arduino_board_analog.h

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/*
 * Copyright (C) 2023 Otto-von-Guericke-Universität Magdeburg
 *
 * This file is subject to the terms and conditions of the GNU Lesser
 * General Public License v2.1. See the file LICENSE in the top level
 * directory for more details.
 */
 
#pragma once
 
#include "periph/adc.h"
#include "arduino_iomap.h"
 
#ifdef __cplusplus
extern "C" {
#endif
 
#ifdef DOXYGEN
#define ARDUINO_ANALOG_PIN_LAST /* board specific number */
#endif /* DOXYGEN */
 
/* A board may not have any analog pins. But if it has any, it MUST define
 * ARDUINO_ANALOG_PIN_LAST. */
#if !defined(ARDUINO_ANALOG_PIN_LAST) && (defined(ARDUINO_A0) || defined(ARDUINO_A1))
#  error "ARDUINO_PIN_LAST undefined despite analog pins available"
#endif
 
/* A board not having A0 and A1, but having e.g. A3 would also trigger this.
 * Extend as needed when porting new boards. */
#if defined(ARDUINO_ANALOG_PIN_LAST) && !defined(ARDUINO_A0) && !defined(ARDUINO_A1)
#  error "ARDUINO_PIN_LAST defined but no analog pins available"
#endif
 
#if defined(ARDUINO_ANALOG_PIN_LAST) || defined(DOXYGEN)
static const adc_t arduino_analog_map[] = {
#ifndef DOXYGEN
#ifdef ARDUINO_A0
    ARDUINO_A0,
#elif ARDUINO_ANALOG_PIN_LAST > 0
    ADC_UNDEF,
#endif
#ifdef ARDUINO_A1
    ARDUINO_A1,
#elif ARDUINO_ANALOG_PIN_LAST > 1
    ADC_UNDEF,
#endif
#ifdef ARDUINO_A2
    ARDUINO_A2,
#elif ARDUINO_ANALOG_PIN_LAST > 2
    ADC_UNDEF,
#endif
#ifdef ARDUINO_A3
    ARDUINO_A3,
#elif ARDUINO_ANALOG_PIN_LAST > 3
    ADC_UNDEF,
#endif
#ifdef ARDUINO_A4
    ARDUINO_A4,
#elif ARDUINO_ANALOG_PIN_LAST > 4
    ADC_UNDEF,
#endif
#ifdef ARDUINO_A5
    ARDUINO_A5,
#elif ARDUINO_ANALOG_PIN_LAST > 5
    ADC_UNDEF,
#endif
#ifdef ARDUINO_A6
    ARDUINO_A6,
#elif ARDUINO_ANALOG_PIN_LAST > 6
    ADC_UNDEF,
#endif
#ifdef ARDUINO_A7
    ARDUINO_A7,
#elif ARDUINO_ANALOG_PIN_LAST > 7
    ADC_UNDEF,
#endif
#ifdef ARDUINO_A8
    ARDUINO_A8,
#elif ARDUINO_ANALOG_PIN_LAST > 8
    ADC_UNDEF,
#endif
#ifdef ARDUINO_A9
    ARDUINO_A9,
#elif ARDUINO_ANALOG_PIN_LAST > 9
    ADC_UNDEF,
#endif
#ifdef ARDUINO_A10
    ARDUINO_A10,
#elif ARDUINO_ANALOG_PIN_LAST > 10
    ADC_UNDEF,
#endif
#ifdef ARDUINO_A11
    ARDUINO_A11,
#elif ARDUINO_ANALOG_PIN_LAST > 11
    ADC_UNDEF,
#endif
#ifdef ARDUINO_A12
    ARDUINO_A12,
#elif ARDUINO_ANALOG_PIN_LAST > 12
    ADC_UNDEF,
#endif
#ifdef ARDUINO_A13
    ARDUINO_A13,
#elif ARDUINO_ANALOG_PIN_LAST > 13
    ADC_UNDEF,
#endif
#ifdef ARDUINO_A14
    ARDUINO_A14,
#elif ARDUINO_ANALOG_PIN_LAST > 14
    ADC_UNDEF,
#endif
#ifdef ARDUINO_A15
    ARDUINO_A15,
#elif ARDUINO_ANALOG_PIN_LAST > 15
    ADC_UNDEF,
#endif
#endif /* DOXYGEN */
};
#endif /* defined(ARDUINO_ANALOG_PIN_LAST) */
 
#ifdef __cplusplus
}
#endif