uart1.c

采用430单片机完成的门禁控制器程序

void TXRERE1()
{
  uchar i;
  uint  j;
  RX_DATA[0]=U1RXBUF;
  if(RX_DATA[0] == 0xaa)
  {
    while (!(IFG2 & URXIFG1));
    RX_DATA[1] = U1RXBUF;    
    if(RX_DATA[1] == 0x04)
    {
      while (!(IFG2 & URXIFG1));
      for(i=2;i<8;i++)
      {
        RX_DATA[i]=U1RXBUF;
        if(i!=7)
        {
          while (!(IFG2 & URXIFG1)); 
        }
      }
    }
    j = 0;
    for(i=0; i<7; i++)
    {
      j += RX_DATA[i];
    }
    j &= 0xff;
    if(j == RX_DATA[7])
    {
      if(FLAG & gb_card)
      {
        if(RX_DATA[6] == 0X08)
        {          
          FLAG2 |= gb_addynom;
        }
        else if(RX_DATA[6] == 0X04)
        {
          FLAG2 |= gb_addyvip;
        }
        card_buf[0] = RX_DATA[2];  
        card_buf[1] = RX_DATA[3];
        card_buf[2] = RX_DATA[4];
        card_buf[3] = RX_DATA[5];
        card_buf[4] = 0XFF;
        clk_20s      = 10;
        FLAG        |= gb_lock;
      }
      else
      {
        cardyao = RX_DATA[2];
        cardyao <<= 8;
        cardyao |= RX_DATA[3];
        cardyao <<= 8;
        j = RX_DATA[4];
        j <<= 8;
        j |= RX_DATA[5];
        cardyao |= j;
        FLAG2 |= gb_cardyao;
      }
    }
  }
}
//------------------------------------------------------------------------------
//UART1程序
//------------------------------------------------------------------------------
#pragma vector=UART1RX_VECTOR
__interrupt void usart1_rx (void)
{
  _DINT();
  TXRERE1();  
  _EINT();
}