Mark Knecht wrote:
> What's a really simple process for checking out whether this is set
> up correctly?
>
> 1) I don't know that the null modem cable is good. I just bought it.
You could use minicom to test the cable. Since your gigastudio has two
serial ports, you can two minicoms on that machine (one on ttyS0, the
other on ttyS1 - IIRC you have to restart minicom after you changed the
port).
> 2) I don't know how to see if the serial ports are receiving any valid
> data, status signals, or anything else to show they are working.
If you can send some text from one minicom to the other with e.g. 115200
bps, you could try sending a file between them. That should work without
errors (or with nearly no errors).
> 3) I don't know if minicom would display incoming characters by default.
Yes, I think it would. But you can test it with the method from above.
> I do think that I have serial support built into both kernels, but
> I'm not sure where to look to see status of serial ports.
setserial -a /dev/ttyS0
setserial -a /dev/ttyS1
should show your UART (e.g. 16550A), not "unknown".
Regards...
Michael
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