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

#include "global.h"
#include "shift_register.h"
#include "uart.h"
#include "ds1307.h"
#include "adc.h"
#include "ldr.h"
#include "pwm.h"

volatile uint8_t uart_str_complete = 0;
volatile char uart_buffer[UART_MAXSTRLEN + 1] = "";

volatile uint8_t flag_50ms;
volatile uint8_t flag_1sec;

ISR(TIMER0_COMPA_vect)
{

	static uint8_t millisekunden = 0;
	static uint8_t sekunden = 0;

	if (millisekunden++ == 5)
	{
		//TOGL(PORTC, PC0);
		millisekunden = 0;
		sekunden++;
		flag_50ms = 1;
	}

	if (sekunden == 20)
	{
		sekunden = 0;
		flag_1sec = 1;
	}
}


ISR(USART_RX_vect)
{
	uart_str_complete = UART_rx_str();
}

void init_timer0(void)
{
	// Timer0 initialisieren.
	TCCR0A = (1 << WGM01); 		// CTC Modus (Clear Timer on Compare)
	TCCR0B = (1 << CS02 | 1 << CS00);  		// Prescaler: 1024
	OCR0A = 180-1; 				// Zaehlwert auf 180 setzen
	TIMSK0 |= (1 << OCIE0A);	// Timer Interrupt Maske aktivieren
}

int8_t UART_bla(void)
{
	if (uart_str_complete)
	{
		uart_str_complete = 0;
		if (uart_buffer[0] == 'L' && uart_buffer[1] == 'E' && uart_buffer[2] == 'D'
		 && uart_buffer[3] >= 0x1 && uart_buffer[3] <= 0xf)
		{
			return uart_buffer[3];
		}

		return -1;
	}
	return 0;
}

int main(void)
{
	uint8_t toggle = 0,
			led = 1;
	int8_t input = 0;
	flag_50ms = 0;
	flag_1sec = 0;

	//init_timer0();
	PWM_init_timer();
	//shiftReg_Init();
	ADC_init();
	UART_init(BAUD_RATE, (char *) uart_buffer);

	LED_DDR = (1 << LED_PIN);
	LED_PORT &= ~(1 << LED_PIN);

	sei();

	//UART_tx_str("\n### QLOCKTWO ###\n");
	/*
	t_TIME date;
	date.seconds = 43; // 0100 0011
	date.minutes = 10; // 0001 0000
	date.hours = 10;
	date.mode = MODE_24;
	date.ampm = PM;    // 0001 0000
	date.weekday = 1;
	date.day = 19;	  // 0001 1001
	date.month = 3;  // 0000 0011
	date.year = 11; // 0001 0001


	int err = DS1307_init(date, DS1307_SQWE_ON, DS1307_1HZ, DS1307_OUT_H);
	if (err)
		TOGL(LED_PORT, LED_PIN);


	uint8_t ds1307_date[8] = {0,0,0,0,0,0,0,0};
	int err = DS1307_read(ds1307_date, 8, 0);
	if (err)
		TOGL(LED_PORT, LED_PIN);

	//UART_tx_str("\nread\n");
	for (int byte = 0; byte < 8; byte++)
	{
		UART_tx_char(BCD_TO_INT(ds1307_date[byte]));
	}
	UART_tx_char('\n');
*/
	uint8_t status;
	while(1)
	{
		PWM_update();
		status = PWM_get_status();
		/*
		if (status)
			SET(LED_PORT, LED_PIN);
		else
			CLR(LED_PORT, LED_PIN);
		*/
		/*
		UART_tx_char((ldr / 100) & 0xff);
		UART_tx_char((ldr % 100) & 0xff);
		UART_tx_char('\n');

		_delay_ms(100);
		*/

	}

	return 0;
}