adc_arch.h

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/*
 * SPDX-FileCopyrightText: 2022 Gunar Schorcht
 * SPDX-License-Identifier: LGPL-2.1-only
 */
 
#pragma once

 
#ifdef __cplusplus
extern "C" {
#endif
 
#include "periph/adc.h"
#include "periph/gpio.h"
 
#include "driver/adc.h"
#include "driver/adc_types_legacy.h"

typedef enum {
    ADC_ATTENUATION_0_DB = ADC_ATTEN_DB_0,    
    ADC_ATTENUATION_3_DB = ADC_ATTEN_DB_2_5,  
    ADC_ATTENUATION_6_DB = ADC_ATTEN_DB_6,    
    ADC_ATTENUATION_12_DB = ADC_ATTEN_DB_12,  
} adc_attenuation_t;

int adc_set_attenuation(adc_t line, adc_atten_t atten);

int adc_raw_to_voltage(adc_t line, int sample, int *voltage);
 
#ifdef __cplusplus
}
#endif