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问 我是个CAN初学者，现在在做一个CAN转换通信电路，我将要发送的数据写入发送缓存中后启动发送指令（0x12），让SJA1000工作于自接收测试模式，但是SJA1000一直处于发送状态，死在那里了，中断寄存器也只是只是发送中断，状态寄存器指示SJA1000一直处于发送状态。真搞不懂为什么，现在人都快疯了，烦劳各位大哥给小弟多点指点。
现附上本人的CAN发送程序、及SJA1000初始化程序：
void sja1000_sent(void)
      {
       unsigned char data j;

       EA=0;
       SJA1000_ADDRESS=SJA1000_STATE;        //指向状态寄存器
       temp=*SJA1000_ADDRESS;          
         do
        {
         temp=*SJA1000_ADDRESS;               //读出当前状态    
        }
      while(temp&SJA1000_RECEIVING);          //如正在接收，则等待     
      do
        {
         temp=*SJA1000_ADDRESS;               //读出当前状态
        }
      while(!(temp&SJA1000_SENT_OVER));       //则等待先前发送成功                 
      do
        {
         temp=*SJA1000_ADDRESS;               //读出当前状态    
        }
      while(!(temp&SJA1000_SENT_LOCK));       //如发送缓冲区被锁定，则等待释放        

     SJA1000_ADDRESS=SJA1000_TXBUF;
     for(j=0;j<=12;j++)                            //发送到CAN缓冲区
        {
         *(SJA1000_ADDRESS+j)=CAN_TXD_BUF[j];   
        }
     SJA1000_ADDRESS=SJA1000_COMMAND;             //指向命令寄存器
     *SJA1000_ADDRESS=SJA1000_SENT_COMMAND;       //发送请求命令  
     SJA1000_ADDRESS=SJA1000_STATE;
     send_succeed=1;
     EA=1;    
     }
void init_sja1000(void)
     {
      SJA1000_ADDRESS=SJA1000_MODEL;                  //指向模式寄存器
      *SJA1000_ADDRESS=SJA1000_RESET_MODEL;           //进入复位模式
       
      while(!(*SJA1000_ADDRESS&SJA1000_RESET_MODEL)); //等待进入复位模式
      
      SJA1000_ADDRESS=SJA1000_CLOCKDIR;                  //指向时钟分频寄存器
      *SJA1000_ADDRESS=SJA1000_CDR_COMMAND;           //使用Peli CAN模式，CLOCK使用禁止输出
      
      SJA1000_ADDRESS=SJA1000_ENINTERR;                  //指向中断使能寄存器
      *SJA1000_ADDRESS=SJA1000_IER_COMMAND;           //开放接收，数据溢出，错误报警中断
     
      SJA1000_ADDRESS=SJA1000_OUTCONTR;               //指向输出控制寄存器
      *SJA1000_ADDRESS=SJA1000_OUT_COMMAND;           //正常输出模式
      
      SJA1000_ADDRESS=SJA1000_BUSTIME0;              //指向总线定时0寄存器
      *SJA1000_ADDRESS=BTR0_250Kbps;                         //选择250Kbps
      SJA1000_ADDRESS=SJA1000_BUSTIME1;             //指向总线定时1寄存器
      *SJA1000_ADDRESS=BTR1_250Kbps;                     //选择250Kbps
      
      SJA1000_ADDRESS=SJA1000_RBSA;                  //指向RX缓冲区起始地址寄存器
      *SJA1000_ADDRESS=SJA1000_FIFO_ADD;             //接收缓冲区FIFO起始为内部RAM的0地址
      
      SJA1000_ADDRESS=SJA1000_AMRRX0;                //指向验收屏蔽寄存器,所有位均参加验收
      *SJA1000_ADDRESS=AMR_CODE0;（0xff）
      SJA1000_ADDRESS=SJA1000_AMRRX1;
      *SJA1000_ADDRESS=AMR_CODE1;（0xff）
      SJA1000_ADDRESS=SJA1000_AMRRX2;
      *SJA1000_ADDRESS=AMR_CODE2;（0xff）
      SJA1000_ADDRESS=SJA1000_AMRRX3;
      *SJA1000_ADDRESS=AMR_CODE3; （0xff）
      
      SJA1000_ADDRESS=SJA1000_ACRRX0;                //指向验收代码寄存器,送ID码
      *SJA1000_ADDRESS=ACR_ID0;（0x0）
      SJA1000_ADDRESS=SJA1000_ACRRX1;
      *SJA1000_ADDRESS=ACR_ID1;（0xa0）
      SJA1000_ADDRESS=SJA1000_ACRRX2;
      *SJA1000_ADDRESS=ACR_ID2;（0x0）
      SJA1000_ADDRESS=SJA1000_ACRRX3;
      *SJA1000_ADDRESS=ACR_ID3;（0x0）
      
      SJA1000_ADDRESS=SJA1000_RX_ERR;                //指向接收错误寄存器   
      *SJA1000_ADDRESS=SJA1000_CLEAR_TX_ERR;         //清除接收错误
      
      SJA1000_ADDRESS=SJA1000_ALC;                   //指向仲裁丢失捕捉寄存器
      temp=*SJA1000_ADDRESS;                         //通过读取清除
      
      SJA1000_ADDRESS=SJA1000_ECC;                   //指向错误代码捕捉寄存器
      temp=*SJA1000_ADDRESS;                         //通过读取清除
      
      SJA1000_ADDRESS=SJA1000_MODEL;                 //指向模式寄存器
      *SJA1000_ADDRESS=SJA1000_WORK_MODEL;           //设置双滤波接收，进入工作模式
      while(!(*SJA1000_ADDRESS==0));                 //等待进入工作模式      
     }
多谢各位了。 答 1: 写详细点把你的硬件电路给出来，以及一些变量的说明将清楚嘛，这样人家才好看嘛。光写一部分程序，谁知道是不是其他方面的问题了