CAN/CANFD诊断：CDD诊断

CAN测试诊断方式

output
TP链接及相关API
CDD文件及相关API（本文内容）

CDD配置

CDD Capl接口

发送

诊断功能寻址发送：long diagSendFunctional( diagRequest request)

诊断物理寻址发送：long diagSendRequest (diagRequest obj)

诊断发送判断：long TestWaitForDiagRequestSent (diagRequest request, dword timeout)

诊断请求数据获取：long diagGetPrimitiveData (diagRequest obj, byte* buffer, DWORD buffersize)

诊断响应抑制位设置：diagSetSuppressResp (diagRequest req, long flag)

诊断发送数据设置：long diagSetPrimitiveData (diagRequest obj, byte* buffer, DWORD buffersize)

接收

诊断响应抑制位获取：long diagGetSuppressResp (diagRequest req)

诊断响应数据长度获取：long diagGetRespPrimitiveSize( diagRequest request)

诊断响应判断：long TestWaitForDiagResponse (diagRequest request, dword timeout)

诊断响应数据按字节获取：long diagGetRespPrimitiveByte( diagRequest request, DWORD bytePos)

诊断响应数据获取：long diagGetPrimitiveData (diagResponse obj, byte* buffer, DWORD buffersize)

CDD常用功能

/// <GeneralFunction>
void hexToString(byte HexData[],dword DataLength,char HexDataString[])
{
  int i;
  char strByte[4];
  
   
  strncpy(HexDataString,"",elcount(HexDataString));
  for(i=0;i<DataLength;i++)
  {
    if(HexData[i] <= 0x0F)
      strncat(HexDataString,"0",elcount(HexDataString));//小于0xF，前面补0
    ltoa(HexData[i],strByte,16);//字节->字符
    strncat(HexDataString,strByte,elcount(HexDataString));
    strncat(HexDataString," ",elcount(HexDataString));//空格分隔符
  }
}

long Flexray_Read_History(byte DiagIDType)
{//用于检查读取的DIDValue是否是合理的
  int i,ret;
  byte DIDTemp[2];
  word DID;
  //清空接收数组，接收标志
  for(i=0;i<255;i++)
  {
    DID_Read[i] = 0;
  }
  strncpy(DID_Print,"",elcount(DID_Print));
  
  //初始化参数
  DiagInitialize(ReadDataByIdentifier_);
  
  //确定SID
  if(@Test::ECU_Index==1)//ACU
    DID=0X46F1;  
  if(@Test::ECU_Index==2)//BBM
    DID=0X46F1;
  if(@Test::ECU_Index==3)//BGM
    DID=0X46F1;
  if(@Test::ECU_Index==4)//CDC
    DID=0X46F1;
  if(@Test::ECU_Index==5)//SRS
    DID=0X46F1;
  if(@Test::ECU_Index==6)//VDDM
    DID=0X46F1;
  
  //数据组包
  DIDTemp[0]=(DID>>8) & 0xFF;
  DIDTemp[1]=DID&0xFF;
  diagSetParameterRaw(ReadDataByIdentifier_,"dataIdentifier",DIDTemp,2);

  //将输入数据发送出去，诊断API函数读取接收数据，不对数据做任何处理
  testStep("","发送诊断命令22_%x_%x读取历史缓存DID",DIDTemp[1],DIDTemp[0]);
  diagSendData(ReadDataByIdentifier_,DiagIDType);
  
  //判断响应
  ret=diagGetLastResponseCode(ReadDataByIdentifier_);
  if(ret!=-1)
  {
    testStepPass("","否定响应：历史缓存读取失败！");
    return 0;
  }
  else
  {
    testStepPass("","肯定响应：历史缓存读取成功！");
  }
  
  //接收诊断数据并将DID依次存放到byte数组里面
  DiagRxBufLength=diagGetRespPrimitiveSize(ReadDataByIdentifier_);//获取接收报文的长度
  for(i=0;i<DiagRxBufLength;i++)
  {
     DID_Read[i]=DiagGetRespPrimitiveByte(ReadDataByIdentifier_,i);//获取接收报文的值
  }
  //打印数据
  hexToString(DID_Read,DiagRxBufLength,DID_Print);
  testStep("","ECU响应数据：%s",DID_Print);
  return ret;
}