MicroPython Forum

You can use the UART.any() method to determine how many characters can be read without blocking:
http://docs.micropython.org/en/latest/l ... e.UART.any

Which board are you using? The pyb module exists on the stm32 port, and doesn't exist on the ESP32 and ESP8266 ports.

The general preference is to use the machine module where possible.

It looks like you need to enable some features?

You'll probably get better support by asking in the openmv forum: https://forums.openmv.io/

I've also recently been looking into flat buffers which offer some advantages over protocol buffers.
https://google.github.io/flatbuffers/

Admittedly, I've been using flatbuffers in rust, and not in python, but I wouldn't really expect the programming language to make too much difference.

The pyb.LED module supports upto 4 LEDs. You need to configure them in your boards mpconfigboard.h file. For example, the PYBV11 board does this: https://github.com/micropython/micropython/blob/88cbfd791a06a405b05a9262e6d7ab6fb73ade57/ports/stm32/boards/PYBV11/mpconfigboard.h#L81-L89 The switch modu...

On most 32-bit architectures (and definitely on the ARM), retrieving or storing a 32-bit value is an atomic operation. You'll never get 3 bytes from one time and an additional byte from an interrupt handler. You still have the potential problem that the main loop may have just retrieved the value an...

I tried your code and it wrote 833 lines, none with a value less than 1400. I had to add an import pyb to the top since it doesn't work without it. I was running on a PYBV10.

You should be able to use st-flash to program the NUCLEO-F401RE. The Makefile has a deploy-stlink rule which will do the appropriate flashing steps: This assumes that you have the stlink tools installed and setup.

I'm not sure that any changes need to be made to upy-rtttl to support asyncio. The library was designed as a generator which returns a tuples. Each tuple contains the note to play and how long to play it for. Each time you call the generator it returns the next tuple. upy-rtttl doesn't have any inte...

I've not heard of having to program option bytes.