void DMA_RBG_Configure(void)
{
/* set up DMA channel 0 for the Red LED */
DMA_ChannelPriority(0,2);
DMA_ChannelDestination(0,DMA_VirtToPhys(&OC3RS),4);
DMA_ChannelSource(0,DMA_VirtToPhys(&Red_Duty),4);
DMA_ChannelTransferSize(0,4);
DMA_ChannelTransferSource(0,_TIMER_2_IRQ,ON);
DMA_ChannelAutoEnable(0,ON);
/* set up DMA channel 1 for the Green LED */
DMA_ChannelPriority(1,1);
DMA_ChannelDestination(1,DMA_VirtToPhys(&OC2RS),4);
DMA_ChannelSource(1,DMA_VirtToPhys(&Green_Duty),4);
DMA_ChannelTransferSize(1,4);
DMA_ChannelTransferSource(1,_TIMER_2_IRQ,ON);
DMA_ChannelAutoEnable(1,ON);
/* set up DMA channel 2 for the Blue LED */
DMA_ChannelPriority(2,0);
DMA_ChannelDestination(2,DMA_VirtToPhys(&OC1RS),4);
DMA_ChannelSource(2,DMA_VirtToPhys(&Blue_Duty),4);
DMA_ChannelTransferSize(2,4);
DMA_ChannelTransferSource(2,_TIMER_2_IRQ,ON);
DMA_ChannelAutoEnable(2,ON);
TMR_InterruptTimer2(OFF);
DMA_ChannelEnable(0,ON);
DMA_ChannelEnable(1,ON);
DMA_ChannelEnable(2,ON);
}
/***************************************************************************//**
* @brief
* Stop an ongoing DMA transfer.
*
* @param[in] channelId
* The channel Id of the transfer to stop.
*
* @return
* @ref ECODE_EMDRV_DMADRV_OK on success. On failure an appropriate
* DMADRV @ref Ecode_t is returned.
******************************************************************************/
Ecode_t DMADRV_StopTransfer( unsigned int channelId )
{
if ( !initialized )
{
return ECODE_EMDRV_DMADRV_NOT_INITIALIZED;
}
if ( channelId > EMDRV_DMADRV_DMA_CH_COUNT )
{
return ECODE_EMDRV_DMADRV_PARAM_ERROR;
}
if ( chTable[ channelId ].allocated == false )
{
return ECODE_EMDRV_DMADRV_CH_NOT_ALLOCATED;
}
#if defined( EMDRV_DMADRV_UDMA )
DMA_ChannelEnable( channelId, false );
#elif defined( EMDRV_DMADRV_LDMA )
LDMA_StopTransfer( channelId );
#endif
return ECODE_EMDRV_DMADRV_OK;
}
void DMA_BufferCopy(unsigned long FromAddress, unsigned long ToAddress, unsigned long amount, unsigned char type)
{
DMA_ChannelDestination(3,DMA_VirtToPhys(ToAddress),amount);
DMA_ChannelSource(3,DMA_VirtToPhys(FromAddress),amount);
DMA_ChannelTransferSize(3,amount);
DMA_TransferType = type;
DMA_ChannelEnable(3,ON);
DMA_BufferCopierComplete = FALSE;
DMA_Force(3); // start the transfer
}
