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FMCDAQ2 ADC input to DAC output

Question asked by bjbrinks on Aug 26, 2015
Latest reply on Aug 26, 2015 by bjbrinks



I have an FMCDAQ2-EBZ plugged into a VC707 and I'm trying to sample data with the ADC and output the data on a DAC (a simple pass through).  Is it possible using the reference design?  I have been able to generate signals using the DDS and DAC's.  As well as sample the data with the ADC's and view using the iio oscilloscope.  In the register map a loop back is mentioned for the ADC's (0x0106) and the DAC's (0x1106) but I haven't been able to make this work.  To make things more confusing, the iio software tool tip descriptions for these registers don't match the register map documentation descriptions (for example, the DAC register 0x418 tool tip says you must change register 0x1012, which is labeled as reserved).  Is there an easy way to feed the ADC data to the DAC or do I have to do something custom?