//#ifdef F_CPU
//#undef F_CPU
//#define F_CPU 1000000L
//#endif
#include <avr/io.h>
#include <avr/interrupt.h>
#include <avr/sleep.h>
#include <avr/power.h> // Power management
#define CHARLIE_A 0
#define CHARLIE_B 1
#define CHARLIE_C 2
#define CHARLIE_D 3
volatile int numLoop = 1;
byte randomLed = 1;
byte currLed = 1;
void setup()
{
DDRB &= ~(1 << PB4); //PCINT4, where a button is attached (pulled up)
PORTB |= (1 << PB4); //Pull up using software
ADCSRA |= (1<<ADEN); //Enable ADC
randomSeed (analogRead (0)); // randomize
ADCSRA &= ~(1<<ADEN); //Disable ADC, saves ~230uA
cli(); //Deactivate Interrupts as long as I change Bits
//MCUCR |= 1<<ISC01; // INT0 mode = FALLING
GIMSK |= (1<<PCIE); // Enable Pin Change Interrupts
PCMSK |= (1 << PB4); // Use PB4 as interrupt pin
sei(); //Activate Interrupts
}
void loop()
{
if(numLoop>5)
numLoop=1;
switch(numLoop)
{
case (1):
for(int i =8; i>=1; i--)
ledSeq(i, 10*i+15);
break;
case (2):
for(int i =8; i>=1; i--)
ledSeq(i, 2*i+15);
break;
case (3):
for(int i =1; i<=8; i++)
ledSeq(i, 10*i+15);
break;
case (4):
for(int i =1; i<=8; i++)
ledSeq(i, 2*i+15);
break;
case (5):
for (int j= 1; j<=20; j++)
{
for(int i=8; i>=1; i--)
{
randomLed = random (0,8);
if (currLed != i)
{
ledSeq(randomLed, 50*i+30);
currLed = i;
}
else
{
if (i>=8)
ledSeq(randomLed-1, 50*i+30);
else
ledSeq(randomLed+1, 50*i+30);
}
//delay(3);
}
}
pinMode(CHARLIE_A, INPUT); //row 4
pinMode(CHARLIE_B, INPUT); //row 4
pinMode(CHARLIE_C, INPUT); //row 4
pinMode(CHARLIE_D, INPUT); //row 4
goToSleep();
break;
}
}
ISR(PCINT0_vect)
{
//Since the PCINTn triggers on both rising and falling edge let's just looks for rising edge
//i.e. pin goes to 5v
// byte pinState;
// pinState = (PINB >> PB4)& 1; //PINB is the register to read the state of the pins
// if (pinState <1) //look at the pin state on the pin PINB register- returns 1 if high
// numLoop++;
static unsigned long last_interrupt_time = 0;
unsigned long interrupt_time = millis();
// If interrupts come faster than 200ms, assume it's a bounce and ignore
if (interrupt_time - last_interrupt_time > 200)
{
numLoop++;
}
last_interrupt_time = interrupt_time;
}
void goToSleep ()
{
set_sleep_mode (SLEEP_MODE_PWR_DOWN);
ADCSRA = 0; // turn off ADC
power_all_disable (); // power off ADC, Timer 0 and 1, serial interface
noInterrupts (); // timed sequence coming up
//resetWatchdog (); // get watchdog ready
sleep_enable (); // ready to sleep
interrupts (); // interrupts are required now
sleep_cpu (); // sleep
sleep_disable (); // precaution
power_all_enable (); // power everything back on
} // end of goToSleep
void ledSeq(byte i, int timeOn) {
switch(i)
{
case 1:
// LIGHT D1
//turn on LED L1
pinMode(CHARLIE_A, INPUT); //row 1
digitalWrite(CHARLIE_A, LOW);
pinMode(CHARLIE_B, OUTPUT); //row 2
digitalWrite(CHARLIE_B, LOW);
pinMode(CHARLIE_C, OUTPUT); //row 3
digitalWrite(CHARLIE_C, HIGH);
pinMode(CHARLIE_D, INPUT); //row 4
digitalWrite(CHARLIE_D, LOW);
delay(timeOn);
break;
case 2:
// LIGHT D2
//turn on LED L2
pinMode(CHARLIE_A, OUTPUT); //row 1
digitalWrite(CHARLIE_A, LOW);
pinMode(CHARLIE_B, OUTPUT); //row 2
digitalWrite(CHARLIE_B, HIGH);
pinMode(CHARLIE_C, INPUT); //row 3
digitalWrite(CHARLIE_C, LOW);
pinMode(CHARLIE_D, INPUT); //row 4
digitalWrite(CHARLIE_D, LOW);
delay(timeOn);
break;
//
// // LIGHT D3
case 3:
pinMode(CHARLIE_A, OUTPUT); //row 1
digitalWrite(CHARLIE_A, HIGH);
pinMode(CHARLIE_B, OUTPUT); //row 2
digitalWrite(CHARLIE_B, LOW);
pinMode(CHARLIE_C, INPUT); //row 3
digitalWrite(CHARLIE_C, LOW);
pinMode(CHARLIE_D, INPUT); //row 4
digitalWrite(CHARLIE_D, LOW);
delay(timeOn);
break;
// // LIGHT D4
case 4:
pinMode(CHARLIE_A, INPUT); //row 1
digitalWrite(CHARLIE_A, LOW);
pinMode(CHARLIE_B, OUTPUT); //row 2
digitalWrite(CHARLIE_B, HIGH);
pinMode(CHARLIE_C, OUTPUT); //row 3
digitalWrite(CHARLIE_C, LOW);
pinMode(CHARLIE_D, INPUT); //row 4
digitalWrite(CHARLIE_D, LOW);
delay(timeOn);
break;
//
//
// // LIGHT D5
case 5:
pinMode(CHARLIE_A, OUTPUT); //row 1
digitalWrite(CHARLIE_A, LOW);
pinMode(CHARLIE_B, INPUT); //row 2
digitalWrite(CHARLIE_B, LOW);
pinMode(CHARLIE_C, OUTPUT); //row 3
digitalWrite(CHARLIE_C, HIGH);
pinMode(CHARLIE_D, INPUT); //row 4
digitalWrite(CHARLIE_D, LOW);
delay(timeOn);
break;
//
// // LIGHT D6
case 6:
pinMode(CHARLIE_A, OUTPUT);
digitalWrite(CHARLIE_A, HIGH);
pinMode(CHARLIE_B, INPUT);
digitalWrite(CHARLIE_B, LOW);
pinMode(CHARLIE_C, OUTPUT);
digitalWrite(CHARLIE_C, LOW);
pinMode(CHARLIE_D, INPUT); //row 3
digitalWrite(CHARLIE_D, LOW);
delay(timeOn);
break;
//
// // LIGHT D7
case 7:
pinMode(CHARLIE_A, INPUT);
digitalWrite(CHARLIE_A, LOW);
pinMode(CHARLIE_B, INPUT);
digitalWrite(CHARLIE_B, LOW);
pinMode(CHARLIE_C, OUTPUT);
digitalWrite(CHARLIE_C, LOW);
pinMode(CHARLIE_D, OUTPUT); //row 3
digitalWrite(CHARLIE_D, HIGH);
delay(timeOn);
break;
//
//
// // LIGHT D8
case 8:
pinMode(CHARLIE_A, INPUT);
digitalWrite(CHARLIE_A, LOW);
pinMode(CHARLIE_B, INPUT);
digitalWrite(CHARLIE_B, LOW);
pinMode(CHARLIE_C, OUTPUT);
digitalWrite(CHARLIE_C, HIGH);
pinMode(CHARLIE_D, OUTPUT); //row 3
digitalWrite(CHARLIE_D, LOW);
delay(timeOn);
break;
}
}
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