#include <avr/io.h>
#include <avr/pgmspace.h>
#include <avr/eeprom.h>
#include <avr/delay.h>
#include <stdbool.h>

#include "lcdrunn.h"

#define MOSI PB5
#define MISO PB6
#define SCK PB7
#define CS PB4
#define PORT_SPI  PORTB
#define CS_HIGH PORTA |= (1 << CS);
#define CS_LOW PORTA &= ~(1 << CS)

#define EEMEM __attribute__((section(".eeprom")))


 void InitSpi()
   {
       DDRB |= (1 << MOSI) | (1 << SCK) | (1 << CS) ;
       // Define the following pins as output
       //DDRA |= (1 << CS);

       SPCR = (1<<SPE)|(1<<MSTR)|(1<<SPR0)|(SPIE);
       SPSR |= (1 << SPI2X);

   }

//wysyłanie do adc
void SendSpi(uint8_t bajt)
{
	SPDR = bajt;
	while( !(SPSR & (1 << SPIF)) );

}

//odbiór z adc
uint8_t ReceiveSpi( void )
{
    while( !(SPSR & (1 << SPIF)) );
	return SPDR;
}

int main(void)
{
    lcd_init(); //inicjalizacja wyswietlacza
    InitSpi();
    uint8_t send[3] = {0x0C, 0x00, 0x00};
    CS_HIGH;
	while(1)
	{
	    lcd_cls();

        uint16_t sum = 978;
        uint8_t wyn1 = 12;
        uint8_t wyn2 = 21;

        CS_LOW;
        SendSpi(send[0]);
        ReceiveSpi();
        SendSpi(send[1]);
        wyn1 = ReceiveSpi();
        wyn1 = wyn1 & 0b00111111; // albo 0b00011..
        SendSpi(send[2]);
        wyn2 = ReceiveSpi();
        CS_HIGH;

        _delay_us(20);
        sum = wyn1;
        sum = sum << 8;
        sum |= wyn2;

        lcd_int(sum);
        _delay_ms(1000);
	}

}