#include <TimerOne.h>
#include <TM1637.h>
#define ON 1
#define OFF 0
int8_t TimeDisp[] = {0x00, 0x00, 0x00, 0x00};
unsigned char ClockPoint = 1;
unsigned char Update;
unsigned char halfsecond = 0;
unsigned char second;
unsigned char minute = 20;
unsigned char hour = 10;
int buttonpin2=2;//按键的一只脚接端口2,另一只脚接地
int buttonpin7=7;//按键的一只脚接端口7,另一只脚接地
#define CLK 10
#define DIO 11 //DIO接一个4.7k的下拉电阻,这点很重要,否则数码管会假死。
TM1637 tm1637(CLK, DIO);
void setup()
{
pinMode(buttonpin2,INPUT_PULLUP);//输入上拉模式
pinMode(buttonpin7,INPUT_PULLUP);//输入上拉模式
tm1637.set();
tm1637.init();
Timer1.initialize(500000);//timing for 500ms
Timer1.attachInterrupt(TimingISR);//declare the interrupt serve routine:TimingISR
}
void loop()
{
if(digitalRead(buttonpin2)==0)//按键被按下,调整小时
{
delay(200);//延时去抖动
if(digitalRead(buttonpin2)==0)
{
hour=hour+1;
if (hour == 24) {hour = 0;}
}
}
if(digitalRead(buttonpin7)==0)//按键被按下,调整分
{
delay(200);//延时去抖动
if(digitalRead(buttonpin7)==0)
{
minute=minute+1;
if (minute == 60){minute = 0;}
}
}
if (Update == ON) //每隔0.5秒调用一次
{
TimeUpdate();
tm1637.display(TimeDisp);
}
}
void TimingISR()
{
halfsecond ++; Update = ON;
if (halfsecond == 2)
{
second ++; halfsecond = 0;
if (second == 60)
{
minute ++; second = 0;
if (minute == 60)
{
hour ++; minute = 0;
if (hour == 24) {hour = 0;}
}
}
}
ClockPoint = (~ClockPoint) & 0x01; //ClockPoint先是按位取反再按位与,结果就是0 1 0 1......这样一直下去。我的理解是0.5秒为0,1秒为1,1.5秒为0,2秒为1。。。。。。
}
void TimeUpdate(void)
{
if (ClockPoint) tm1637.point(POINT_ON);
else tm1637.point(POINT_OFF);
TimeDisp[0] = hour / 10;
TimeDisp[1] = hour % 10;
TimeDisp[2] = minute / 10;
TimeDisp[3] = minute % 10;
Update = OFF;
}
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