//------------------------------------------------------------------------------
/// Configure the DMA transfer buffer by giving transfer mode, it could be single
/// buffer or multi-buffer(LLI/auto-reload/contiguous buffers) with or without
/// Picture-In-Picture mode.
/// \param channel Particular channel number.
/// \param sourceTransferMode Source buffer transfer mode.
/// \param destTransferMode Destination buffer transfer mode.
/// \param lli Pointer to a DmaLinkList structure instance.
/// \param pip Pointer to a PictureInPicture structure.
//------------------------------------------------------------------------------
U8 DMAD_Configure_Buffer(U8 channel, U8 sourceTransferMode, U8 destTransferMode, DmaLinkList *lli, PictureInPicture *pip)
{
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;
}
DMA_SetSourceBufferMode(channel, sourceTransferMode, 0); // Configure source transfer mode.
DMA_SetDestBufferMode(channel, destTransferMode, 0); // Configure destination transfer mode.
if(lli)
{
DMA_SetDescriptorAddr(channel, (U32)(&lli[0]));
}
else
{
DMA_SetDescriptorAddr(channel, 0);
}
if(pip)
{
if(pip->pipSourceBoundarySize)// If source picture-in-picture mode is enabled, program the DMAC_SPIP.
{
DMA_SPIPconfig(channel, pip->pipSourceHoleSize, pip->pipSourceBoundarySize); // If destination picture-in-picture mode is enabled, program the DMAC_DPIP.
}
if(pip->pipDestBoundarySize)
{
DMA_DPIPconfig(channel, pip->pipDestHoleSize, pip->pipDestBoundarySize);
}
}
return 0;
}
//------------------------------------------------------------------------------
/// Configure the DMA transfer buffer by giving transfer mode, it could be single
/// buffer or multi-buffer(LLI/auto-reload/contiguous buffers) with or without
/// Picture-In-Picture mode.
/// \param dwChannel Particular dwChannel number.
/// \param sourceTransferMode Source buffer transfer mode.
/// \param destTransferMode Destination buffer transfer mode.
/// \param lli Pointer to a DmaLinkList structure instance.
/// \param pip Pointer to a PictureInPicture structure.
//------------------------------------------------------------------------------
extern uint32_t DMAD_Configure_Buffer( uint32_t dwChannel, uint32_t sourceTransferMode,
uint32_t destTransferMode, DmaLinkList *lli )
{
DmaTransfer *pTransfer = &(dmad.transfers[dwChannel]) ;
// Check that no transfer is pending on the dwChannel
if ( pTransfer-> transferSize > 0 )
{
TRACE_ERROR("DAM transfer is already pending\n\r");
return DMAD_ERROR_BUSY ;
}
// Configure source transfer mode.
DMA_SetSourceBufferMode( DMAC, dwChannel, sourceTransferMode, 0 ) ;
// Configure destination transfer mode.
DMA_SetDestBufferMode( DMAC, dwChannel, destTransferMode, 0 ) ;
if ( lli )
{
DMA_SetDescriptorAddr( DMAC, dwChannel, (uint32_t)(&lli[0]) ) ;
}
else
{
DMA_SetDescriptorAddr( DMAC, dwChannel, 0 ) ;
}
return 0 ;
}
//------------------------------------------------------------------------------
/// Configure the DMA transfer buffer by giving transfer mode, it could be single
/// buffer or multi-buffer(LLI/auto-reload/contiguous buffers) with or without
/// Picture-In-Picture mode.
/// \param channel Particular channel number.
/// \param sourceTransferMode Source buffer transfer mode.
/// \param destTransferMode Destination buffer transfer mode.
/// \param lli Pointer to a DmaLinkList structure instance.
/// \param pip Pointer to a PictureInPicture structure.
//------------------------------------------------------------------------------
unsigned char DMAD_Configure_Buffer(unsigned char channel,
unsigned char sourceTransferMode,
unsigned char destTransferMode,
DmaLinkList *lli,
PictureInPicture *pip)
{
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;
}
// Configure source transfer mode.
DMA_SetSourceBufferMode(channel, sourceTransferMode, 0);
// Configure destination transfer mode.
DMA_SetDestBufferMode(channel, destTransferMode, 0);
if(lli){
DMA_SetDescriptorAddr(channel, (unsigned int)(&lli[0]));
}
else {
DMA_SetDescriptorAddr(channel, 0);
}
if(pip){
#if defined(AT91C_SRC_PIP)
// If source picture-in-picture mode is enabled, program the DMAC_SPIP.
if(pip->pipSourceBoundarySize){
// If destination picture-in-picture mode is enabled, program the DMAC_DPIP.
DMA_SPIPconfiguration(channel, pip->pipSourceHoleSize, pip->pipSourceBoundarySize);
}
#endif
#if defined(AT91C_DST_PIP)
if(pip->pipDestBoundarySize){
DMA_DPIPconfiguration(channel, pip->pipDestHoleSize, pip->pipDestBoundarySize);
}
#endif
}
return 0;
}
