arduino-esp32/tools/sdk/include/esp32/esp_phy_init.h

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// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#pragma once
#include <stdint.h>
#include <stdbool.h>
#include "esp_err.h"
#ifdef __cplusplus
extern "C" {
#endif
/**
* @file PHY init parameters and API
*/
/**
* @brief Structure holding PHY init parameters
*/
typedef struct {
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uint8_t params[128]; /*!< opaque PHY initialization parameters */
} esp_phy_init_data_t;
/**
* @brief Opaque PHY calibration data
*/
typedef struct {
uint8_t opaque[1904]; /*!< calibration data */
} esp_phy_calibration_data_t;
typedef enum {
PHY_RF_CAL_PARTIAL = 0x00000000, /*!< Do part of RF calibration. This should be used after power-on reset. */
PHY_RF_CAL_NONE = 0x00000001, /*!< Don't do any RF calibration. This mode is only suggested to be used after deep sleep reset. */
PHY_RF_CAL_FULL = 0x00000002 /*!< Do full RF calibration. Produces best results, but also consumes a lot of time and current. Suggested to be used once. */
} esp_phy_calibration_mode_t;
/**
* @brief Get PHY init data
*
* If "Use a partition to store PHY init data" option is set in menuconfig,
* This function will load PHY init data from a partition. Otherwise,
* PHY init data will be compiled into the application itself, and this function
* will return a pointer to PHY init data located in read-only memory (DROM).
*
* If "Use a partition to store PHY init data" option is enabled, this function
* may return NULL if the data loaded from flash is not valid.
*
* @note Call esp_phy_release_init_data to release the pointer obtained using
* this function after the call to esp_wifi_init.
*
* @return pointer to PHY init data structure
*/
const esp_phy_init_data_t* esp_phy_get_init_data();
/**
* @brief Release PHY init data
* @param data pointer to PHY init data structure obtained from
* esp_phy_get_init_data function
*/
void esp_phy_release_init_data(const esp_phy_init_data_t* data);
/**
* @brief Function called by esp_phy_init to load PHY calibration data
*
* This is a convenience function which can be used to load PHY calibration
* data from NVS. Data can be stored to NVS using esp_phy_store_cal_data_to_nvs
* function.
*
* If calibration data is not present in the NVS, or
* data is not valid (was obtained for a chip with a different MAC address,
* or obtained for a different version of software), this function will
* return an error.
*
* If "Initialize PHY in startup code" option is set in menuconfig, this
* function will be used to load calibration data. To provide a different
* mechanism for loading calibration data, disable
* "Initialize PHY in startup code" option in menuconfig and call esp_phy_init
* function from the application. For an example usage of esp_phy_init and
* this function, see esp_phy_store_cal_data_to_nvs function in cpu_start.c
*
* @param out_cal_data pointer to calibration data structure to be filled with
* loaded data.
* @return ESP_OK on success
*/
esp_err_t esp_phy_load_cal_data_from_nvs(esp_phy_calibration_data_t* out_cal_data);
/**
* @brief Function called by esp_phy_init to store PHY calibration data
*
* This is a convenience function which can be used to store PHY calibration
* data to the NVS. Calibration data is returned by esp_phy_init function.
* Data saved using this function to the NVS can later be loaded using
* esp_phy_store_cal_data_to_nvs function.
*
* If "Initialize PHY in startup code" option is set in menuconfig, this
* function will be used to store calibration data. To provide a different
* mechanism for storing calibration data, disable
* "Initialize PHY in startup code" option in menuconfig and call esp_phy_init
* function from the application.
*
* @param cal_data pointer to calibration data which has to be saved.
* @return ESP_OK on success
*/
esp_err_t esp_phy_store_cal_data_to_nvs(const esp_phy_calibration_data_t* cal_data);
/**
* @brief Initialize PHY and RF module
*
* PHY and RF module should be initialized in order to use WiFi or BT.
* Now PHY and RF initializing job is done automatically when start WiFi or BT. Users should not
* call this API in their application.
*
* @param init_data PHY parameters. Default set of parameters can
* be obtained by calling esp_phy_get_default_init_data
* function.
* @param mode Calibration mode (Full, partial, or no calibration)
* @param[inout] calibration_data
* @return ESP_OK on success.
* @return ESP_FAIL on fail.
*/
esp_err_t esp_phy_rf_init(const esp_phy_init_data_t* init_data,
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esp_phy_calibration_mode_t mode, esp_phy_calibration_data_t* calibration_data);
/**
* @brief De-initialize PHY and RF module
*
* PHY module should be de-initialized in order to shutdown WiFi or BT.
* Now PHY and RF de-initializing job is done automatically when stop WiFi or BT. Users should not
* call this API in their application.
*
* @return ESP_OK on success.
*/
esp_err_t esp_phy_rf_deinit(void);
/**
* @brief Load calibration data from NVS and initialize PHY and RF module
*/
void esp_phy_load_cal_and_init(void);
#ifdef __cplusplus
}
#endif