adc.h

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/*
 * MIT License
 *
 * Copyright (c)  2021 Society of Robotics and Automation
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */
 
#ifndef _ADC_H
#define _ADC_H
 
#include <stdio.h>
#include <stdlib.h>
 
#include "esp_adc/adc_oneshot.h"
#include "esp_adc/adc_cali.h"
#include "esp_adc/adc_cali_scheme.h"
 
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "freertos/event_groups.h"
 
#include "esp_log.h"
#include "esp_err.h"
#include "pin_defs.h"
 
#define ADC_ATTEN ADC_ATTEN_DB_11
#define ADC_BITWIDTH_LEN ADC_BITWIDTH_12
 
typedef struct
{
    adc_oneshot_unit_handle_t adc1_handle; 
    adc_cali_handle_t adc1_cali_handle[5]; 
    bool do_calib[5]; 
} adc_obj_t;
 
typedef adc_obj_t *adc_handle_t;
 
esp_err_t enable_adc1(adc_obj_t** adc_obj);
 
int read_adc(adc_handle_t adc_handle, int gpio);
 
#endif