timer.txt

新的1211单片机定时器程序

#include <REG1210.H>
#include <intrins.h>
#include <stdio.h>
#include "ISD51.h"	
#include "ROM.H"
#define XTAL  11059200              // XTAL frequency 11.0592 MHz

// defines for UART BAUDRATE
#define BAUDRATE          9600      // 9600bps communication baudrate
#define T2RELOAD   (65536-(XTAL/32/BAUDRATE))
sbit RedLed = P2^0;	            //EVM Led
sbit YellowLed = P2^1;              //EVM Led	 
extern unsigned char i=0x100;       //每32次T0中断使EVM板上的指示灯闪烁
//定时器中断
void Interrupt (void) interrupt 1 {
 TL0=0x00; //定时器重新赋值
 TH0=0x00;
 i=i-1;
 if(!i){
      RedLed=!RedLed;
      YellowLed=!YellowLed;
	  i=0x100;
	  printf("Dingshiqi\n");
	  }
  else 
   ;
  }
void main (void)  {
//Config ISD
  T2CON   = 0x34;        // Use Timer 2 as baudrate generator
  RCAP2H  = 0xFF;
  RCAP2H  = (T2RELOAD >> 8);    // baudrate reload factor
  RCAP2L  = T2RELOAD;

  SCON0   = 0x50;        // enable serial uart & receiver
  PCON   |= 0x80;        // double baudrate for UART0
  P3DDRL &= 0xF0;        // P3DDRL set port pins of UART0 to input/strong drive output
  P3DDRL |= 0x07;        // P3DDRL set port pins of UART0 to input/strong drive output 


  USEC   = ((XTAL+500000)/1000000)-1; // USEC timer factor
  ONEMS  = (XTAL/1000)-1;             // (MSECH+MSCL) MS Timer counting at 1.0ms

  HMSEC  = 100-1;         // Hundred MS Timer to 100.0ms
  SECINT = (10-1) | 0x80; // SECINT= 10 * HMS Timer Rate = 1 sec
                          // '0x80' will set the MSB for write immediate
  MSINT  = (10-1) | 0x80; // MSINT = 10ms for Tone period time base
  PDCON  = 0x1D;          // Powerup SysTimer

  FTCON  = 0xA5;          // setup flash programming times

  EICON  = 0x40;          //DIS enable all auxiliary interrupts

  EA = 1;                 //DIS Enable global interrupt flag


 ISDwait ();              // wait for connection to uVision2 Debugger
 //Insert your own program here
 SP=0x60;
 CKCON=0x18;  //设置定时器计时基准时钟
 TMOD=0x01;	  //定时器0工作与方式1
 TL0=0x00;
 TH0=0x00;
 TR0=1;
 ET0=1;
 while(1);	//等待中断
 }