Using higher baud rates (921600) successfully?

[Hyperion]

Anyone tried using higher baudrates for the UART, successfully? I would like to approach at least 1Mb/s transfer rate so I compiled the firmware with

Code: Select all

CONFIG_ESP_CONSOLE_UART_BAUDRATE=921600

and initialized the baud rate with the same number but it seems that the REPL is unusable when I go any higher than 230400. I don't even need to use the REPL, I have my own simple command-based communication protocol that I use.

I'm on the ESP32.

[jimmo]

How are you accessing this UART (to access the REPL)?

i.e. is it a self-contained board with a USB/UART adaptor, or are there breadboard wires or long cables carrying the UART signal?

Does the USB/UART adaptor support the higher baud rate?

[pythoncoder]

@Hyperion If you're not using SPIRAM you could use UART2 on pins 16 and 17. This would avoid any complications with REPL or USB.