ARDUINO+TM1637+按键显示时间

ID:278589 · 发表于 2018-1-22 14:38

#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;
}