Uint16 checkbcc(Uint16 *point_dat,Uint16 byte_len)
{
Uint16 BCC1=0,BCC2=0;
Uint16 i,j;
Uint16 flag0,flag1;
for(i=1;i<byte_len-2;i+2)
{
BCC1=BCC1^point_dat[i];
}
TEXT_RXTX.TEXT_BCC1.all=check_parity_bit(BCC1);
for(j=2;j<byte_len-2;j+2)
{
BCC2^=point_dat[j];
}
TEXT_RXTX.TEXT_BCC2.all=check_parity_bit(BCC2);
flag0=TEXT_RXTX.TEXT_BCC1.all^point_dat[byte_len-2];
flag1=TEXT_RXTX.TEXT_BCC2.all^point_dat[byte_len-1];
if(flag0==0&&flag1==0)//校验无误
{
return 1;
}
else
{
return 0;
}
}
interrupt void SCIRXINTB_ISR(void)
{
Uint16 ParityValue,i;
DINT;
while(ScibRx_Ready()==0);
TEXT_RXTX.TEXT_SCIRXB[0].all=ScibRegs.SCIRXBUF.bit.RXDT;
RdataB[0]=TEXT_RXTX.TEXT_SCIRXB[0].all;
switch(RdataB[0])
{
case 0x20:
for(i=1;i<Length;i++)
{
while(ScibRx_Ready()==0);
TEXT_RXTX.TEXT_SCIRXB[i].all=ScibRegs.SCIRXBUF.bit.RXDT;
RdataB[i]=TEXT_RXTX.TEXT_SCIRXB[i].all;
}
ParityValue=checkbcc(RdataB,i);
break;
case 0x06:
{
//发送正常;
break;
}
case 0x15:
{
//再次发送;
break;
}
}
for(i=0;i<Length;i++)
{
while(ScibRx_Ready()==0);
TEXT_RXTX.TEXT_SCIRXB[i].all=ScibRegs.SCIRXBUF.bit.RXDT;
RdataB[i]=TEXT_RXTX.TEXT_SCIRXB[i].all;
}
/* if()//SCIB传送结束;
{
SciaRegs.SCITXBUF=0x01;
SCITXB_FLAG=1;
}
*/
ParityValue=checkbcc(RdataB,i);//数据水平偶校验;1:校验正确;0:校验有误;
if(ParityValue==1)
{
}
PieCtrlRegs.PIEACK.bit.ACK9=1;
EINT;
}