我用S51+SJA1000+TJA1050做的两个板子，连接在一起通信，一个发送一个接收；现在出现以下几个问题：
接收数据后，判断是否有数据溢出，有就清除数据溢出并释放缓冲区，没有的话就直接释放缓冲区，可是每次接收数据后同样是显示数据溢出，进行数据溢出处理。（即使我只发送一次也是如此）
请问这个怎么解决？？
下面是我的发送程序和接收处理程序：
void SendData(void)
{
unsigned char datalong;
SendBuf[0] = 0x11;
SendBuf[1] = 0x28;
if((ReadSjaReg(REG_CONTROL)&0x01)==0) //JA1000处于工作模式
{
for (i=0; i<8; i++)
SendBuf[i+2]=testdata;
if((ReadSjaReg(REG_STATUS)&0x08)==0x08)
{
if((ReadSjaReg(REG_STATUS)&0x04)==0x04)
{
*((unsigned char xdata *)REG_TxBuffer1) = SendBuf[0];
*((unsigned char xdata *)REG_TxBuffer2) = SendBuf[1];
datalong = SendBuf[1] & 0x0f;
if(datalong!=0)
{
*((unsigned char xdata *)REG_TxBuffer3) = SendBuf[2];
*((unsigned char xdata *)REG_TxBuffer4) = SendBuf[3];
*((unsigned char xdata *)REG_TxBuffer5) = SendBuf[4];
*((unsigned char xdata *)REG_TxBuffer6) = SendBuf[5];
*((unsigned char xdata *)REG_TxBuffer7) = SendBuf[6];
*((unsigned char xdata *)REG_TxBuffer8) = SendBuf[7];
*((unsigned char xdata *)REG_TxBuffer9) = SendBuf[8];
*((unsigned char xdata *)REG_TxBuffer10) = SendBuf[9];
}
BCAN_CMD_PRG(TR_CMD); //置位发送请求位
P2_0=0;
}
}
}
else //SJA1000在复位模式
{
Config_SJA();
}
}
//接收处理程序
void CanRcv_Prg(void)
{
unsigned char DataLong;
if(ReadSjaReg(REG_STATUS) & 0x01 == 0x01)//工作模式下
{
RcvBuf[0] = *((unsigned char xdata *)REG_RxBuffer1);
RcvBuf[1] = *((unsigned char xdata *)REG_RxBuffer2);
DataLong = RcvBuf[1]&0x0f;
if(DataLong != 0)
{
RcvBuf[2] = *((unsigned char xdata *)REG_RxBuffer3);
RcvBuf[3] = *((unsigned char xdata *)REG_RxBuffer4);
RcvBuf[4] = *((unsigned char xdata *)REG_RxBuffer5);
RcvBuf[5] = *((unsigned char xdata *)REG_RxBuffer6);
RcvBuf[6] = *((unsigned char xdata *)REG_RxBuffer7);
RcvBuf[7] = *((unsigned char xdata *)REG_RxBuffer8);
RcvBuf[8] = *((unsigned char xdata *)REG_RxBuffer9);
RcvBuf[9] = *((unsigned char xdata *)REG_RxBuffer10);
}
if(ReadSjaReg(REG_STATUS) & 0x03 == 0x03)
{
WriteSjaReg(REG_COMMAND,0x0c); //释放缓冲区并清除溢出标志
P2_2 = 0; //(问题就在这里！！！！！！！！！)
}
else
{
WriteSjaReg(REG_COMMAND,0x04); //释放缓冲区
}
}
}
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