Frank Li

@nvlsianpu Yes, `BOOT_SERIAL_WAIT_FOR_DFU` can do the same. It is a relatively simple way to monitor the DFU data packets from the serial port and enter the recovery mode when starting...

> @lgl88911 I understand your case now. I wonder whether would be possible to make BOOT_SERIAL_WAIT_FOR_DFU implementation optionally sensitive for a single character, so the codebase will be shared with...

> I mean check specific single character for one option, or DFU request for the second on. Selected at build-time. I agree. Maybe it's easier to check the specified characters...

It seems to be the problem caused by WSL1 not supporting TIOCEXCL. Both esptool.py and minicom will not use TIOCEXCL, so they can work normally under WSL1. Is it necessary...

It should really be an issue to `serial`. rust is very new to me, can you tell me the github repo URL of `serial`? Thanks

Thanks, I have submitted https://github.com/dcuddeback/serial-rs/issues/68 to serial-rs. if you don't think it is necessary to keep this issue, I will close it.