idf.py baud is not working (IDFGH-6686)

[chegewara]

I am trying to change monitor baudrate but it is not working either with -b nor with --baud:

• esptool.py v3.3-dev
• OS: ubuntu 20.04

idf.py -b 9600 -p /dev/ttyUSB0 monitor
Executing action: monitor
Running idf_monitor in directory /home/chegewara/upwork/craig_atkins/project
Executing "/home/chegewara/.espressif/python_env/idf5.0_py3.8_env/bin/python /home/chegewara/esp/master/tools/idf_monitor.py -p /dev/ttyUSB0 -b 115200 --toolchain-prefix xtensa-esp32-elf- --target esp32 --revision 0 /home/chegewara/upwork/craig_atkins/project/build/simple_injection.elf -m '/home/chegewara/.espressif/python_env/idf5.0_py3.8_env/bin/python' '/home/chegewara/esp/master/tools/idf.py' '-b' '9600' '-p' '/dev/ttyUSB0'"...
--- idf_monitor on /dev/ttyUSB0 115200 ---
--- Quit: Ctrl+] | Menu: Ctrl+T | Help: Ctrl+T followed by Ctrl+H ---
ets Jul 29 2019 12:21:46

rst:0x1 (POWERON_RESET),boot:0x3 (DOWNLOAD_BOOT(UART0/UART1/SDIO_REI_REO_V2))
waiting for download

Looks like it is overridden by monitor command.

Thanks

[nopnop2002]

-b is Baud rate for flashing.

https://esp32.com/viewtopic.php?t=2930

[chegewara]

It is not for flashing, or it is not working, because flashing speed is exactly the same with -b 9600 and without it.
Im pretty sure i would see the difference with flashing speed 9600.

[nopnop2002]

Change here to change monitor baudrate.

[chegewara]

Thanks, but that does not change the fact -b option is not working, no matter what it suppose to do, and UART baudrate i can control from code, its what i do.

EDIT actually i tested one more time and you are correct, it controls flashing speed and with 9600 i cant even connect to flash

[dobairoland]

@chegewara idf.py monitor -B <baud> also work. BTW idf.py -b <baud> monitor should as well but it is not at the moment. We will patch this. But it is a breaking change so it will be available only in v5.0 and later versions.