e0f377fec0
Batch replaced to use new api. User code doesn't need this, but examples should be up to date, and this avoids deprecation warnings.
README
DAC test with DMA and timer 2 trigger
Timer 2 is setup to provide a trigger signal on OC1, with a period of 142 Hz
The DAC is setup on channel 1 to output a sample on the timer trigger.
DMA controller 1, stream 5, channel 7 is used to move data from a predefined array in circular mode when the DAC requests.
DMA transfer complete occurs when the data array has been passed through. In the ISR port PC1 is toggled to provide a CRO trigger.
The analogue output appears on PA4 (DAC channel 1).
Tested and working, example capture from an oscilloscope is included
Ken Sarkies 15/01/2014