Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 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
14 years ago

The receiving device is clear to me now.

I (re-)checked the documentation on the SPI-core in the Embedded Peripherals Guide, and it is effectively meant to be driven by software. The module has no waitrequest signal to hold of successive writes (read) until each SPI transfer has finished.