LVDS传输用户自定义数据

user4913911

Other Parts Discussed in Thread: IWR1843BOOST

您好，我想通过LVDS传输自定义的数据，在程序中做了如下操作：

if (gMrrDSSMCB.lvdsStreamCfg.isSwEnabled == 1)
                {
                    if(gMrrDSSMCB.lvdsStream.swSessionHandle != NULL)
                    {
                        MmwDemo_LVDSStreamDeleteSwSession(gMrrDSSMCB.lvdsStream.swSessionHandle);
                    }

                    /* Configure SW session for this subframe */
                    if (MmwDemo_LVDSStreamSwConfig(dataPathObj) < 0)
                    {
                        System_printf("Failed LVDS stream SW configuration\n");
                        return;
                    }
                    /* Populate user data header that will be streamed out*/
                    gMrrDSSMCB.lvdsStream.userDataHeader.frameNum = gMrrDSSMCB.stats.frameStartEvt;
                    gMrrDSSMCB.lvdsStream.userDataHeader.detObjNum = dataPathObj->numDetObj;
                    gMrrDSSMCB.lvdsStream.userDataHeader.reserved = 0xABCD;

                    if(CBUFF_activateSession (gMrrDSSMCB.lvdsStream.swSessionHandle, &retVal) < 0)
                    {
                        System_printf("Failed to activate CBUFF session for LVDS stream SW. errCode=%d\n",retVal);
                        return;
                    }
                }

在调试过程中，一直会报如下错误：

[C674X_0] Error: MmwDemo_LVDSStream_config unable to create the CBUFF SW session with [Error=-3306]
Failed LVDS stream SW configuration

这个错误代码是指在给SW Session分配会话的时候出错，而且不论我是否启动HW Session都会提示该错误

4 年多前

0 user4913911 4 年多前

Prodigy 60 points

MmwDemo_LVDSStreamSwConfig 定义如下：
int32_t MmwDemo_LVDSStreamSwConfig (MmwDemo_DSS_DataPathObj *datPathObj)
{
CBUFF_SessionCfg sessionCfg;
MmwDemo_LVDSStream_MCB_t* streamMcb = &gMrrDSSMCB.lvdsStream;
int32_t errCode;
int32_t retVal = MINUS_ONE;

memset ((void*)&sessionCfg, 0, sizeof(CBUFF_SessionCfg));

/* Populate the configuration: */
sessionCfg.executionMode = CBUFF_SessionExecuteMode_SW;
sessionCfg.edmaHandle = gMrrDSSMCB.dataPathObj[0].edmaHandle[MMW_LVDS_STREAM_EDMA_INSTANCE];
sessionCfg.allocateEDMAChannelFxn = MmwDemo_LVDSStream_EDMAAllocateCBUFFSwChannel;
sessionCfg.freeEDMAChannelFxn = MmwDemo_LVDSStream_EDMAFreeCBUFFSwChannel;
sessionCfg.frameDoneCallbackFxn = MmwDemo_LVDSStream_SwTriggerFrameDone;
sessionCfg.dataType = CBUFF_DataType_COMPLEX;
sessionCfg.u.swCfg.userBufferInfo[0].size = HSIHeader_toCBUFFUnits(sizeof(MmwDemo_LVDSUserDataHeader_t));
sessionCfg.u.swCfg.userBufferInfo[0].address = (uint32_t)&(streamMcb->userDataHeader);
if(datPathObj->numDetObj != 0)
{
sessionCfg.u.swCfg.userBufferInfo[1].size = HSIHeader_toCBUFFUnits((datPathObj->numDetObj) * sizeof(MmwDemo_detectedObj));
sessionCfg.u.swCfg.userBufferInfo[1].address = (uint32_t)datPathObj->detObj2D;
}
else
{
sessionCfg.u.swCfg.userBufferInfo[1].size = 0;
sessionCfg.u.swCfg.userBufferInfo[1].address = 0;
}

/* Do we need to enable the header? */
if(gMrrDSSMCB.lvdsStreamCfg.isHeaderEnabled)
{
/* Create the HSI Header to be used for the HW Session: */
if (HSIHeader_createHeader (&sessionCfg, true, &(streamMcb->swSessionHSIHeader), &errCode) < 0)
{
/* Error: Unable to create the HSI Header; report the error */
System_printf("Error: MmwDemo_LVDSStream_config unable to create HW HSI header with [Error=%d]\n", errCode);
goto exit;
}

/* Setup the header in the CBUFF session configuration: */
sessionCfg.header.size = HSIHeader_getHeaderSize(&streamMcb->swSessionHSIHeader);
sessionCfg.header.address = (uint32_t)&(streamMcb->swSessionHSIHeader);
}

/* Create the SW Session. */
streamMcb->swSessionHandle = CBUFF_createSession (gMrrDSSMCB.lvdsStream.cbuffHandle, &sessionCfg, &errCode);
System_printf("infor:[infor=%d]\n", 1);

if (streamMcb->swSessionHandle == NULL)
{
/* Error: Unable to create the CBUFF SW session */
System_printf("Error: MmwDemo_LVDSStream_config unable to create the CBUFF SW session with [Error=%d]\n", errCode);
goto exit;
}

/* Control comes here implies that the LVDS Stream has been configured successfully */
retVal = 0;

exit:
return retVal;
}