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501af6dfa2
secure_boot: Checks secure boot efuses Closes IDF-2609 See merge request espressif/esp-idf!12148
63 lines
1.9 KiB
C
63 lines
1.9 KiB
C
// Copyright 2020 Espressif Systems (Shanghai) PTE LTD
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at",
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License
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#include <esp_types.h>
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#include <esp_err.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* @brief Get the RTC calibration efuse version
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*
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* @return Version of the stored efuse
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*/
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int esp_efuse_rtc_calib_get_ver(void);
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/**
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* @brief Get the init code in the efuse, for the corresponding attenuation.
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*
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* @param version Version of the stored efuse
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* @param atten Attenuation of the init code
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* @return The init code stored in efuse
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*/
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uint16_t esp_efuse_rtc_calib_get_init_code(int version, int atten);
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/**
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* @brief Get the calibration digits stored in the efuse, and the corresponding voltage.
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*
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* @param version Version of the stored efuse
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* @param atten Attenuation to use
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* @param out_digi Output buffer of the digits
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* @param out_vol_mv Output of the voltage, in mV
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* @return
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* - ESP_ERR_INVALID_ARG: If efuse version or attenuation is invalid
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* - ESP_OK: if success
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*/
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esp_err_t esp_efuse_rtc_calib_get_cal_voltage(int version, int atten, uint32_t* out_digi, uint32_t* out_vol_mv);
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/**
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* @brief Get the temperature sensor calibration number delta_T stored in the efuse.
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*
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* @param version Version of the stored efuse
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*
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* @return The specification of temperature sensor calibration number in efuse.
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*/
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float esp_efuse_rtc_calib_get_cal_temp(int version);
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#ifdef __cplusplus
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}
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#endif
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