tom dunigan
DMA SPI achieves wire speed, 44.3 mbs for block transfers Proof-of-concept
Proof-of-concept SPI block transfer using DMA to achieve wire speeds. SPI1 runs at 45mhz, standard SPI write() achieves only 11mbs, DMA version does 44.3 mbs.
More/comparative SPI results at https://github.com/manitou48/DUEZoo/blob/master/SPIperf.txt
History
DMA SPI proof of concept, wire speed 44.3 mbs
2015-11-10, by manitou [Tue, 10 Nov 2015 12:07:03 +0000] rev 0
DMA SPI proof of concept, wire speed 44.3 mbs