/* Requests a DMA channel to start a transfer.  */
void DMAChannelRequest(unsigned long ulChannelID)
/* Requests a DMA channel to start a transfer.  */
void DMAChannelRequest(unsigned long ulChannelID)
{
    xASSERT(xDMAChannelIDValid(ulChannelID));
    xHWREG(g_psDMAChannelAddress[ulChannelID] + DMA_DCR) |=
                  (DMA_DCR_CS | DMA_DCR_ERQ |  DMA_DCR_D_REQ | DMA_DCR_EADREQ);
}