CSL Configured DMA on SYS/BIOS

Hi Suraj,

You should use SYS/BIOS Hwi module APIs to register ISR handlers. SYS/BIOS manages the interrupt controller and if you use CSL APIs to register ISRs, it conflicts with SYS/BIOS Hwi module.

What target are you running SYS/BIOS on ?

Best,

Ashish

Thanks Ashish,

I am using

TMS320C6455 DSK.

DSP/BIOS - 6.5.

From main function i have created the thread, untill DMA is enabled everthing is fine. But after DMA is enabled interrupts are working fine but no other code in thread is executing (seems it is hanging).

code is  interfaced the board through EMC using NDK.

Suraj,

Can you share the code ? I would like to take a look just to make sure BIOS APIs are not conflicting with other APIs.

Also are you using SYS/BIOS or DSP/BIOS ? I do not recongize DSP/BIOS 6.5 as a version.

Best,

Ashish

sorry, 

I am using 

SYS/BIOS 6.35.1.29.

I have changed my interrupt logics using HWI. Interrupt is working fine.

But on interrupt i am waiting for a flag to disable the EDMA in same TASK, although the flag is set in the ISR it is not validating the condition

the task is going to idel function.

I am using MCBSP1 with EDMA and i have configured the HWI as follows:

var ti_sysbios_hal_Hwi0Params = new ti_sysbios_hal_Hwi.Params();
ti_sysbios_hal_Hwi0Params.instance.name = "ti_sysbios_hal_Hwi0";
ti_sysbios_hal_Hwi0Params.eventId = 43;
Program.global.ti_sysbios_hal_Hwi0 = ti_sysbios_hal_Hwi.create(4, "&TxDMAIsr", ti_sysbios_hal_Hwi0Params);

event ID 43 is given with reference to interrupt event number in datasheet.

Interrupt no 4 is vector id.

kindly verify the above configuration .

CODE SNIPPET:

In my main function I have created a 2 task as follows:

Void main()

{

/* Ethernet Initalization Task*/
Task_Params_init(&taskParams);
taskParams.stack = taskEmacStack;
taskParams.stackSize = sizeof(taskEmacStack);
task=Task_create((Task_FuncPtr)Task_Transmit, &taskParams, &eb);
if (task == NULL) {
printf("Ethernet_task() failed!\n");

/* Pheripheral Task*/
Task_Params_init(&taskParams1);
taskParams1.stack = taskEmacStack1;
taskParams1.stackSize = sizeof(taskEmacStack1);
task1=Task_create((Task_FuncPtr)Task_Pheriperal, &taskParams1, &eb);
if (task1 == NULL) {
printf("Task_Pheripheral() failed!\n");

BIOS_exit(0);
}

In pheripheral task, using CSL i have configured EDMA  and enabling the MCBSP.

(Interrupt logics are done with HWI as mentioned above).

Void Task_Pheriperal(UArg a0, UArg a1)
{

   fdOpenSession(TaskSelf());

    configureEDMA();

 fdCloseSession(TaskSelf());

}

Code snippet as follows:

void configureEDMA()

{

CSL_edma3Init(&edmaContext);

/* Edma Module Level Open */
hModule = CSL_edma3Open(&edmaObj,CSL_EDMA3,NULL,&EDMA_status);

/* Query Module Info */
CSL_edma3GetHwStatus(hModule,CSL_EDMA3_QUERY_INFO, &info);

/********************************Setup for Tx******************************/

/* Setup the DRAE Masks */

regionAccess.region = CSL_EDMA3_REGION_0;
regionAccess.drae = 0xFFFF;
regionAccess.draeh = 0x0;

CSL_edma3HwControl(hModule,CSL_EDMA3_CMD_DMAREGION_ENABLE,&regionAccess);

/* Open transmit channel */
chParam.regionNum = CSL_EDMA3_REGION_0;
chParam.chaNum = CSL_EDMA3_CHA_XEVT1;
hChannel = CSL_edma3ChannelOpen(&ChObj,CSL_EDMA3,&chParam,&EDMA_status);

/* Open Receiver channel */
chParam1.regionNum = CSL_EDMA3_REGION_0;
chParam1.chaNum = CSL_EDMA3_CHA_REVT1;
hChannel1 = CSL_edma3ChannelOpen(&ChObj1,CSL_EDMA3,&chParam1,&EDMA_status);

/* Transmit Channel setup */

hParamBasic = CSL_edma3GetParamHandle(hChannel,CSL_EDMA3_CHA_XEVT1, &EDMA_status);
hParamBasic1 = CSL_edma3GetParamHandle(hChannel,66, &EDMA_status);
hParamBasic2 = CSL_edma3GetParamHandle(hChannel,67, &EDMA_status);
hParamBasic3 = CSL_edma3GetParamHandle(hChannel,68, &EDMA_status);

/* Receiver Channel setup */

hParamBasic4 = CSL_edma3GetParamHandle(hChannel1,CSL_EDMA3_CHA_REVT1, &EDMA_status);
hParamBasic5 = CSL_edma3GetParamHandle(hChannel1,69, &EDMA_status);
hParamBasic6 = CSL_edma3GetParamHandle(hChannel1,70, &EDMA_status);
hParamBasic7 = CSL_edma3GetParamHandle(hChannel1,71, &EDMA_status);

/* Transmiter param setup */

myParamSetup.option = CSL_EDMA3_OPT_MAKE(CSL_EDMA3_ITCCH_DIS,CSL_EDMA3_TCCH_DIS,\
CSL_EDMA3_ITCINT_DIS, \
CSL_EDMA3_TCINT_EN,\
CSL_EDMA3_CHA_XEVT1, \
CSL_EDMA3_TCC_NORMAL, \
CSL_EDMA3_FIFOWIDTH_NONE, \
CSL_EDMA3_STATIC_DIS, \
CSL_EDMA3_SYNC_A,\
CSL_EDMA3_ADDRMODE_INCR,\
CSL_EDMA3_ADDRMODE_INCR \
);

myParamSetup.srcAddr = (Uint32)g_nTxBuff0; //Uint32 //pong
myParamSetup.dstAddr = (Uint32)CSL_MCBSP_1_TX_EDMA_REGS;
myParamSetup.aCntbCnt = CSL_EDMA3_CNT_MAKE(2,g_unSineToneLen); //4,5184
myParamSetup.srcDstBidx = CSL_EDMA3_BIDX_MAKE(2,0); //4,0
myParamSetup.linkBcntrld = CSL_EDMA3_LINKBCNTRLD_MAKE(hParamBasic2,1); //CSL_EDMA3_LINK_NULL //1
myParamSetup.srcDstCidx = CSL_EDMA3_CIDX_MAKE(0,0);
myParamSetup.cCnt = 1;

CSL_edma3HwChannelSetupParam (hChannel, CSL_EDMA3_CHA_XEVT1);
CSL_edma3HwChannelSetupQue(hChannel, CSL_EDMA3_QUE_1);
CSL_edma3ParamSetup(hParamBasic,&myParamSetup);

myParamSetup.srcAddr = (Uint32)g_nTxBuff2;
myParamSetup.aCntbCnt = CSL_EDMA3_CNT_MAKE(2,5184);
myParamSetup.srcDstBidx = CSL_EDMA3_BIDX_MAKE(2,0);
myParamSetup.linkBcntrld = CSL_EDMA3_LINKBCNTRLD_MAKE(hParamBasic3,1);
CSL_edma3ParamSetup(hParamBasic1,&myParamSetup);

myParamSetup.srcAddr = (Uint32)g_nTxBuff1;
myParamSetup.aCntbCnt = CSL_EDMA3_CNT_MAKE(2,5184);
myParamSetup.srcDstBidx = CSL_EDMA3_BIDX_MAKE(2,0);
myParamSetup.linkBcntrld = CSL_EDMA3_LINKBCNTRLD_MAKE(hParamBasic1,1);

CSL_edma3ParamSetup(hParamBasic2,&myParamSetup);
myParamSetup.srcAddr = (Uint32)g_nTxBuff0;
myParamSetup.aCntbCnt = CSL_EDMA3_CNT_MAKE(2,5184);
myParamSetup.srcDstBidx = CSL_EDMA3_BIDX_MAKE(2,0);
myParamSetup.linkBcntrld = CSL_EDMA3_LINKBCNTRLD_MAKE(hParamBasic2,1);
CSL_edma3ParamSetup(hParamBasic3,&myParamSetup);

/******************************************************************/
/* Receiver param setup */

myParamSetup1.option = CSL_EDMA3_OPT_MAKE(CSL_EDMA3_ITCCH_DIS,CSL_EDMA3_TCCH_DIS,\
CSL_EDMA3_ITCINT_DIS, \
CSL_EDMA3_TCINT_EN,\
CSL_EDMA3_CHA_REVT1, \
CSL_EDMA3_TCC_NORMAL, \
CSL_EDMA3_FIFOWIDTH_NONE, \
CSL_EDMA3_STATIC_DIS, \
CSL_EDMA3_SYNC_A,\
CSL_EDMA3_ADDRMODE_INCR,\
CSL_EDMA3_ADDRMODE_INCR \
);

myParamSetup1.srcAddr = (Uint32)CSL_MCBSP_1_RX_EDMA_REGS; //Uint32 //pong
myParamSetup1.dstAddr = (Uint32)g_nRxBuff0;
myParamSetup1.aCntbCnt = CSL_EDMA3_CNT_MAKE(2,5184); //4,5184
myParamSetup1.srcDstBidx = CSL_EDMA3_BIDX_MAKE(0,2); //4,0
myParamSetup1.linkBcntrld = CSL_EDMA3_LINKBCNTRLD_MAKE(hParamBasic6,1); //CSL_EDMA3_LINK_NULL //1
myParamSetup1.srcDstCidx = CSL_EDMA3_CIDX_MAKE(0,0);
myParamSetup1.cCnt = 1;

CSL_edma3HwChannelSetupParam (hChannel1, CSL_EDMA3_CHA_REVT1);
CSL_edma3HwChannelSetupQue(hChannel1, CSL_EDMA3_QUE_1);
CSL_edma3ParamSetup(hParamBasic4,&myParamSetup1);

myParamSetup1.dstAddr = (Uint32)g_nRxBuff0;
myParamSetup1.aCntbCnt = CSL_EDMA3_CNT_MAKE(2,5184);
myParamSetup1.srcDstBidx = CSL_EDMA3_BIDX_MAKE(0,2);
myParamSetup1.linkBcntrld = CSL_EDMA3_LINKBCNTRLD_MAKE(hParamBasic6,1);
CSL_edma3ParamSetup(hParamBasic5,&myParamSetup1);

myParamSetup1.dstAddr = (Uint32)g_nRxBuff1;
myParamSetup1.aCntbCnt = CSL_EDMA3_CNT_MAKE(2,5184);
myParamSetup1.srcDstBidx = CSL_EDMA3_BIDX_MAKE(0,2);
myParamSetup1.linkBcntrld = CSL_EDMA3_LINKBCNTRLD_MAKE(hParamBasic5,1);
CSL_edma3ParamSetup(hParamBasic6,&myParamSetup1);

CSL_edma3HwChannelControl(hChannel,CSL_EDMA3_CMD_CHANNEL_CLEAR,NULL);

CSL_edma3HwChannelControl(hChannel, CSL_EDMA3_CMD_CHANNEL_ENABLE, NULL);
CSL_edma3HwChannelControl(hChannel1,CSL_EDMA3_CMD_CHANNEL_CLEAR,NULL);
CSL_edma3HwChannelControl(hChannel1, CSL_EDMA3_CMD_CHANNEL_ENABLE, NULL);

}

Regards,

Surajkumar