/* Do a DMA transfer M2M, M2P,P2M or P2P */
void Chip_DMA_Transfer(uint8_t ChannelNum, uint32_t src, uint32_t dst, FlowControlType TransferType, uint32_t Size)
{
GPDMA_Channel_CFG_Type GPDMACfg;
uint8_t SrcPeripheral = 0, DstPeripheral = 0;
GPDMACfg.ChannelNum = ChannelNum;
GPDMACfg.TransferType = TransferType;
GPDMACfg.TransferSize = Size;
switch (TransferType) {
case GPDMA_TRANSFERTYPE_M2M_CONTROLLER_DMA:
GPDMACfg.SrcAddr = (uint32_t) src;
GPDMACfg.DstAddr = (uint32_t) dst;
src = 0;
dst = 0;
GPDMACfg.TransferWidth = GPDMA_WIDTH_BYTE;
break;
case GPDMA_TRANSFERTYPE_M2P_CONTROLLER_DMA:
case GPDMA_TRANSFERTYPE_M2P_CONTROLLER_PERIPHERAL:
GPDMACfg.SrcAddr = (uint32_t) src;
src = 0;
GPDMACfg.DstAddr = (uint32_t) GPDMA_LUTPerAddr[dst];
DstPeripheral = DMAMUX_Config(dst);
break;
case GPDMA_TRANSFERTYPE_P2M_CONTROLLER_DMA:
case GPDMA_TRANSFERTYPE_P2M_CONTROLLER_PERIPHERAL:
GPDMACfg.SrcAddr = (uint32_t) GPDMA_LUTPerAddr[src];
GPDMACfg.DstAddr = (uint32_t) dst;
SrcPeripheral = DMAMUX_Config(src);
dst = 0;
break;
case GPDMA_TRANSFERTYPE_P2P_CONTROLLER_DMA:
case GPDMA_TRANSFERTYPE_P2P_CONTROLLER_DestPERIPHERAL:
case GPDMA_TRANSFERTYPE_P2P_CONTROLLER_SrcPERIPHERAL:
GPDMACfg.SrcAddr = (uint32_t) GPDMA_LUTPerAddr[src];
GPDMACfg.DstAddr = (uint32_t) GPDMA_LUTPerAddr[dst];
SrcPeripheral = DMAMUX_Config(src);
DstPeripheral = DMAMUX_Config(dst);
break;
default:
break;
}
IP_GPDMA_Setup(LPC_GPDMA, &GPDMACfg, (uint32_t) GPDMA_LUTPerBurst[src], (uint32_t) GPDMA_LUTPerBurst[dst],
(uint32_t) GPDMA_LUTPerWid[src], (uint32_t) GPDMA_LUTPerWid[dst], (uint32_t) GPDMA_LUTPerAddr[src],
(uint32_t) GPDMA_LUTPerAddr[dst], SrcPeripheral, DstPeripheral);
/* Start the Channel */
IP_GPDMA_ChannelCmd(LPC_GPDMA, ChannelNum, ENABLE);
}
/* Stop a stream DMA transfer */
void Chip_DMA_Stop(uint8_t ChannelNum)
{
IP_GPDMA_ChannelCmd(LPC_GPDMA, (ChannelNum), DISABLE);
if (Chip_GPDMA_IntGetStatus(GPDMA_STAT_INTTC, ChannelNum)) {
/* Clear terminate counter Interrupt pending */
Chip_GPDMA_ClearIntPending(GPDMA_STATCLR_INTTC, ChannelNum);
}
if (Chip_GPDMA_IntGetStatus(GPDMA_STAT_INTERR, ChannelNum)) {
/* Clear terminate counter Interrupt pending */
Chip_GPDMA_ClearIntPending(GPDMA_STATCLR_INTERR, ChannelNum);
}
ChannelHandlerArray[ChannelNum].ChannelStatus = DISABLE;
}
/* Do a DMA transfer M2M, M2P,P2M or P2P */
Status Chip_DMA_Transfer(LPC_GPDMA_T *pGPDMA,
uint8_t ChannelNum,
uint32_t src,
uint32_t dst,
IP_GPDMA_FLOW_CONTROL_T TransferType,
uint32_t Size)
{
GPDMA_Channel_CFG_T GPDMACfg;
uint8_t SrcPeripheral = 0, DstPeripheral = 0;
uint32_t cwrd;
int ret;
ret = Chip_DMA_InitChannelCfg(pGPDMA, &GPDMACfg, ChannelNum, src, dst, Size, TransferType);
if (ret < 0) {
return ERROR;
}
/* Adjust src/dst index if they are memory */
if (ret & 1) {
src = 0;
}
else {
SrcPeripheral = DMAMUX_Config(src);
}
if (ret & 2) {
dst = 0;
}
else {
DstPeripheral = DMAMUX_Config(dst);
}
cwrd = IP_GPDMA_MakeCtrlWord(&GPDMACfg,
(uint32_t) GPDMA_LUTPerBurst[src],
(uint32_t) GPDMA_LUTPerBurst[dst],
(uint32_t) GPDMA_LUTPerWid[src],
(uint32_t) GPDMA_LUTPerWid[dst]);
if (IP_GPDMA_Setup(pGPDMA, &GPDMACfg, cwrd, 0, SrcPeripheral, DstPeripheral) == ERROR) {
return ERROR;
}
/* Start the Channel */
IP_GPDMA_ChannelCmd(pGPDMA, ChannelNum, ENABLE);
return SUCCESS;
}
/* Do a DMA scatter-gather transfer M2M, M2P,P2M or P2P using DMA descriptors */
Status Chip_DMA_SGTransfer(LPC_GPDMA_T *pGPDMA,
uint8_t ChannelNum,
const DMA_TransferDescriptor_t *DMADescriptor,
IP_GPDMA_FLOW_CONTROL_T TransferType)
{
const DMA_TransferDescriptor_t *dsc = DMADescriptor;
GPDMA_Channel_CFG_T GPDMACfg;
uint8_t SrcPeripheral = 0, DstPeripheral = 0;
uint32_t src = DMADescriptor->src, dst = DMADescriptor->dst;
int ret;
ret = Chip_DMA_InitChannelCfg(pGPDMA, &GPDMACfg, ChannelNum, src, dst, 0, TransferType);
if (ret < 0) {
return ERROR;
}
/* Adjust src/dst index if they are memory */
if (ret & 1) {
src = 0;
}
else {
SrcPeripheral = DMAMUX_Config(src);
}
if (ret & 2) {
dst = 0;
}
else {
DstPeripheral = DMAMUX_Config(dst);
}
if (IP_GPDMA_Setup(pGPDMA, &GPDMACfg, dsc->ctrl, dsc->lli, SrcPeripheral, DstPeripheral) == ERROR) {
return ERROR;
}
/* Start the Channel */
IP_GPDMA_ChannelCmd(pGPDMA, ChannelNum, ENABLE);
return SUCCESS;
}
