Hi, i have a external board equip ftdi chip, my AM335x can communicate with it by USB port. I have build ftdi_sio.ko for the kernel on the target board(AM335x), and it also could see the device on /dev/tty**. But.... when i wrote a example by Qt and put it on the target board (this program just always try to read data and show out), I found whatever data I sent to my target board, my program always show the string that i never sent, i thought my program indeed received the data from the host, but why they always are the incorrect data??? The setting of both target board and host computer is the same(baudrate, stopbit...etc), does anyone know what i missed??
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