UV Heartbeat

/*
 * LED_Flash.c
 *
 * Created: 12/26/2012 9:21:09 PM
 *  Author: grist.carrigafoyl


 Simple program to emulate a heartbeat using LEDs.
 PWM output on PB0 (pin 5)
 Input for mode switching on PB3 (pin 2)


 */

#define F_CPU 8000000UL  //  8Mhz

#include <avr/io.h>
#include <avr/interrupt.h>
#include <util/delay.h>

// Prototypes
int main();
void fullOn();
void heartBeat();
void beatOne();
void beatTwo();

int main(void)
{

    char button_state;
    // Set PortB to output, except our switch pin (PB3)
    DDRB = 0b11110111;
    // Turn on the pullup resistor
    PORTB = _BV(PB3);
    // Initialise PWM
    TCCR0A = 0b10000011; // Fast PWM 8 bit
    TCCR0B = 0b00000001; // No prescaler
    TCNT0 = 0;  // Reset TCNT0


    while(1) {
        //fadeUpAndDown(5);
        //fullOn();
        button_state = ~PINB & _BV(PB3);
        if (button_state == 0) {
            heartBeat();
        } else {
            fullOn();
        }
    }
}


void fullOn()
{
    int ms_delay_time = 250;
    OCR0A = 255;
    _delay_ms(ms_delay_time);
}

void heartBeat()
{  // Run through a single heartbeat
    // Numbers obtained from http://pastebin.com/FbjcsQM9

    int beatOneGap = 150; // ms
    int beatTwoGap = 546; // ms

    // Play it
    beatOne();
    _delay_ms(beatOneGap);
    beatTwo();
    _delay_ms(beatTwoGap);

}

void beatOne()
{ // Split these as having both data sets in the same function was hitting memory problems
    char dataOne[] = {
        9, 18, 28, 37, 46, 48,
        51, 55, 60, 64, 85, 107, 95, 83, 71, 102, 133, 163, 194, 224, 255, 255,
        255, 255, 255, 255, 255, 255, 233, 211, 189, 150, 112, 74, 36, 41, 46, 51,
        56, 71, 87, 102, 117, 133, 129, 126, 123, 120, 116, 113, 110, 107, 103, 100,
        97, 92, 87, 82, 77, 71, 66, 61, 56, 51, 51, 51, 51, 51, 51, 48,
        46, 43, 41, 38, 36, 33, 31, 28, 26, 24, 22, 19, 17, 15, 13, 13,
        13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 10, 6, 3, 0, 2,
        4, 7, 9, 11, 13, 16, 18

    };
    for (int i=0;i<sizeof(dataOne);i++) {
        OCR0A = dataOne[i];
        _delay_ms(1);
    }
}

void beatTwo()
{ // Split these as having both data sets in the same function was hitting memory problems
        char dataTwo[] = {
        13, 19, 26,
        32, 38, 64, 89, 115, 143, 171, 199, 213, 227, 241, 255, 255, 255, 255, 255,
        255, 255, 214, 173, 133, 92, 51, 49, 48, 47, 45, 43, 36, 28, 20, 54,
        87, 120, 153, 166, 181, 194, 214, 235, 255, 255, 255, 255, 255, 255, 255, 217,
        179, 140, 124, 108, 92, 77, 69, 61, 54, 46, 40, 33, 27, 20, 18, 13,
        14, 12, 10, 8, 6, 4, 2, 0, 2, 4, 6, 8, 10, 12, 14, 16,
        18, 20, 20, 20, 20, 19, 19, 19, 18, 18, 18, 18, 17, 17, 17, 16,
        16, 16, 16, 15, 15, 15, 14, 14, 13, 13, 13, 12, 12, 11, 11, 11,
        10, 10, 10, 9, 9, 9, 9, 8, 8, 8, 8, 7, 7, 7, 6, 6,
        6, 6, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2,
        1, 1, 1
    };
    for (int i=0;i<sizeof(dataTwo);i++) {
        OCR0A = dataTwo[i];
        _delay_ms(1);
    }
}