从零学习VH6501 —— Repetitions 干扰触发的次数配置

Posted 2022-03-02 蚂蚁小兵

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系列用的CANoe演示工程我放在了Git上，不定时根据博客更新。

CANoe-Demn

前言

测试软硬件环境：
VH6501 CAN Disturbance Interface
CANoe 11 SP2
Win10 X64
如下图这是整个VH6501能够用到的所有 类

本章节将继续讲解 Repetitions

Class: CanDisturbanceTriggerRepetitions

这个类比较简单，它没有方法，只有四个参数，定义了当触发发生时，连续触发的次数

① 下面的这个脚本就是直接在总线上连续触发31帧格式错误报文

testcase TC_04()

    CanDisturbanceFrameTrigger frameTrigger;
    CanDisturbanceSequence     sequence;
     CanDisturbanceTriggerRepetitions repetitions;
    dword                       deviceID; 
    long                       valditiyMask;
    message 0x100              triggerMessage;
    long                       validityMask;
    long                        result;
    
    //clear the sequence
    sequence.Clear();
    deviceID = 1;
    //configure the message should be triggered
    
    //ID must standard ID and a CAN message must on the bus
    validityMask = @sysvar::CanDisturbance::Enums::ValidityMaskFlags::IDBase  
                   | @sysvar::CanDisturbance::Enums::ValidityMaskFlags::IDE 
                   | @sysvar::CanDisturbance::Enums::ValidityMaskFlags::FDF ;
    //validityMask = 0;
    frameTrigger.SetMessage(triggerMessage, deviceID, validityMask);

    frameTrigger.TriggerFieldType =   
            @sysvar::CanDisturbance::Enums::FieldType::AckDelimiter;
    frameTrigger.TriggerFieldOffset = 0;
    
    //configure a sequence 320 FPGA ticks long and send a recessive bit at the Ack slot
    //bit on the bus. 
    result = sequence.AppendToSequence(320, 'd');
  
    //Define 33 repetitions and one cycle with a 1 ms hold off time 
    repetitions.Cycles = 1;
    repetitions.HoldOffCycles = 1;//100ms
    repetitions.HoldOffRepetitions = 0;
    repetitions.Repetitions = 31;
  
    if(result == 1)
    
      result = canDisturbanceTriggerEnable(deviceID, frameTrigger, sequence,repetitions);
      if(result == 1)
      
        write("Trigger is enabled");
      
      else
      
        write("Enable trigger error Result =%d", result);

② 运行结果，可以看到连续触发了31错误报文。
即

repetitions.HoldOffRepetitions = 0;
repetitions.Repetitions = 31;//连续触发31帧格式错误报文

将上面脚本的代码换成如下的代码，对比观察下下面贴图的输出

repetitions.Cycles = 2;
repetitions.HoldOffCycles = 1000;//1000ms
repetitions.HoldOffRepetitions = 100;
repetitions.Repetitions = 5;

③ CanDisturbanceTriggerRepetitions 帮助文档的解释

总结

本章博客，讲解了VH6501的函数库中的Repetitions 类，可以设置触发发生后的循环次数。
更全面的VH6501学习请参考帮助文档和官方示例
C:\\Users\\Public\\Documents\\Vector\\CANoe\\Sample Configurations 11.0.55\\CAN\\MoreExamples\\CANDisturbanceInterface