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LPC1778 rev.2 DMA do not read all data from MCI fifo

Question asked by lpcware Employee on Jun 15, 2016

Content originally posted in LPCWare by megajohn on Mon Mar 18 08:26:03 MST 2013
Hi
Sorry my english
i am modify Fat Chan Example for LPC23xx to my LPC1778
if i am config DMA and MCI for recieve block №0, then i get only 480 bytes. But request 512 bytes. I am search lost 32 bytes in fifo MCI.

 

Why DMA controller do not read this bytes ?!

 

All images attach. Green color - bytes transfer ok to my mem, red - bytes transfer fail

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