Thanks Steve for the link. 

Software wise my code is almost identical to what you have going on.  (I'm reading instead of writing).

I want to verify that out of the box those additional serial ports are enabled.  Could I possibly missing something there?  If the answer is yes, I'll probably need to take a closer look at the hardware sending the data. 

Thanks for any info.

On Wed, Aug 31, 2011 at 2:03 PM, Steve Sakoman <> wrote:
On Tue, Aug 30, 2011 at 8:51 AM, Bianca Prince <> wrote:
> I'm attempting to communicate with a piece of hardware via the ttyS0 serial
> port - using the Tobi Board 9/10 pins.  I'm attempting to interface with the
> hardware as a simple serial port connection.  So far I've had no luck being
> able read across this connection.
> Right now I'm keeping the software portion very simple just to see if I can
> get something working it's simply using the termios api to open the
> connection set the attributes and attempting to read from it.
> Are there additional things that need to be done to enable this port?  Am I
> missing something in the hardware portion that's required for this to
> function properly.  Driver?
> Any information is appreciated?

Take a look at this example of using one of the serial ports to talk
to a 7 segment display:

It is output only, but will give you a general overview of how to approach this.


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