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CAPL 封装了的SeedKey解锁函数，高复用性

news 来源：原创 2024/5/10 6:38:27

🍅 我是蚂蚁小兵，专注于车载诊断领域，尤其擅长于对CANoe工具的使用
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📘前言

🍅 诊断测试用到27服务，解锁，一般都i有好多个解锁等级（subfunction ），甚至不同的解锁等级的种子字节长度还不一致，今天我就整合划一，封装了一个高复用性的函数
🍅 演示软硬件环境 Windows11 x64 ； CANoe 11 SP2 x64

📙 代码

🍅 SeedKey解锁函数

函数参数模型：void cal_seedKey(byte gSecurityLevel)
就一个输入参数，解锁等级，不用你去定义 diagrequest；也不需要关注seed和key有多少字节

void cal_seedKey(byte gSecurityLevel)  
{
    diagrequest *DiagSeedKey ;
    long i, resSize,ret; 
    byte gSeedArray[255];
    int gSeedArraySize ;
    char gVariant[200]    = "Variant1";
    char gOption[200]     = "option";
    byte gKeyArray[255];
    int  gMaxKeyArraySize = 255;
    dword gActualSize     = 0;

     //发送 0x27 xx
    diagResize(DiagSeedKey,2);
    DiagSetPrimitiveByte(DiagSeedKey,0,0x27);
    DiagSetPrimitiveByte(DiagSeedKey,1,gSecurityLevel);
    
    if(Send_DiagRequest_diag(DiagSeedKey) == 1)//上一步骤是pass
    {

     resSize = DiagGetRespPrimitiveSize(DiagSeedKey);
     gSeedArraySize =  resSize - 2 ; //去除诊断头部
      
    	for(i = 0; i < gSeedArraySize; i ++) 
    	{
    		gSeedArray[i] = DiagGetRespPrimitiveByte(DiagSeedKey, i+2);  
        write("gSeedArray[%d]:0x%x",i,gSeedArray[i]);
      }
      
      //计算 Key      
      ret =  DiagGenerateKeyFromSeed (gSeedArray, gSeedArraySize , gSecurityLevel, gVariant, gOption, gKeyArray, gMaxKeyArraySize, gActualSize);   //generate key           
      if(ret==0)
      {        
           //发送 0x27 xx+1
        diagResize(DiagSeedKey,2+gActualSize);
        DiagSetPrimitiveByte(DiagSeedKey,0,0x27);
        DiagSetPrimitiveByte(DiagSeedKey,1,gSecurityLevel + 1);
         
          for(i = 0; i < gActualSize; i ++) //去除诊断头部
      	{
      		   DiagSetPrimitiveByte(DiagSeedKey,i+2,gKeyArray[i]); 
        }
         Send_DiagRequest_diag(DiagSeedKey);
      }
      
      else
      {
        TestStepFail("can't generate key."); 
      }    
    } 
}
//发送诊断，并判断是否是正响应
long Send_DiagRequest_diag(diagrequest *DiagReq)
{

    char tempStr[100];
    long retVal,lastCode;
  // 下面两个参数应该是个全局变量
    const long SendTimeout = 100;//ms
    const long ReceiveTimeout = 1000;//ms
    
    TestReportWriteDiagObject(DiagReq); //打印发送诊断
    DiagSendRequest(DiagReq);
 
    if (TestWaitForDiagRequestSent(DiagReq, SendTimeout)== 1)
    {
         //等待诊断响应
      retVal = TestWaitForDiagResponse( DiagReq, ReceiveTimeout); 
      TestReportWriteDiagResponse(DiagReq); //打印诊断接收
      
      if(retVal == 1) // 有响应
      {
        retVal = DiagGetLastResponseCode(DiagReq);
        if(retVal == -1)//有正响应
        {
           TestStepPass("Positival response received, as expected."); 
        }
        else
        {
           TestStepFail("Expected Positival response, But Not.");
           return 0 ;
        }       
      }
      
      else        
      {
        TestStepFail("Expected Positival response, But Not."); 
        return 0 ;
      }
    }     
 else
  {
    TestStepFail("Request could not be sent!");
    return 0 ;
  } 
  
  return 1;
}

🍅 测试用例

测试用例：

testcase TC_015()
{ 
    diagRequest  DefaultSession_Start  req_DefaultSession_Start;                  //1001              
    diagRequest  ExtendedDiagnosticSession_Start  req_ExtendedSession_Start;      //1003
    diagSetTarget(ECU_Name);

    Send_DiagRequest_diag(req_DefaultSession_Start);
    Send_DiagRequest_diag(req_ExtendedSession_Start);
    cal_seedKey(0x01);

    Send_DiagRequest_diag(req_DefaultSession_Start);
    Send_DiagRequest_diag(req_ExtendedSession_Start);
    cal_seedKey(0x07);
  
}

xml 脚本

<testmodule title="诊断函数测试" version="1.1">
	<externalref type="url" title="CSDN蚂蚁小兵">
      https://blog.csdn.net/qq_34414530
   </externalref>
	<testgroup title="TestGroup_1">
		<capltestcase name="TC_015" title="TC_015"/>
	</testgroup>
</testmodule>