/* 
 * File:   main.c
 * Author: Sebastian H. Gabrielli
 *
 * Created on March 6, 2024, 12:34 PM
 */
#include "header.h"
#define RTC_PERIOD (511)
#define DELAY_TIME 1000
#include <avr/io.h>
#include <avr/interrupt.h>
#include <util/delay.h>
#include <string.h>
#include <stdbool.h>

#define F_CPU 4E6

#include <stdio.h>
#include <stdlib.h>
#include "uart.h"
#include <util/delay.h>

void sensor_init(void) {
    /* Disable digital input buffer */ 
}

void ADC0_init(void) {
    PORTD.PIN6CTRL &= ~PORT_ISC_gm;
    PORTD.PIN6CTRL |= PORT_ISC_INPUT_DISABLE_gc;
    PORTD.PIN6CTRL &= PORT_PULLUPEN_bm;
       
    ADC0.CTRLC = ADC_PRESC_DIV4_gc;
    VREF.ADC0REF = VREF_REFSEL_VDD_gc; /* Internal reference */
    ADC0.CTRLA = ADC_ENABLE_bm /* ADC Enable: enabled */
            | ADC_RESSEL_10BIT_gc; /* 10-bit mode */
    /* Select ADC channel */
    ADC0.MUXPOS = ADC_MUXPOS_AIN6_gc;
}


uint16_t ADC0_read(void) {
    /* Start ADC conversion */
    ADC0.COMMAND = ADC_STCONV_bm;
    /* Wait until ADC conversion done */
    while (!(ADC0.INTFLAGS & ADC_RESRDY_bm)) {
        ;
    }
    /* Clear the interrupt flag by writing 1: */
    ADC0.INTFLAGS = ADC_RESRDY_bm;
    return ADC0.RES;
}

bool ADC0_conversationDone(void) {
    if (ADC0.INTFLAGS && ADC_RESRDY_bm) {
        return true;
    } else {
        return false;
    }

}

int main() {
    sensor_init();
    ADC0_init();
    init_uart((uint16_t)9600);
    stdout = &USART_stream;

    while (1) {
        adcVal = ADC0_read();
        VREF.ADC0REF = VREF_REFSEL_VDD_gc;
        printf("The values: \n%u , %u\n",VREF_REFSEL_VDD_gc , adcVal);
    }
}