标题:
用定时器定时1秒,在P0口接数码管(BCD数码管),每秒显示的数字加一
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作者:
天才鱼yhx
时间:
2017-1-24 23:03
标题:
用定时器定时1秒,在P0口接数码管(BCD数码管),每秒显示的数字加一
用定时器定时1秒,在P0口接数码管(BCD数码管),每秒显示的数字加一,1,依次显示12345678, 求程序编写
作者:
nessus
时间:
2017-1-25 10:35
#include <reg52.h>
#define uchar unsigned char
#define uint unsigned int
sbit we = P2^7;
sbit du = P2^6;
uchar counter,time_counter;
uchar code leddata[]={
0x3F, //"0"
0x06, //"1"
0x5B, //"2"
0x4F, //"3"
0x66, //"4"
0x6D, //"5"
0x7D, //"6"
0x07, //"7"
0x7F, //"8"
0x6F, //"9"
0x77, //"A"
0x7C, //"B"
0x39, //"C"
0x5E, //"D"
0x79, //"E"
0x71, //"F"
0x76, //"H"
0x38, //"L"
0x37, //"n"
0x3E, //"u"
0x73, //"P"
0x5C, //"o"
0x40, //"-"
0x00, //熄灭
0x00 //自定义
};
void delay(uint z)
{
uint x,y;
for(x = z; x > 0; x--)
for(y = 114; y > 0 ; y--);
}
void display(uchar i)
{
P0 = 0xff;
we = 1;
P0 = 0xfe;//点亮第一位数码管
we = 0;
du = 1;
P0 = leddata[i];
du = 0;
delay(1);
}
void main()
{
TMOD = 0x01;//定时器0 工作模式1 16模式定时器
TH0 = (65536 - 46082)/256;
TL0 = (65536 - 46082)%256; //定时50ms
TR0 = 1;//启动定时器0
while(1)
{
if(TF0 == 1)
{
TF0 = 0;
TH0 = 0x4b;
TL0 = 0xfe; //定时50ms
counter++;
}
if(counter == 20)
{
counter = 0;
time_counter++;
}
if(time_counter == 9)
time_counter = 0;
display(time_counter);
}
}
作者:
天才鱼yhx
时间:
2017-1-25 15:26
nessus 发表于 2017-1-25 10:35
#include
#define uchar unsigned char
#define uint unsigned int
谢谢 但是我想让它在一位数码管上实现,用不来定时器,您能帮我修改下吗,这是我的程序
#include<reg52.h>
#define uchar unsigned char
#define uint unsigned int
uchar code seg7ca[]={
0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f
}; //0 1 2 3 4 5 6 7 8 9
void delay(uint t)
{
uint i,j;
for(i=0;i<t;i++)
{
for(j=0;j<124;j++);
}
}
void main()
{
while(1)
{
uchar i=0;
for(i=0;i<10;i++)
{
P0=seg7ca
;
delay(1000);
}
}
}
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