C6455的EDMA3传输问题

在C6455的“TMS320C645x DSP Enhanced DMA (EDMA3) Controller User's Guide”的最后一个例程把一个16k大数据打断成16个1k的小数据来传输，为什么只能传输8K的数据，请各位前辈帮我看看程序：

#include <stdio.h>
#include <csl_edma3.h>
#include <soc.h>

/* Number of bytes to transfer */
#define NOF_BYTES_XFR 16384
//#define srcDDR (0xE0000000u)
//Uint16 *srcBuff1=(Uint16*)srcDDR;

/* Globals */
Uint16 srcBuff1[NOF_BYTES_XFR];
Uint16 dstBuff1[NOF_BYTES_XFR];
Uint32 passStatus = 1;

/* Forward declaration */
void edma_self_chaining (void);

/*
* =============================================================================
* @func main
*
* @desc
* This is the main routine for the file.
*
* =============================================================================
*/
void main(void)
{ /* Invoke example */
edma_self_chaining ();
return;}

void edma_self_chaining (void)
{
CSL_Edma3Handle hModule;
CSL_Edma3HwSetup hwSetup;
CSL_Edma3Obj edmaObj;
CSL_Edma3ParamHandle hParamBasic;
CSL_Edma3ChannelObj chObj;
CSL_Edma3CmdIntr regionIntr;
CSL_Edma3CmdDrae regionAccess;
CSL_Edma3ChannelHandle hChannel;
CSL_Edma3ParamSetup myParamSetup;
CSL_Edma3Context context;
CSL_Edma3ChannelAttr chAttr;
CSL_Status status;
CSL_Edma3HwDmaChannelSetup dmahwSetup;
volatile Uint32 loopIndex;
Uint32 numXfr;

printf ("Running Edma Example\n");
/* Module Initialization */
status = CSL_edma3Init(&context);
if (status != CSL_SOK) {
printf ("Edma module initialization failed\n"); return;
}
/* Module level open */
hModule = CSL_edma3Open(&edmaObj,CSL_EDMA3,NULL,&status);
if ( (hModule == NULL) || (status != CSL_SOK)) {
printf ("Edma module open failed\n"); return;
}
/* Module setup */
dmahwSetup.paramNum = 0;
dmahwSetup.que = CSL_EDMA3_QUE_0;
hwSetup.dmaChaSetup = &dmahwSetup;
hwSetup.qdmaChaSetup = NULL;
status = CSL_edma3HwSetup(hModule,&hwSetup);
if (status != CSL_SOK) {
printf ("Hardware setup failed\n");
CSL_edma3Close (hModule);
return;
} /* DRAE enable(Bits 0-15) for the shadow region 5 */
regionAccess.region = CSL_EDMA3_REGION_5 ;
regionAccess.drae = 0xFFFFFFFF ;
regionAccess.draeh = 0x00000000 ;
status = CSL_edma3HwControl(hModule,CSL_EDMA3_CMD_DMAREGION_ENABLE, \
&regionAccess); if (status != CSL_SOK) {
printf ("Edma region enable command failed\n");
return;
}

/* Channel 0 open in context of shadow region 5 */
chAttr.regionNum = CSL_EDMA3_REGION_5;
chAttr.chaNum = CSL_EDMA3_CHA_DSP_EVT;
hChannel = CSL_edma3ChannelOpen(&chObj, CSL_EDMA3, &chAttr, &status); if ((hChannel == NULL) || (status != CSL_SOK)) {
printf ("Edma channel open failed\n");
return;
}
/* Obtain a handle to parameter set 0 */
hParamBasic = CSL_edma3GetParamHandle(hChannel,0,&status);
if (hParamBasic == NULL) {
printf ("Edma get param handle for param entry 0 failed\n"); return;
}
/* ACNT value */
numXfr = NOF_BYTES_XFR/16;

/* Setup the first param set */
myParamSetup.option = CSL_EDMA3_OPT_MAKE (CSL_EDMA3_ITCCH_EN, \
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(numXfr,16); myParamSetup.dstAddr = (Uint32)dstBuff1; myParamSetup.srcDstBidx = CSL_EDMA3_BIDX_MAKE(numXfr, numXfr); myParamSetup.linkBcntrld = CSL_EDMA3_LINKBCNTRLD_MAKE(CSL_EDMA3_LINK_NULL,0); myParamSetup.srcDstCidx = CSL_EDMA3_CIDX_MAKE(1, 1); myParamSetup.cCnt = 1;
status = CSL_edma3ParamSetup(hParamBasic, &myParamSetup);
if (status != CSL_SOK) {
printf("Edma parameter entry setup is failed\n");
return;
}
/* Enable channel */
status = CSL_edma3HwChannelControl(hChannel,CSL_EDMA3_CMD_CHANNEL_ENABLE, \
NULL);
if (status != CSL_SOK) {
printf("Edma channel enable command is failed\n");
return;
}
/* Initialize data */
for (loopIndex = 0; loopIndex < NOF_BYTES_XFR; loopIndex++) {
srcBuff1[loopIndex] = loopIndex;
dstBuff1[loopIndex] = 0;
}
/* Manually trigger the channel */
status = CSL_edma3HwChannelControl(hChannel,CSL_EDMA3_CMD_CHANNEL_SET,NULL);
if (status != CSL_SOK) {
printf("Edma channel set command is failed\n");
return;
}
regionIntr.region = CSL_EDMA3_REGION_5;
regionIntr.intr = 0;
regionIntr.intrh = 0;
do {
/* Poll on interrupt bit 0 */
CSL_edma3GetHwStatus(hModule,CSL_EDMA3_QUERY_INTRPEND,&regionIntr);
} while (!(regionIntr.intr & 0x1));

/* Clear interrupt bit 0 */
status = CSL_edma3HwControl(hModule,CSL_EDMA3_CMD_INTRPEND_CLEAR, \
&regionIntr); if (status != CSL_SOK) {
printf("Edma clear interrupt bit 0 command is failed\n");
return;
}
/* Check transfer */
if(Verify_Transfer(NOF_BYTES_XFR, 1, 1, 0, 0, 0, 0, srcBuff1, dstBuff1, \
TRUE) == FALSE) {
passStatus = 0; }
if (passStatus == 1) printf ("<<EXAMPLE PASSED>>: Edma Self Chaining Transfer Passed\n");
else {
printf ("<<EXAMPLE FAILED>>: Edma Self Chaining Transfer Failed\n");
return;
} /* Close channel */
status = CSL_edma3ChannelClose(hChannel);
if (status != CSL_SOK) {
printf("Edma channel close failed\n");
return;
}
/* Close edma module */
status = CSL_edma3Close(hModule);
if (status != CSL_SOK) {
printf("Edma module close failed\n");
return;
}
printf ("=============================================================\n");
return;
}

不甚感激

Eason Wang：

Move to the right forum

Andy Yin1：

例程测试能pass么，例程应该是可以搬移16KB的。