#include <STC12C5A60S2.H>
sbit ENLED = P1^1 ;
sbit LED = P0^1 ;
sbit ADDR2 = P2^2;
sbit ADDR1 = P2^1;
sbit ADDR0 = P2^0;
unsigned char code LedChar[] = {
0xC0, 0xF9, 0xA4, 0xB0, 0x99, 0x92, 0x82, 0xF8,
0x80, 0x90, 0x88, 0x83, 0xC6, 0xA1, 0x86, 0x8E
};
unsigned char LedBuff[] = { //数码管显示缓冲区
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF
};
unsigned char flag1s = 0;
unsigned char cnt = 0;
unsigned char i = 0;
void SecondCount();
void LedRefresh();
void main()
{
ENLED = 0; //选择控制数码管
TMOD = 0x01;
TH0 = 0xF5;
TL0 = 0x55;
TR0 = 1; //启动T0
while (1)
{
if (TF0 == 1)
{
TF0 = 0;
TH0 = 0xF5;
TL0 = 0x55;
SecondCount();
LedRefresh();
}
}
}
void SecondCount()
{
static unsigned int cnt = 0;
static unsigned long sec = 0;
cnt++;
if (cnt >= 1000)
{
cnt = 0;
sec++;
LedBuff[0] = LedChar[sec%10];
LedBuff[1] = LedChar[sec/10%10];
LedBuff[2] = LedChar[sec/100%10];
LedBuff[3] = LedChar[sec/1000%10];
LedBuff[4] = LedChar[sec/10000%10];
LedBuff[5] = LedChar[sec/100000%10];
}
}
void LedRefresh()
{
static unsigned char i = 0;
switch (i)
{
case 0: ADDR2=0; ADDR1=0; ADDR0=0; i++; P0=LedBuff[5]; break;
case 1: ADDR2=0; ADDR1=0; ADDR0=1; i++; P0=LedBuff[4]; break;
case 2: ADDR2=0; ADDR1=1; ADDR0=0; i++; P0=LedBuff[3]; break;
case 3: ADDR2=0; ADDR1=1; ADDR0=1; i++; P0=LedBuff[2]; break;
case 4: ADDR2=1; ADDR1=0; ADDR0=0; i++; P0=LedBuff[1]; break;
case 5: ADDR2=1; ADDR1=0; ADDR0=1; i=0; P0=LedBuff[0]; break;
default: break;
}
}
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