Am Montag, den 08.06.2020, 16:00 +0000 schrieb Joakim Tjernlund: > User space already does this, but the automatic ECHOing that happens at open > is not possible to address in user space. The buffered chars are sent to both > the terminal app(putty/minicom etc.) and over the wire to the shell waiting there > and that is the problem. There is no way to prevent that ECHO back over the wire(USB) > as the default is to ECHO and one have to open the tty to change to non ECHO. Hi, this is correct, but not specific to CDC-ACM. Could you ask the serial maintainers and look at what SUS respectively POSIX have to say about correct behavior? Regards Oliver
