1 /* 2 * SPDX-FileCopyrightText: 2020-2022 Espressif Systems (Shanghai) CO LTD 3 * 4 * SPDX-License-Identifier: Apache-2.0 5 */ 6 7 #include <esp_types.h> 8 #include <esp_err.h> 9 10 #ifdef __cplusplus 11 extern "C" { 12 #endif 13 14 //This is the ADC calibration value version burnt in efuse 15 #define ESP_EFUSE_ADC_CALIB_VER 1 16 #define ESP_EFUSE_ADC_CALIB_VER_MIN ESP_EFUSE_ADC_CALIB_VER 17 #define ESP_EFUSE_ADC_CALIB_VER_MAX ESP_EFUSE_ADC_CALIB_VER 18 19 /** 20 * @brief Get the RTC calibration efuse version 21 * 22 * @return Version of the stored efuse 23 */ 24 int esp_efuse_rtc_calib_get_ver(void); 25 26 /** 27 * @brief Get the init code in the efuse, for the corresponding attenuation. 28 * 29 * @param version Version of the stored efuse 30 * @param adc_unit ADC unit 31 * @param atten Attenuation of the init code 32 * @return The init code stored in efuse 33 */ 34 uint32_t esp_efuse_rtc_calib_get_init_code(int version, uint32_t adc_unit, int atten); 35 36 /** 37 * @brief Get the calibration digits stored in the efuse, and the corresponding voltage. 38 * 39 * @param version Version of the stored efuse 40 * @param adc_unit ADC unit 41 * @param atten Attenuation to use 42 * @param out_digi Output buffer of the digits 43 * @param out_vol_mv Output of the voltage, in mV 44 * @return 45 * - ESP_ERR_INVALID_ARG: If `ADC_ATTEN_DB_2_5` or `ADC_ATTEN_DB_6` is used 46 * - ESP_OK: if success 47 */ 48 esp_err_t esp_efuse_rtc_calib_get_cal_voltage(int version, uint32_t adc_unit, int atten, uint32_t *out_digi, uint32_t *out_vol_mv); 49 50 /** 51 * @brief Get the temperature sensor calibration number delta_T stored in the efuse. 52 * 53 * @param tsens_cal Pointer of the specification of temperature sensor calibration number in efuse. 54 * 55 * @return ESP_OK if get the calibration value successfully. 56 * ESP_ERR_INVALID_ARG if can't get the calibration value. 57 */ 58 esp_err_t esp_efuse_rtc_calib_get_tsens_val(float* tsens_cal); 59 60 #ifdef __cplusplus 61 } 62 #endif 63
