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esp_adc: added adc digital filter feature

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This commit is contained in:
Armando
2023-02-07 16:01:26 +08:00
committed by Armando (Dou Yiwen)
parent 648b1a41c6
commit 3afa671069
38 changed files with 1032 additions and 402 deletions
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components/hal/include/hal/adc_types.h
+19
View File
@@ -97,6 +97,25 @@ typedef struct {
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
---------------------------------------------------------------*/
components/hal/include/hal/adc_types_private.h
-49
View File
@@ -47,55 +47,6 @@ typedef struct {
}
#endif //#if SOC_ADC_ARBITER_SUPPORTED
#if SOC_ADC_FILTER_SUPPORTED
/*---------------------------------------------------------------
Filter
---------------------------------------------------------------*/
/**
* @brief ADC digital controller (DMA mode) filter index options.
*
* @note For ESP32-S2, The filter object of the ADC is fixed.
*/
typedef enum {
ADC_DIGI_FILTER_IDX0 = 0, /*!<The filter index 0.
For ESP32-S2, It can only be used to filter all enabled channels of ADC1 unit at the same time. */
ADC_DIGI_FILTER_IDX1, /*!<The filter index 1.
For ESP32-S2, It can only be used to filter all enabled channels of ADC2 unit at the same time. */
ADC_DIGI_FILTER_IDX_MAX
} adc_digi_filter_idx_t;
/**
* @brief ADC digital controller (DMA mode) filter type options.
* Expression: filter_data = (k-1)/k * last_data + new_data / k.
*/
typedef enum {
#if CONFIG_IDF_TARGET_ESP32C3 || CONFIG_IDF_TARGET_ESP32H4 || CONFIG_IDF_TARGET_ESP32C2
ADC_DIGI_FILTER_DIS = -1, /*!< Disable filter */
#endif
ADC_DIGI_FILTER_IIR_2 = 0, /*!<The filter mode is first-order IIR filter. The coefficient is 2. */
ADC_DIGI_FILTER_IIR_4, /*!<The filter mode is first-order IIR filter. The coefficient is 4. */
ADC_DIGI_FILTER_IIR_8, /*!<The filter mode is first-order IIR filter. The coefficient is 8. */
ADC_DIGI_FILTER_IIR_16, /*!<The filter mode is first-order IIR filter. The coefficient is 16. */
ADC_DIGI_FILTER_IIR_64, /*!<The filter mode is first-order IIR filter. The coefficient is 64. */
ADC_DIGI_FILTER_IIR_MAX
} adc_digi_filter_mode_t;
/**
* @brief ADC digital controller (DMA mode) filter configuration.
*
* @note For ESP32-S2, The filter object of the ADC is fixed.
* @note For ESP32-S2, The filter object is always all enabled channels.
*/
typedef struct {
adc_unit_t adc_unit; /*!<Set adc unit number for filter.
For ESP32-S2, Filter IDX0/IDX1 can only be used to filter all enabled channels of ADC1/ADC2 unit at the same time. */
adc_channel_t channel; /*!<Set adc channel number for filter.
For ESP32-S2, it's always `ADC_CHANNEL_MAX` */
adc_digi_filter_mode_t mode;/*!<Set adc filter mode for filter. See ``adc_digi_filter_mode_t``. */
} adc_digi_filter_t;
#endif // #if SOC_ADC_FILTER_SUPPORTED
#if SOC_ADC_MONITOR_SUPPORTED
/*---------------------------------------------------------------
Monitor