4 Replies Latest reply on Nov 25, 2014 4:15 AM by DuarteF

    ttyS1 jack connector not work well all the time

    DuarteF

      Hi everyone,

      i'm desperate with Serial Communication, on Galileo i am trying use ttyS1 by connector stereo Jack.

      To test the connection, i used the shell, so after enable Level shifter (manipulation do GPIO4) i send these two commands:

      - stty -F /dev/ttyS1 speed 9600 cs8 -cstopb -parenb

      -echo -en '\x12\x02' > /dev/ttyS1

       

      most of the time i didn´t receive the two hexadecimals, but sometimes i received.


      I did my own cable, and i followed the configuration:

      download.jpg

      when try: cat < /dev/ttyS1 i didn´t see nothing.

      i don´t Know why it doesn´t work