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adc_types.h
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adc_types.h
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/*
* SPDX-FileCopyrightText: 2020-2022 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#pragma once
#include <stdbool.h>
#include <stdint.h>
#include "sdkconfig.h"
#include "soc/soc_caps.h"
#include "soc/clk_tree_defs.h"
#include "esp_attr.h"
/**
* @brief ADC unit
*/
typedef enum {
ADC_UNIT_1, ///< SAR ADC 1
ADC_UNIT_2, ///< SAR ADC 2
} adc_unit_t;
/**
* @brief ADC channels
*/
typedef enum {
ADC_CHANNEL_0, ///< ADC channel
ADC_CHANNEL_1, ///< ADC channel
ADC_CHANNEL_2, ///< ADC channel
ADC_CHANNEL_3, ///< ADC channel
ADC_CHANNEL_4, ///< ADC channel
ADC_CHANNEL_5, ///< ADC channel
ADC_CHANNEL_6, ///< ADC channel
ADC_CHANNEL_7, ///< ADC channel
ADC_CHANNEL_8, ///< ADC channel
ADC_CHANNEL_9, ///< ADC channel
} adc_channel_t;
/**
* @brief ADC attenuation parameter. Different parameters determine the range of the ADC.
*/
typedef enum {
ADC_ATTEN_DB_0 = 0, ///<No input attenuation, ADC can measure up to approx.
ADC_ATTEN_DB_2_5 = 1, ///<The input voltage of ADC will be attenuated extending the range of measurement by about 2.5 dB (1.33 x)
ADC_ATTEN_DB_6 = 2, ///<The input voltage of ADC will be attenuated extending the range of measurement by about 6 dB (2 x)
ADC_ATTEN_DB_11 = 3, ///<The input voltage of ADC will be attenuated extending the range of measurement by about 11 dB (3.55 x)
} adc_atten_t;
typedef enum {
ADC_BITWIDTH_DEFAULT = 0, ///< Default ADC output bits, max supported width will be selected
ADC_BITWIDTH_9 = 9, ///< ADC output width is 9Bit
ADC_BITWIDTH_10 = 10, ///< ADC output width is 10Bit
ADC_BITWIDTH_11 = 11, ///< ADC output width is 11Bit
ADC_BITWIDTH_12 = 12, ///< ADC output width is 12Bit
ADC_BITWIDTH_13 = 13, ///< ADC output width is 13Bit
} adc_bitwidth_t;
typedef enum {
ADC_ULP_MODE_DISABLE = 0, ///< ADC ULP mode is disabled
ADC_ULP_MODE_FSM = 1, ///< ADC is controlled by ULP FSM
ADC_ULP_MODE_RISCV = 2, ///< ADC is controlled by ULP RISCV
} adc_ulp_mode_t;
/**
* @brief ADC digital controller (DMA mode) work mode.
*/
typedef enum {
ADC_CONV_SINGLE_UNIT_1 = 1, ///< Only use ADC1 for conversion
ADC_CONV_SINGLE_UNIT_2 = 2, ///< Only use ADC2 for conversion
ADC_CONV_BOTH_UNIT = 3, ///< Use Both ADC1 and ADC2 for conversion simultaneously
ADC_CONV_ALTER_UNIT = 7, ///< Use both ADC1 and ADC2 for conversion by turn. e.g. ADC1 -> ADC2 -> ADC1 -> ADC2 .....
} adc_digi_convert_mode_t;
/**
* @brief ADC digital controller (DMA mode) output data format option.
*/
typedef enum {
ADC_DIGI_OUTPUT_FORMAT_TYPE1, ///< See `adc_digi_output_data_t.type1`
ADC_DIGI_OUTPUT_FORMAT_TYPE2, ///< See `adc_digi_output_data_t.type2`
} adc_digi_output_format_t;
#if SOC_ADC_DIG_CTRL_SUPPORTED && !SOC_ADC_RTC_CTRL_SUPPORTED
typedef soc_periph_adc_digi_clk_src_t adc_oneshot_clk_src_t; ///< Clock source type of oneshot mode which uses digital controller
typedef soc_periph_adc_digi_clk_src_t adc_continuous_clk_src_t; ///< Clock source type of continuous mode which uses digital controller
#elif SOC_ADC_RTC_CTRL_SUPPORTED
typedef soc_periph_adc_rtc_clk_src_t adc_oneshot_clk_src_t; ///< Clock source type of oneshot mode which uses RTC controller
typedef soc_periph_adc_digi_clk_src_t adc_continuous_clk_src_t; ///< Clock source type of continuous mode which uses digital controller
#endif
/**
* @brief ADC digital controller pattern configuration
*/
typedef struct {
uint8_t atten; ///< Attenuation of this ADC channel
uint8_t channel; ///< ADC channel
uint8_t unit; ///< ADC unit
uint8_t bit_width; ///< ADC output bit width
} adc_digi_pattern_config_t;
/**
* @brief ADC IIR Filter ID
*/
typedef enum {
ADC_DIGI_IIR_FILTER_0, ///< Filter 0
ADC_DIGI_IIR_FILTER_1, ///< Filter 1
} adc_digi_iir_filter_t;
/**
* @brief IIR Filter Coefficient
*/
typedef enum {
ADC_DIGI_IIR_FILTER_COEFF_2, ///< The filter coefficient is 2
ADC_DIGI_IIR_FILTER_COEFF_4, ///< The filter coefficient is 4
ADC_DIGI_IIR_FILTER_COEFF_8, ///< The filter coefficient is 8
ADC_DIGI_IIR_FILTER_COEFF_16, ///< The filter coefficient is 16
ADC_DIGI_IIR_FILTER_COEFF_64, ///< The filter coefficient is 64
} adc_digi_iir_filter_coeff_t;
/*---------------------------------------------------------------
Output Format
---------------------------------------------------------------*/
#if CONFIG_IDF_TARGET_ESP32 || CONFIG_IDF_TARGET_ESP32S2
/**
* @brief ADC digital controller (DMA mode) output data format.
* Used to analyze the acquired ADC (DMA) data.
* @note ESP32: Only `type1` is valid. ADC2 does not support DMA mode.
* @note ESP32-S2: Member `channel` can be used to judge the validity of the ADC data,
* because the role of the arbiter may get invalid ADC data.
*/
typedef struct {
union {
struct {
uint16_t data: 12; /*!<ADC real output data info. Resolution: 12 bit. */
uint16_t channel: 4; /*!<ADC channel index info. */
} type1; /*!<ADC type1 */
struct {
uint16_t data: 11; /*!<ADC real output data info. Resolution: 11 bit. */
uint16_t channel: 4; /*!<ADC channel index info. For ESP32-S2:
If (channel < ADC_CHANNEL_MAX), The data is valid.
If (channel > ADC_CHANNEL_MAX), The data is invalid. */
uint16_t unit: 1; /*!<ADC unit index info. 0: ADC1; 1: ADC2. */
} type2; /*!<When the configured output format is 11bit.*/
uint16_t val; /*!<Raw data value */
};
} adc_digi_output_data_t;
#elif CONFIG_IDF_TARGET_ESP32C3 || CONFIG_IDF_TARGET_ESP32C2
/**
* @brief ADC digital controller (DMA mode) output data format.
* Used to analyze the acquired ADC (DMA) data.
*/
typedef struct {
union {
struct {
uint32_t data: 12; /*!<ADC real output data info. Resolution: 12 bit. */
uint32_t reserved12: 1; /*!<Reserved12. */
uint32_t channel: 3; /*!<ADC channel index info.
If (channel < ADC_CHANNEL_MAX), The data is valid.
If (channel > ADC_CHANNEL_MAX), The data is invalid. */
uint32_t unit: 1; /*!<ADC unit index info. 0: ADC1; 1: ADC2. */
uint32_t reserved17_31: 15; /*!<Reserved17. */
} type2; /*!<When the configured output format is 12bit. */
uint32_t val; /*!<Raw data value */
};
} adc_digi_output_data_t;
#elif CONFIG_IDF_TARGET_ESP32S3
/**
* @brief ADC digital controller (DMA mode) output data format.
* Used to analyze the acquired ADC (DMA) data.
*/
typedef struct {
union {
struct {
uint32_t data: 12; /*!<ADC real output data info. Resolution: 12 bit. */
uint32_t reserved12: 1; /*!<Reserved12. */
uint32_t channel: 4; /*!<ADC channel index info.
If (channel < ADC_CHANNEL_MAX), The data is valid.
If (channel > ADC_CHANNEL_MAX), The data is invalid. */
uint32_t unit: 1; /*!<ADC unit index info. 0: ADC1; 1: ADC2. */
uint32_t reserved17_31: 14; /*!<Reserved17. */
} type2; /*!<When the configured output format is 12bit. */
uint32_t val; /*!<Raw data value */
};
} adc_digi_output_data_t;
#elif CONFIG_IDF_TARGET_ESP32C6 || CONFIG_IDF_TARGET_ESP32H2
/**
* @brief ADC digital controller (DMA mode) output data format.
* Used to analyze the acquired ADC (DMA) data.
*/
typedef struct {
union {
struct {
uint32_t data: 12; /*!<ADC real output data info. Resolution: 12 bit. */
uint32_t reserved12: 1; /*!<Reserved12. */
uint32_t channel: 4; /*!<ADC channel index info.
If (channel < ADC_CHANNEL_MAX), The data is valid.
If (channel > ADC_CHANNEL_MAX), The data is invalid. */
uint32_t reserved17_31: 15; /*!<Reserved 17-31. */
} type2; /*!<When the configured output format is 12bit. */
uint32_t val; /*!<Raw data value */
};
} adc_digi_output_data_t;
#endif
#if CONFIG_IDF_TARGET_ESP32S2
/**
* @brief ADC digital controller (DMA mode) clock system setting.
* Calculation formula: controller_clk = (`APLL` or `APB`) / (div_num + div_a / div_b + 1).
*
* @note: The clocks of the DAC digital controller use the ADC digital controller clock divider.
*/
typedef struct {
bool use_apll; /*!<true: use APLL clock; false: use APB clock. */
uint32_t div_num; /*!<Division factor. Range: 0 ~ 255.
Note: When a higher frequency clock is used (the division factor is less than 9),
the ADC reading value will be slightly offset. */
uint32_t div_b; /*!<Division factor. Range: 1 ~ 63. */
uint32_t div_a; /*!<Division factor. Range: 0 ~ 63. */
} adc_digi_clk_t;
#endif