关于FlexRay头帧CRC计算方式

强强

int main(int argc, char *argv[])
{
    QCoreApplication a(argc, argv);

    //RUN_TESTS(tests);
    unsigned int shData = 0x00;
    unsigned short shSync    = 1; //同步
    unsigned short shStartUp = 1; //启动
    unsigned short shFrameId = 1; //帧ID
    unsigned short shLength  = 16; //长度

    //for( int iLoop = 0x00 ; iLoop < 20 ; ++iLoop )
    {
       // shFrameId = iLoop + 1 ;
       shData = (shSync << 19) | ( shStartUp << 18 ) | (shFrameId << 7) | shLength ;
       //shData = shData | (1<<20) | (1<<21);
       unsigned short shRst = ( MyFlexrayCrc(shData,20,11,0x1A,0x385) & 0x7FF);
       qDebug()<<QString::number(shData,2)<<" Crc11(Hex):"<<QString::number(shRst ,16)<<shRst;
    }
    qDebug()<<"Exit";
    return a.exec();
}

强强

我用Qt做的，同步启动为1计算的和文档一样。
unsigned short shSync    = 0; //同步
    unsigned short shStartUp = 0; //启动
    unsigned short shFrameId = 10; //帧ID
    unsigned short shLength  = 1; //长度
这个参数不行

eefocus_3884156

你好shData进的是什么数据呢？

eefocus_3884156

强强 发表于 2021-4-9 10:43
unsigned int MyFlexrayCrc(unsigned int shData , unsigned char bBitCount , unsigned int vCrcSize , un ...

你好 能否讲解一下shdata进的是什么数据呢