Edma3问题咨询

请单步跟进去debug一下看在哪里出错了？

通道申请错误是在C:\ti\edma3_lld_02_11_05_02\examples\CSL2_DAT_DEMO\src\csl2_dat.c下的EDMA3_DRV_requestChannel（）这个函数，现在只能申请一个QDMA通道，申请第二个QDMA通道时出错。
for(i=0; i < DAT_EDMA3LLD_numAllocatedChannels; i++) {
chaNum = EDMA3_DRV_QDMA_CHANNEL_ANY;
tccNum = EDMA3_DRV_TCC_ANY;

/*
* EDMA3 DRV call to request for channel and tcc resources
*/
if (EDMA3_DRV_SOK != EDMA3_DRV_requestChannel(DAT_EDMA3LLD_hEdma,
&chaNum, &tccNum,
(EDMA3_RM_EventQueue)DAT_EDMA3LLD_HW_EVT_QUEUE_ID,
NULL /*(EDMA3_RM_TccCallback)&_transferComplete*/, NULL)) {

/*
* Error requesting channels, Clean up all channels requested so far
*/
for(j = i-1; j >=0; j--) {
EDMA3_DRV_freeChannel(DAT_EDMA3LLD_hEdma,
DAT_allocatedChannels[j].paramNo);
DAT_allocatedChannels[i].paramNo = DAT_INVALID_ID;
DAT_allocatedChannels[i].tccNo = DAT_INVALID_ID;
}

if (EDMA3_DRV_SOK != EDMA3_DRV_close(DAT_EDMA3LLD_hEdma, NULL)){
printf("Error closing DRV instance \n");
}
else {
if (EDMA3_DRV_SOK != EDMA3_DRV_delete(DAT_EDMA3LLD_HW_INST_ID,
NULL)){
printf("Error deleting EDMA3 DRV\n");
}
}

DAT_EDMA3LLD_openFlag = 0;
return 0;
}
代码中DAT_EDMA3LLD_numAllocatedChannels为4，在第二次for循环时 EDMA3_DRV_requestChannel（）返回-133，QDMA申请错误，程序进入if循环清除通道和错误位。

现在想确定一下EDMA3_LLD库中的通道申请函数EDMA3_DRV_requestChannel（）能不能申请2个及以上的QDMA通道，我现在测试的是QDMA申请第二个申请不成功，DMA通道在申请第三个时不成功。