DMA SPI achieves wire speed, 44.3 mbs for block transfers Proof-of-concept

Dependencies:   mbed

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

Committer:
manitou
Date:
Tue Nov 10 12:07:03 2015 +0000
Revision:
0:6242d93d3c51
DMA SPI proof of concept, wire speed 44.3 mbs

Who changed what in which revision?

UserRevisionLine numberNew contents of line
manitou 0:6242d93d3c51 1 http://mbed.org/users/mbed_official/code/mbed/builds/9296ab0bfc11