计数器.........zip

#include <reg52.h> #define uchar unsigned char #define uint unsigned int #define ulong unsigned long sbit DULA = P2^6; sbit WELA = P2^7; unsigned char code WETable[8] = { ~0x80,~0x40,~0x20,~0x10, ~0x08,~0x04,~0x02,~0x01 }; unsigned char code DUTable[16] = { 0x3F,0x06,0x5B,0x4F, 0x66,0x6D,0x7D,0x07, 0x7F,0x6F,0x77,0x7C, 0x39,0x5E,0x79,0x71 }; unsigned char LedBuff[8] = { 0x3F,0x3F,0x3F,0x3F, 0x3F,0x3F,0x3F,0x3F }; bit flag = 0; void Timer0Init(void); //1毫秒@11.0592MHz void main(void) { unsigned long sec = 0; Timer0Init(); while(1) { if(1==flag) { flag = 0; sec++; LedBuff[0] = DUTable[sec/1%10]; LedBuff[1] = DUTable[sec/10%10]; LedBuff[2] = DUTable[sec/100%10]; LedBuff[3] = DUTable[sec/1000%10]; LedBuff[4] = DUTable[sec/10000%10]; LedBuff[5] = DUTable[sec/100000%10]; LedBuff[6] = DUTable[sec/1000000%10]; LedBuff[7] = DUTable[sec/10000000%10]; } } } void Timer0Init(void) //1毫秒@11.0592MHz { EA = 1; ET0 = 1; //AUXR &= 0x7F; //定时器时钟12T模式 TMOD &= 0xF0; //设置定时器模式 TMOD |= 0x01; //设置定时器模式 TL0 = 0x66; //设置定时初值 TH0 = 0xFC; //设置定时初值 TF0 = 0; //清除TF0标志 TR0 = 1; //定时器0开始计时 } void LedScan(void) { static unsigned char i = 0; P0 = 0x00; DULA = 1; DULA = 0; P0 = WETable[i]; WELA = 1; WELA = 0; P0 = LedBuff[i]; DULA = 1; DULA = 0; if(i<7) { i++; } else { i = 0; } } void InterruptTimer0(void) interrupt 1 { static unsigned int cnt = 0; TL0 = 0x66; //设置定时初值 TH0 = 0xFC; //设置定时初值 LedScan(); cnt++; if(cnt>=1000) { cnt = 0; flag = 1; } }