nevermind figured it out! Bruce Land on youtube has a good lecture on SPI
I'm sure it would have helped others if you left your original question and posted a link to the solution you found.
Perhaps you can reinstate your original Post?
Please don't delete stuff just because you are no longer interested in it.
...R
My solution was to read up on SPI.
my other technical question is here: Problem Interfacing multiple devices into the Yun using UART and RS-485 - Arduino Yún - Arduino Forum