[Gumstix-users] Has GPIO setup changed? Trying to enable HWUART

[Steven W. <st...@st...>]

Hi there,

I have no directory /proc/gpio, so in trying to follow the instructions 
in Tips and Tricks to enable HWUART, I'm at a loss for how to proceed.  
Gumstix connex 400, build 773.  I would like to use 3 serial ports so 
have wired up breakout-gs board for three connections (S0, S2, S3),  got 
/dev/ttyS0 off of console duty (commented out line in /etc/inittab which 
looks good, tried ttyS2 and ttyS3 but am getting no I/O.  The 
instructions suggest setting GPIO pins, but none of the commands work.

Steve