I'm hoping to construct a feedback loop for a laser using an Chipkit UC32 and an analog-digitial converter ( the one of I have is an AD5780 evaluation board). I've been reading through Digilint's SPI library but I admit I am pretty lost.
( I believe this is on topic to Arduino because I am using an Arduino API. The micro-controller I use is basically an Arduino so I see no difference. )
I'd like to output something simple like a digital AC voltage to the DAC and have it convert it, but as I understand it from here, I am just using the
digitalWritecommand which is basically binary. How do transfer something more complicated to have the DAC convert it?
Likewise, how do I get the DAC to do the reverse, ADC, where it reads in a voltage and sends the Arduino a digital signal through SPI pins?