Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
13 years ago

SPI with DMA is not working?

Hi, everyone I am using SPI Master Core on FPGA to transmit data to SPI slave (offboard device). I want to use DMA to free my NIOS for other tasks during SPI data transfer. My Idea is NIOS...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
13 years ago

Thanks again Socrates!

I don't think it is a problem with DMA or SGDMA, but with SPI. I must receive RXdata everytime I have sent TXdata. Or I would get Receiver Overrun Error.

I don't want to interrupt Txdata channel after each sending in order to receive unused Rxdata and so to reset RRDY bit in status register.

has somebody Idea?