//------------------------------------------------------------------------------
/// Configure the DMA transfer control infomation.
/// \param channel Particular channel number.
/// \param bufSize Buffer transfer size in byte.
/// \param sourceWidth Source transfer width.
/// \param destWidth Destination transfer width.
/// \param sourceAddress Destination transfer width.
/// \param destAddress Destination transfer width.
//------------------------------------------------------------------------------
unsigned char DMAD_Configure_TransferController(unsigned char channel,
unsigned int bufSize,
unsigned char sourceWidth,
unsigned char destWidth,
unsigned int sourceAddress,
unsigned int destAddress)
{
DmaTransfer *pTransfer = &(dmad.transfers[channel]);
// Check that no transfer is pending on the channel
if (pTransfer-> transferSize > 0 ) {
TRACE_ERROR("DAM transfer is already pending\n\r");
return DMAD_ERROR_BUSY;
}
pTransfer->bufSize = bufSize;
// Set up the transfer width and transfer size.
DMA_SetSourceBufferSize(channel, bufSize, sourceWidth, destWidth, 0);
if(sourceAddress) {
// Write the starting source address.
DMA_SetSourceAddr(channel, sourceAddress);
}
if(destAddress){
// Write the starting destination address.
DMA_SetDestinationAddr(channel, destAddress);
}
return 0;
}
//------------------------------------------------------------------------------
/// Configure the DMA transfer control infomation.
/// \param channel Particular channel number.
/// \param bufSize Buffer transfer size in byte.
/// \param sourceWidth Source transfer width.
/// \param destWidth Destination transfer width.
/// \param sourceAddress Destination transfer width.
/// \param destAddress Destination transfer width.
//------------------------------------------------------------------------------
U8 DMAD_Configure_TransferController(U8 channel, U32 bufSize, U8 sourceWidth, U8 destWidth, U32 sourceAddress, U32 destAddress)
{
DmaTransfer *pTransfer = &(dmad.transfers[channel]);
if(pTransfer-> transferSize > 0) // Check that no transfer is pending on the channel
{
DEBUG_MSG("DAM transfer is already pending");
return DMAD_ERROR_BUSY;
}
pTransfer->bufSize = bufSize;
DMA_SetSourceBufferSize(channel, bufSize, sourceWidth, destWidth, 0); // Set up the transfer width and transfer size.
if(sourceAddress)
{
DMA_SetSourceAddr(channel, sourceAddress); // Write the starting source address.
}
if(destAddress)
{
DMA_SetDestinationAddr(channel, destAddress); // Write the starting destination address.
}
return 0;
}
