implement LPC1768 GPDMA API

Dependents:   LPC1768_DMA_implementation

Currently, only LPC1768 HAL level API have been implemented. You can also find the test code to test the m2p and m2m here The target is to implement the user side platform agnostic API to make it more easily to use DMA.

There are still quite a few things undone (list in priority order):

1. Implement user side API to provide platform agnostic user friendly API

2. Tidy up the codes and add more comments

3. Create more test cases

4. Fully test the codes using mbed sdk automated test suits

5. Implement LLI

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Files at revision 1:86b13bfcbe46

Name Size Actions
LPC1768_dma.cpp 8489 Revisions Annotate
LPC1768_dma.h 2938 Revisions Annotate