tom dunigan / Mbed 2 deprecated leo_spiperf

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

Diff: mbed.bld

Revision:
0:6242d93d3c51
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Tue Nov 10 12:07:03 2015 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/mbed_official/code/mbed/builds/9296ab0bfc11
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