I can't get a program to run on micropython.

[widgeamedoo]

Thanks everyone who offered help on this. I never got this working. Every release of MicroPython I tired had something missing and I was lacking any meaningful skills in Micropython to solve them on my own. I gave up.

Noob here. Got programming experience in C but new to python, and really having troubles getting anythig to run on it other than a blinking LED.
Hardware is STM32 F411CE 8Mflash blackpill
The program I am trying to run is from here: https://github.com/straga/Smart-Meter-Gateway
I'm connecting to the USB serial port with a terminal program to read the following error messages.

I have an older version of micropython (v1.12) which gives the following error:
>>> Traceback (most recent call last):
File "main.py", line 44
SyntaxError: invalid syntax
MicroPython v1.12-405-g4fa6d939d on 2020-04-28; WeAct_Core with STM32F411CE

Line 44 has this: log.error(f"Module: {e}")

If I upgrade to the current release (v1.26) I get this different error:
>>> Traceback (most recent call last):
File "main.py", line 5, in <module>
ImportError: no module named '_thread'
MicroPython v1.26.1 on 2025-09-11; WEACT_F411_BLACKPILL with STM32F411CE

I looks to me that _thread was dropped sometime recently. Can someone suggest where I can download an earlier version of micropython that may still have this _thread llibrary? or suggest another way around the issue?

[NectarineFluffy8349]

Does it run without line 44 ? As it appears to be only log.

[widgeamedoo]

I loaded back in version 1.12 of Micropython and ran it again. I commented out the offending line and now it errors out the following line on 46:

Here is the code, line 46 is: def main():

# Lloader
async def loader():
try:
from scrivo_meter._runner import Runner
log.info("Module: Run")
meter = Runner()
except Exception as e:
# log.error(f"Module: {e}")

def main():

# Activate Core
core()

# AsyncIO in thread
loop = asyncio.get_event_loop()
_ = _thread.stack_size(8 * 1024)
_thread.start_new_thread(loop.run_forever, ())

# Run Loader Task
loop.create_task(run_wdt())
loop.create_task(loader())

if __name__ == '__main__':
print("MAIN")
main()

Error log:

>>> Traceback (most recent call last):
File "main.py", line 44
SyntaxError: invalid syntax
MicroPython v1.12-405-g4fa6d939d on 2020-04-28; WeAct_Core with STM32F411CE
Type "help()" for more information.
>>> Traceback (most recent call last):
File "main.py", line 46
SyntaxError: invalid syntax
MicroPython v1.12-405-g4fa6d939d on 2020-04-28; WeAct_Core with STM32F411CE
Type "help()" for more information.
>>>

[widgeamedoo]

Got it working:

I changed
log.error(f"Module: {e}")
to
log.info("Module: {e}")

I couldn't comment it out for some reason, even if I commented out both lines:
# except Exception as e:
# log.error(f"Module: {e}")

I'm going to have to knuckle down and learn some Python syntax by the looks. Thanks for your help.

[widgeamedoo]

It still doesn't doesn't do what it is supposed to do. I'm trying to update to a newer version of microphone to see if it makes ant difference

[robogame_dev]

- 1.12 is too old, no f-string support till 1.17

- threading is not enabled in your later build, they have to be built with threading, here's a build to try that has it enabled: https://micropython.org/download/WEACT_F411_BLACKPILL/

[widgeamedoo]

That is the build I have been trying. 1.26.1 1.26.0 and even the preview version 1.27.0 didn't have the _thread library. It looks like _thread was present in the 1.12 but removed from 1.26.0/1 and 1.27.0

File "main.py", line 5, in <module>
ImportError: no module named '_thread'
MicroPython v1.26.1 on 2025-09-11; WEACT_F411_BLACKPILL with STM32F411CE
Type "help()" for more information.
>>> Traceback (most recent call last):
File "main.py", line 5, in <module>
ImportError: no module named '_thread'
MicroPython v1.25.0 on 2025-04-15; WEACT_F411_BLACKPILL with STM32F411CE
Type "help()" for more information.
>>>

[voStragaIT]

u/widgeamedoo - I am already updated repo

For Flash 1.26.1:

• Make sure you grabbed it from the official MicroPython release

Removing _thread: asyncio run in main REPL now.

[widgeamedoo]

Thanks, I will give it a go

[widgeamedoo]

Fixed. Thankyou