LPC952 Uart1 接收不了

只看该作者 · 2010-3-16 22:19

/***************************************************************
* ??:    UART_Init()
* ??:    LPC952
****************************************************************/
void UART_Init()
{
  EA=0;
  P1M1&=0x10;       //TXD?RXD
  P1M2&=0xec;
  P1=0xff;
//UART0
  S0CON=0x50;
  S0STAT=0x20; // separate Rx / Tx interrupts
  BRGCON_0=0;
  BRGR1_0=0x02; //19200
  BRGR0_0=0x61;
  BRGCON_0=3;
//UART1
  P4M1=0x10;P4M2=0xe0;
  S1CON=0x50;
  S1STAT=0x20; // separate Rx / Tx interrupts
  BRGCON_1=0;
  BRG1_1=0x01; //38400
  BRG0_1=0x29;
  BRGCON_1=3;
  ES = 1;       // enable UART interrupt
  EA=1;
}
/************************/