Re: [Gumstix-users] help getting ttyS3 to work

[Ryan R. <rjr...@uc...>]

The dmesg stuff is just the kernel identifying the hardware on the CPU.  
The question here is what daughtercard you have.  The stuff that you are 
doing will enable the HWUART, but it still has to be brought out to an 
external interface.  That's where the daughtercard comes in.  Dave 
mentioned how to determine which is which, and you could simply try 
changing the code to open ttyS2 and see if it works.  BTW, don't trust 
stty too much, since it doesn't lock the port.  Hence, another program 
can come along and play with it without warning.

Ryan