求教关于edma3的问题

您的描述不太清楚，麻烦说明使用的是哪个用例？操作方式相关信息。

就是TI自带的edma_test.c

myParamSetup.option = CSL_EDMA3_OPT_MAKE(CSL_EDMA3_ITCCH_DIS, \
CSL_EDMA3_TCCH_DIS, \
CSL_EDMA3_ITCINT_DIS, \
CSL_EDMA3_TCINT_EN, \
0, 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)srcBuff1;
myParamSetup.aCntbCnt = CSL_EDMA3_CNT_MAKE(256,1);
myParamSetup.dstAddr = (Uint32)dstBuff1;
myParamSetup.srcDstBidx = CSL_EDMA3_BIDX_MAKE(1,1);
myParamSetup.linkBcntrld= CSL_EDMA3_LINKBCNTRLD_MAKE(hParamPong,0);
myParamSetup.srcDstCidx = CSL_EDMA3_CIDX_MAKE(0,1);
myParamSetup.cCnt = 1;

/* Ping setup */
if (CSL_edma3ParamSetup(hParamPing,&myParamSetup) != CSL_SOK)
{
printf ("Error: EDMA Parameter Entry Setup failed\n");
return -1;
};

/* Pong setup */
myParamSetup.linkBcntrld = CSL_EDMA3_LINKBCNTRLD_MAKE(hParamPing,0);
myParamSetup.option = CSL_EDMA3_OPT_MAKE(CSL_EDMA3_ITCCH_DIS, \
CSL_EDMA3_TCCH_DIS, \
CSL_EDMA3_ITCINT_DIS, \
CSL_EDMA3_TCINT_EN,\
1, CSL_EDMA3_TCC_NORMAL,\
CSL_EDMA3_FIFOWIDTH_NONE, \
CSL_EDMA3_STATIC_EN, \
CSL_EDMA3_SYNC_A, \
CSL_EDMA3_ADDRMODE_INCR, \
CSL_EDMA3_ADDRMODE_INCR );
myParamSetup.srcAddr = (Uint32)srcBuff2;
myParamSetup.dstAddr = (Uint32)dstBuff2;
if (CSL_edma3ParamSetup(hParamPong,&myParamSetup) != CSL_SOK)
{
printf ("Error: EDMA Parameter Entry Setup failed\n");
return -1;
};

/*******************************/

我加了一组类似的链接，

myParamSetup.linkBcntrld = CSL_EDMA3_LINKBCNTRLD_MAKE(hParamOut,0); 
myParamSetup.option = CSL_EDMA3_OPT_MAKE(CSL_EDMA3_ITCCH_DIS, \
CSL_EDMA3_TCCH_DIS, \
CSL_EDMA3_ITCINT_DIS, \
CSL_EDMA3_TCINT_EN,\
1, CSL_EDMA3_TCC_NORMAL,\
CSL_EDMA3_FIFOWIDTH_NONE, \
CSL_EDMA3_STATIC_EN, \
CSL_EDMA3_SYNC_A, \
CSL_EDMA3_ADDRMODE_INCR, \
CSL_EDMA3_ADDRMODE_INCR );
myParamSetup.srcAddr = (Uint32)srcBuff3;
myParamSetup.dstAddr = (Uint32)dstBuff3; 
if (CSL_edma3ParamSetup(hParamPong,&myParamSetup) != CSL_SOK) 
{
printf ("Error: EDMA Parameter Entry Setup failed\n"); 
return -1;
} ;

其他的没改，前两组数据可以搬进去， 我自己加的一组就搬不过去了，是不下面的程序要改哪些参数？

/* Interrupt enable (Bits 0-1) for the global region interrupts */
regionIntr.region = CSL_EDMA3_REGION_GLOBAL;
regionIntr.intr = 0x3;
regionIntr.intrh = 0x0000;
CSL_edma3HwControl(hModule,CSL_EDMA3_CMD_INTR_ENABLE,&regionIntr);

/* Trigger channel */
CSL_edma3HwChannelControl(hChannel,CSL_EDMA3_CMD_CHANNEL_SET,NULL);

regionIntr.region = CSL_EDMA3_REGION_GLOBAL;
regionIntr.intr = 0;
regionIntr.intrh = 0;

/* Poll on IPR bit 0 */
do {
CSL_edma3GetHwStatus(hModule,CSL_EDMA3_QUERY_INTRPEND,&regionIntr);
} while (!(regionIntr.intr & 0x1));

/* Clear the pending bit */
CSL_edma3HwControl(hModule,CSL_EDMA3_CMD_INTRPEND_CLEAR,&regionIntr);

/* Trigger Channel */
CSL_edma3HwChannelControl(hChannel,CSL_EDMA3_CMD_CHANNEL_SET,NULL);

/* Poll on IPR bit 2 */
do {
CSL_edma3GetHwStatus(hModule,CSL_EDMA3_QUERY_INTRPEND,&regionIntr);
} while (!(regionIntr.intr & 0x2));

/* Check transfer by comparing the source and destination buffers */
if(Verify_Transfer( 256, 1, 1, 0, 0, 0, 0, srcBuff1, dstBuff1, TRUE) == FALSE)
{
printf ("Error: Verification (Source1/Destination1) Failed\n");
return -1;
}
if(Verify_Transfer( 256, 1, 1, 0, 0, 0, 0, srcBuff2, dstBuff2, TRUE) == FALSE)
{
printf ("Error: Verification (Source2/Destination2) Failed\n");
return -1;
}

/* Close channel */
if (CSL_edma3ChannelClose(hChannel) != CSL_SOK)
{
printf("Error: EDMA Channel Close failed\n");
return -1;
}

/* Close EDMA module */
if (CSL_edma3Close(hModule) != CSL_SOK)
{
printf("Error: EDMA Module Close failed\n");
return -1;
};

直接copy过来看着有点乱  麻烦了

hParamOut 是我自己定义的

hParamOut = CSL_edma3GetParamHandle（hChannel,3,&status）;

EDMA有3个要素：

1. 触发方式，event 触发/手动触发/event chain式触发

2. PaRAM配置

3. 触发使能和提交

1.看你的代码你应该用的是手动触发，你要确认你新增的触发源是否和以前的有冲突；

2. 新增触发源对应的PaRAM选择是否正确

3. PaRAM的配置中，参数是否正确，例如使用全局地址

4. 判断传输完成的event 设置是否正确，例如TCC的配置是否有冲突

我新增的触发源和参数配置都是没问题的，TCC是否有冲突是怎么看的？后面这三个函数调用机制我不太懂，搬移2组他调用2次，我搬移三组是否就调用三次？

regionIntr.region = CSL_EDMA3_REGION_GLOBAL;
regionIntr.intr = 0x7;
regionIntr.intrh = 0x0000;
CSL_edma3HwControl(hModule,CSL_EDMA3_CMD_INTR_ENABLE,&regionIntr);

/* Trigger channel */
CSL_edma3HwChannelControl(hChannel,CSL_EDMA3_CMD_CHANNEL_SET,NULL);

CSL_edma3GetHwStatus(hModule,CSL_EDMA3_QUERY_INTRPEND,&regionIntr);

谢谢你 将的很清楚 不过我改了TCC还是跑不了  另外我不知道我的regionintr配置是否正确 麻烦你帮我看下。

int EdmaTrans ()
{
CSL_Edma3Handle hModule;
CSL_Edma3Obj edmaObj;
CSL_Edma3ParamHandle hParamPing;
CSL_Edma3ParamHandle hParamPong;
CSL_Edma3ParamHandle hParamOut;
CSL_Edma3ChannelObj chObj;
CSL_Edma3CmdIntr regionIntr;
CSL_Edma3ChannelHandle hChannel;
CSL_Edma3ParamSetup myParamSetup;
CSL_Edma3Context context;
CSL_Edma3ChannelAttr chAttr;
CSL_Status status;

int instNum;
unsigned char channelNum;

instNum = 1;
channelNum = 1;

/* Module initialization */
if (CSL_edma3Init(&context) != CSL_SOK)
{
printf ("Error: EDMA module initialization failed\n");
return -1;
}

/* Open the EDMA Module using the provided instance number */
hModule = CSL_edma3Open(&edmaObj, instNum, NULL, &status);
if ( (hModule == NULL) || (status != CSL_SOK))
{
printf ("Error: EDMA module open failed\n");
return -1;
}

/* Channel open */
chAttr.regionNum = CSL_EDMA3_REGION_GLOBAL;
chAttr.chaNum = channelNum;
hChannel = CSL_edma3ChannelOpen(&chObj, instNum, &chAttr, &status);
if ((hChannel == NULL) || (status != CSL_SOK))
{
printf ("Error: Unable to open EDMA Channel:%d\n", channelNum);
return -1;
}

if(!instNum)
{
/* For first EDMA instance there are only 2 TCs and 2 event queues
* Modify the channel default queue setup from 0 to 1
*/
if (CSL_edma3HwChannelSetupQue(hChannel,CSL_EDMA3_QUE_1) != CSL_SOK)
{
printf ("Error: EDMA channel setup queue failed\n");
return -1;
}
}
else
{
/* For EDMA instance 1 and 2 maximum of 4 TCs and 4 event queues are supported
* Change Channel Default queue setup from 0 to 3
*/
if (CSL_edma3HwChannelSetupQue(hChannel,CSL_EDMA3_QUE_3) != CSL_SOK)
{
printf ("Error: EDMA channel setup queue failed\n");
return -1;
}
}

CSL_edma3MapDMAChannelToParamBlock (hModule, channelNum, 2);

hParamPing = CSL_edma3GetParamHandle(hChannel, 2, &status);

/* Obtain a handle to parameter set 1 */
hParamPong = CSL_edma3GetParamHandle(hChannel, 1, &status);

hParamOut = CSL_edma3GetParamHandle(hChannel,3,&status);

/* Setup the parameter entry parameters (Ping buffer) */
myParamSetup.option = CSL_EDMA3_OPT_MAKE(CSL_EDMA3_ITCCH_DIS,
CSL_EDMA3_TCCH_DIS,
CSL_EDMA3_ITCINT_DIS,
CSL_EDMA3_TCINT_EN,
0, 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)srcBuff1;
myParamSetup.aCntbCnt = CSL_EDMA3_CNT_MAKE(15,1);
myParamSetup.dstAddr = (Uint32) dstBuff1;
myParamSetup.srcDstBidx = CSL_EDMA3_BIDX_MAKE(0,0);
myParamSetup.linkBcntrld= CSL_EDMA3_LINKBCNTRLD_MAKE(hParamPong,0);
myParamSetup.srcDstCidx = CSL_EDMA3_CIDX_MAKE(0,0);
myParamSetup.cCnt = 1;

/* Ping setup */
if (CSL_edma3ParamSetup(hParamPing,&myParamSetup) != CSL_SOK)
{
printf ("Error: EDMA Parameter Entry Setup failed\n");
return -1;
}

/* Pong setup */

myParamSetup.option = CSL_EDMA3_OPT_MAKE(CSL_EDMA3_ITCCH_DIS,
CSL_EDMA3_TCCH_DIS,
CSL_EDMA3_ITCINT_DIS,
CSL_EDMA3_TCINT_EN,
1, 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)srcBuff2;
myParamSetup.aCntbCnt = CSL_EDMA3_CNT_MAKE(15,1);
myParamSetup.dstAddr = (Uint32)dstBuff2;
myParamSetup.srcDstBidx = CSL_EDMA3_BIDX_MAKE(1,0);
myParamSetup.linkBcntrld = CSL_EDMA3_LINKBCNTRLD_MAKE(hParamPing,0);
myParamSetup.srcDstCidx = CSL_EDMA3_CIDX_MAKE(0,0);
myParamSetup.cCnt = 1;

if (CSL_edma3ParamSetup(hParamPong,&myParamSetup) != CSL_SOK)
{
printf ("Error: EDMA Parameter Entry Setup failed\n");
return -1;
}

myParamSetup.option = CSL_EDMA3_OPT_MAKE(CSL_EDMA3_ITCCH_DIS,
CSL_EDMA3_TCCH_DIS,
CSL_EDMA3_ITCINT_DIS,
CSL_EDMA3_TCINT_EN,
2, 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)srcBuff3;
myParamSetup.dstAddr = (Uint32) dstBuff3;
myParamSetup.linkBcntrld = CSL_EDMA3_LINKBCNTRLD_MAKE(hParamOut,0);

CSL_edma3ParamSetup(hParamOut,&myParamSetup);

regionIntr.region = CSL_EDMA3_REGION_GLOBAL;
regionIntr.intr = 0x7;
regionIntr.intrh = 0x0000;
CSL_edma3HwControl(hModule,CSL_EDMA3_CMD_INTR_ENABLE,&regionIntr);

CSL_edma3HwChannelControl(hChannel,CSL_EDMA3_CMD_CHANNEL_SET,NULL);

CSL_edma3GetHwStatus(hModule,CSL_EDMA3_QUERY_INTRPEND,&regionIntr);

/* Interrupt enable (Bits 0-1) for the global region interrupts */
regionIntr.region = CSL_EDMA3_REGION_GLOBAL;
regionIntr.intr = 0x3;
regionIntr.intrh = 0x0000;
CSL_edma3HwControl(hModule,CSL_EDMA3_CMD_INTR_ENABLE,&regionIntr);

/* Trigger channel */
CSL_edma3HwChannelControl(hChannel,CSL_EDMA3_CMD_CHANNEL_SET,NULL);

regionIntr.region = CSL_EDMA3_REGION_GLOBAL;
regionIntr.intr = 0;
regionIntr.intrh = 0;

CSL_edma3GetHwStatus(hModule,CSL_EDMA3_QUERY_INTRPEND,&regionIntr);

/* Clear the pending bit */
CSL_edma3HwControl(hModule,CSL_EDMA3_CMD_INTRPEND_CLEAR,&regionIntr);

/* Trigger Channel */
CSL_edma3HwChannelControl(hChannel,CSL_EDMA3_CMD_CHANNEL_SET,NULL);

/* Poll on IPR bit 2 */

CSL_edma3GetHwStatus(hModule,CSL_EDMA3_QUERY_INTRPEND,&regionIntr);

if (CSL_edma3ChannelClose(hChannel) != CSL_SOK)
{
printf("Error: EDMA Channel Close failed\n");
return -1;
}

if (CSL_edma3Close(hModule) != CSL_SOK)
{
printf("Error: EDMA Module Close failed\n");
return -1;
}

return 0;
}

建议不要直接增加代码，你先理解清楚样例中的实现是如何对EDMA进行操作的，之后再按照你的需求进行修改。