Dear community, on my new carrier card (with SOM) I try to read something from the serial console (DUAL USB UART). It should be very easy, I know, just plug in USB cable and start picocom or minicom or kermit with 115200 baud 8n1 and no flow control... I did this for years with many other boards, but here I am lost, I just can not get any input from this board.
I use a laptop with ubuntu linux (kernel 4.4.0-53) here and when I plug in the UART, I can see /dev/ttyUSB0 and /dev/ttyUSB1. But any connection to one of these (first I try ttyUSB0) gives exactly nothing.
I think that the USB on the laptop is generally working, because other devices (mouse, ...) function al right and I was able to flash the SOM with a new image.
Are there maybe any jumpers or DIPs which I forgot to set? I played with JP1 and SW2, but never could read from the serial console on this board.
Thank you for ideas...
