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爱科技、爱创意、爱折腾、爱极致，我们都是技术控
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本帖最后由 waxkj 于 2019-9-22 20:09 编辑
https://www.mydigit.cn/forum.php?mod=viewthread&tid=17495
充分利用DS3231片内资源，增加显示：星期，和温度，增加递减按键，改变单片机任意引脚驱动段位，本人水平也十分有限，感觉亮度不太理想，望高手给看看如何改！
个人只是在原作者程序上稍加修改，只做个个人学习用途。贴程序如下。怎么安排星期，时间，温度的位置那就是你自己的事了。com8我只是用来驱动“℃”的，对应段位全部链接在一起，用一个PNP来驱动，这样可以和全部的数码管随外界光线变化亮度一致。
#include <12c5a60s2.h>
#include"ds3231.h"
unsigned char code tab[]=
//{0xBE,0x06,0xDA,0xCE,0x66,0xEC,0xFC,0x86,0xFE,0xEE,0x00};//0-9,共阴
{0x3F,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,0x7F,0x6F,0x00};
//{0xBF,0x86,0xDB,0xCF,0xE6,0xED,0xFD,0x87,0xFF,0xEF,0x80}、、带小数点
#define ADC_POWER 0X80
#define ADC_FLAG 0X10
#define ADC_START 0X08
#define ADC_SPEED0 0X00 //540 CLOCKS
#define ADC_SPEED1 0X02 //360 CLOCKS
#define ADC_SPEED2 0X04 //180 CLOCKS
#define ADC_SPEED3 0X06 //90 CLOCKS
unsigned char hour,min,week,flash;
unsigned char ch=0x05;
bit sec;//1HZ秒点闪烁
uchar TC,TB;
unsigned char j,i;
#define com1 P11
#define com2 P12
#define com3 P13
#define com4 P10
#define com5 P14
#define com6 P16
#define com7 P17
#define com8 P03
#define seg8 P20
#define seg2 P21
#define seg3 P22
#define seg4 P23
#define seg5 P24
#define seg6 P25
#define seg7 P26
#define seg1 P27
//sbit bit5=P1^4;
sbit k1=P3^0;
sbit k2=P3^1;
sbit k3=P3^3;
unsigned char year,mon,day,wenduh,wendul,wendu,bright=0;
unsigned char dig1,dig2,dig3,dig4,dig5,dig6,dig7,col_flag;
void led_off(void) //51开发板数码管，位选低电平导通。
{
com1=com2=com3=com4=com5=com6=com7=com8=0;
}
void set_seg(unsigned char dat_led)
{
seg1=dat_led&0x01;
seg2=dat_led&0x02;
seg3=dat_led&0x04;
seg4=dat_led&0x08;
seg5=dat_led&0x10;
seg6=dat_led&0x20;
seg7=dat_led&0x40;
seg8=col_flag;
}
void display(unsigned char a,b,c,e)
{
static unsigned char i=0;
led_off();
seg1=seg2=seg3=seg4=seg5=seg6=seg7=seg8=0;
if(dig1=a/16)dig1=a/16;else dig1=10;
dig2=a%16;
dig3=b/16;
dig4=b%16;
dig5=c;
dig6=e/10;
dig7=e%10;
switch(i)//每次显示一个COM
{
case 0: set_seg(tab[dig1]);col_flag=sec;com1=1;break;
case 1: set_seg(tab[dig2]);col_flag=sec;com2=1;break;
case 2: set_seg(tab[dig3]);col_flag=0;com3=1;break;
case 3: set_seg(tab[dig4]);col_flag=0;com4=1;break;
case 4: set_seg(tab[dig5]);col_flag=0;com5=1;break;
case 5: set_seg(tab[dig6]);col_flag=0;com6=1;break;
case 6: set_seg(tab[dig7]);col_flag=0;com7=1;com8=1;break;
default:break;
}
if(++i>=7) i=0;
}
void delay(unsigned int z)
{
unsigned int x,y;
for(x=z;x>0;x--)
for(y=900;y>0;y--);
}
void Ttemp_read()
{
char duwenduh,duwendul;
write_ds3231(0x0e,0x20); //采集温度
duwenduh=read_ds3231(0x11)-4;//读取温度高位
duwendul=read_ds3231(0x12);//读取温度低位
wenduh=duwenduh;
wendul=duwendul;
}
void ADC_init()
{
P1ASF=0x20;//把P1.5设为AD输入
ADC_RES=0;
ADC_RESL=0;
ADC_CONTR = ADC_POWER | ADC_SPEED2 | ch;
delay(1);
}
void keyscan()
{
unsigned char temp;
if(!k1)//按键按下
{
delay(12);
if(!k1)
{
while(!k1);
j++;
if(j>7) j=0;
}
}
if(!k2)
{
delay(12);
if(!k2)
{
while(!k2);
switch(j)
{
case 0: break;
case 1:
{
temp=read_ds3231(2);
temp=((temp>>4)*10)+(temp&0x0f);
temp++;
if(temp>=24)temp=0;
temp = ((temp/10)<<4)|(temp%10);
write_ds3231(0x02,temp);
hour=read_ds3231(2);
break;
}
case 2:
{
temp=read_ds3231(1);
temp=((temp>>4)*10)+(temp&0x0f);
temp++;
if(temp>=60)temp=0;
temp = ((temp/10)<<4)|(temp%10);
write_ds3231(0x01,temp);
min=read_ds3231(1);
break;
}
case 3:
{
write_ds3231(0x00,0);
min=read_ds3231(0);
break;
}
case 4:
{
temp=read_ds3231(0x06);
temp=((temp>>4)*10)+(temp&0x0f);
temp++;
if(temp>=99)temp=18;
temp = ((temp/10)<<4)|(temp%10);
write_ds3231(0x06,temp);
year=read_ds3231(0x06);
break;
}
case 5:
{
temp=read_ds3231(0x05);
temp=((temp>>4)*10)+(temp&0x0f);
temp++;
if(temp>=13)temp=1;
temp = ((temp/10)<<4)|(temp%10);
write_ds3231(0x05,temp);
mon=read_ds3231(0x05);
break;
}
case 6:
{
temp=read_ds3231(0x04);
temp=((temp>>4)*10)+(temp&0x0f);
temp++;
if(temp>=32)temp=1;
temp = ((temp/10)<<4)|(temp%10);
write_ds3231(0x04,temp);
day=read_ds3231(0x04);
break;
}
case 7:
{
temp=read_ds3231(0x03);
temp=((temp>>4)*10)+(temp&0x0f);
temp++;
if(temp>=8)temp=1;
temp = ((temp/10)<<4)|(temp%10);
write_ds3231(0x03,temp);
week=read_ds3231(0x03);
break;
}
}
}
}
if(!k3)
{
delay(2);
if(!k3)
{
while(!k3);
switch(j)
{
case 0: break;
case 1:
{
temp=read_ds3231(2);
temp=((temp>>4)*10)+(temp&0x0f);
temp--;
if(temp<=0)temp=23;
temp = ((temp/10)<<4)|(temp%10);
write_ds3231(0x02,temp);
hour=read_ds3231(2);
break;
}
case 2:
{
temp=read_ds3231(1);
temp=((temp>>4)*10)+(temp&0x0f);
temp--;
if(temp<=0)temp=59;
temp = ((temp/10)<<4)|(temp%10);
write_ds3231(0x01,temp);
min=read_ds3231(1);
break;
}
case 3:
{
write_ds3231(0x00,0);
min=read_ds3231(0);
break;
}
case 4:
{
temp=read_ds3231(0x06);
temp=((temp>>4)*10)+(temp&0x0f);
temp--;
if(temp<=17)temp=99;
temp = ((temp/10)<<4)|(temp%10);
write_ds3231(0x06,temp);
year=read_ds3231(0x06);
break;
}
case 5:
{
temp=read_ds3231(0x05);
temp=((temp>>4)*10)+(temp&0x0f);
temp--;
if(temp<=0)temp=12;
temp = ((temp/10)<<4)|(temp%10);
write_ds3231(0x05,temp);
mon=read_ds3231(0x05);
break;
}
case 6:
{
temp=read_ds3231(0x04);
temp=((temp>>4)*10)+(temp&0x0f);
temp--;
if(temp<=0)temp=31;
temp = ((temp/10)<<4)|(temp%10);
write_ds3231(0x04,temp);
day=read_ds3231(0x04);
break;
}
case 7:
{
temp=read_ds3231(0x03);
temp=((temp>>4)*10)+(temp&0x0f);
temp--;
if(temp<=0)temp=7;
temp = ((temp/10)<<4)|(temp%10);
write_ds3231(0x03,temp);
week=read_ds3231(0x03);
break;
}
}
}
}
}
void timer_init()
{
TMOD=0x01;
AUXR |= 0x80; //定时器时钟1T模式
//TMOD &= 0xF0; //设置定时器模式
P1M1=0x20;
P1M0=0xff;
P0M1=0x00;
P0M0=0x0f;
TH0=0xfB;
TL0=0x92;
ET0=1;
TR0=1;
//EX0=1;
// IT0=1;
EA=1;
}
void main()
{
ADC_init();
timer_init();
DS3231_init();
while(1)
{
keyscan();
Ttemp_read();
switch(j)
{
case 0:{ hour=read_ds3231(2); min= read_ds3231(1);week=read_ds3231(3);break;}
case 1:{ sec=1;if(flash)hour=read_ds3231(0x02);else hour=0xaa; min=read_ds3231(1); break;}
case 2:{ sec=1;hour=read_ds3231(0x02); if(flash)min= read_ds3231(1);else min=0xaa;break;}
case 3:{ sec=1;hour=read_ds3231(0x02); if(flash)min= read_ds3231(0);else min=0xaa;break;}
case 4:{ sec=1;if(flash)hour=read_ds3231(0x06);else hour=0xaa;min=read_ds3231(5);break;}
case 5:{ sec=1;hour=read_ds3231(0x06); if(flash)min= read_ds3231(5);else min=0xaa;break;}
case 6:{ sec=1;hour=read_ds3231(0x05); if(flash)min= read_ds3231(4);else min=0xaa;break;}
case 7:{ sec=1;hour=read_ds3231(0x04); if(flash)min= read_ds3231(3);else min=0xaa;break;}
}
ADC_CONTR = ADC_POWER | ADC_SPEED2 |ADC_START | ch;
delay(1);
/*
if (ADC_RES<25 ) bright=9;
else if (ADC_RES<50 ) bright=8;
else if (ADC_RES<75 ) bright=7;
else if (ADC_RES<100) bright=6;
else if (ADC_RES<125) bright=5;
else if (ADC_RES<150) bright=4;
else if (ADC_RES<175) bright=3;
else if (ADC_RES<200) bright=2;
else if (ADC_RES<225) bright=1;
else bright=0;
*/
bright=255-ADC_RES;
if(bright<=15)
bright=15;
}
}
void timer0() interrupt 1
{
static unsigned char pwm=0;
uchar flag;
AUXR |= 0x80; //定时器时钟1T模式
TMOD=0x01;
TH0=0xfb;
TL0=0x92;
flag++;
if(flag==255)
{
TC++;
flag=0;
TB++;
if(TB==28)
{TB=0;
flash=!flash;}
}
if(TC==46) // 具体数据根据时钟频率调整,0.5秒换一次。
{
TC=0;
sec=!sec;
}
if(pwm<=bright)
display(hour,min,week,wenduh);
else
led_off();
pwm++;
if(pwm==255)
pwm=0;
}
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