Start the DMA transfer job with the allocated DMA resource and transfer descriptor.
dma_start_transfer_job(&example_resource);
2.
Set the software trigger for the DMA channel. This can be done before or after the DMA job is started. Note that all transfers needs a trigger to start.
dma_trigger_transfer(&example_resource);
3.
Waiting for the setting of the transfer done flag.
while (!transfer_is_done) {/* Wait for transfer done */}