[AutoSar]BSW_Com07 CAN报文接收流程的函数调用-编程知识

关键词

嵌入式、C语言、autosar、OS、BSW

平台说明

项目	Value
OS	autosar OS
autosar厂商	vector ，
芯片厂商	TI 英飞凌
编程语言	C，C++
编译器	HighTec (GCC)
autosar版本	4.3.1

在这里插入图片描述
>>>>>回到总目录<<<<<<

一、背景

介绍了一个信号如何从底层传输到应用层的函数调用。note：该报文类型为应用报文
处理方式为轮询模式

二、顺序总览

在这里插入图片描述
1.因为CAN_RX_PROCESSING is set to POLLING，中断模式的情况后续更新.所以由BSW 轮询调度Can_MainFunction_Read（）。Can_MainFunction_Read（）会获取can 控制器中的寄存器数据。它会查询当前所有MO或接收报文邮箱是否有报文被成功接收，如果有，则调用
CanIf_RxIndication 函数来向上层（PDUR）通知有报文被接收。一直通知到COM层。
2.到了COM之后进行解包，APP 通过RTE_read_XX–>Com_ReceiveSignal（）从COM中获取数据。

三、函数说明

3.1 Com_RxIndication（）

对数据进行解包。在这里插入图片描述

FUNC(void, COM_CODE) Com_RxIndication(PduIdType RxPduId, P2CONST(PduInfoType, AUTOMATIC, COM_APPL_DATA) PduInfoPtr)
{
(void) Com_RxIndication_Processing((Com_RxPduInfoIterType) RxPduId, PduInfoPtr);
}

FUNC(boolean, COM_CODE) Com_RxIndication_Processing(Com_RxPduInfoIterType rxPduId, P2CONST(PduInfoType, AUTOMATIC, COM_APPL_DATA) PduInfoPtr)
{Com_RxIndication_ProcessPdu(rxPduId, &PduInfoLocal);      /* SBSW_COM_FCTCALL_WITH_P2CONST */
}

COM_LOCAL_INLINE FUNC(void, COM_CODE) Com_RxIndication_ProcessPdu(Com_RxPduInfoIterType comRxPduInfoIdx, P2CONST(PduInfoType, AUTOMATIC, COM_APPL_DATA) PduInfoPtr)
{
# if (COM_EXISTS_DEFERRED_SIGNALPROCESSINGOFRXPDUINFO == STD_ON)/* #10 If the passed Rx ComIPdu is handled deferred */if(Com_IsHandleRxPduDeferredUsedOfRxPduInfo(comRxPduInfoIdx)) /* COV_COM_FEATURE_ALWAYS_TRUE_TX */{SchM_Enter_Com_COM_EXCLUSIVE_AREA_RX();
#  if (COM_RXDEFPDUBUFFERUSEDOFRXPDUINFO == STD_ON)switch (Com_GetTypeOfRxPduInfo(comRxPduInfoIdx)){
#   if(COM_EXISTS_NORMAL_TYPEOFRXPDUINFO == STD_ON)case COM_NORMAL_TYPEOFRXPDUINFO:/* #20 If the passed Rx ComIPdu is not a TP Pdu and no NULL_PTR, copy the passed Sdu data to the deferred Pdu buffer */if(PduInfoPtr->SduDataPtr != NULL_PTR){if(Com_IsRxDefPduBufferUsedOfRxPduInfo(comRxPduInfoIdx))      /* COV_COM_CSL03_ISUSED_OPTIONAL_INDIRECTION */{Com_RxDefPduBufferLengthOfRxPduInfoType numberOfBytes =((Com_GetRxDefPduBufferLengthOfRxPduInfo(comRxPduInfoIdx)) >PduInfoPtr->SduLength) ? (Com_RxDefPduBufferLengthOfRxPduInfoType) (PduInfoPtr->SduLength) : Com_GetRxDefPduBufferLengthOfRxPduInfo(comRxPduInfoIdx);VStdMemCpyRamToRam(Com_GetAddrRxDefPduBuffer(Com_GetRxDefPduBufferStartIdxOfRxPduInfo(comRxPduInfoIdx)), (P2CONST(uint8, AUTOMATIC, COM_APPL_DATA)) PduInfoPtr->SduDataPtr, numberOfBytes); /* PRQA S 0315 */ /* MD_MSR_VStdLibCopy */ /* SBSW_COM_MEM_CPY_2RAM */}}break;
#   endif
#   if(COM_RXTPINFOUSEDOFRXPDUINFO == STD_ON)case COM_TP_TYPEOFRXPDUINFO:break;
#   endifdefault: /* COV_COM_MISRA */break;}
#  endif
#  if (COM_RXDEFERREDEVENTCACHE == STD_ON)/* #30 If the passed ComIPdu is not cached yet, add the Rx ComIPdu to the deferred event cache */if(Com_GetHandleRxPduDeferred(Com_GetHandleRxPduDeferredIdxOfRxPduInfo(comRxPduInfoIdx)) == 0u)     /* COV_COM_RXDEFERRED_PROCESSING */{Com_RxIndication_CacheDeferredEvent(comRxPduInfoIdx);}
#  endif/* #40 Store the passed Sdu length in the handle deferred buffer */Com_SetHandleRxPduDeferred(Com_GetHandleRxPduDeferredIdxOfRxPduInfo(comRxPduInfoIdx), (PduInfoPtr->SduLength + 1u));        /* SBSW_COM_CSL03 */
#  if(COM_GWEVENTCACHE == STD_ON)Com_RxIndication_CacheDeferredDescriptionGwEvent(comRxPduInfoIdx);
#  endifSchM_Exit_Com_COM_EXCLUSIVE_AREA_RX();}
# endif
# if ((COM_EXISTS_DEFERRED_SIGNALPROCESSINGOFRXPDUINFO == STD_ON) && (COM_EXISTS_IMMEDIATE_SIGNALPROCESSINGOFRXPDUINFO == STD_ON))else
# endif
# if (COM_EXISTS_IMMEDIATE_SIGNALPROCESSINGOFRXPDUINFO == STD_ON)/* #50 Otherwise process the Rx ComIPdu immediate */{FctPtrCacheStrct immediateFctPtrCacheStrct;#  if (COM_RXIMMEDIATEFCTPTRCACHE == STD_ON)uint32 fctPtrCache[COM_RXIMMEDIATEFCTPTRCACHESIZE];immediateFctPtrCacheStrct.ptrToCache = fctPtrCache;immediateFctPtrCacheStrct.cacheSize = COM_RXIMMEDIATEFCTPTRCACHESIZE;immediateFctPtrCacheStrct.cacheIndex = 0;
#  elseimmediateFctPtrCacheStrct.ptrToCache = NULL_PTR;immediateFctPtrCacheStrct.cacheSize = 0;immediateFctPtrCacheStrct.cacheIndex = 0;
#  endifSchM_Enter_Com_COM_EXCLUSIVE_AREA_RX();
#  if (COM_RXSIGINFOENDIDXOFRXPDUINFO == STD_ON)/* #60 Do Rx ComSignal processing */Com_RxProcessing_RxPduSigEvent(comRxPduInfoIdx, PduInfoPtr, &immediateFctPtrCacheStrct);    /* SBSW_COM_FCTCALL_WITH_P2CONST_AND_FCTPTR_CACHE_PTR_1 */
#  endif
#  if (COM_RXSIGGRPINFOINDENDIDXOFRXPDUINFO == STD_ON)/* #70 Do Rx ComSignalGroup processing */Com_RxProcessing_RxPduSigGrpEvent(comRxPduInfoIdx, PduInfoPtr, &immediateFctPtrCacheStrct); /* SBSW_COM_FCTCALL_WITH_P2CONST_AND_FCTPTR_CACHE_PTR_1 */
#  endif
#  if (COM_GWTXPDUDESCRIPTIONINFOUSEDOFRXPDUINFO == STD_ON)/* #75 If rxPdu has any configured GwDescriptions, do gateway description processing */if(Com_IsGwTxPduDescriptionInfoUsedOfRxPduInfo(comRxPduInfoIdx))    /* COV_COM_FEATURE_ALWAYS_TRUE_TX */{SchM_Enter_Com_COM_EXCLUSIVE_AREA_TX();Com_GwDescriptionEvent(comRxPduInfoIdx,      /* SBSW_COM_FCTCALL_WITH_P2CONST */PduInfoPtr, FALSE);SchM_Exit_Com_COM_EXCLUSIVE_AREA_TX();}
#  endif#  if (COM_RXTOUTINFOUSEDOFRXPDUINFO == STD_ON)/* #80 If the passed Rx ComIPdu has a timeout, remove the timeout occurred flag */if(Com_IsRxTOutInfoUsedOfRxPduInfo(comRxPduInfoIdx))        /* COV_COM_FEATURE_ALWAYS_TRUE_TX */{Com_LMgt_RemoveOccurredFlag(Com_GetRxTOutInfoIdxOfRxPduInfo(comRxPduInfoIdx));    /* SBSW_COM_CSL02_CSL03 */}
#  endifSchM_Exit_Com_COM_EXCLUSIVE_AREA_RX();#  if (COM_RXIMMEDIATEFCTPTRCACHE == STD_ON)/* #90 Call all cached notification or invalid notifications and clear the immediate function pointer cache */Com_ProcessRxFctPtrCache(&immediateFctPtrCacheStrct);       /* SBSW_COM_FCTPTR_CACHE_PTR_1 */
#  endifCOM_DUMMY_STATEMENT(immediateFctPtrCacheStrct);     /* PRQA S 1338, 2983, 3112 */ /* MD_MSR_DummyStmt */ /* lint -e{438} */}     /* Immediate signal processing */
# endif
}       /* PRQA S 6050 */ /* MD_MSR_STCAL */
#endif
}