asyncio CircuitPython support for RP2040 or Metro M7?

[dcuccia]

Hi,

I'm struggling to get some sample code working with asyncio in CircuitPython for either my QT Py RP2040 or Metro M7. I've tried CP 7.3.3 and 8.1.0. My hope is to establish robust serial data communication with an outside device over UART or Serial.

After adding the asyncio library to the board, the call

Code: Select all

import asyncio

will crash with the following message:

code.py output:
Traceback (most recent call last):
File "code.py", line 1, in <module>
File "asyncio/__init__.py", line 14, in <module>
File "asyncio/core.py", line 18, in <module>
ImportError: no module named 'adafruit_ticks'

If I look at the requirements folder, the library adafruit_ticks seems to depend on Blinka. But I'm trying to run on-device with CircuitPython, and I am confused. Do I need to install Blinka on the micro? (Thought that was for the PC.) The closest thing I can find for help so far is this tutorial on how to run CircuitPython libraries on MicroPython.

This tutorial seems to imply that asyncio should work out of the box on CircuitPython. What am I doing wrong or incompletely?

Thanks!
David

[danhalbert]

Just copy the adafruit_ticks library to the lib directory in addition. You can get it from the library bundle. If you use circup (https://learn.adafruit.com/keep-your-ci ... ith-circup), it should install adafruit_ticks automatically as a prerequisite when you install asyncio.

See https://learn.adafruit.com/cooperative- ... ry-3106577, which mentions the adafruit_ticks prerequisite.

requirements.txt includes requirements for running under blinka. You can ignore the blinka requirement, but the other requirements are needed.

[dcuccia]

If you use circup...it should install adafruit_ticks automatically as a prerequisite when you install asyncio.
requirements.txt includes requirements for running under blinka.

This worked, thank you! My .zip may have not fully extracted, because I'd had trouble finding adafruit_ticks.mpy. circup is fantastic - it's great to see productivity tools like package management come to CircuitPython!

You can ignore the blinka requirement, but the other requirements are needed.

Ah I see - this was tripping me up.

All set, thanks again!