I am following a tutorial on how to build an adjustable alarm clock, here is the link. I have followed the set-up and the RTC and 7 segment display seems to be working fine. However, the buttons do not seem to be working like the tutorial states as the time does not seem to be adjusted when I press them (you have to press the right most button first, which I have done). What might be the issue with the set-up or the code?
#include <Wire.h>
#include "RTClib.h"
#include <TM1637Display.h>
RTC_DS3231 rtc;
#define CLK 8
#define DIO 9
TM1637Display display(CLK, DIO);
const uint8_t blank[] = {0x00, 0x00, 0x00,0x00};
int setButton = 2; // pushbutton for setting alarm
int hourButton = 3; // pushbutton for hour
int minButton = 4; // pushbutton for minutes
int exitButton = 5; // pushbutton for exit of set alarm
int buzzer = 13;
int t, a, Hour, Min, h, m;
int set_time, alarm_time, auto_alarmStop, set_alarm_min, set_alarm_hour;
int setButtonState = 0; // pushbutton state for setting alarm
int hourButtonState = 0; // pushbutton state for hour
int minButtonState = 0;// pushbutton state for minutes
int exitButtonState = 0; // pushbutton state for exit of set alarm
int activate;
void setup() {
Serial.begin(9600); // Begin serial communication at a baud rate of 9600:
delay(3000); // Wait for console opening:
if (! rtc.begin()) { // Check if RTC is connected correctly:
Serial.println("Couldn't find RTC");
while (1);
}
if (rtc.lostPower()) { // Check if the RTC lost power and if so, set the time:
Serial.println("RTC lost power, lets set the time!");
// The following line sets the RTC to the date & time this sketch was compiled:
rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));
// This line sets the RTC with an explicit date & time, for example to set
// July 02, 2020 at 3:47am you would call:
//rtc.adjust(DateTime(2020, 7, 02, 03, 47, 0));
}
Wire.begin();
display.setBrightness(0xA);
pinMode(setButton,
INPUT_PULLUP);
pinMode(hourButton, INPUT_PULLUP);
pinMode(minButton, INPUT_PULLUP);
pinMode(exitButton, INPUT_PULLUP);
pinMode(buzzer, OUTPUT);
activate = 0;
}
void loop() {
DateTime now = rtc.now();
Hour = now.hour();
Min = now.minute();
t =(now.hour()* 100 )+ now.minute();
a=now.second()%2;
if(a==0){display.setColon(false);}
else{display.setColon(true);}
switch(activate){
case 0:
display.showNumberDec(t, true);
setButtonState = digitalRead(setButton);
if(setButtonState == LOW){ delay(50); activate = 1;}
if(t == alarm_time &&
now.second()==0){activate = 2;}
break;
case 1:
display.setSegments(blank);//clear display
display.showNumberDec(0, true);
display.setColon(true);
while(activate == 1){
hourButtonState = digitalRead(hourButton);
if(hourButtonState == LOW){
h++;
edit();
set_alarm_hour = h;
delay(200);
}
minButtonState = digitalRead(minButton);
if(minButtonState == LOW){
m++;
edit();
set_alarm_min = m;
delay(200);
}
exitButtonState = digitalRead(exitButton);
if(exitButtonState == LOW){delay(50); activate = 0;}
}
alarm_time = (set_alarm_hour*100)+set_alarm_min;
break;
case 2:
alarm();
display.showNumberDec(t, true);
auto_alarmStop = alarm_time+1;
exitButtonState = digitalRead(exitButton);
if(exitButtonState == LOW){delay(50); activate = 0;}
if(t == auto_alarmStop){activate = 0;}
display.showNumberDec(t, true);
break;
}
delay(5);
}
void edit(){
if(m==60){m=0; h++;}
if(m<0){m=59; h--;}
if(h==24){h=0;}
if(h<0){h=23; m=59;}
set_time = (h*100)+ m;
display.showNumberDec(set_time, true);
display.setColon(true);
}
void alarm(){
tone(13, 500, 200);
delay(100);
tone(13, 1000, 200);
delay(100);
tone(13, 2000, 200);
delay(100);
tone(13, 3000, 200);
delay(100);
tone(13, 4000, 200);
delay(100);
tone(13, 3000, 200);
delay(100);
tone(13, 2000, 200);
delay(100);
tone(13, 1000, 200);
delay(100);
}
