REPL over UART only

[hugolundin]

I want to use the USB serial device for sending raw bytes with pyserial only, and not have the REPL there. I tried setting MICROPY_HW_ENABLE_UART_REPL to (1) in mpconfigport.h, but the REPL is still available over USB serial.

Can this by done, either in boot.py (dupterm?) or via mpconfigport.h? Thank you!

[msawicki-poland]

Look at my attempt and solution, I build Micropython: https://forums.raspberrypi.com/viewtopic.php?p=2299420

[rkompass]

This is an old discussion topic. After some search I think you would need something like:

import os
from machine import UART

uart1 = machine.UART(1, 115200)

os.dupterm(None, 1)             # detach old stream (USB) from REPL
os.dupterm(uart1, 1)             # attach uart1 to REPL

see: here for example and dupterm docs and here.