/*
 * lcd+lm35.c
 *
 * Created: 2016-06-10 00:04:53
 * Author : Pat
 */

#define F_CPU 1000000L
#include <avr/delay.h>
#include <avr/io.h>
#include <string.h>
#include <avr/interrupt.h>


/****************************************************************************************************
Podłączenie pinów

LCD

vss		GND
vdd		Vcc
v0		potencjometr
rs		PC5
rw		PC6
e		PC7
D0...D7		PB0...PB7
A		Vcc
K		GND

LM35

Vo		PA5

*****************************************************************************************************/

/*LCD function declarations */
void LCD_send_command(unsigned char cmnd);
void LCD_send_data(unsigned char data);
void LCD_init();
void LCD_goto(unsigned char y, unsigned char x);
void LCD_print(char *string);

#define LCD_DATA_PORT	PORTB
#define LCD_DATA_DDR	DDRB
#define LCD_DATA_PIN	PINB

#define LCD_CNTRL_PORT	PORTC
#define LCD_CNTRL_DDR	DDRC
#define LCD_CNTRL_PIN	PINC

#define LCD_RS_PIN		5
#define LCD_RW_PIN		6
#define LCD_ENABLE_PIN  7

#define SET_HOUR		3
#define SET_MINUTE		4

//volatile zmienna=ADMUX;

int main(void)
{


    init_ADC();

	init_timer();

    LCD_init();
    //LCD_goto(2,1);
    //LCD_print("Nap: ");
	//LCD_goto(1,1);
	//LCD_print("Temp:");
	sei();

    LCD_CNTRL_PORT = (1<<SET_HOUR | 1<<SET_MINUTE);
	//ADMUX |=(1<<MUX0)|(1<<MUX2)|(1<<MUX1);

    while (1)
    {
    }
}

ISR(TIMER0_OVF_vect)
{
	float pomiar, volty;
	float pomiar_lm;
	char str[8], str1[8];
	char str_lm[8];
	ADCSRA |= (1 << ADSC); // rozpocznij przetwarzanie

	while(ADCSRA & (1<<ADSC));   // czekaj na koniec przetwarzania



		volty = ADC;
		volty *= 0.0049; // bity na volty


		pomiar=volty-2.3 ; // volty na stopnie(-Vw0)
		pomiar/=0.0100;     //0.01V/1 C
		_delay_ms(500);

	    ADMUX^=(1<<MUX0);


		ADCSRA |= (1 << ADSC); // rozpocznij przetwarzanie

		while(ADCSRA & (1<<ADSC));   // czekaj na koniec przetwarzania
		pomiar_lm=ADCW;
		pomiar_lm*=0.0049;
		pomiar_lm*=100;
		_delay_ms(500);





	dtostrf(volty, 8, 2, str);
	dtostrf(pomiar, 8, 2, str1);
	dtostrf(pomiar_lm, 8, 2, str_lm);

	LCD_goto(1,6);
	LCD_print(str1);

	LCD_goto(2,6);
	LCD_print(str);

	LCD_goto(1,15);
	LCD_print("*C");

	LCD_goto(2,1);
	LCD_print(str_lm);

	_delay_ms(500);


	TCNT0 = 255;
}


void init_timer (void)
{
	//Inicjalizacja Timera
	TIMSK |= (1<<TOIE0) | (1<<TOIE1); //Przerwanie overflow przepełnienie timera
	TCCR0 |= (1<<CS02) | (1<<CS00) ; // źródłem CLK, preskaler 1024 (~1000 Hz)/0.001s
	TCNT0 = 255; //Początkowa wartość licznika
}

void init_ADC (void)
{
	ADMUX |= (1 << MUX0);  // wybor wejscia dla przetwornika (ADC5-PA5)
	ADMUX |= (1 << MUX2);
	//
	//ADMUX |= (1 << MUX0);  // wybor wejscia dla przetwornika (ADC5-PA7)
	//ADMUX |= (1 << MUX2);
	//ADMUX |= (1 << MUX1);
	//

	ADMUX |= (1 << REFS0);  // ustaw wewnetrzne napiecie odniesienia na AVCC

	ADCSRA |= (1 << ADPS2); // wybór czestotliwosci pracy przetwornika preskaler=128
	ADCSRA |= (1 << ADPS1);
	ADCSRA |= (1 << ADPS0);

	ADCSRA |= (1<<ADIE);   //uruchomienie zgłaszania przerwań

	DDRA &= ~(1<<PA5);     //PA5 jak wejście
	//
	DDRA &= ~(1<<PA7);     //PA7 jak wejście
	//
	ADCSRA |= (1 <<ADEN);  // zezwolenie na prace ADC
}



void LCD_send_command(unsigned char cmnd)
{
	LCD_DATA_PORT = cmnd;
	LCD_CNTRL_PORT &= ~(1<<LCD_RW_PIN);
	LCD_CNTRL_PORT &= ~(1<<LCD_RS_PIN);

	LCD_CNTRL_PORT |= (1<<LCD_ENABLE_PIN);
	_delay_us(2);
	LCD_CNTRL_PORT &= ~(1<<LCD_ENABLE_PIN);
	_delay_us(100);
}

void LCD_send_data(unsigned char data)
{
	LCD_DATA_PORT = data;
	LCD_CNTRL_PORT &= ~(1<<LCD_RW_PIN);
	LCD_CNTRL_PORT |= (1<<LCD_RS_PIN);

	LCD_CNTRL_PORT |= (1<<LCD_ENABLE_PIN);
	_delay_us(2);
	LCD_CNTRL_PORT &= ~(1<<LCD_ENABLE_PIN);
	_delay_us(100);
}

void LCD_init()
{
	LCD_CNTRL_DDR = 0xFF;
	LCD_CNTRL_PORT = 0x00;
	LCD_DATA_DDR = 0xFF;
	LCD_DATA_PORT = 0x00;

	_delay_ms(10);
	LCD_send_command(0x38);
	LCD_send_command(0x0C);
	LCD_send_command(0x01);
	_delay_ms(10);
	LCD_send_command(0x06);
}

void LCD_goto(unsigned char y, unsigned char x)
{
	unsigned char firstAddress[] = {0x80,0xC0,0x94,0xD4};

	LCD_send_command(firstAddress[y-1] + x-1);
	_delay_ms(10);
}

void LCD_print(char *string)
{
	unsigned char i=0;

	while(string[i]!=0)
	{
		LCD_send_data(string[i]);
		i++;
	}
}