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AD9914 control through FPGA

Question asked by _USER_ on May 11, 2015
Latest reply on May 22, 2015 by _USER_

Hello,

i would like to command the AD9914 evaluation board through FPGA strastix III, so in the datasheet it is mention that is possible to configure the internal register in serial mode using SPI protocol.

So i have create a nios sytem with the seguent component :

nios processor, onchip memory, PIO(update,reset,sync_io, and else),SPI 3 wire

But the problem is that when i execute the code, the evaluation board does anything.

I use the internal oscillator of the FPGA to clock the evaluation board but nothing ....

So i need some one to help me about SPI communication with AD9914.

I attach my C code, so anyone can look if there is a problem..

 

Best regards

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