/*electronoobs digital watch code. Read all comments
Website: http://www.electronoobs.com/eng_arduino_tut40.php
Video: https://www.youtube.com/watch?v=nHZllsSoZp4
*/
#include <avr/wdt.h> // library for default watchdog functions
#include <avr/interrupt.h> // library for interrupts handling
#include <avr/sleep.h> // library for sleep
#include <avr/power.h> // library for power control
int analog_treshold = 400;
int mode_change_delay = 1000;
bool button_pressed = false;
unsigned int pressed_button_counter = 0;
unsigned int actual_button_counter = 0;
unsigned int push_time = 0;
unsigned int time_seconds = 0;
unsigned int time_minutes = 15;
unsigned int time_hours = 10;
unsigned int time_counter = 0;
unsigned previous_time_counter = 0;
int mode = 0;
int flash_delay = 300;
bool mode_was_changed = false;
void setup() {
//Serial.begin(9600);
PCICR |= B00000111; //enable port C o have interrupts
PCMSK1 |= B00000001; //Set pin D11 (increase button) trigger an interrupt on state change.
power_adc_disable(); // ADC converter
power_spi_disable(); // SPI
power_usart0_disable();// Serial (USART)
//power_timer0_disable();// Timer 0
power_timer1_disable();// Timer 1
power_timer2_disable();// Timer 2
power_twi_disable(); // TWI (I2C)
DDRD = B11111100; //Set pins D2-D7 as outputs
DDRB = B00111111; //Set pins D8-D13 as outputs
pinMode(A0,INPUT);
}
void loop() {
time_counter = millis();
//we count 1000ms for one second, than each 60 sec we have a minute
//and each 60 minute we have one hour and reset at 12h
{
previous_time_counter = previous_time_counter + 1000;
time_seconds = time_seconds + 1;
if(time_seconds > 60)
{
time_seconds = 0;
time_minutes = time_minutes + 1;
}
if(time_minutes > 60)
{
time_minutes = 0;
time_hours = time_hours + 1;
}
if(time_hours > 11)
{
time_hours = 0;
}
}
//Uncomment this for debug only. Remember to uncoment Serial.begin as well above!
/*
Serial.print("Hour: "); Serial.print(time_hours);Serial.print(" ");
Serial.print("Minute: "); Serial.print(time_minutes);Serial.print(" ");
Serial.print("Second: "); Serial.println(time_seconds);
*/
if(analogRead(A0) > analog_treshold && !button_pressed )
{
//The button was pressed
button_pressed = true;
pressed_button_counter = millis();
}//end of analog above treshold
if(analogRead(A0) < analog_treshold && button_pressed)
{
//Button was released
button_pressed = false;
if(mode == 0 && !mode_was_changed)
{
//Mode 0 is to show time
//Mode 1 is set hour
//mode 2 is set minute, then we go to mode 0 again
if(time_hours == 0)
{
PORTD &= B00000011; //pins D2 - D7 to low
PORTB &= B11000000; //pins D8 - D13 to low
PORTD |= B00000100; //Pin D2 to high
}
//Do the same for each hour
if(time_hours == 1)
{
PORTD &= B00000011;
PORTB &= B11000000;
PORTD |= B00001000;
}
if(time_hours == 2)
{
PORTD &= B00000011;
PORTB &= B11000000;
PORTD |= B00010000;
}
if(time_hours == 3)
{
PORTD &= B00000011;
PORTB &= B11000000;
PORTD |= B00100000;
}
if(time_hours == 4)
{
PORTD &= B00000011;
PORTB &= B11000000;
PORTD |= B01000000;
}
if(time_hours == 5)
{
PORTD &= B00000011;
PORTB &= B11000000;
PORTD |= B10000000;
}
if(time_hours == 6)
{
PORTD &= B00000011;
PORTB &= B11000000;
PORTB |= B00000001;
}
if(time_hours == 7)
{
PORTD &= B00000011;
PORTB &= B11000000;
PORTB |= B00000010;
}
if(time_hours == 8)
{
PORTD &= B00000011;
PORTB &= B11000000;
PORTB |= B00000100;
}
if(time_hours == 9)
{
PORTD &= B00000011;
PORTB &= B11000000;
PORTB |= B00001000;
}
if(time_hours == 10)
{
PORTD &= B00000011;
PORTB &= B11000000;
PORTB |= B00010000;
}
if(time_hours == 11)
{
PORTD &= B00000011;
PORTB &= B11000000;
PORTB |= B00100000;
}
//////////////////////////////////////////////////////////
//////////////////////////////////////////end of HOURS////
//This function will flash the minute LED 4 times
//We do the same for each minute for ranges 0-5, 5-10, etc
if(0 <= time_minutes && time_minutes < 5)
{
for(int i=0; i<4; i++)
{
PORTD |= B00000100;
delay(flash_delay);
PORTD &= B11111011;
delay(flash_delay);
}
}//end of minutes 1-5
if(5 <= time_minutes && time_minutes< 10)
{
for(int i=0; i<4; i++)
{
PORTD |= B00001000;
delay(flash_delay);
PORTD &= B11110111;
delay(flash_delay);
}
}//end of minutes 5-10
if(10 <= time_minutes && time_minutes< 15)
{
for(int i=0; i<4; i++)
{
PORTD |= B00010000;
delay(flash_delay);
PORTD &= B11101111;
delay(flash_delay);
}
}//end of minutes 10-15
if(15 <= time_minutes && time_minutes< 20)
{
for(int i=0; i<4; i++)
{
PORTD |= B00100000;
delay(flash_delay);
PORTD &= B11011111;
delay(flash_delay);
}
}//end of minutes 15-20
if(20 <= time_minutes && time_minutes< 25)
{
for(int i=0; i<4; i++)
{
PORTD |= B01000000;
delay(flash_delay);
PORTD &= B10111111;
delay(flash_delay);
}
}//end of minutes 20-25
if(25 <= time_minutes && time_minutes< 30)
{
for(int i=0; i<4; i++)
{
PORTD |= B10000000;
delay(flash_delay);
PORTD &= B01111111;
delay(flash_delay);
}
}//end of minutes 25-30
if(30 <= time_minutes && time_minutes< 35)
{
for(int i=0; i<4; i++)
{
PORTB |= B00000001;
delay(flash_delay);
PORTB &= B11111110;
delay(flash_delay);
}
}//end of minutes 30-35
if(35 <= time_minutes && time_minutes< 40)
{
for(int i=0; i<4; i++)
{
PORTB |= B00000010;
delay(flash_delay);
PORTB &= B11111101;
delay(flash_delay);
}
}//end of minutes 35-40
if(40 <= time_minutes && time_minutes< 45)
{
for(int i=0; i<4; i++)
{
PORTB |= B00000100;
delay(flash_delay);
PORTB &= B11111011;
delay(flash_delay);
}
}//end of minutes 40-45
if(45 <= time_minutes && time_minutes< 50)
{
for(int i=0; i<4; i++)
{
PORTB |= B00001000;
delay(flash_delay);
PORTB &= B11110111;
delay(flash_delay);
}
}//end of minutes 45-50
if(50 <= time_minutes && time_minutes< 55)
{
for(int i=0; i<4; i++)
{
PORTB |= B00010000;
delay(flash_delay);
PORTB &= B11101111;
delay(flash_delay);
}
}//end of minutes 50-55
if(55 <= time_minutes && time_minutes < 60)
{
for(int i=0; i<4; i++)
{
PORTB |= B00100000;
delay(flash_delay);
PORTB &= B11011111;
delay(flash_delay);
}
}//end of minutes 50-55
//////////////////////////////////////////////////////////
////////////////////////////////////////end of MINUTES////
PORTD &= B00000011;
PORTB &= B11000000;
//After the time was shown, we turn off all LEDs to save power
}//end of mode 0 (time show)
//We start mode 1 and set the hour
if(mode == 1 && !mode_was_changed)
{
//After long press, each time we press button we increase the hour by 1
time_hours = time_hours+1;
if(time_hours == 0)
{
PORTD &= B00000011;
PORTB &= B11000000;
PORTD |= B00000100;
}
if(time_hours == 1)
{
PORTD &= B00000011;
PORTB &= B11000000;
PORTD |= B00001000;
}
if(time_hours == 2)
{
PORTD &= B00000011;
PORTB &= B11000000;
PORTD |= B00010000;
}
if(time_hours == 3)
{
PORTD &= B00000011;
PORTB &= B11000000;
PORTD |= B00100000;
}
if(time_hours == 4)
{
PORTD &= B00000011;
PORTB &= B11000000;
PORTD |= B01000000;
}
if(time_hours == 5)
{
PORTD &= B00000011;
PORTB &= B11000000;
PORTD |= B10000000;
}
if(time_hours == 6)
{
PORTD &= B00000011;
PORTB &= B11000000;
PORTB |= B00000001;
}
if(time_hours == 7)
{
PORTD &= B00000011;
PORTB &= B11000000;
PORTB |= B00000010;
}
if(time_hours == 8)
{
PORTD &= B00000011;
PORTB &= B11000000;
PORTB |= B00000100;
}
if(time_hours == 9)
{
PORTD &= B00000011;
PORTB &= B11000000;
PORTB |= B00001000;
}
if(time_hours == 10)
{
PORTD &= B00000011;
PORTB &= B11000000;
PORTB |= B00010000;
}
if(time_hours == 11)
{
PORTD &= B00000011;
PORTB &= B11000000;
PORTB |= B00100000;
}
if(time_hours == 12)
{
PORTD &= B00000011;
PORTB &= B11000000;
PORTD |= B00000100;
}
}//end of mode 1 (hour set)
//Do the same for minute set
if(mode == 2 && !mode_was_changed)
{
time_minutes = time_minutes+5;
if(0 <= time_minutes && time_minutes < 5)
{
PORTD &= B00000011;
PORTB &= B11000000;
PORTD |= B00000100;
}
if(5 <= time_minutes && time_minutes < 10)
{
PORTD &= B00000011;
PORTB &= B11000000;
PORTD |= B00001000;
}
if(10 <= time_minutes && time_minutes < 15)
{
PORTD &= B00000011;
PORTB &= B11000000;
PORTD |= B00010000;
}
if(15 <= time_minutes && time_minutes < 20)
{
PORTD &= B00000011;
PORTB &= B11000000;
PORTD |= B00100000;
}
if(20 <= time_minutes && time_minutes < 25)
{
PORTD &= B00000011;
PORTB &= B11000000;
PORTD |= B01000000;
}
if(25 <= time_minutes && time_minutes < 30)
{
PORTD &= B00000011;
PORTB &= B11000000;
PORTD |= B10000000;
}
if(30 <= time_minutes && time_minutes < 35)
{
PORTD &= B00000011;
PORTB &= B11000000;
PORTB |= B00000001;
}
if(35 <= time_minutes && time_minutes < 40)
{
PORTD &= B00000011;
PORTB &= B11000000;
PORTB |= B00000010;
}
if(40 <= time_minutes && time_minutes < 45)
{
PORTD &= B00000011;
PORTB &= B11000000;
PORTB |= B00000100;
}
if(45 <= time_minutes && time_minutes < 50)
{
PORTD &= B00000011;
PORTB &= B11000000;
PORTB |= B00001000;
}
if(50 <= time_minutes && time_minutes < 55)
{
PORTD &= B00000011;
PORTB &= B11000000;
PORTB |= B00010000;
}
if(55 <= time_minutes && time_minutes < 60)
{
PORTD &= B00000011;
PORTB &= B11000000;
PORTB |= B00100000;
}
if(60 <= time_minutes && time_minutes < 65)
{
PORTD &= B00000011;
PORTB &= B11000000;
PORTD |= B00000100;
time_minutes = time_minutes+1;
}
}//end of mode 2 (minute set)
mode_was_changed = false;
power_adc_disable(); // ADC converter disabled to save power
}//end of analog below treshold
//Here we count time in order to see if the button was pressed or long pressed for mode change
if(button_pressed)
{
actual_button_counter = millis();
push_time = actual_button_counter - pressed_button_counter;
}
//Pressed for more than 1second, set hour
if(push_time > mode_change_delay && button_pressed && mode == 0)
{
mode = 1;
if(time_hours == 0)
{
PORTD &= B00000011;
PORTB &= B11000000;
PORTD |= B00000100;
}
if(time_hours == 1)
{
PORTD &= B00000011;
PORTB &= B11000000;
PORTD |= B00001000;
}
if(time_hours == 2)
{
PORTD &= B00000011;
PORTB &= B11000000;
PORTD |= B00010000;
}
if(time_hours == 3)
{
PORTD &= B00000011;
PORTB &= B11000000;
PORTD |= B00100000;
}
if(time_hours == 4)
{
PORTD &= B00000011;
PORTB &= B11000000;
PORTD |= B01000000;
}
if(time_hours == 5)
{
PORTD &= B00000011;
PORTB &= B11000000;
PORTD |= B10000000;
}
if(time_hours == 6)
{
PORTD &= B00000011;
PORTB &= B11000000;
PORTB |= B00000001;
}
if(time_hours == 7)
{
PORTD &= B00000011;
PORTB &= B11000000;
PORTB |= B00000010;
}
if(time_hours == 8)
{
PORTD &= B00000011;
PORTB &= B11000000;
PORTB |= B00000100;
}
if(time_hours == 9)
{
PORTD &= B00000011;
PORTB &= B11000000;
PORTB |= B00001000;
}
if(time_hours == 10)
{
PORTD &= B00000011;
PORTB &= B11000000;
PORTB |= B00010000;
}
if(time_hours == 11)
{
PORTD &= B00000011;
PORTB &= B11000000;
PORTB |= B00100000;
}
button_pressed = false;
mode_was_changed = true;
}
//Now we set minute
if(push_time > mode_change_delay && button_pressed && mode == 1)
{
mode = 2;
PORTD &= B00000011;
PORTB &= B11000000;
button_pressed = false;
mode_was_changed = true;
if(0 <= time_minutes && time_minutes < 5)
{
PORTD &= B00000011;
PORTB &= B11000000;
PORTD |= B00000100;
}
if(5 <= time_minutes && time_minutes < 10)
{
PORTD &= B00000011;
PORTB &= B11000000;
PORTD |= B00001000;
}
if(10 <= time_minutes && time_minutes < 15)
{
PORTD &= B00000011;
PORTB &= B11000000;
PORTD |= B00010000;
}
if(15 <= time_minutes && time_minutes < 20)
{
PORTD &= B00000011;
PORTB &= B11000000;
PORTD |= B00100000;
}
if(20 <= time_minutes && time_minutes < 25)
{
PORTD &= B00000011;
PORTB &= B11000000;
PORTD |= B01000000;
}
if(25 <= time_minutes && time_minutes < 30)
{
PORTD &= B00000011;
PORTB &= B11000000;
PORTD |= B10000000;
}
if(30 <= time_minutes && time_minutes < 35)
{
PORTD &= B00000011;
PORTB &= B11000000;
PORTB |= B00000001;
}
if(35 <= time_minutes && time_minutes < 40)
{
PORTD &= B00000011;
PORTB &= B11000000;
PORTB |= B00000010;
}
if(40 <= time_minutes && time_minutes < 45)
{
PORTD &= B00000011;
PORTB &= B11000000;
PORTB |= B00000100;
}
if(45 <= time_minutes && time_minutes < 50)
{
PORTD &= B00000011;
PORTB &= B11000000;
PORTB |= B00001000;
}
if(50 <= time_minutes && time_minutes < 55)
{
PORTD &= B00000011;
PORTB &= B11000000;
PORTB |= B00010000;
}
if(55 <= time_minutes && time_minutes < 60)
{
PORTD &= B00000011;
PORTB &= B11000000;
PORTB |= B00100000;
}
if(60 <= time_minutes && time_minutes < 65)
{
PORTD &= B00000011;
PORTB &= B11000000;
PORTD |= B00000100;
}
}
//exit set mode and turn all LEDs off and get back to mode 0
if(push_time > mode_change_delay && button_pressed && mode == 2)
{
mode = 0;
PORTD &= B00000011;
PORTB &= B11000000;
button_pressed = false;
mode_was_changed = true;
}
}//END OF VOID LOOP
ISR(PCINT1_vect)
{
power_adc_enable(); // turn back on the ADC converter in order to be able to detech the button push
}
