tom dunigan / Mbed 2 deprecated k64f_dmaspit

SPI DMA based on teensy DmaSpi library

Dependencies:   mbed

This is proof of concept, porting the teensy 3 DmaSpi library to mbed MK64F. Program does 8-bit DMA SPI transfers. Verified with jumper between MOSI and MISO and with logic analyzer. With SPI clock @12MHz, data rate for 1024 bytes is 10.6 mbs. With SPI clock @30MHz, 22.6 mbs

Diff: mbed.bld

Revision:
0:03cb2b9cf5d3
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Sun Feb 21 16:52:03 2016 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/mbed_official/code/mbed/builds/252557024ec3
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