Change REPL UART baud rate

[hacksterous]

Hi,

I plan to send the MicroPython REPL UART Tx data to an FPGA that drives a VGA display, and this FPGA is only capable of 19200 baud at the moment.. I can tweak the Verilog code there, but before I do that I would like to know where to tweak the MicroPython source code to get the REPL baud rate to 19200 (or any other value) -- and recompile it.

I have tried changing the file ports/esp8266/machine_uart.c line 205 to:

self->baudrate = 19200; //115200; //FIXME: changed 115200 to 19200

but it didn't seem to help.

Thanks for suggestions.

[robert-hh]

The easiest way to do that is changing/adding the following lines in boot.py:

import os, machine 
os.dupterm(machine.UART(0, 19200), 1) 

That will change the REPL to 19200 baud, but will not change the boot messages created by the ROM firmware sent at 74880 baud.