Bo Berglund wrote: > Are com ports on ARM based embedded Linux named 'ttyAM1', 'ttyAM2' > etc? no, on my custom designed board (6 UARTs), I am using ttyS* for the external UARTs and ttyAT* for the onchip UARTs. For the gadget serial driver ttyGS* is usual. Regards, Bernd.