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 * Copyright (c) 2014 - 2019, Nordic Semiconductor ASA
 *
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice, this
 *    list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form, except as embedded into a Nordic
 *    Semiconductor ASA integrated circuit in a product or a software update for
 *    such product, must reproduce the above copyright notice, this list of
 *    conditions and the following disclaimer in the documentation and/or other
 *    materials provided with the distribution.
 *
 * 3. Neither the name of Nordic Semiconductor ASA nor the names of its
 *    contributors may be used to endorse or promote products derived from this
 *    software without specific prior written permission.
 *
 * 4. This software, with or without modification, must only be used with a
 *    Nordic Semiconductor ASA integrated circuit.
 *
 * 5. Any software provided in binary form under this license must not be reverse
 *    engineered, decompiled, modified and/or disassembled.
 *
 * THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS
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 * DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE
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 */
/** @file
 * @defgroup nrf_adc_example main.c
 * @{
 * @ingroup nrf_adc_example
 * @brief ADC Example Application main file.
 *
 * This file contains the source code for a sample application using ADC.
 *
 * @image html example_board_setup_a.jpg "Use board setup A for this example."
 */

#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include <string.h>
#include "nrf.h"
#include "app_error.h"
#include "app_util_platform.h"
#include <nrfx_saadc.h>
#include <nrf_gpio.h>


#define BUFFER_SIZE 1
#define LED3 NRF_GPIO_PIN_MAP(0, 16)
#define LED4 NRF_GPIO_PIN_MAP(0, 15)
#define A0          NRF_GPIO_PIN_MAP(1, 12)
#define A8          NRF_GPIO_PIN_MAP(0, 4)
static nrf_saadc_value_t adcSampleBuffer[BUFFER_SIZE];
int counter = 0;
int counter1 = 0;
volatile int voltFlag = 0;
volatile nrfx_err_t err = 0;
volatile int calibrationFlag = 0;
nrfx_saadc_config_t saadc_config = NRFX_SAADC_DEFAULT_CONFIG;
nrf_saadc_channel_config_t saadc_channel_config = NRFX_SAADC_DEFAULT_CHANNEL_CONFIG_SE(A8);


void nrfx_saadc_event_handler(nrfx_saadc_evt_t const* p_event){

    if (p_event->type == NRFX_SAADC_EVT_CALIBRATEDONE)
    {
       counter = nrfx_saadc_buffer_convert(adcSampleBuffer, BUFFER_SIZE);
       calibrationFlag = 1;
    }else
    {
      counter = nrfx_saadc_buffer_convert(adcSampleBuffer, BUFFER_SIZE);
      voltFlag = 1;
    }

}

int main(void)
{
    nrf_gpio_cfg_output(LED3);
    nrf_gpio_cfg_output(LED4);
    counter = nrfx_saadc_init(&saadc_config, nrfx_saadc_event_handler) + 1;
    counter = nrfx_saadc_channel_init(0, &saadc_channel_config) + 1;
    counter = nrfx_saadc_calibrate_offset();

    while(calibrationFlag == 0){
    }
   
    int durdle = 0;
    while(1){
        counter = nrfx_saadc_sample();
        nrf_gpio_pin_toggle(LED4);
        while(voltFlag == 0){
            err++;
            err %= 19;
            durdle ++;
            durdle %=19;
        }

        counter1 = (counter1 + 1)%1000;
        if(counter1 == 0){
            nrf_gpio_pin_toggle(LED3);
        }
        voltFlag = 0;
    }
    return 0;
}


/** @} */