Read-only mode when monitoring?

[hongquan]

I'm using espflash v2.1.0 and I found that when I do espflash monitor, it acquires exclusive access on the serial port. I want to use ESP32's UART0 to read command from PC, it means that I want the serial port to be writable for other program. Could you add one mode to espflash monitor so that it only need read access on the port?

[SergioGasquez]

Hi! Have you tried something like https://github.com/esp-rs/esp-hal/blob/main/esp32-hal/examples/serial_interrupts.rs? Does that fulfill your requirements?

[hongquan]

Hi @SergioGasquez , I don't understand use case of that example, so it may not be what I'm looking for.

What I need is that espflash monitor command don't take exclusive access on /dev/ttyUSB0, so I can use another program, like Python pyserial to write some command to my ESP32 board's UART0.

On another hand, I want to use ESP32 UART0 both for flashing, monitor and receiving command from PC.

[MabezDev]

@hongquan Thanks for the request! I don't think this is something we want to handle in espflash itself. Feel free to use espflash as a library and manage your own monitor which doesn't take full control of the port.

[hongquan]

Thank you, @MabezDev .
I respect your vision of espflash. If the feature cannot be added to espflash, I will use pyserial's miniterm to monitor the board.