MicroPython Forum (Archive)

hippy wrote: ↑

Wed Jun 22, 2022 4:01 pm

There have been issues with threading on the MicroPython RP2 port but I believe those should have been fixed in recent builds. Make sure you have a recent build - 1.19 arrived after the threading fix so that should include it.

Thank you for the reply, unfortunately using 1.19 already...

I'm loosing confidence in MicroPython being a good choice for my project. Struggling all along the road with unpredictable execution stops. Short description of the project (see my other posts): using RP2 and MicroPython with a Waveshare modem on hardware uart. 1) stdio over usb stops when having a ...

Hi Peter, the question was to have two virtual (CDC) serial ports on one USB connection, don't see how you can do that using PIO

pythoncoder wrote: ↑

Wed Jun 15, 2022 9:45 am

What about the examples using the PIO to implement a UART? See this link.

That's an option indeed if you don't need the rest of the features you get using MicroPython

electronut wrote: ↑

Wed Jun 15, 2022 2:45 am

Thanks, Filip. I might as well as drop to C for implementing this. I found that TinyUSB has a dual CDC port example:

https://github.com/hathach/tinyusb/tree ... dual_ports

Hi Robert! Thank you very much for trying this out. I'm wondering: A) What data sequences and what responseList you did the testing with? B) Is data coming at regular intervals or e.g. first a bit, then a pause and then the rest, containing the response you are looking for? Would you be able to test...

Hi Peter Thank you, feeling a bit stupid. I did put the second thread in a separate module, that's why it wasn't working with a global variable. I didn't need global variable, I just needed to reference the modules namespace! :oops: Try this: import _thread from time import sleep_ms running = True c...

I have a project using an RPi PICO that uses the hardware UART to connect to a modem. I need to communicate a lot using the uart, e.g. during the setup phase. In order to be able to follow this setup, I'm printing to the terminal (standard REPL over CDC-USB UART) and I also keep a log in a file. I s...

This is a peculiar use of a lock, whose purpose is normally to control access to a shared resource. While I can't see why your code isn't working, I suggest you replace the lock with a simple shared global boolean, say stop_thread . The two threads can share variables, although care needs to be tak...

Just upgraded to v1.19. Seems to work better.
I'll keep you posted!

Still wondering (see above) if putting sleep statements is the way-to-go...?

I think I might have found the solution for the stopping of the printing of the REPL in combination with constant uart usage. I introduced on different locations in my code sleep_ms calls, what seels to give time to the REPL to process the printing. Is this the way-to-go or are there better ways to ...