canjiesh.c

这个是芯片MCF5213上can总线接收数据的程序。

#include<iom128v.h>
#include<macros.h>
#include<SJA_BCANCONF.h>
#include<STRING.h>
unsigned char BCAN_DATA_RECEIVE(unsigned char *RcvDataBuf)
{
    unsigned char SJA_BCANAdr,REG_STATUS,REG_RxBuffer1,REG_RxBuffer2;
    unsigned char TempCount,i;
    //CS_CAN=0;
    SJA_BCANAdr = REG_STATUS;
    if((SJA_BCANAdr&0x01)==0)
    {
      return 1;
    }
    SJA_BCANAdr = REG_RxBuffer2;
    if((SJA_BCANAdr&0x10)==0)
    {
    TempCount=(SJA_BCANAdr&0x0f)+2;
    }
    else
    {
    TempCount=2;
    }
    SJA_BCANAdr = REG_RxBuffer1;
    memcpy(RcvDataBuf,SJA_BCANAdr,TempCount);
    return 0;
}