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AD-FMCOMMS1-EBZ  No OS Reference design - ADC Function

Question asked by DrTom on Feb 14, 2013
Latest reply on Feb 15, 2013 by DrTom

The ref design calls a function adc_capture(fmc, size,location_to_write). When "size" is small 1024, the function performs fine, but if you increase the size to 32k, the program will reboot itself after a few calls toe adc_capture().

The adc_capture() fucntion uses Xil_Out32((baddr + 0x048), sa); // capture start address


1) I know this writes "location_to_write" to the location (baddr+0x48) but where do you find out what is at the address (baddr+0x48) ?


2) I know this uses DMA, how do you determine how much data can you write with one adc_capture() call?


3) How can you see the address and how much space is availalbe in the DDR-3 memory for storing adc data?