Re: [Gumstix-users] ttyS2 RX problem

[Dave H. <dhy...@gm...>]

Hi Justin,

> I'm having trouble getting receive to work on the stuart on the gumstix.
> I'm trying to run the sertest sample program using ttyS2 and it does not
> seem to print the incoming data.  I have tested it in a variety of
> configurations, and it appears that I can send data out from the gumstix to
> a pc just fine but not vice versa.  Even if I attempt a simple loopback by
> shorting Tx and Rx together, I do not see the duplicated character.  I've
> also tried sending data from an atmel microcontroller to the gumstix with
> still no success.

There were some versions of the breakout-gs which had the STUART and
I2C ports mislabelled.
Seems it was R277
<http://docswiki.gumstix.com/Breakout>

Otherwise, if you're shorting Tx & Rx on the breakout-gs and not
seeing the characters coming back then there is something wrong.

I assume that when you're trying to send data to the PC that you're
using a serial adapter?

Do you have any other daughtercards you could try, to help isolate the problem?

-- 
Dave Hylands
Vancouver, BC, Canada
http://www.DaveHylands.com/