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Any advice on reading the AD7779 DOUT0 using an STM32 SAI input?

Question asked by david.everett on Oct 31, 2017
Latest reply on Dec 15, 2017 by Lluis

Hi,

 

I'm trying to read samples from all eight channels of an AD7779. I've got the SPI control interface up and running with very few problems but I need to route the analogue samples through the digital serial interface into an SAI input on an STM32F746-family ARM. I can see the DCLK, DRDY and DOUT0 are being driven but the processor doesn't seem to register the data arrival.

 

There's very little support from ST unless you want to use the SAI in a pure audio capacity, but I need to use the interface in "freeform" mode.

 

I'd appreciate any advice - good or bad!

 

Thanks in advance,

 

Dave

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