No-Os drivers DAC_DMA Example build problem

Hi Arun,

Thanks for the feedback, the adrv9009 DMA example was indeed broken by recent changes.

Please see this pull request, you may use the commit of this pull request to be able to compile and play with the DMA example.

https://github.com/analogdevicesinc/no-OS/pull/430

Best regards,

buha

Thank you for the reply.

Now I am getting

AD9528 SPI Read Verify failed (0x0)

error: ad9528_setup() failed with (-1)

on my console output

How to solve this issue?

is there any more changes required at gpio api i.e gpio.c and gpio.h

Please suggest.

Regards

Arun Kumar

Just reading from memory and print it out as below. 

uint32_t *P2StartAdd = DDR_MEM_BASEADDR + 0x800000;
memcpy(Data2Store_Test, P2StartAdd, (16384 * 8)/4);
xil_printf("\n\n\n\n ******************** Rx data ******************** \n");
for(int i=0; i< ((16384 * 8)/4) ; i++)
{
	xil_printf(" 0x%08x  ", Data2Store_Test[i]);
	xil_printf("\n");
}

Please note that in memory you should have 16384 samples, but 8 times more bytes since each sample requires 2 bytes and there are 4 channels: I0, Q0, I1, Q1.

So, first 16 bytes will belong to I0, the next 16 bytes to Q0 and so one.

Dragos

Thanks. I have considered the above fact you mentioned. Sometimes I receive just a noise. 

Don't forget to invalidate the cache memory (Xil_DCacheInvalidateRange()) after each DMA transfer to be sure you are reading the data from the actual main memory and not from the cache memory. Make sure the links are in DATA mode too.

Dragos

I will check the cache memory. The problem is that I am receiving data (not a good data off course) once and the next power up I am receiving noise. In the log message it mentioned Link status is Data, I am thinking the link is fine, is that right? 

Thanks

I have tried your suggestion by including Xil_DCacheInvalidateRange() after DMA transfer, still I am reading noise sometimes in several power ups. Please let me know if you have any other ideas. 

Thanks

Can you describe a power up when you are receiving only noise? Is it a power on from a completely powered off state that implies the bitstream programming and software application downloading/running?

Thanks,
Dragos

SDK program starts headless.c  that contains initialization and setup and then sending data and receiving followed by the final stage that power down the hardware. Is it necessary to power down the hardware? I am thinking something is not right in the DAC_DMA_Example example, either software, configuration or hardware. Because I did not change the program other than printing out the results.

Thanks

If you don't see the issue on a freshly powered on board (please confirm if this is the case), the issue might be caused by some components that are not properly reset when the software is re-run.

Dragos

I am seeing the issue most of the time, even if I reset the FPGA board. The sine wave I am receiving is also very noisy. I checked the status of Rx/Tx or radio on and any other reasons I thought but I did not find the solution. I tried less lane HDL version still not good, I actually spend a lot of time to make it work, unfortunately was not successful. Please let me know if there is a log or functions I can use for find the issue.

Thanks

I am seeing the issue most of the time, even if I reset the FPGA board. The sine wave I am receiving is also very noisy. I checked the status of Rx/Tx or radio on and any other reasons I thought but I did not find the solution. I tried less lane HDL version still not good, I actually spend a lot of time to make it work, unfortunately was not successful. Please let me know if there is a log or functions I can use for find the issue.

Thanks