adc_arch_private.h

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/*
 * Copyright (C) 2022 Gunar Schorcht
 *
 * 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
 
#ifdef __cplusplus
extern "C" {
#endif
 
#include "driver/adc_types_legacy.h"
#include "periph/gpio.h"
#include "soc/soc_caps.h"
 
#ifndef DOXYGEN     /* hide implementation details from doxygen */
 
#define RTCIO_GPIO(n)   n           /* n-th RTCIO GPIO */
#define RTCIO_NA        UINT8_MAX   /* RTCIO pin not available */
 
#define ADC_UNIT_INV        ((adc_unit_t)255)                   /* Invalid ADC unit ID */
#define ADC_CHANNEL_INV     SOC_ADC_MAX_CHANNEL_NUM             /* Invalid ADC channel ID */
 
#define ADC1_CHANNEL_MAX    (SOC_ADC_CHANNEL_NUM(ADC_UNIT_1))   /* Number of channels of ADC1 */
#define ADC2_CHANNEL_MAX    (SOC_ADC_CHANNEL_NUM(ADC_UNIT_2))   /* Number of channels of ADC2 */
#define ADC_CHANNEL_MAX(u)  ((u == ADC_UNIT_1) ? ADC1_CHANNEL_MAX : ADC2_CHANNEL_MAX)
 
typedef struct {
    uint8_t         rtc_gpio;      
    gpio_t          gpio;          
    adc_unit_t      adc_ctrl;      
    adc_channel_t   adc_channel;   
    char*           pad_name;      
} _adc_hw_desc_t;
 
extern const _adc_hw_desc_t _adc_hw[];
 
extern const gpio_t _gpio_rtcio_map[];
 
#endif /* !DOXYGEN */
 
#ifdef __cplusplus
}
#endif