void init_dma(void)
{
HWI_Attrs hwiAttrs;
Uns dmaTxSynEvt, dmaRxSynEvt;
Uint32 dmaTxDest, dmaRxSrc;
LgUns tempAdd;
DMA_Config dmaTxCfg, dmaRxCfg;
DMA_FSET(DMAGCR,FREE,0);
DMA_getConfig(hDmaTx, &dmaTxCfg);
dmaTxDest = MCBSP_ADDR(DXR21) << 1;
/* Setup Tx Side addresses based on MCBSP port */
dmaTxCfg.dmacdsal = (DMA_AdrPtr)(dmaTxDest & 0xFFFF);
dmaTxCfg.dmacdsau = ((dmaTxDest >> 15) & 0xFFFF);
tempAdd = (LgUns)(&txBuffer[0]) << 1; /* byte address */
dmaTxCfg.dmacssal = (DMA_AdrPtr)(tempAdd & 0xFFFF);
dmaTxCfg.dmacssau = ((tempAdd >> 15) & 0xFFFF);
dmaTxSynEvt = DMA_DMACCR_SYNC_XEVT1;
dmaTxCfg.dmaccr |= DMA_FMK(DMACCR,SYNC,dmaTxSynEvt);
DMA_config(hDmaTx,&dmaTxCfg);
/* Setup Rx Side addresses based on MCBSP port */
DMA_getConfig(hDmaRx, &dmaRxCfg);
dmaRxSrc = MCBSP_ADDR(DRR11) << 1;
dmaRxCfg.dmacssal = (DMA_AdrPtr)(dmaRxSrc & 0xFFFF);
dmaRxCfg.dmacssau = ((dmaRxSrc >> 15) & 0xFFFF);
tempAdd = (LgUns)(rxstart) << 1; /* byte address */
dmaRxCfg.dmacdsal = (DMA_AdrPtr)(tempAdd & 0xFFFF);
dmaRxCfg.dmacdsau = ((tempAdd >> 15) & 0xFFFF);
dmaRxSynEvt = DMA_DMACCR_SYNC_REVT1;
dmaRxCfg.dmaccr |= DMA_FMK(DMACCR,SYNC,dmaRxSynEvt);
DMA_config(hDmaRx,&dmaRxCfg);
/* Configure DMA to be free running */
DMA_FSET(DMAGCR,FREE,1);
/* Obtain Interrupt IDs for Tx and Rx DMAs */
rxId = DMA_getEventId(hDmaRx);
txId = DMA_getEventId(hDmaTx);
/* plug in the ISR */
hwiAttrs.ier0mask = UARTHW_MCBSP_IER_MASK_DEFAULT;
hwiAttrs.ier1mask = UARTHW_MCBSP_IER_MASK_DEFAULT;
hwiAttrs.arg = NULL;
HWI_dispatchPlug(rxId, (Fxn)rxIsr, &hwiAttrs);
hwiAttrs.ier0mask = UARTHW_MCBSP_IER_MASK_DEFAULT;
hwiAttrs.ier1mask = UARTHW_MCBSP_IER_MASK_DEFAULT;
HWI_dispatchPlug(txId, (Fxn)txIsr, &hwiAttrs);
IRQ_enable(txId);
IRQ_enable(rxId);
}
/**
* \brief Configures Dma
*
* \param chanNum - Dma channel number
*
* \return Dma handle
*/
CSL_DMA_Handle CSL_configDmaForUart(CSL_DMA_ChannelObj *dmaChanObj,
CSL_DMAChanNum chanNum)
{
CSL_DMA_Handle dmaHandle;
CSL_Status status;
dmaHandle = NULL;
/* Initialize Dma */
status = DMA_init();
if (status != CSL_SOK)
{
printf("DMA_init Failed!\n");
}
/* Open A Dma channel */
dmaHandle = DMA_open(chanNum, dmaChanObj, &status);
if(dmaHandle == NULL)
{
printf("DMA_open Failed!\n");
}
/* Configure a Dma channel */
status = DMA_config(dmaHandle, &dmaConfig);
if(status != CSL_SOK)
{
printf("DMA_config Failed!\n");
dmaHandle = NULL;
}
return(dmaHandle);
}
///// program flow reaches expected exit point(s).
/////
void main(void)
{
CSL_DMA_ChannelObj dmaObj;
CSL_Status status;
Uint16 chanNumber;
Uint16 i;
printf("\n DMA POLLED MODE TEST!\n");
for(i = 0; i < CSL_DMA_BUFFER_SIZE; i++)
{
dmaSRCBuff[i] = 0xFFFF;
dmaDESTBuff[i] = 0x0000;
}
#if (defined(CHIP_C5505_C5515) || defined(CHIP_C5504_C5514) || defined(CHIP_C5517))
dmaConfig.pingPongMode = CSL_DMA_PING_PONG_DISABLE;
#endif
dmaConfig.autoMode = CSL_DMA_AUTORELOAD_DISABLE;
dmaConfig.burstLen = CSL_DMA_TXBURST_8WORD;
dmaConfig.trigger = CSL_DMA_SOFTWARE_TRIGGER;
dmaConfig.dmaEvt = CSL_DMA_EVT_NONE;
dmaConfig.dmaInt = CSL_DMA_INTERRUPT_DISABLE;
dmaConfig.chanDir = CSL_DMA_READ;
dmaConfig.trfType = CSL_DMA_TRANSFER_MEMORY;
dmaConfig.dataLen = CSL_DMA_BUFFER_SIZE * 2;
dmaConfig.srcAddr = (Uint32)dmaSRCBuff;
dmaConfig.destAddr = (Uint32)dmaDESTBuff;
status = DMA_init();
if (status != CSL_SOK)
{
printf("DMA_init() Failed \n");
/////INSTRUMENTATION FOR BATCH TESTING -- Part 2 --
///// Reseting PaSs_StAtE to 0 if error detected here.
PaSs_StAtE = 0x0000; // Was intialized to 1 at declaration.
/////
}
for( chanNumber = 0; chanNumber < CSL_DMA_CHAN_MAX; chanNumber++)
{
printf("\n Test for DMA Channel No : %d \t", chanNumber);
dmaHandle = DMA_open((CSL_DMAChanNum)chanNumber,&dmaObj, &status);
if (dmaHandle == NULL)
{
printf("DMA_open() Failed \n");
break;
}
status = DMA_config(dmaHandle, &dmaConfig);
if (status != CSL_SOK)
{
printf("DMA_config() Failed \n");
break;
}
status = DMA_getConfig(dmaHandle, &getdmaConfig);
if (status != CSL_SOK)
{
printf("DMA_getConfig() Failed \n");
break;
}
status = DMA_start(dmaHandle);
if (status != CSL_SOK)
{
printf("DMA_start() Failed \n");
break;
}
while(DMA_getStatus(dmaHandle));
status = DMA_reset(dmaHandle);
if (status != CSL_SOK)
{
printf("DMA_close() Failed \n");
break;
}
status = DMA_close(dmaHandle);
if (status != CSL_SOK)
{
printf("DMA_reset() Failed \n");
break;
}
/* validation for set and get config parameter */
if((dmaConfig.autoMode) != (getdmaConfig.autoMode))
{
printf("Mode not matched\n");
}
if(((dmaConfig.burstLen) != (getdmaConfig.burstLen)))
{
printf("Burst length not matched\n");
}
if(((dmaConfig.trigger) != (getdmaConfig.trigger)))
{
printf("Triger type not matched\n");
}
if(((dmaConfig.dmaEvt) != (getdmaConfig.dmaEvt)) )
{
printf("Event not matched\n");
}
if(((dmaConfig.dmaInt) != (getdmaConfig.dmaInt)))
{
printf("Interrupt state not matched\n");
}
if(((dmaConfig.chanDir) != (getdmaConfig.chanDir)))
{
printf("Direction read or write not matched\n");
}
if(((dmaConfig.trfType) != (getdmaConfig.trfType)))
{
printf("Transfer type not matched\n");
}
if(((dmaConfig.dataLen) != (getdmaConfig.dataLen)))
{
printf("data length of transfer not matched\n");
}
if(((dmaConfig.srcAddr) != (getdmaConfig.srcAddr)))
{
printf("Source address not matched\n");
}
if(((dmaConfig.destAddr) != (getdmaConfig.destAddr)))
{
printf("Destination address not matched\n");
}
for(i = 0; i < CSL_DMA_BUFFER_SIZE; i ++)
{
if(dmaSRCBuff[i] != dmaDESTBuff[i])
{
printf("Buffer miss matched at position %d\n",i);
break;
}
}
if(i == CSL_DMA_BUFFER_SIZE)
{
printf("Success");
}
for(i = 0; i < CSL_DMA_BUFFER_SIZE; i++)
{
dmaSRCBuff[i] = 0xFFFF;
dmaDESTBuff[i] = 0x0000;
}
}
if(chanNumber == 16)
{
printf("\n\n DMA POLLED MODE TEST PASSED!!\n");
}
else
{
printf("\n\n DMA POLLED MODE TEST FAILED!!\n");
/////INSTRUMENTATION FOR BATCH TESTING -- Part 2 --
///// Reseting PaSs_StAtE to 0 if error detected here.
PaSs_StAtE = 0x0000; // Was intialized to 1 at declaration.
/////
}
/////INSTRUMENTATION FOR BATCH TESTING -- Part 3 --
///// At program exit, copy "PaSs_StAtE" into "PaSs".
PaSs = PaSs_StAtE; //If flow gets here, override PaSs' initial 0 with
///// // pass/fail value determined during program execution.
///// Note: Program should next exit to C$$EXIT and halt, where DSS, under
///// control of a host PC script, will read and record the PaSs' value.
/////
}