

upbeat basalt
#

I guess I could! Although power might cut right in the middle of a write

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The device is a bit.. Funny

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It's the PMS5003 particulate sensor and you have to listen for a start byte which comes at some intervals. But I could wait for a full 32byte sequence to have passed, open, write, close..

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However, I'd still love to hear if my idea is viable, for any future projects or if I have overlooked something obviously flawed

gusty juniper
hollow tendon
#

If anyone could point me in the right direction, I would really appreciate it! Very new to this

chrome osprey
gusty juniper
#

Something like this has to have been done by someone on the internet, I don't think it's been done with native CP libs yet, but when there's a will, there's a way.

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I thnk this goes back to MicroPython, but whatever works haha

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Jk this is C-based, so setup might feel wonky if you're used to CP. Hopefully someone else has a Python lib somewhere on the web.

gusty juniper
frank quail
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you also need to rename the gamepad.py file and imports of it in the code, because it conflicts with the internal gamepad module that has nothing to do with hid gamepads and does not, indeed, contain the Gamepad class (and will be replaced with keypad)

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so:

  • you want to put the gamepad example at the bottom of the link above in boot.py (and then reset the board)
  • and then rename gamepad.py from the examples directory to hid_gamepad.py and change from gamepad import Gamepad to from hid_gamepad import Gamepad in the example code
hollow tendon
hollow tendon
hollow tendon
#

Thanks every one - some things to try out tomorrow 🙂

formal hamlet
#

hi guys has anyone run drone motor with pi pico ?

broken ibex
#

is anyone here good with the RP2040 connect from arduino

gusty juniper
#

@formal hamlet @broken ibex You'll probably get a better response if you just ask what's troubling you. I have tried neither of those, but I have helped several people with problems on devices I don't have nor use.

broken ibex
#

So im trying to connect the arduino to aws iot through mqtt but it doesnt work. The tutorials i have seen dont use wifinina and mqtt connections to connect to aws iot

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Wifi connection works fine. Mqtt doesnt

ancient forge
#

If I were to make a custom board with the RP2040 on it, what would I be able to use to program the chip?

gusty juniper
#

The RP2040 comes with the UF2 bootloader out of the box, which means if you place the part into bootloader mode, it will enumerate on your computer as a mass storage device.

small meteor
#

While the RP2040 has lots of onboard RAM (264KB), it does not have built-in FLASH memory. Instead, that is provided by the external QSPI flash chip. You will need to provide external FLASH memory using QSPI NOR memory.

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Inside the RP2040 is a 'permanent ROM' USB UF2 bootloader. What that means is when you want to program new firmware, you can hold down the BOOTSEL button while plugging it into USB (or pulling down the RUN/Reset pin to ground) and it will appear as a USB disk drive you can drag the firmware onto.

#

afaict the bare chips have that bootloader.

#

Says a clock crystal would be usual.

polar forge
#

has anyone tried using the feather rp2040 in usb host mode/is it possible?

eternal grove
#

You can certainly put them side by side, as well as end to end. However, I suspect your real question is if you can put them side by side at 0.1" spacing, and I think the answer is yes to that as well, but it would depend on the dimensions (a mechanical drawing would be really nice). I'm guessing those are made by 4ucon, but their site is tricky to navigate.

polar forge
#

so i would be able to put like 2x6 and 2x8 stackable headers on an feather rp2040 to completely fill the gpio you think?

eternal grove
#

Yes, I would expect that to fit and work, with the offerings from most manufacturers.

subtle bane
#

They might be a little tight of a squeeze, but a lot sandpaper on the side or using an X-Acto to shave some plastic off can make them go in perfectly

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Example here -- red and green are lined up perfectly, but putting the red next to white it's offset by a bit

PXL_20210716_160253058.jpg
#

But shaving a little off the end of each and presto, fit

red bay
#

I would say, wait for the new release.

polar forge
#

lets goooo

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i might pull from whatever branch thats on to get a bit of a head start ;)

hazy wave
#

If you know web ides for micro controllers like the pi pico please list them

subtle bane
#

Can the Pico interface with USB? I forget if it has host capabilities. If it does, you could use PoE and a USB Ethernet adapter -- have a PoE breakout between the Ethernet cable and adapter to power everything from

small meteor
#

I think it came up. See the scrollback on that.

small meteor
#

examples/host/cdc_msc_hid is the only one iirc.

red bay
polar forge
polar forge
subtle bane
#

I think anything the Pico can do, any RP2040 should be able to do, in general [assuming pins are exposed/not used by something else]

gentle marlin
#

Wrote my first pio program. It polls a keyboard matrix and updates the FIFO whenever the state changes. Wish I had caught a bug earlier. I wasn't calling pio_gpio_init

small meteor
#

hey guys,
can someone explain me what does this side here:

bitloop:
out pins, 1 side 0x0 [1]
in pins, 1 side 0x1
jmp x-- bitloop side 0x1

im trying to understand spi pio with C++ right now and usually just see "side 1" or "side 0".
i took the example code from pio spi.
thanks 🙂

eternal grove
#

0x0 is equivalent to 0, likewise for 1: the 0x prefix refers to a hexadecimal number. However, 0 and 1 are the same in decimal and hexadecimal (and in binary, for that matter), so it doesn't matter which prefix you use.

small meteor
#

@eternal grove ah okay.. thanks 🙂

zenith belfry
#

Hello! I'm Rik!
Dhalbert on github redirected me here.

I'm building a project on the raspberry pico with circuitpython, thanks everyone for your great effor, I'm really enjoying and appreciating circuitpython.
I've had a few occasions where I'd have a filesystem corruption. And it would wipe the whole pico.
Do you have any tips or good practises for preventing this in production?

distant spade
#

are you resetting the device often? how are you powering it?

zenith belfry
#

yes I'm still in development

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so its on USB when programming and then field testing etc

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In my boot.py I unmount the filesystem when a pin is grounded so the PICO can edit the filesystem

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What it does is save a few user variables to txt files using pythons write and read

distant spade
#

its possible we're not flushing those writes quickly enough

zenith belfry
#

What does that mean? 😄

wide musk
#

However, Port is grayed out

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I tried connecting the USB power supply multiple times with the switch pressed, but it is not going beyond this stage. Any suggestions?

zenith belfry
distant spade
#

that should help

zenith belfry
#

@distant spade Thx I'm gonna look into that

haughty lake
#

I'm poking at the macropad's RP2040; is there some way to manipulate it without a full IDE, in order to get an understanding of how the device functions at a low level? I've found the ttyACM0 and can connect to that with picocom, but I'm not finding any sort of drive or anything that would obviously allow for the modification of the code run on the chip

vivid pewter
#

there are totally tutorials on this (digging sounds ensue)

#

ponders what "QMK" is... Then asks Google.

haughty lake
#

Although all it covers there is use of the mu editor

vivid pewter
#

mu is pretty basic stuff, just a fancy file editor and serial terminal

haughty lake
#

I don't see any additional /dev/sd* devices with the board plugged in

vivid pewter
#

I've done circuit python disky stuff in Linux before without too much problem

haughty lake
#

So if I'm not seeing a drive for the rp2040, does that mean that mu wouldn't help in the first place?

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lsusb detects 2 interfaces for the device, a "communications->abtract (modem)" interface and a "CDC data" interface
I assume the latter's responsible for the ttyACM0 device?

vivid pewter
#

I should plug a pi2040 in someday and learn this stuff

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for the circuit playgrounds, gnome3 offers me an obvious way to use it

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hmm, was there a key to press to not go into the default keypad demo on startup?

haughty lake
#

i'm using a ramshackle combination of utilities and a window manager
But it's usually capable of detecting any usb drives I plug in and making them available to access via udev/udisks iirc

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Yeah, it detects other USB drives that I plug in

vivid pewter
#

absurdly long page anchor, but whatever

haughty lake
#

I'm not observing behavior from the reset button that would indicate reaching a safe mode - that particular LED doesn't light up in any pattern described there

vivid pewter
#

theres the option at the end of the page then, I guess

haughty lake
#

the uf2 being something used via uf2 tools?

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Or, arduino tooling, rather

vivid pewter
#

when you boot holding the rotary button down I think you go into uf2 mode

haughty lake
#

oh, THERE we go, that actually exposed a USB device

vivid pewter
#

top of the page i linked you

haughty lake
#

Shoot, did I miss something obvious

vivid pewter
#

uf2 mode is more for updating circuit python than any thing else AFAIK

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but its also where you can drop nukes if need be

haughty lake
#

Thank you for the help!

vivid pewter
#

no problem, I think its nice when people help, so I do that

small meteor
#

hey guys, i have a question. so i tried to make a program with pio using visual studio code. my board is adafruit feather rp2040.

everything went well with the compiler but when i put the .uf2, it didnt work/didt even load at the board.
i tried with other code and it works (other mean the normal code and pio code).

anyone had encounter the same problem before? or maybe someone know why the board didnt load my .uf2 code (just for this one)?

thanks 🙂

rapid stag
twin sage
#

Hello everyone!
Hope you could lend me you knowledge 🙂
I'm trying to make a gameController using PiPico -
Idea is, the latency using this controller should be minimal.
I'm trying to utilize "keypad" module in circuitpython 7.0.0
There is "interval" option available when using "keypad" -
my question is, do you think Pi Pico can handle polling rates like 500Hz or even 1kHz ?

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AFAIK, lots of USB HID peripherals go with 1000Hz polling - so I was wondering, if I could go with the same at my pico powered controller ..

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I just tried interval = 0.002, and ... well, it didn't blow up so I guess it's possible - but it's more a matter of consistancy (?) - I don't know if I should expect some unexpected behavior if I leave it at 500Hz?

On the other hand, I can immediately see a positive result of this

gusty juniper
#

1kHz polling shouldn't be an issue, IIRC the ADCs can sample 500000 samples per second on the 48MHz clock.

twin sage
#

with default interval, I could see that sometimes, inputs were registered in wrong order - I was flickering my fingers through 2 buttons - first button X and immediately after, button Y - I could occasionally see that button Y press was registered before button X

gusty juniper
#

At least from a hardware perspective, a Pi Pico should be able to handle pretty high poll rates. Whether or not CircuitPython can poll that fast is another question entirely.

twin sage
#

@gusty juniper Thanks

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ah... I didn't know CircuitPython might have something to do with this

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you mean, there might be some lower level mechanism that bottlenecks this polling?

gusty juniper
#

I do know that CircuitPython is optimized for simplicity, not speed. There are CP examples for HID gamepads from Adafruit, but I've never tested their performance myself.

twin sage
#

I understand - thanks for sharing your thoughts - I actually had pretty hard time finding anything for Gamepad and CP 7.0.0

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since the "gamepad" module was dropped in 7.0.0 ...

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(+ I'm a total newbie... ngl ^^ )

gusty juniper
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Oh right, that was a thing, wasn't it. You may have to define your own HID descriptor for gamepad now...

twin sage
#

yep, I've took a descriptor from some example -

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next step for me is to find out how to build a HID report I guess

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so my silly buttons can mean something to Windows

small meteor
distant anchor
gusty juniper
distant anchor
eternal grove
#

There are faster ADCs available to allow use of a resistive joystick at high speed.

gusty juniper
# distant anchor Ah very true / interesting! Would using a magnetometer based joystick be a way a...

Honestly, I'm fairly sure a Pi Pico can poll an analog stick fast enough to not have a noticeable difference to most, but if you're specifically targeting 1000Hz, I don't know how reliable it is. Most people outside of the top level of competitive gamers don't need less than 8ms response, since human response times typically max out at around 80ms anyways IIRC. Average reaction time was like 200ms?

craggy oriole
#

I have a question regarding creating a macro. What library would I go about using for creating a volume increment key, volume decrement key, media back, media forward, and pause buttons

#

Right now this is my code: ```# MACROPAD Hotkeys example: Microsoft Edge web browser for Windows

from adafruit_hid.keycode import Keycode # REQUIRED if using Keycode.* values
from adafruit_hid.consumer_control import ConsumerControl
from adafruit_hid.consumer_control_code import ConsumerControlCode

app = { # REQUIRED dict, must be named 'app'
'name' : 'Windows Media', # Application name
'macros' : [ # List of button macros...
# COLOR LABEL KEY SEQUENCE
# 1st row ----------
(0x004000, '< Back', [Keycode.ALT, Keycode.LEFT_ARROW]),
(0x004000, 'Fwd >', [Keycode.ALT, Keycode.RIGHT_ARROW]),
(0x400000, 'Vol +', [ConsumerControlCode.VOLUME_INCREMENT]), # Scroll up
# 2nd row ----------
(0x202000, '- Size', [Keycode.CONTROL, Keycode.KEYPAD_MINUS]),
(0x202000, 'Size +', [Keycode.CONTROL, Keycode.KEYPAD_PLUS]),
(0x400000, 'Vol -', ' '), # Scroll down
# 3rd row ----------
(0x000040, 'Reload', [Keycode.CONTROL, 'r']),
(0x000040, 'Home', [Keycode.ALT, Keycode.HOME]),
(0x000040, 'Private', [Keycode.CONTROL, 'N']),
# 4th row ----------
(0x000000, 'Ada', [Keycode.CONTROL, 'n', -Keycode.COMMAND,
'www.adafruit.com\n']), # Adafruit in new window
(0x800000, 'Digi', [Keycode.CONTROL, 'n', -Keycode.COMMAND,
'www.digikey.com\n']), # Digi-Key in new window
(0x101010, 'Hacks', [Keycode.CONTROL, 'n', -Keycode.COMMAND,
'www.hackaday.com\n']), # Hack-a-Day in new win
# Encoder button ---
(0x000000, '', [Keycode.CONTROL, 'w']) # Close tab
]
}

distant spade
#

is the consumer control code not working?

craggy oriole
#

nope

distant spade
#

hrm

craggy oriole
#

am I forgetting something?

distant spade
#

I'm not sure the library handles it

craggy oriole
#

but yeah when I click the vol+ it doesnt increment the volume up

distant spade
#

looks like the hotkeys code only supports keyboard, not consumer control

craggy oriole
#

hmm

#

is there any other way I could do volume up and down

exotic moth
#

Adds one more thing into the dictionary in the shortcuts file, and then checks for it to know what to run.

distant spade
#

@exotic moth that might be worth doing in the main hotkey code

exotic moth
#

So I don't know that I can very easily adapt it.

distant spade
#

that version looks good 🙂

exotic moth
#

It's quite different, is the thing.

#

Uses the GridLayout from DisplayIO_Layout instead of math.

#

Among other things.

#

Like I said, I struggled with his code.

distant spade
#

ya, its a different style from mine

exotic moth
#

Guide will have to be updated too, I imagine. I'll ping Dragon to make the suggestion.

craggy oriole
#

Yeah I wanna use the hotkeys for these other applications so I guess I gotta try to figure that out

#

unfortunately my keyboard has no volume binds which is why I partially got this lol

exotic moth
#

What I did should be adaptable to that example to preserve the rest of the feature set.

#

And then VOLUME_INCREMENT etc will work.

#

It uses two different concepts, so you have to include both of them is the issue. Consumer control codes are different than keycodes, and volume/mute/play etc are all CCC.

craggy oriole
#

ok so like

#

im kinda confused tbh lol

exotic moth
#

That's fair.

craggy oriole
#

i have never done anything with circuitpython before

exotic moth
#

Welcome! Heh

#

Have you written Python before?

craggy oriole
#

this is technically my first time using adafruit stuff (though I used some sensors with Particle IoT stuff)

exotic moth
#

Or new to that too?

craggy oriole
#

yeah ive used python before so im familiar with the syntax

exotic moth
#

Ok, good. Simply trying to get a feel for where you're at so I know how to explain.

craggy oriole
#

Im also just really dumb lol

exotic moth
#

I doubt that!

#

So in the shortcuts.py file I linked, do you see the Python dictionary?

craggy oriole
#

yeah

exotic moth
#

And how macros has four things in it instead of three (at least I think the Hotkeys code had 3)..

#

The KC and CC are different

#

As in that's what I added.

#

If you look at the different key sequences in the shortcuts.py file, you'll see some are Keycode and some are ConsumerControlCode.

#

Keycodes are basically the normal keys on your keyboard. a, b, c, 3, tab, escape, space, etc.

#

ConsumerControlCodes are the fancy buttons that send Volume or mute or play/pause. They're not really "key board keys", they're special, even on a commercially purchased keyboard.

#

Well, to send a keycode, you use one line of code in your program, and to send a ConsumerControlCode, you use something different. That's why your volume doesn't do anything right now, because the example you're using is designed only to send Keycodes, so it doesn't know what to do with a ConsumerControlCode.

craggy oriole
#

I see

exotic moth
#

I'm looking at the Hotkeys example now, trying to see how to explain adapting it.

#

Basically this section py for item in SEQUENCE: if isinstance(item, int): if item >= 0: MACROPAD.keyboard.press(item) else: MACROPAD.keyboard.release(item) else: MACROPAD.keyboard_layout.write(item)

#

Checks for the key sequence in the config file, and sends the Keycodes or strings (the keyboard_layout.write(item) sends a string)

#

But to send a CCC, you have to use macropad.consumer_control.send(macropad.ConsumerControlCode.VOLUME_INCREMENT).

#

There's no consumer_control instance in the Hotkeys example.

craggy oriole
#

so if I import that

#

could that work?

#

but its not that simple

exotic moth
#

Not quite. Because it's included in the MacroPad library, so you don't need to import it. The issue is checking for what you're trying to send. There's no obvious difference to CircuitPython between keycodes and consumercontrolcodes.

#

So I added an extra entry in the dict where I explicitly tell it KC or CC, for Keycode or ConsumerControl

#

And check for whether or not it's KC or CC, and then send the right code.

#

Let me ask you this, what are you actually trying to do? As in what kind of hotkeys are you trying to set up? How many? Do you need multiple pages of them?

#

Because it may actually be easier for you to adapt my code than the hotkeys code.

#

But maybe not.

#

Depending on what you need.

craggy oriole
#

I wanted one for photoshop, illustator (like the demo thing has), and then another page for general windows media keys

exotic moth
#

Ok, then stick with hotkeys for sure.

#

Let me think.

craggy oriole
#

oops

#

lmao

exotic moth
#

😄 Testing!

#

Give me a few minutes to try to get this working.

craggy oriole
#

I appreciate the help

exotic moth
#

@craggy oriole Ok, I only updated one of the macro sets, the first one.

#

See I added a fourth entry to the dict of "KC" or "CC".

#

And then in the code, I check for that, and then use the right thing to send that command.

#

You would need to add that fourth entry to every macro set.

craggy oriole
#

Ah I see

#

so if I just copy and paste this it should work?

exotic moth
#

If you download those files, and put them on your CIRCUITPY drive, with the mac-adobe-illustrator.py file inside a macros directory, it should work.

craggy oriole
#

sounds good. Thank you so much!

exotic moth
#

You're welcome!

craggy oriole
#

I really appreciate you taking the time to do that

exotic moth
#

Here's hoping it works for you too 😄

craggy oriole
#

yayyyy it works

#

now my question is

#

can I hold the button down and make the volume go up

#

gotta figure out how I can do that

exotic moth
#

The key press is debounced internally, I think. So I'm not sure how to make that work.

#

I would suggest moving to the #help-with-circuitpython channel though 🙂 More folks there to help with CircuitPython code.

craggy oriole
#

honestly its probably fine lol

exotic moth
#

You'll probably want to put that entry I made back to what it was, and then make your new Windows macro file based on that one.

#

As a side note.

craggy oriole
#

oh yeah I just copied the code part and then added it manually to my current macros

exotic moth
#

Nice ok

frank quail
#

does the Macropad hotkeys allow for a different action on key down and key up ?

exotic moth
#

The keypad library does, and it's wrapped into the MacroPad library, so you could do that yes.

#

I don't think the Hotkeys example uses that though.

craggy oriole
#

awesome. and now my skip buttons work too

exotic moth
frank quail
#

yeah it seems to be made for macros that are sent in one go

slender shadow
#

MacroPad RP2040 stops running when laptop returns from sleep mode.

I have been running the macropad hotkey example code and when my laptop is in sleep mode, if I press a key on the macropad or turn the encoder, I receive a message on the OLED that says "USBError: USB Busy Code done running." When I log back in to my laptop, the macropad stays in that state until I press the reset button. I am running CircuitPython 7 alpha 5 on Win10 and downloaded the hotkey project bundle. The original test program that came on the macropad worked fine when in sleep mode and I could press the keys and turn the encoder without the code stopping. BTW, if I don't touch the macropad keys or encoder while the laptop is in sleep mode, it continues to work when I log back in.

inland kiln
#

quick question i just flashed CP 6.3 on an adruino nano rp2040 connect. I thought it has 16mb of storage but when i tried to upload the lib folder i got errors so i checked and saw that there is only 1mb of storage any explanation for this?

#

ah just found out if i use 7.0a5 it’s fixed

#

😊

inland kiln
#

hm problem is only partially fixed it's show 15MB but had to reformat the whole partition to use up more than 1MB

stuck yoke
#

Hey all, is this the right channel to ask questions about the MacroPad that came in the Adabox 019?

#

I just opened it up today and assembled everything, and it seems like maybe I have a dead board?

subtle bane
#

Uhoh, what makes you think it's dead?

stuck yoke
#

Well, I've plugged it in using every cable I have in my house, and nothing indicates that power is getting to it

#

it doesn't show up as an attached device on either of the computers I've tried.

subtle bane
#

No lights whatsoever? Does your computer make a sound when you plug it in?

stuck yoke
#

nothing

#

no lights, no sounds... doesn't show up in the device manager in windows

subtle bane
#

Yeah, that sounds bad... I'd recommend stripping it down, see if you can see anything that looks damaged, and try plugging it into a computer again as a first step

stuck yoke
#

yeah, so I removed all of the parts, and attempted to plug it in just "naked" - no dice.

#

are there any points I can check with a multimeter to see if the board just isn't getting power?

subtle bane
#

Gimme a sec to look at mine

stuck yoke
#

(just confirmed the cool purple cable they sent works, so at least there's that 🙂 )

subtle bane
#

Ok, on the back of the rotary, there are 2 pins over on the side near the USB, you should get about 3V

stuck yoke
#

getting 2.80v there

subtle bane
#

Hmm

stuck yoke
#

are there any power indicators on the board? a lot of the adafruit boards have some sort of power indicator LED

subtle bane
#

I get 3.15V

#

The NeoPixel on the top left key should light up on boot

stuck yoke
#

no go on that

frank quail
#

if you think it's broken you can post on the Adafruit support forum https://forums.adafruit.com they will know what to do and enable a replacement if needed

subtle bane
#

Yeah, time for the forums. That sucks

stuck yoke
#

yeah, I think it must be. what a bummer.

#

...

#

I literally just pressed the reset button a dozen times in a row

#

like... a frustrated clicking like an insane person

#

and it came on

#

so... "did you try hitting it", has now been added back into my troubleshooting steps

frank quail
#

might be loose connection that jiggled

stuck yoke
#

I unplugged the cable, plugged it back in, and I'm back to "doesn't work"

#

if I hold the rotary encoder down, and then press the reset button, it appears and then disappears from the device manager.

#

I'm thinking something is borked with the connection there

subtle bane
#

Try wiggling the cable? It sounds like the USB port might have a bad connection

stuck yoke
#

oh I see, the boot button is under the rotary encoder, so that's what's happening there. It enters some boot mode

frank quail
#

yeah the rotaty encoder doubles as the boot button, to enter the UF2 bootloader

#

which should mount a drive called RPI-RP2

stuck yoke
#

yeah, that does happen

subtle bane
#

It should still come on without booting into the bootloader -- factory loaded image should light up the OLED, show rotary position and if it's pressed, show each key as pressed, and light up the NeoPixels

stuck yoke
#

I just threw the latest circuitpython on there, and it starts right up

#

screen says hello world, led flashing

#

I can unplug and replug the code, and it repeatedly works

#

maybe it's something in their code that's jacked up?

subtle bane
#

I suppose it could be a weird corruption thing? If CP loads, try wiggling around, make sure it doesn't turn off

stuck yoke
#

yep, no issues.

#

I'm going to try to upload the original firmware code they have on the site

#

if that works, then... who knows....

subtle bane
#

Weird...

stuck yoke
#

I feel like something similar happens every 3rd adabox 😛

subtle bane
#

lol

stuck yoke
#

ready for it to get even weirder?

subtle bane
#

Oh?

stuck yoke
#

I can get it to boot reliably

#

UNLESS

#

I have the bottom right key attached.

#

GP12

#

actually, that seems to be a red herring

#

This thing is weird. I wish it just plugged in and worked, but it is what it is I guess.

subtle bane
#

Maybe there's a short? I would still recommend posting on the forums about your experience

stuck yoke
#

I will definitely do that. I'm sure if I had better tools, I could troubleshoot exactly what was causing the weird behavior, but I really can't help but feel like sometimes it's just software related.

subtle bane
#

I would try nuking it, just in case there's something gunking up your flash

stuck yoke
#

understood. Taking it to the microwave right now.

#

what do you think? 3 minutes on high?

subtle bane
#

Lmao

stuck yoke
#

oh that's really handy

#

thanks!

subtle bane
#

No problem :D

fossil crystal
#

Hey im not sure if this is the place but ive been having alot of problems with the new box and MacroPad. I cant seem to find any base code layout besides the arduino file which doesnt work in my Mu editor. Ontop of that I cant even start to hook it up through the arduino loader because I dont have the 5 directories besides digikey.h? I tried looking them up but only found them on github. I tried copying and pasting the arduino code onto the code.h already in the Circuitpy window but now it just sayd IO syntax with the snake

#

I would prefer to use arduino because i dont have experience with python but whatever is easiest at this point would work. Does anyone have it up and running and wanna help me out a little?

#

Do i just need the pico setup program installed to allow coding through the Arduino IDE?

frank quail
fossil crystal
#

Oh I just realized there is an arduino section in there. Ive been tryna follow all the guides but there are so many, like throwing in the python file (i forgot what it was called specifically) to get the CircuitPy window but now I feel that I am pretty deep. So will it mess with tryna start new with the arduino code?

#

and just realized the directories are already there ugh sorry for the confusion

#

Is there a way to reset everything back to factory haha?

frank quail
#

I think that shouldn't be needed, usually your code simply overwrites what was there before. You can re-install the demo from here https://learn.adafruit.com/adafruit-macropad-rp2040/downloads (by dragging the demo UF2 to the RPI-RP2 drive you get when pressing reset while pressing the rotary encoder) and in case things are weird, there's a "nuke" UF2 that can be used to erase the flash https://learn.adafruit.com/getting-started-with-raspberry-pi-pico-circuitpython/circuitpython#flash-resetting-uf2-3083182-8

fossil crystal
#

Worked perfectly thank you so much

#

now just gotta get the libraries

#

I keep getting an error compiling for board

#

It should just be the macro pad RP2040 for the board correct?

#

I copied the ‘test code’ and dragged the whole file in the Rpi-Rp2 but it just sits there

iron pagoda
fossil crystal
iron pagoda
#

If you're using the circuit python examples - The learn page uses 7.x - make sure the macropad programs you're loading match that version if those are what you're using. If its the arduino stuff then I have no idea

frank quail
#

the bot is probably cutting some message due to too many symbols in it, but basically it's Adafruit_SH110X.h:27:10: fatal error: Adafruit_GrayOLED.h: No such file or directory

#

and Adafruit_GrayOLED is part of Adafruit-GFX-Library, look in the libraries if it's installed

fossil crystal
#

So then which do you think I should #include. Cause now it’s asking for an adafruit-I2Cdevice.h

#

Neither even comes up when I try to manually include the library through the sketch window

frank quail
#

ah step by step we'll make it, that one would be in Adafruit_BusIO

#

(I googled the file name, the github repository for Adafruit_BusIO came up)

fossil crystal
#

I know I’m sorry, this has been a struggle for some reason

frank quail
#

I'm surprised the libraries are not listed in the learn guide, or automatically installed as dependencies (though I don't think the Arduino IDE does that)

#

oh no it does

#

huh

fossil crystal
#

Yeah I’ve never had to work with so many random libraries that were never even hinted at 😂

frank quail
#

When asked to install any dependencies, choose Install all.

fossil crystal
#

That’s what i remember but it never even asked me that? Also I might just postpone till later cause now that I got the BusIO installed, it came up with over 10 new errors 😂 every time I install one it just brings back more problems. Can probably learn python and how to use it way quicker

frank quail
#

well, whatever you do, there are people who can probably help, maybe more people who read #help-with-arduino might know about your library issues

slate shell
#

Not totally sure where I would put this question, but I have a feather rp2040 running micropython. I would like to use the qwiic connector for I2C devices, but I can't seem to find any information on the associated sda/scl pin numbers for the qwiic connector. Am I missing something?

waxen aurora
slate shell
limpid urchin
#

Anyone worked with the Adafruit RP2040 and VSCode?

exotic moth
#

@limpid urchin Are you trying to use CircuitPython with it?

limpid urchin
#

Yes

exotic moth
# limpid urchin Yes

OK, please post in the #help-with-circuitpython channel. In the future, please avoid cross-posting the same question in different channels. I understand the trouble finding the right channel, but most folks here are community members who volunteer their time, so simply ask once and then be patient with folks. Thanks!

runic flame
#

I need help with the setting up of the macropad with Ableton Live Lite 11. I have it programmed just fine. I have the option to set the control item as Launchpad mini MK3, but I don't get an option to set the input device to MacroPad RP2040 (CircuitPython usb midi.ports[0]. How do I add this to the Ableton library?

fiery drift
#

Is this channel for the RP2040 PI PICO?

exotic moth
fiery drift
#

I am looking to log sensor data to an SD Card Module via SPI

exotic moth
#

Using CircuitPython or something else?

fiery drift
#

Micropython or CircuitPython in Micropython

exotic moth
#

@fiery drift I would suggest asking in the #help-with-circuitpython channel then. More folks hang out in that channel than this one, so you'll be more likely to find assistance there.

fiery drift
#

Ok, thank you!

red bay
#

Any ideas when the Qt Py RP2040 will be back in stock ?

#

(I'm hoping soon...)

hearty flicker
#

I am working oncircuitpyhton with rasberry pi pico can anyone know how can i faund rc522 rfid reader. I couldnt find anywhere.

#

I mean rc522 lib

red bay
terse lantern
#

I'm getting a problem on boot with my feather2040. I'm pretty sure it's flashing an error code at me with the onboard neopixel, but I cant find a blink code guide. Anyone know where I can find that?

small meteor
#

@terse lantern there's a circuitpython graphic for that

#

I am not aware of any other system you'd be using that flashes RGB patterns to indicate internal status.

terse lantern
#

cool thanks

small meteor
#

;)

terse lantern
#

I think I bridged something, and shorted this guy really bad.

20210807_151016.jpg
#

Probably not worth it to try to fix it.

iron pagoda
small meteor
#

kzzot

#

I just use a press fit

terse lantern
#

time to hit up microcenter again.

#

anyone know exactly what component that is? I'm currenlty looking for a labelled diagram

small meteor
#

press fit

this.jpg
#

three things: a target board, extra long header pins, and a substrate (perma-proto in this photograph)

#

Pliers. done deal.

#

tight as a drum; very positive contact.

#

The pronounced V shape is because the pins are one row apart, less, on the bottom. ;)

#

(watch out you don't puncture your thumb)

terse lantern
#

that's certainly a good solution. But at thispoint I already burnt it. I'm wondering what I would need to buy in order to replace it.

small meteor
#

In my country, we call that another one.

#

Electronics has always cost real money.

#

For non-native speakers:
"Electronics always costs real money" may be simpler to take in.

#

It's real tempting to try to use costed in the first one, but it's wrong.

waxen aurora
#

Gotta love irregular verbs...

fading path
#

can i use pull up instead of pull down for buttons on raspberry pi pico board...? Any pros and cons?

waxen aurora
#

Yep, you should be able to. I'm not aware of any major tradeoffs involved, though pullups are probably more common since they're often built into the GPIOs, whereas internal pulldowns are rarer.

fading path
#

I see...thanks..some circuit python examples used pull down..i am use to pullup..

terse lantern
#

can someone give me a sanity check?

To connect a feather rp2040 to a neopixel (a "jewel" in my case) do I simply pick a data pin to go to the Jewel's input, then do ground-ground connection and the....

now wait a second I'm blanking completely. for power should I connect that to "usb"?

subtle bane
#

I connected the power for my NeoPixel ring to the 3.3v

frank quail
#

powering with 3V will usually work

#
  • ideally you connect to 5V (USB) and level-shift the data pin to 5V
  • but many neopixels will work without the level-shifter
  • and if not, many neopixels work powered by 3V (they are just less bright)
#

(but still super bright)

terse lantern
#

Ok thanks guys. I'll do some experimenting tonight

#

OK, I'm also seeing a bunch of stuff that says "definitely attach a resistor!"

Is this needed for my setup, or only when I'm using a LI-PO battery?

exotic moth
#

I'm uncertain of its purpose, but I've not run into needing it yet.

subtle bane
#

LEDs need resistors, but NeoPixels have the right resistors built in so far as I understand

terse lantern
#

I think it's about making sure you don't burn something out when it pulls too much juice. So I imagine smaller stuff (like my 2-jewel thing) it's gonna be OK.

exotic moth
#

Bare LEDs definitely need them. NeoPixels, less so.

terse lantern
exotic moth
#

@terse lantern Yeah the guides have them. But I promise you your setup doesn't need it.

subtle bane
#

Hmm... Never noticed that... Never did that, lol

#

I assume it can't spike enough to damage on 3.3v

eternal grove
#

It's not a resistor in a power supply lead, it's in the data lead to absorb reflections that can impact signal integrity. They'll generally work fine without one, but in some situations, it can improve reliability.

keen belfry
#

Hello, I am here because I cannot wrap my head around this mess. hello, I have a custom RP2040 board with a windbond flash chip (W25Q16FW) I have included an ASM with modifications for it to work however I am still stuck in bootsel mode. If I upload a uf2, it will disconnect the mass storage and immediately reconnect it.

#

@distant spade I watched a couple of your videos on the subject of flash memory and I came here specifically to find you

shell badge
keen belfry
#

Yes

shell badge
#

I have a similar issue on my custom boards. I did notice that the SD1/SD2 pins were swapped on my design. I’m not sure if that could be the case for you, I haven’t verified this is my issue but I’m hoping to soon

keen belfry
#

Lemme verify the schematic

shell badge
#

It should look fairly smooth looking in terms of how the traces lay

keen belfry
#

QSPI_SD0 -> DI(ID0)
QSPI_SD1 -> WP#(IO2)
QSPI_SD2 -> DO (IO1)
QSPI_SD3 -> HOLD# (IO3)
QSPI_SCLK -> CLK

shell badge
#

My routing was weird because I had SD1/SD2 mixed up

#

But I’m hoping by fixing my traces that I’ll have success

keen belfry
#

looks like I did mess up

#

should be this:
QSPI_SD0 -> DI(ID0)
QSPI_SD1 -> DO (IO1)
QSPI_SD2 -> WP#(IO2)
QSPI_SD3 -> HOLD# (IO3)
QSPI_SCLK -> CLK

#

Thank you for pointing that out, I cant believe I messed up like that haha

shell badge
#

I couldn’t believe it either haha 😆 I’m glad my learning opportunity was able to help someone

distant spade
#

you should be able to test the rest by setting up the flash to use a single or dual mode

shell badge
distant spade
#

I think there is a basic stage2 that does it

shell badge
#

Is that within the circuitpython repo?

#

Or in the Pico sdk

distant spade
#

there is one in the sdk I think

shell badge
#

Okay

distant spade
#

it might be worth looking at the cp stage2 though since it is C, not assembly

#

if you haven't grokked the asm version

shell badge
#

I’ll have to check it out. I’m hoping my new revision comes out better

subtle bane
#

What pin is the Feather RP2040's NeoPixel? I don't see it on the pinout page

frank quail
subtle bane
#

I was looking at that exact image... Silly brain

keen belfry
#

I ordered new parts with corrected nets and traces

unknown.png
shell badge
#

Looks good

verbal swift
#

Do macropad questions go here? I'm wondering if it's possible to add a larger color TFT display to a macropad.

exotic moth
verbal swift
#

Thanks!

keen belfry
# shell badge Looks good

While I am waiting I was able to test that the RP2040 was otherwise functional by adding

pico_set_binary_type(blink no_flash)

#

in CMakeLists.txt for the blink example

#

you drag the uf2 just like normal, but the executable runs in SRAM instead of flash basically skipping the boot2 routine

#

And another with pwm_led_fade showing hardware modules and math is all good

shell badge
#

Nice!

keen belfry
#

yeah, so give it a try to make sure flash isn't the only problem on your board (probably only flash)

#

to be safe

shell badge
#

Was that on the Pico sdk?

keen belfry
#

yessir

#

It would take a lot of reconfiguring it get arduino to do PICO_NO_FLASH

shell badge
#

Cool, I’ll give it a wack later this morning

keen belfry
#

Let me know the results, and if you do find a problem, I'd be happy to look over your schematic

shell badge
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I have boards with the right flash config coming soon (by Monday) lol

keen belfry
#

Mine will be around friday next week and I really should have done this before ordering them but eh.

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I'm glad everything else in my design is ok

shell badge
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Same, it’s taken more iterations than I’m willing to admit to get to this point lol

keen belfry
#

Thankfully I ran into you, I may have ended up in several iterations myself otherwise

#

This white pcb is the first

shell badge
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White is a fun color

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I usually do afterdark from OshPark

keen belfry
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JLCPCB started offering assembly with white so I had to try it

shell badge
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I build my own boards

keen belfry
#

These are for a product, so I need mass production, I am upgrading from an ATMEGA328

shell badge
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Makes sense

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I did 180 boards once

keen belfry
#

afterdark sounds sweet, got a picture?

shell badge
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This is a breakout I make

keen belfry
#

wow that looks awesome

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Unfortunately I work full time and even shipping these things and R&D for upgrades takes up a bunch of my time

shell badge
keen belfry
#

So JLC or PCBWay are my best options

shell badge
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This is the board I expect Monday

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I build mine after work and the weekends

keen belfry
#

It uses a 1117 for converting 12-20V to 5V then a 3v3 LDO

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(it's for automotive application)

keen belfry
# shell badge

The board looks great, only suggestion I would make is additional vias on the RP2040 EP, I've heard from other designers that you can get some poor performance without at least 6

shell badge
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Ah cool

keen belfry
#

9 is what the pico uses, so that's what I used

shell badge
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Interesting

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I’ve not heard that, do you have a reference for those issues?

keen belfry
#

"The RP2040 layout guide recommends 9 vias on the middle ground pad to a ground plane to provide a good current path and assist with heat dissipation. Because of the crowding of the bottom side traces, I could only get 6 vias on the pad. I hope this compromise is good enough."

https://www.digikey.com/en/maker/projects/hardware-design-with-the-rp2040-part-2-pcb-layout/850cdf59974a4de3b749f94aa318c1f5

Hardware Design with the RP2040 Part 2: PCB Layout

How to lay out your own PCB for the Raspberry Pi RP2040

shell badge
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Ah for thermal

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Makes sense

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I’ll add more to the production run

eternal grove
#

I like the drawings TI provides for their chips

screenshot_1103.png
shell badge
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I usually put more, I’m not sure why I didn’t this time

small meteor
#

rp2040 seems like a nice chip, any idea how it compares with grand central m4 express and teensy 4.1 ?

#

also is it HID ?

shell badge
#

It has HID support

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RP2040 is a dual core M0 with lots of RAM and fast speeds thanks to being clocked at 133MHz. It’s capable but it has its limitations

#

For heavy process intensive loads, any M4/M4F or better board would be better

#

Teensy 4.1 has a cortex M7 clocked over 600MHz and has even been over clocked up to 1GHz 😅

small meteor
#

I'm mostly looking into making a r/f car or robotics with a lot of sensors preferably and 2-3MP cameras

shell badge
#

Teensy would be more than capable for that. I’m not sure how well the RP2040 would perform

#

Some people like @night wharf have used the samd21 in robotics but I imagine an M4 would provide much better capabilities and more GPIO

small meteor
#

I have an uno rev1 or 2 atm, a mega 2560 and a pi 2.0 and found them lacking for some projects so I want to be sure I have a controller above my needs for my next purchase, I like to minimize the amount of controllers I need to buy when possible as I would rather spend on really good chips

shell badge
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The biggest downside of the RP2040 in robotics is the lack of many analog pins

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It only has 4 analog capable pins which reduces its usability in heavy analog uses.

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Obviously you can get another off chip ADC but that can often be expensive

placid notch
#

Hello! I recently bought a feather rp2040 and would like to wire it with a 240x240 adafruit 1.3 TFT display. When reading the wiring instructions on adafruits website they say i should connect the Vin to 5V pin, but i can only find a 3.3V pin. (See 1. in the picture). Is the screen and this chip even compatible? Thanks in before! ps this is my first microcontroller 😀

feather_rp2040_with_240x240_disp.png
shell badge
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You should be able to just connect it to the VUSB pin on the feather. That will provide 5V power

shell badge
keen belfry
shell badge
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I usually do more, but i went back and there were a few rp2040 designs i did that didn't have enough lol

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one of them was super tight because it's small so i could only get 3

placid notch
#

Thanks for your answer!😀
So I should try soldering according to the following schedule?

123.png
shell badge
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if you have headers, you can solder headers on and then use dupont cables to connect them if you don't want it permanent

placid notch
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Absolutely👍 thank you very much for your input!

shell badge
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🙂

subtle bane
shell badge
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Yeah, that’s also a good consideration

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If you want to use 5V VUSB is the only option. But yeah, Doc is right

placid notch
#

Ohh i will be running the chip and disp on battery so i will try the bat pin. Thanks to both of you!🤩

subtle bane
#

:D

red bay
# keen belfry While I am waiting I was able to test that the RP2040 was otherwise functional b...

Are you having issues with booting your code from flash on a custom board ? You might want to take a look at pico-sdk pull requests that went into v1.2.0 and created a few configurables due to similar issues on other boards (i.e. SPI frequency and delay to wait for resonator to stabilize):
https://github.com/raspberrypi/pico-sdk/pull/457
https://github.com/raspberrypi/pico-sdk/pull/401

GitHub
Allow lengthening xosc startup delay with a compile option by dhalb...

This PR allows you to specify a multiplier, at compile time to lengthen the default XOSC startup time. The multiplier, PICO_XOSC_STARTUP_DELAY_MULTIPLIER, is 1 by default.
Motivation: On a few samp...

GitHub
Adafruit qtpy rp2040 target starts CDC/ACM USB only once - suspect ...

Changed:
PICO_FLASH_SPI_CLKDIV from 2 to 4
(to slow the clock, by halving it)

Reference system Linux host PC will not enumerate /dev/ttyACM0
(or related device names) except upon UF2 firmware uplo...

#

Also, while JLCPCB does some nice SMD assembly, it is far from perfect; you may need to do rework. My last batch was quite bad with a high rate of rework. One of my VSSOP-8 chips came clean off as I was reflowing one side with a soldering iron to improve contact... the other side simply wasn't soldered.

#

Makes me worry about QFN-56, but I'm going to try it once and see

red bay
# small meteor rp2040 seems like a nice chip, any idea how it compares with grand central m4 ex...

Interesting question. Power consumption is simliar to a Cortex M0+ (as used on Adafruit boards) running at ~20MHz under Arduino. But CPU power is several times that, and comparable to M4. Plus, there are two of them. However, large programs may bog down because they need to load from Flash to SRAM for execution (but will run faster within SRAM if they fit). PIOs are new, and amazing if you can figure out to use them (not always obvious).

#

GPIO output from CPU core(s) is several times faster than Arduino-type GPIO output on SAMDxx processors; a write of a literal signal value to a literal GPIO pin (ie. put a '1' on GPIO 3) is 8ns, which makes it a single-cycle output.

#

You can do things on RP2040 - especially with PIO - that can't be done on the others; for example, edge-trigggered IO is faster and easier, and some protocols can be encoded entirely in PIO.

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However, Cortex M7 is a CPU monster, so it really depends on what you need, and what your budgets are for power and cost.

shell badge
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Seems to mostly work. So I’m hoping with the fixes flash issue it should be Golden

small meteor
#

@shell badge I worked through the cmake mechanism when the pico-sdk first came out.

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Didn't seem intuitive to me.

shell badge
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The overall process on GitHub isn’t really up to date so I’ve had to do a piecemeal of resources to get things to work right

small meteor
#

That's out of date by a few months I'd guess. ;)

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I usually used branch develop on the pico-sdk

shell badge
#

Probably a good idea

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hmm, turns out the placement of the usb stdio enable line in cmakelist is important

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so i was able to successfully get it to show up as a USB com port. very nice.

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And it will print hello world over USB 🙂

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I made great progress today

small meteor
#

victory lap

eternal grove
subtle bane
#

lol

shell badge
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Oh whoops hahahahaha

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Fixed hahaha 😝

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I wrong programs all the time lol

subtle bane
#

Should've left it :P

shell badge
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Lol

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But now his comment makes no sense 🙂

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And it adds an additional layer to the comedy

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You see now I have write’d my wrong and the universe is back in balance

subtle bane
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Except the fact you threw his comment off balance :O

shell badge
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Like the eternals, I see all, obverse all, but I do not interfere.. until now

subtle bane
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Wait, that's illegal

shell badge
subtle bane
#

Oh, I saw someone mention a design guide for the RP2040 to make boards, can you link me to that?

shell badge
subtle bane
#

Danke

shell badge
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🙂

keen belfry
shell badge
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Hey @keen belfry thanks for the tip on the Pico sdk stuff yesterday

keen belfry
#

you're welcome, thanks for your help with the flash

shell badge
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I tried out a few different things to test out overall functionality of the board so I’m pretty happy with the results

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Having the usb cdc was a big relief

keen belfry
#

that's great news, I tested a bunch of stuff with PWM and frequency generation to make sure my choice of crystal was good

shell badge
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Makes sense. The board I was testing uses a lot of NEOPIXEL though I only had one soldered on for testing

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I was able to hack up the. Ws2812 pio example you work with sk6812

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They use mostly the same code

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I should have put a blinky LED to test as well but oh well

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I’m pretty excited because BREAD 2040 comes tomorrow and it has everything right so it should work great 🙂

keen belfry
#

you'll have to send me a picture of it assembled so I can see how it looks 🙂

shell badge
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Other than not as great thermal vias but yeah. Should be fine for initial prototype

keen belfry
#

I'm working on a personal project that I'll probably assemble myself and order those fancy black with clear mask boards

shell badge
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Yeah, it is really cool looking

#

I wish Osh park had it for 4 layer boards

keen belfry
#

the beauty of the rp2040 is 2 layers is all you need, the pad arrangement is fantastic on these badboys

shell badge
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Oh yes. I can make most anything on two layers these days

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With the exception of the ESP32-S2 bare chips

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4 layer is better for RF anyway

keen belfry
#

I just love the routing on this mcu

unknown.png
shell badge
#

It’s super nice

keen belfry
#

still have to finish up silkscreen stuff, but it's basically pico sized, with USB-C, a 9-axis I2C IMU, and a WS2812-2020. Also has up to 25V Vin

shell badge
#

Nice

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The Pico format is pretty nice

keen belfry
#

I'm a bigger fan of the Nano format because I've been using that family of MCUs forever, but that's just too small for me to do by hand. Even this has a hugely busy power area

#

The Nano connect is a 6 layer board I believe

shell badge
#

RPi’s use of 0201 passives makes their design much cleaner

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I couldn’t ever do that small without a pnp

keen belfry
#

yeah, I have mostly 0402 which is the smallest i'm comfortable with, I dont have a scope I'm just using a 5x mag glass

shell badge
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Same, I use an LED magnifying lamp

keen belfry
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yep same, nice led ring

shell badge
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I need to pick up a microscope one of these days

keen belfry
#

got it on an arm mount from amazon for like 25 usd

shell badge
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Like this? lol

keen belfry
#

not quite, it's on a spring arm with 3 elbows

shell badge
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Ah, close though lol

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Either way I need to get something better eventually

eternal grove
#

For that much Vin, I'd consider a switching regulator. And there seems to be room for more LEDs gus

shell badge
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Lol

keen belfry
#

I had considered a switching regulator, but dual LDO worked better giving me a 5V rail for the RGBLED as well as a 5V output regardless of whether a USB is hooked up. and lets me use a much smaller LDO for the 3v3 rail. It's also cheap allowing me to not use additional passives, just 4 caps instead of 3 caps, 1 inductor and 3 resistors for a switching reg that only outputs 3v3. I could build a more complex DC-DC converter but I didn't have any real concerns about spacing. As far as additional LEDs, I had considered a power LED but decided against it. Other than power, an RGBLED can really be adapted for any output when it comes to debugging

dense yacht
#

can anyone link me to an example which can help me read out the reading of a rotary encoder using pico

vivid pewter
#

it isn't like a potentiometer, it has to be tracked constantly and pretty much only has relative position, AFAIK

plucky goblet
# vivid pewter it isn't like a potentiometer, it has to be tracked constantly and pretty much o...

In terms of rotary encoders, there's the fancy ones like the Pimoroni RGB Encoder or the Adafruit I2C QT Rotary Encoder, both built on top of a microcontroller, so you connect via I2C and interact via a C/C++ or Python library.

Then there's the ones that are simply hardware, which provide an A and B pulses. You compare phase of the pulses to determine direction, and use the output to increment or decrement a value depending on direction.

vivid pewter
#

IIRC the RP2040 pinout showed two signal lines to the knob

#

oh, hey, channel relevant to next question, can PIO detect signal edges?

dense yacht
#

i got this code from a youtube video

unknown.png
#

but it not work

#

apparently its for circuit python and im using micropython

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and i dunno how to change it

#

well that was eas

unknown.png
cursive ibex
#

Has anyone driven apa102's with the rp2040, using the Arduino ide?

agile lichen
#

What does the QR code link to on the Pico? I can't scan the thing for my life 😆

shell badge
#

Companies usually use those internally

shell badge
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Yeah when I was looking at it just a few minutes ago, it was indeed a dot matrix code

agile lichen
#

I see. That sounds better. Thanks

shell badge
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I got a board back the other day that had them the right way and it worked marvelously

keen belfry
#

Awesome, mine are in transit and landed in the US today

shell badge
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I was very happy with the results 🙂

eternal grove
cursive ibex
#

Word! I'll give it a go! Thanks madbodger

thorny walrus
#

Hi, I'm Nihonzera, in Tokyo. Nice to meet you all. 🙇
I just started doing some experiments with Raspberry Pi Pico (super beginner). I wanted to test a 128×64 OLED LCD but all references I found on internet are with a display with 4 pins and my display has 7. I'm looking for some help, if possible. It's there any channel I could post and ask for some help?

subtle bane
eternal grove
thorny walrus
eternal grove
#

Ah, that is an SPI interface. Most of the 4-pin displays I see use an I2C interface, which is different.

frank quail
keen belfry
keen belfry
shell badge
#

Nice!

#

Super stoked for your project

keen belfry
#

Thanks, I ran into a new problem but that's normal stuff lol. Because I switched to a 3v3 mcu, I didn't take into account the current drop when using a single transistor for output, so I had to submit a new design with a darlington for one of the pins lol

#

always something haha

#

As far as my personal project, it's on hold until these products are ready

shell badge
#

Well, ya live and you learn some 🙂

#

Glad the data line changes at least allowed you to validate the RP2040 part of the design

ancient forge
#

Can the RP2040 be used as a USB host for, let's say, a keyboard?

shell badge
ancient forge
#

nonono, i mean, plug a keyboard into it

shell badge
#

Ohhh

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It has host ability but I can’t say how featured it is

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Or how much you can do with it in host mode

ancient forge
#

I've been trying to do some research into it and... no one seems to know anything, really

shell badge
subtle bane
#

MacroPad as emulated DOS computer?

ancient forge
#

Now I want to do that, even though that's... very much not what I was originally thinking

subtle bane
#

Lol

keen belfry
#

Take a look here

distant spade
#

USB host is only supported from the C sdk at this point

sage spoke
#

i just got the macropad and im completly new to all of this, how do i put code on to it, and how do i creat the code? i am fairly comfortable with python i just need to know how to put the code onto the device

small meteor
#

@sage spoke You hold down a button and power it on.

#

It mounts as a thumb drive like device in your operating system.

#

BOOTSEL is one name for the button.

#

adafruit has two buttons on some targets so you don't have to unplug it physically to get that mounted 'drive'.

sage spoke
#

how long do i have to hold it?

small meteor
#

Not long - press and hold and plug it in. Two mississippi at the very most I think.

#

I usually keep an eye on the location on screen where the drive will appear when mounted.

sage spoke
#

your on mac?

small meteor
#

To enter the bootloader, hold down the BOOT/BOOTSEL button (highlighted in red above), and while continuing to hold it (don't let go!), press and release the reset button (highlighted in blue above). Continue to hold the BOOT/BOOTSEL button until the RPI-RP2 drive appears!

#

from:

sage spoke
#

hah! i was doing wrong this whole time xD

small meteor
sage spoke
#

yeah yeah, i got it i was just holding it when it was plugged in

small meteor
#

Just drag and drop a UF2 onto that new thumb drive like device.

#

RPI-RP2

#

CIRCUITPY when it's got a circuitpython UF2 on it, iirc.

#

With Arduino, just a UF2 and same from there on as any arduino firmware on any target board.

#

(the mechanism to upload firmware for this chip is always drag and drop to a thumb drive like device called RPI-RP2.)

sage spoke
#

ok thanks so much!

small meteor
#

@sage spoke You're welcome.

sage spoke
#

heh, its there a template 😅

#

like is there a py file i can download that has pre-coded stuff, just like a simple key pad (1-9)

plucky goblet
#

Has anyone tried plugging in a LoRa or RFM69 radio device to an RP2040 based MacroPad? I'm just putting in an order for a MacroPad (Adafruit had 75 earlier and are down to 47 already so I need to act fast), and I'm considering making it into a (very slow data rate) radio control for a robot. The MacroPad has an I2C output but no SPI, and the radio boards are SPI interface, so it doesn't appear to be possible...

#

If not the MacroPad, anyone tried plugging in a LoRa or RFM69 into any RP2040? Like the Itsy Bitsy RP2040? It supports SPI.

small meteor
#

Looks like the pinout is via the keyswitch hole things.

sage spoke
plucky goblet
#

So I can get at the SPI bus by hacking access to the keyboard? I see that bright green SPI in the legend but I'm not seeing the familiar MOSI, MISO, etc. listed.

#

SPI seems to be used by the display, which makes sense.

small meteor
#

So there's GPIO1 thru GPIO12 direct to the keyboard contacts.

plucky goblet
small meteor
#

@plucky goblet Just look at the RP2040 chip's datasheet for that. Should be enough to guess from.

#

"Can I do SPI by some combination of the pins labeled GPIO1 thru GPIO12 on RP2040?"

plucky goblet
plucky goblet
small meteor
#

Yeah I think that could be an issue, sure.

#

So you would use TX/RX and talk to another chip.

#

Or i2c.

plucky goblet
#

So what I'm seeing is that I'd need another board in addition to the MacroPad in order to make a small radio control plus keypad device. Could be another RP2040 device or a microcontroller or a Pi, but not the MacroPad plus radio alone... hmm. Still doable but a bit more complicated as now I've got coms between three devices, not two.

#

So the MacroPad doesn't really buy me anything on its own, convenience-wise. I think I'd probably use a Pi400 for my radio "base unit" to talk to the robot then, since it's already got a full keyboard.

#

Adafruit obviously had to make some design choices with the MacroPad, and breaking out the I2C makes perfect sense, SPI less so since there's fewer SPI devices out there. But still a shame. I just submitted my order (for a MacroPad and a QT Py RP2040) so I'll see what I can use it for, maybe mount the MacroPad directly on the robot, dunno.

small meteor
#

Yeah the NeoTrellis M4 wasn't really big on I/O either.

#

I think once it has a keyboard and a display you're expected to like it just like that, standalone, as an engineered product ready to roll. ;)

plucky goblet
#

A lot of things are good for playing around but taking it to the next step of actually integrating it into a bigger project sometimes is very difficult...

sage spoke
#

i got some code on the macro pad but everytime i turn it on it just says
"soft reboot
Code done running."

#

what do i do

small meteor
#

Sounds CircuitPythonesque

shell badge
#

Is it possible for an RP2040 to run a 240x240 TFT display?

#

Particularly this one: https://m.aliexpress.com/item/32859374478.html?spm=a2g0n.detail.0.0.7b364b3buJH8CV&gps-id=platformRecommendH5&scm=1007.18499.187582.0&scm_id=1007.18499.187582.0&scm-url=1007.18499.187582.0&pvid=9678e3cf-5226-41ef-9f20-e4ba2b18f1e2&_t=gps-id%3AplatformRecommendH5%2Cscm-url%3A1007.18499.187582.0%2Cpvid%3A9678e3cf-5226-41ef-9f20-e4ba2b18f1e2%2Ctpp_buckets%3A668%230%23131923%2360_668%23888%233325%2319_8499%230%23187582%234_8499%234696%2321885%238_668%232846%238107%231934_668%235811%2327173%2315_668%236421%2330831%23932_668%232717%237559%2357__668%236808%2332771%23296_668%233374%2315176%23713&pdp_ext_f={"sceneId"%3A"8499"%2C"sku_id"%3A"10000000065748974"}&browser_id=12ad3b989bbe4915ae9e6404dd725809&aff_trace_key=17db3675ab344360b74b9bfb8e18ebb2-1616114662501-05265-UneMJZVf&aff_platform=msite&m_page_id=uuvfvelzyicawjqe17b664201ad10a37bb27205fb4&gclid=

#

Gosh that link is a wall

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Looks like Adafruit makes a breakout for it

eternal grove
#

Probably? It's a 3.3V SPI interface, which the RP2040 should support

shell badge
#

I am more concerned RAM wise but the Rp2040 has quite a bit of RAM

#

So maybe it should be fine

eternal grove
#

Good point.

#

I have a bad habit of confusing "can it do it at all" (like Atari 2600 style, computing the pixels on the fly instead of storing them in RAM) with "can it do it usefully"

shell badge
#

Lol I’m not terribly familiar with display RAM storage and whatnot lol

keen belfry
#

Well if you allocate 1 byte per pixel that’s only 58kb roughly

#

That’s nearly 200k left for programming

ebon lily
# shell badge I am more concerned RAM wise but the Rp2040 has quite a bit of RAM

you can use the adafruit one. https://www.adafruit.com/product/4484

i know it is 3x the price, but, the driver board has memory itself, which means that you don't have to worry about ram usage. it keeps whatever is being displayed as long as there's power to it.

source: i own one of those. fun lil display.

Adafruit Mini PiTFT 1.3" - 240x240 TFT Add-on for Raspberry Pi

If you're looking for the most compact li'l color display for a Raspberry Pi (most likely a Pi Zero) project, this might be just the thing you need!The Adafruit Mini PiTFT - ...

shell badge
#

The learn guide uses a metro mega so I assume that the Pico is more than capable

ebon lily
#

i mean, i dont know if it can drive the display directly

#

but there's a library for it

#

i think it may be possible to make it work

shell badge
ebon lily
#

i think this will be fine, yeah

faint jasper
#

Hi I am have a curious behavior with my macropad. I followed the basic tutorial (https://learn.adafruit.com/macropad-hotkeys), but whenever I start my 3d printing slicer software, Cura, it appears Cura keeps querying the usb connection with the g code "M105". The macro pad stops functioning and just streams "M105 across the OLED. Does anyone know of a way to prevent this either on the OS or RP2040 side?

exotic moth
#

@faint jasper You might get better answers in #help-with-circuitpython than this channel. This is more for RP2040-specific features. We discourage crossposting, but in this case, I think you're better off in the other channel. I know this is a known issue, but I don't know how to prevent it.

faint jasper
exotic moth
blissful hound
#

does anyone know of any issues with the RP2040 and pulseio.PulseIn? I'm using the RP2040 feather with an IR sensor and the values i'm getting are all over the place. Same circuit/code works as expected on M0 Express

keen belfry
#

Pretty sure I did this right for baremetal NV storage of 1 byte of config data. Anyone here to take a quick peak?

unknown.png
#

I have to temporarily disable interrupts to avoid any panics while writing to flash

#

"kbyte" is just typedef unsigned char kbyte;

#

#define FLASH_TARGET_OFFSET (256 * 1024) const uint8_t *flash_target_contents = (const uint8_t *) (XIP_BASE + FLASH_TARGET_OFFSET);

#

pages are 256 bytes, sectors are 4096 bytes in-case you wanted to know those defines

shell badge
distant spade
#

always try the latest pre-release too. lots of bugs have been fixed since stable

blissful hound
#

thank you! I'll give i shot

ebon vale
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Anyone have any clue why this RP2040 board will not flash 😦 I installed the boot following this guide https://learn.adafruit.com/adafruit-macropad-rp2040/circuitpython, but I couldn't control anything with the keys or knob. Right now, it isn't flashing with the correct data, but won't get out of drive mode. The num1 key is blinking green but on reboot, it is doing 4 yellow blinks into green blinks every 5 seconds

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Thats after the boot

frank quail
ebon vale
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Yes

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for the boot mode, BUT

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When I do that, the device does this

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Displays this and no ability do anything from there

frank quail
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yeah that's the bootloader RPI-RP2

ebon vale
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omg

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im dumb

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When you said that

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I figured it out

frank quail
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the circuitpy drive is the circuitpython drive, you put a code.py file in it and program like that, unless you want to use arduino

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RPI-RP2 is where you drop the UF2 files

ebon vale
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Yea, thank you

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Just that little tidbit pushed me in the right direction

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New to this device so II always struggle a bit off the bat

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All good, that’s why the community exists so everyone can be successful with their projects and devices 🙂

ebon vale
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Haha well thank you all so much, finally got it spun up. Now the fun part of spinning it up

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🙂 happy hacking

plucky goblet
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Ah, that subject petered out before I got my answer. I've got an Itsy Bitsy RP2040, boot-sel'd it to mount RPI-RP2, dropped the ItsyBitsy_RP2040.uf2 file onto it. It never rebooted, nor does unplugging and plugging it back in mount anything, nothing shows up in the logs. It's plainly a happy camper as the NeoPixel is rainbowing away, but I can't seem to access it. Any ideas?

(and also, the MicroPython link from the Itsy Bitsy docs is now broken).

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I'm trying to program it with MicroPython but I can't access it via rshell at all, nothing new shows up in /dev/tty*

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What ItsyBitsy rp2040 circuitpython version did you use?

plucky goblet
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I'm using the MicroPython uf2, downloaded from the Adafruit link.

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Ah okay

plucky goblet
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I had to really hunt around for that, as the other links to the MicroPython site seem to have gone stale.

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Hmm

plucky goblet
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I can plug a TinyPICO flashed with MP into the same workstation or Raspberry Pi and things work fine, so it's something with the board. It's flashing red on the LED and the rainbow is busy rainbowing.

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Try the 7 beta 0

plucky goblet
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But that's CircuitPython, not MicroPython.

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It’s just to test and make sure that UF2 will load properly

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You can build a uf2 for it off main on the MicroPython repo

plucky goblet
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Okay, I've tried both the 6.3.0 and 7.0.0-beta.0 versions and they do slightly different things, but basically both end up with a green flashing NeoPixel.

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Circuitpy drive?

plucky goblet
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So hardware seem okay I guess.

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A drive named 5021-0001 shows up on my desktop.

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Strange, should be circuitpy usb mass storage

plucky goblet
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But when I click on it I get an Input/output error.

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Might be an issue with the flash chip.. but hard to say for sure

plucky goblet
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Eew. When I actually navigate to the drive via terminal and do "ls" I get:

'¢'$'\030\002''ô'$'\001''#'$'\003''ô'               ''$'\003''╤'$'\v''I'$'\v''H■≈.U°'$'\001'
'°≈'$'\021''°'$'\b''$'$'\005''.'$'\001'\'''         'ï░'$'\021''K'$'\006''¡'$'\004''1.'$'\001''8'
'£a'$'\005''hd'                                     ''$'\022''k"hüb'$'\001''╤.3'$'\037''√'
'%.¥B'$'\017'                                       ''$'\033''k[h.ÿg'$'\006'
'0.▀■'$'\006'                                       ''$'\021''≡≥ⁿ'
''$'\006'' '$'\v''░0╜└F.pq'$'\003'                  'ñ'$'\032''.≈╜└'
'0h≤≈Θ²'$'\001'                                     'ñFI▓v▓£D.cE'$'\001'
''$'\001''0⌡τ¬p'$'\003\020''.≡╡ç'                   ''$'\025''ⁿ'$'\001''#╨"ú@.'$'\022\006''ô'
  ≈╪■.≡╜1                                           ''$'\001''ö'$'\004''¢öb'$'\002''╨.'$'\005''H²'
 1                                                  '█▓.ÖB'$'\v'
'½BΦ▌*.'$'\006''¢ß'                                 'öFzh.'$'\002''#"'
''$'\001''¿≡≈?√.2'                                  ''$'\f''≡ö·α`(i'
'≤≈*²'$'\002''.('                                   ' ≈'$'\004'' '$'\004''p'$'\020''╜.'$'\020''╡'$'\024'
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Something weird going on.

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O_O

plucky goblet
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It's brand new, just cut it out of the plastic bag an hour ago.

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That looks like a corrupted flash.

plucky goblet
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I've got another on a robot that's fine.

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Yeah, I might have to contact Adafruit tech support.

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Do you know where the flash erase uf2 is?

plucky goblet
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No

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Small pads on the bottom I'm guessing

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It’s a file you can use to wipe the flash storage

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I’m trying to hunt it down lol

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Do you see a usb cdc com port?

plucky goblet
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I just repeated that exercise just to confirm and it's the same every time.

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You mean under /dev?

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Yeah like /Dev/tty.usbsomething

plucky goblet
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No, nothing new shows up.

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Hmm

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Linux if Mac?

plucky goblet
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And with the TinyPICO yes, it does.

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Or*

plucky goblet
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Linux workstation, also tried a Pi.

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Okay

plucky goblet
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I think you're right, bad flash makes sense.

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Try building the nuke example and drag that uf2 over

plucky goblet
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Okay, thanks. I'll also keep that bookmarked, would never find it otherwise.

ebon vale
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Can I ask another question? haha its in regards to a new macro not showing up on the device itself

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ebon vale
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These two macro .py files are not showing on the rp2040 now

unknown.png
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Is that from the learn guide?

ebon vale
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the majority is, I copied the win illustrator just to test with a discord .py file

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Gotcha, what’s the specific error it’s giving you?

ebon vale
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Just nothing

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No import error?

ebon vale
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when I try to scroll to it, the others are showing, nothing else is

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Hmmm

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Okay, this might be more of a circuitpython problem than rp2040 specifically

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Can you post in #help-with-circuitpython with what you’ve done so far and any kind of errors or description of what happens when you try to import those files

ebon vale
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No worries, Ill hop up to there 🙂

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thank you!

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🙂

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plucky goblet
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Just ran cmake nuke and something mysterious happened that I'm still trying to figure out...

# 
      ► cmake flash/nuke 
CMake Warning (dev) in CMakeLists.txt:
  No project() command is present.  The top-level CMakeLists.txt file must
  contain a literal, direct call to the project() command.  Add a line of
  code such as

    project(ProjectName)

  near the top of the file, but after cmake_minimum_required().
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etc.

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It was a trick to get it to work

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Let me try and make it for you

plucky goblet
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Thanks. I'm guessing you can't build it from the nuke directory or its parent, must be done from project root.

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should be able to build it from flash

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ah wait i found it built

plucky goblet
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Not sure what you mean: "from flash"?

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bottom of the page

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flash_nuke.uf2

plucky goblet
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Ah, another bookmark!

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Okay, took a bit. I nuked it, tried flashing it with the ItsyBitsy-RP2040.uf2, that didn't work. I nuked it again and flashed it with CircuitPython 6.3.0, and now I have a CIRCUITPY drive on my desktop. I see a /dev/ttyACM0 device show up.

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good good

plucky goblet
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So hardware is okay at least.

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can you get to the repl?

plucky goblet
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Not sure why I couldn't flash MicroPython though.

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Using what? minicom?

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minicom or screen

plucky goblet
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Will need to install minicom... hold on...

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screen should be built in

plucky goblet
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I'm using this on a Linux workstation but I can plug it into a Pi instead.

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screen /dev/ttyACM0

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i suppose it depends on which linux distro you're using

plucky goblet
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Ubuntu 21.04 and it's not there, but I've got a Pi handy.

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Hmm. Thought a Pi would have screen already but no, will install...

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I'm in the REPL now.

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Okay so that’s a good sign

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Put the device in boot mode and try putting the MicroPython uf2 on it

plucky goblet
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Well, that's interesting. I was able to enter the REPL and clearly in CircuitPython things are fine. But if I try flashing the MicroPython uf2 it goes back to red flashing and rainbows, and no /dev/tty* mount.

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Huh

plucky goblet
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yeah.

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What if you use the nuke and then MicroPython?

plucky goblet
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That's what I did before but will try again.

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Bootsel pops up RPI-RP2 with /INDEX.HTM and /INFO_UF2.TXT. Now will nuke...

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Okay, so I've nuked twice, will now try RP.

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Same, red flashing LED and rainbows. Doesn't work.

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Strange…

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Maybe file an issue on MicroPython

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Since it works on circuitpython it should in theory work on MicroPython

plucky goblet
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I've tried v15 and then v14 and I'm currently in minicom on v14.

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Just to confirm I'll try v16 again.

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Okay: nuke then flash with ItsyBitsy uf2 consistently fails.

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Nuke then install v16 of the pico uf2 doesn't fail, and I can enter via minicom

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So the standard Pico UF2 (v16, v15 and v14) works for the ItsyBitsy RP2040 but not the current Itsy Bitsy UF2.

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I'm able to turn on the LED on pin 11 using the rp2-pico-20210618-v1.16.uf2.

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But if I flash it with ItsyBitsy_RP2040.uf2 I get red flashing LED and rainbows.

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...and nothing shows up in /dev/tty*

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So I guess I need to hunt for a different ItsyBitsy UF2 file.

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I find all this rather strange because I've got an older Itsy Bitsy RP2040 on a robot and it's working just fine.

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I wonder if something has changed in the production run, if the current download of the UF2 has changed (the filename is not versioned), or if this is a dud device. I think we've determined that it's not since it's able to load CircuitPython, or the rp2-pico-20210618-v1.16.uf2, just not ItsyBitsy_RP2040.uf2. So that suggests the latest download of the UF2 is awry.

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Very possible for that to be the case

brave quiver
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how do i change the led color after my code is run

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currently it fades green in and out after code is done

frank quail