Hi,
we use the PicoCOM4 with a self compiled version of the latest 1.4 Kernel. And run now in the problem that the port ttySAC1 seams not to run on the right baud rate. I changed the serial example to cfsetispeed(&options, B115200);
cfsetospeed(&options, B115200);
where case B115200: inputSpeed = 115200; break;
after opening the port I send known data to the port but only get crap. For control I read the stream with a logic analyzer in parallel. These data is correct. I notized that the logic analyzer determined the baud rate of some packages I send from the ttySAC1 to the test device is only 39215 bps.
Any idea where this behaviour comes from? I suspected the serial console in the kernel parameters, but redirecting the console to tty0 doesn't change anything.
Sincerely yours
Christian Moll