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esp_wifi.h
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esp_wifi.h
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/*
* SPDX-FileCopyrightText: 2015-2024 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
/* Notes about WiFi Programming
*
* The esp32 WiFi programming model can be depicted as following picture:
*
*
* default handler user handler
* ------------- --------------- ---------------
* | | event | | callback or | |
* | tcpip | ---------> | event | ----------> | application |
* | stack | | task | event | task |
* |-----------| |-------------| |-------------|
* /|\ |
* | |
* event | |
* | |
* | |
* --------------- |
* | | |
* | WiFi Driver |/__________________|
* | |\ API call
* | |
* |-------------|
*
* The WiFi driver can be consider as black box, it knows nothing about the high layer code, such as
* TCPIP stack, application task, event task etc, all it can do is to receive API call from high layer
* or post event queue to a specified Queue, which is initialized by API esp_wifi_init().
*
* The event task is a daemon task, which receives events from WiFi driver or from other subsystem, such
* as TCPIP stack, event task will call the default callback function on receiving the event. For example,
* on receiving event WIFI_EVENT_STA_CONNECTED, it will call esp_netif API to start the DHCP
* client in it's default handler.
*
* Application can register it's own event callback function by API esp_event_init, then the application callback
* function will be called after the default callback. Also, if application doesn't want to execute the callback
* in the event task, what it needs to do is to post the related event to application task in the application callback function.
*
* The application task (code) generally mixes all these thing together, it calls APIs to init the system/WiFi and
* handle the events when necessary.
*
*/
#ifndef __ESP_WIFI_H__
#define __ESP_WIFI_H__
#include <stdint.h>
#include <stdbool.h>
#include "esp_err.h"
#include "esp_wifi_types.h"
#include "esp_event.h"
#include "esp_private/esp_wifi_private.h"
#include "esp_wifi_default.h"
#ifdef __cplusplus
extern "C" {
#endif
#define ESP_ERR_WIFI_NOT_INIT (ESP_ERR_WIFI_BASE + 1) /*!< WiFi driver was not installed by esp_wifi_init */
#define ESP_ERR_WIFI_NOT_STARTED (ESP_ERR_WIFI_BASE + 2) /*!< WiFi driver was not started by esp_wifi_start */
#define ESP_ERR_WIFI_NOT_STOPPED (ESP_ERR_WIFI_BASE + 3) /*!< WiFi driver was not stopped by esp_wifi_stop */
#define ESP_ERR_WIFI_IF (ESP_ERR_WIFI_BASE + 4) /*!< WiFi interface error */
#define ESP_ERR_WIFI_MODE (ESP_ERR_WIFI_BASE + 5) /*!< WiFi mode error */
#define ESP_ERR_WIFI_STATE (ESP_ERR_WIFI_BASE + 6) /*!< WiFi internal state error */
#define ESP_ERR_WIFI_CONN (ESP_ERR_WIFI_BASE + 7) /*!< WiFi internal control block of station or soft-AP error */
#define ESP_ERR_WIFI_NVS (ESP_ERR_WIFI_BASE + 8) /*!< WiFi internal NVS module error */
#define ESP_ERR_WIFI_MAC (ESP_ERR_WIFI_BASE + 9) /*!< MAC address is invalid */
#define ESP_ERR_WIFI_SSID (ESP_ERR_WIFI_BASE + 10) /*!< SSID is invalid */
#define ESP_ERR_WIFI_PASSWORD (ESP_ERR_WIFI_BASE + 11) /*!< Password is invalid */
#define ESP_ERR_WIFI_TIMEOUT (ESP_ERR_WIFI_BASE + 12) /*!< Timeout error */
#define ESP_ERR_WIFI_WAKE_FAIL (ESP_ERR_WIFI_BASE + 13) /*!< WiFi is in sleep state(RF closed) and wakeup fail */
#define ESP_ERR_WIFI_WOULD_BLOCK (ESP_ERR_WIFI_BASE + 14) /*!< The caller would block */
#define ESP_ERR_WIFI_NOT_CONNECT (ESP_ERR_WIFI_BASE + 15) /*!< Station still in disconnect status */
#define ESP_ERR_WIFI_POST (ESP_ERR_WIFI_BASE + 18) /*!< Failed to post the event to WiFi task */
#define ESP_ERR_WIFI_INIT_STATE (ESP_ERR_WIFI_BASE + 19) /*!< Invalid WiFi state when init/deinit is called */
#define ESP_ERR_WIFI_STOP_STATE (ESP_ERR_WIFI_BASE + 20) /*!< Returned when WiFi is stopping */
#define ESP_ERR_WIFI_NOT_ASSOC (ESP_ERR_WIFI_BASE + 21) /*!< The WiFi connection is not associated */
#define ESP_ERR_WIFI_TX_DISALLOW (ESP_ERR_WIFI_BASE + 22) /*!< The WiFi TX is disallowed */
#define ESP_ERR_WIFI_DISCARD (ESP_ERR_WIFI_BASE + 23) /*!< Discard frame */
#define ESP_ERR_WIFI_ROC_IN_PROGRESS (ESP_ERR_WIFI_BASE + 24) /*!< ROC op is in progress */
/**
* @brief WiFi stack configuration parameters passed to esp_wifi_init call.
*/
typedef struct {
wifi_osi_funcs_t* osi_funcs; /**< WiFi OS functions */
wpa_crypto_funcs_t wpa_crypto_funcs; /**< WiFi station crypto functions when connect */
int static_rx_buf_num; /**< WiFi static RX buffer number */
int dynamic_rx_buf_num; /**< WiFi dynamic RX buffer number */
int tx_buf_type; /**< WiFi TX buffer type */
int static_tx_buf_num; /**< WiFi static TX buffer number */
int dynamic_tx_buf_num; /**< WiFi dynamic TX buffer number */
int rx_mgmt_buf_type; /**< WiFi RX MGMT buffer type */
int rx_mgmt_buf_num; /**< WiFi RX MGMT buffer number */
int cache_tx_buf_num; /**< WiFi TX cache buffer number */
int csi_enable; /**< WiFi channel state information enable flag */
int ampdu_rx_enable; /**< WiFi AMPDU RX feature enable flag */
int ampdu_tx_enable; /**< WiFi AMPDU TX feature enable flag */
int amsdu_tx_enable; /**< WiFi AMSDU TX feature enable flag */
int nvs_enable; /**< WiFi NVS flash enable flag */
int nano_enable; /**< Nano option for printf/scan family enable flag */
int rx_ba_win; /**< WiFi Block Ack RX window size */
int wifi_task_core_id; /**< WiFi Task Core ID */
int beacon_max_len; /**< WiFi softAP maximum length of the beacon */
int mgmt_sbuf_num; /**< WiFi management short buffer number, the minimum value is 6, the maximum value is 32 */
uint64_t feature_caps; /**< Enables additional WiFi features and capabilities */
bool sta_disconnected_pm; /**< WiFi Power Management for station at disconnected status */
int espnow_max_encrypt_num; /**< Maximum encrypt number of peers supported by espnow */
int magic; /**< WiFi init magic number, it should be the last field */
} wifi_init_config_t;
#ifdef CONFIG_ESP32_WIFI_STATIC_TX_BUFFER_NUM
#define WIFI_STATIC_TX_BUFFER_NUM CONFIG_ESP32_WIFI_STATIC_TX_BUFFER_NUM
#else
#define WIFI_STATIC_TX_BUFFER_NUM 0
#endif
#if CONFIG_SPIRAM
#define WIFI_CACHE_TX_BUFFER_NUM CONFIG_ESP32_WIFI_CACHE_TX_BUFFER_NUM
#else
#define WIFI_CACHE_TX_BUFFER_NUM 0
#endif
#ifdef CONFIG_ESP32_WIFI_DYNAMIC_TX_BUFFER_NUM
#define WIFI_DYNAMIC_TX_BUFFER_NUM CONFIG_ESP32_WIFI_DYNAMIC_TX_BUFFER_NUM
#else
#define WIFI_DYNAMIC_TX_BUFFER_NUM 0
#endif
#ifdef CONFIG_ESP_WIFI_RX_MGMT_BUF_NUM_DEF
#define WIFI_RX_MGMT_BUF_NUM_DEF CONFIG_ESP_WIFI_RX_MGMT_BUF_NUM_DEF
#else
#define WIFI_RX_MGMT_BUF_NUM_DEF 0
#endif
#if CONFIG_ESP32_WIFI_CSI_ENABLED
#define WIFI_CSI_ENABLED 1
#else
#define WIFI_CSI_ENABLED 0
#endif
#if CONFIG_ESP32_WIFI_AMPDU_RX_ENABLED
#define WIFI_AMPDU_RX_ENABLED 1
#else
#define WIFI_AMPDU_RX_ENABLED 0
#endif
#if CONFIG_ESP32_WIFI_AMPDU_TX_ENABLED
#define WIFI_AMPDU_TX_ENABLED 1
#else
#define WIFI_AMPDU_TX_ENABLED 0
#endif
#if CONFIG_ESP32_WIFI_AMSDU_TX_ENABLED
#define WIFI_AMSDU_TX_ENABLED 1
#else
#define WIFI_AMSDU_TX_ENABLED 0
#endif
#if CONFIG_ESP32_WIFI_NVS_ENABLED
#define WIFI_NVS_ENABLED 1
#else
#define WIFI_NVS_ENABLED 0
#endif
#if CONFIG_NEWLIB_NANO_FORMAT
#define WIFI_NANO_FORMAT_ENABLED 1
#else
#define WIFI_NANO_FORMAT_ENABLED 0
#endif
extern const wpa_crypto_funcs_t g_wifi_default_wpa_crypto_funcs;
#define WIFI_INIT_CONFIG_MAGIC 0x1F2F3F4F
#ifdef CONFIG_ESP32_WIFI_AMPDU_RX_ENABLED
#define WIFI_DEFAULT_RX_BA_WIN CONFIG_ESP32_WIFI_RX_BA_WIN
#else
#define WIFI_DEFAULT_RX_BA_WIN 0 /* unused if ampdu_rx_enable == false */
#endif
#if CONFIG_ESP32_WIFI_TASK_PINNED_TO_CORE_1
#define WIFI_TASK_CORE_ID 1
#else
#define WIFI_TASK_CORE_ID 0
#endif
#ifdef CONFIG_ESP32_WIFI_SOFTAP_BEACON_MAX_LEN
#define WIFI_SOFTAP_BEACON_MAX_LEN CONFIG_ESP32_WIFI_SOFTAP_BEACON_MAX_LEN
#else
#define WIFI_SOFTAP_BEACON_MAX_LEN 752
#endif
#ifdef CONFIG_ESP32_WIFI_MGMT_SBUF_NUM
#define WIFI_MGMT_SBUF_NUM CONFIG_ESP32_WIFI_MGMT_SBUF_NUM
#else
#define WIFI_MGMT_SBUF_NUM 32
#endif
#if CONFIG_ESP_WIFI_STA_DISCONNECTED_PM_ENABLE
#define WIFI_STA_DISCONNECTED_PM_ENABLED true
#else
#define WIFI_STA_DISCONNECTED_PM_ENABLED false
#endif
#if CONFIG_ESP32_WIFI_ENABLE_WPA3_SAE
#define WIFI_ENABLE_WPA3_SAE (1<<0)
#else
#define WIFI_ENABLE_WPA3_SAE 0
#endif
#if CONFIG_SPIRAM
#define WIFI_ENABLE_SPIRAM (1<<1)
#else
#define WIFI_ENABLE_SPIRAM 0
#endif
#if CONFIG_ESP_WIFI_FTM_INITIATOR_SUPPORT
#define WIFI_FTM_INITIATOR (1<<2)
#else
#define WIFI_FTM_INITIATOR 0
#endif
#if CONFIG_ESP_WIFI_FTM_RESPONDER_SUPPORT
#define WIFI_FTM_RESPONDER (1<<3)
#else
#define WIFI_FTM_RESPONDER 0
#endif
#define CONFIG_FEATURE_WPA3_SAE_BIT (1<<0)
#define CONFIG_FEATURE_CACHE_TX_BUF_BIT (1<<1)
#define CONFIG_FEATURE_FTM_INITIATOR_BIT (1<<2)
#define CONFIG_FEATURE_FTM_RESPONDER_BIT (1<<3)
/* Set additional WiFi features and capabilities */
#define WIFI_FEATURE_CAPS (WIFI_ENABLE_WPA3_SAE | \
WIFI_ENABLE_SPIRAM | \
WIFI_FTM_INITIATOR | \
WIFI_FTM_RESPONDER)
#define WIFI_INIT_CONFIG_DEFAULT() { \
.osi_funcs = &g_wifi_osi_funcs, \
.wpa_crypto_funcs = g_wifi_default_wpa_crypto_funcs, \
.static_rx_buf_num = CONFIG_ESP32_WIFI_STATIC_RX_BUFFER_NUM,\
.dynamic_rx_buf_num = CONFIG_ESP32_WIFI_DYNAMIC_RX_BUFFER_NUM,\
.tx_buf_type = CONFIG_ESP32_WIFI_TX_BUFFER_TYPE,\
.static_tx_buf_num = WIFI_STATIC_TX_BUFFER_NUM,\
.dynamic_tx_buf_num = WIFI_DYNAMIC_TX_BUFFER_NUM,\
.rx_mgmt_buf_type = CONFIG_ESP_WIFI_DYNAMIC_RX_MGMT_BUF,\
.rx_mgmt_buf_num = WIFI_RX_MGMT_BUF_NUM_DEF,\
.cache_tx_buf_num = WIFI_CACHE_TX_BUFFER_NUM,\
.csi_enable = WIFI_CSI_ENABLED,\
.ampdu_rx_enable = WIFI_AMPDU_RX_ENABLED,\
.ampdu_tx_enable = WIFI_AMPDU_TX_ENABLED,\
.amsdu_tx_enable = WIFI_AMSDU_TX_ENABLED,\
.nvs_enable = WIFI_NVS_ENABLED,\
.nano_enable = WIFI_NANO_FORMAT_ENABLED,\
.rx_ba_win = WIFI_DEFAULT_RX_BA_WIN,\
.wifi_task_core_id = WIFI_TASK_CORE_ID,\
.beacon_max_len = WIFI_SOFTAP_BEACON_MAX_LEN, \
.mgmt_sbuf_num = WIFI_MGMT_SBUF_NUM, \
.feature_caps = WIFI_FEATURE_CAPS, \
.sta_disconnected_pm = WIFI_STA_DISCONNECTED_PM_ENABLED, \
.espnow_max_encrypt_num = CONFIG_ESP_WIFI_ESPNOW_MAX_ENCRYPT_NUM, \
.magic = WIFI_INIT_CONFIG_MAGIC\
}
/**
* @brief Initialize WiFi
* Allocate resource for WiFi driver, such as WiFi control structure, RX/TX buffer,
* WiFi NVS structure etc. This WiFi also starts WiFi task
*
* @attention 1. This API must be called before all other WiFi API can be called
* @attention 2. Always use WIFI_INIT_CONFIG_DEFAULT macro to initialize the configuration to default values, this can
* guarantee all the fields get correct value when more fields are added into wifi_init_config_t
* in future release. If you want to set your own initial values, overwrite the default values
* which are set by WIFI_INIT_CONFIG_DEFAULT. Please be notified that the field 'magic' of
* wifi_init_config_t should always be WIFI_INIT_CONFIG_MAGIC!
*
* @param config pointer to WiFi initialized configuration structure; can point to a temporary variable.
*
* @return
* - ESP_OK: succeed
* - ESP_ERR_NO_MEM: out of memory
* - others: refer to error code esp_err.h
*/
esp_err_t esp_wifi_init(const wifi_init_config_t *config);
/**
* @brief Deinit WiFi
* Free all resource allocated in esp_wifi_init and stop WiFi task
*
* @attention 1. This API should be called if you want to remove WiFi driver from the system
*
* @return
* - ESP_OK: succeed
* - ESP_ERR_WIFI_NOT_INIT: WiFi is not initialized by esp_wifi_init
*/
esp_err_t esp_wifi_deinit(void);
/**
* @brief Set the WiFi operating mode
*
* Set the WiFi operating mode as station, soft-AP or station+soft-AP,
* The default mode is station mode.
*
* @param mode WiFi operating mode
*
* @return
* - ESP_OK: succeed
* - ESP_ERR_WIFI_NOT_INIT: WiFi is not initialized by esp_wifi_init
* - ESP_ERR_INVALID_ARG: invalid argument
* - others: refer to error code in esp_err.h
*/
esp_err_t esp_wifi_set_mode(wifi_mode_t mode);
/**
* @brief Get current operating mode of WiFi
*
* @param[out] mode store current WiFi mode
*
* @return
* - ESP_OK: succeed
* - ESP_ERR_WIFI_NOT_INIT: WiFi is not initialized by esp_wifi_init
* - ESP_ERR_INVALID_ARG: invalid argument
*/
esp_err_t esp_wifi_get_mode(wifi_mode_t *mode);
/**
* @brief Start WiFi according to current configuration
* If mode is WIFI_MODE_STA, it create station control block and start station
* If mode is WIFI_MODE_AP, it create soft-AP control block and start soft-AP
* If mode is WIFI_MODE_APSTA, it create soft-AP and station control block and start soft-AP and station
*
* @return
* - ESP_OK: succeed
* - ESP_ERR_WIFI_NOT_INIT: WiFi is not initialized by esp_wifi_init
* - ESP_ERR_INVALID_ARG: invalid argument
* - ESP_ERR_NO_MEM: out of memory
* - ESP_ERR_WIFI_CONN: WiFi internal error, station or soft-AP control block wrong
* - ESP_FAIL: other WiFi internal errors
*/
esp_err_t esp_wifi_start(void);
/**
* @brief Stop WiFi
* If mode is WIFI_MODE_STA, it stop station and free station control block
* If mode is WIFI_MODE_AP, it stop soft-AP and free soft-AP control block
* If mode is WIFI_MODE_APSTA, it stop station/soft-AP and free station/soft-AP control block
*
* @return
* - ESP_OK: succeed
* - ESP_ERR_WIFI_NOT_INIT: WiFi is not initialized by esp_wifi_init
*/
esp_err_t esp_wifi_stop(void);
/**
* @brief Restore WiFi stack persistent settings to default values
*
* This function will reset settings made using the following APIs:
* - esp_wifi_set_bandwidth,
* - esp_wifi_set_protocol,
* - esp_wifi_set_config related
* - esp_wifi_set_mode
*
* @return
* - ESP_OK: succeed
* - ESP_ERR_WIFI_NOT_INIT: WiFi is not initialized by esp_wifi_init
*/
esp_err_t esp_wifi_restore(void);
/**
* @brief Connect the ESP32 WiFi station to the AP.
*
* @attention 1. This API only impact WIFI_MODE_STA or WIFI_MODE_APSTA mode
* @attention 2. If the ESP32 is connected to an AP, call esp_wifi_disconnect to disconnect.
* @attention 3. The scanning triggered by esp_wifi_scan_start() will not be effective until connection between ESP32 and the AP is established.
* If ESP32 is scanning and connecting at the same time, ESP32 will abort scanning and return a warning message and error
* number ESP_ERR_WIFI_STATE.
* @attention 4. This API attempts to connect to an Access Point (AP) only once. To enable reconnection in case of a connection failure, please use
* the 'failure_retry_cnt' feature in the 'wifi_sta_config_t'. Users are suggested to implement reconnection logic in their application
* for scenarios where the specified AP does not exist, or reconnection is desired after the device has received a disconnect event.
*
* @return
* - ESP_OK: succeed
* - ESP_ERR_WIFI_NOT_INIT: WiFi is not initialized by esp_wifi_init
* - ESP_ERR_WIFI_NOT_STARTED: WiFi is not started by esp_wifi_start
* - ESP_ERR_WIFI_CONN: WiFi internal error, station or soft-AP control block wrong
* - ESP_ERR_WIFI_SSID: SSID of AP which station connects is invalid
*/
esp_err_t esp_wifi_connect(void);
/**
* @brief Disconnect the ESP32 WiFi station from the AP.
*
* @return
* - ESP_OK: succeed
* - ESP_ERR_WIFI_NOT_INIT: WiFi was not initialized by esp_wifi_init
* - ESP_ERR_WIFI_NOT_STARTED: WiFi was not started by esp_wifi_start
* - ESP_FAIL: other WiFi internal errors
*/
esp_err_t esp_wifi_disconnect(void);
/**
* @brief Currently this API is just an stub API
*
* @return
* - ESP_OK: succeed
* - others: fail
*/
esp_err_t esp_wifi_clear_fast_connect(void);
/**
* @brief deauthenticate all stations or associated id equals to aid
*
* @param aid when aid is 0, deauthenticate all stations, otherwise deauthenticate station whose associated id is aid
*
* @return
* - ESP_OK: succeed
* - ESP_ERR_WIFI_NOT_INIT: WiFi is not initialized by esp_wifi_init
* - ESP_ERR_WIFI_NOT_STARTED: WiFi was not started by esp_wifi_start
* - ESP_ERR_INVALID_ARG: invalid argument
* - ESP_ERR_WIFI_MODE: WiFi mode is wrong
*/
esp_err_t esp_wifi_deauth_sta(uint16_t aid);
/**
* @brief Scan all available APs.
*
* @attention If this API is called, the found APs are stored in WiFi driver dynamic allocated memory. And then
* can be freed in esp_wifi_scan_get_ap_records(), esp_wifi_scan_get_ap_record() or esp_wifi_clear_ap_list(),
* so call any one to free the memory once the scan is done.
* @attention The values of maximum active scan time and passive scan time per channel are limited to 1500 milliseconds.
* Values above 1500ms may cause station to disconnect from AP and are not recommended.
*
* @param config configuration settings for scanning, if set to NULL default settings will be used
* of which default values are show_hidden:false, scan_type:active, scan_time.active.min:0,
* scan_time.active.max:120 miliseconds, scan_time.passive:360 miliseconds
*
* @param block if block is true, this API will block the caller until the scan is done, otherwise
* it will return immediately
*
* @return
* - ESP_OK: succeed
* - ESP_ERR_WIFI_NOT_INIT: WiFi is not initialized by esp_wifi_init
* - ESP_ERR_WIFI_NOT_STARTED: WiFi was not started by esp_wifi_start
* - ESP_ERR_WIFI_TIMEOUT: blocking scan is timeout
* - ESP_ERR_WIFI_STATE: wifi still connecting when invoke esp_wifi_scan_start
* - others: refer to error code in esp_err.h
*/
esp_err_t esp_wifi_scan_start(const wifi_scan_config_t *config, bool block);
/**
* @brief Stop the scan in process
*
* @return
* - ESP_OK: succeed
* - ESP_ERR_WIFI_NOT_INIT: WiFi is not initialized by esp_wifi_init
* - ESP_ERR_WIFI_NOT_STARTED: WiFi is not started by esp_wifi_start
*/
esp_err_t esp_wifi_scan_stop(void);
/**
* @brief Get number of APs found in last scan
*
* @param[out] number store number of APs found in last scan
*
* @attention This API can only be called when the scan is completed, otherwise it may get wrong value.
*
* @return
* - ESP_OK: succeed
* - ESP_ERR_WIFI_NOT_INIT: WiFi is not initialized by esp_wifi_init
* - ESP_ERR_WIFI_NOT_STARTED: WiFi is not started by esp_wifi_start
* - ESP_ERR_INVALID_ARG: invalid argument
*/
esp_err_t esp_wifi_scan_get_ap_num(uint16_t *number);
/**
* @brief Get AP list found in last scan.
*
* @attention This API will free all memory occupied by scanned AP list.
*
* @param[inout] number As input param, it stores max AP number ap_records can hold.
* As output param, it receives the actual AP number this API returns.
* @param ap_records wifi_ap_record_t array to hold the found APs
*
* @return
* - ESP_OK: succeed
* - ESP_ERR_WIFI_NOT_INIT: WiFi is not initialized by esp_wifi_init
* - ESP_ERR_WIFI_NOT_STARTED: WiFi is not started by esp_wifi_start
* - ESP_ERR_INVALID_ARG: invalid argument
* - ESP_ERR_NO_MEM: out of memory
*/
esp_err_t esp_wifi_scan_get_ap_records(uint16_t *number, wifi_ap_record_t *ap_records);
/**
* @brief Get one AP record from the scanned AP list.
*
* @attention Different from esp_wifi_scan_get_ap_records(), this API only gets one AP record
* from the scanned AP list each time. This API will free the memory of one AP record,
* if the user doesn't get all records in the scannned AP list, then needs to call esp_wifi_clear_ap_list()
* to free the remaining memory.
*
* @param[out] ap_record pointer to one AP record
*
* @return
* - ESP_OK: succeed
* - ESP_ERR_WIFI_NOT_INIT: WiFi is not initialized by esp_wifi_init
* - ESP_ERR_WIFI_NOT_STARTED: WiFi is not started by esp_wifi_start
* - ESP_ERR_INVALID_ARG: invalid argument
* - ESP_FAIL: scan APs is NULL, means all AP records fetched or no AP found
*/
esp_err_t esp_wifi_scan_get_ap_record(wifi_ap_record_t *ap_record);
/**
* @brief Clear AP list found in last scan
*
* @attention This API will free all memory occupied by scanned AP list.
* When the obtained AP list fails, AP records must be cleared,otherwise it may cause memory leakage.
*
* @return
* - ESP_OK: succeed
* - ESP_ERR_WIFI_NOT_INIT: WiFi is not initialized by esp_wifi_init
* - ESP_ERR_WIFI_NOT_STARTED: WiFi is not started by esp_wifi_start
* - ESP_ERR_WIFI_MODE: WiFi mode is wrong
* - ESP_ERR_INVALID_ARG: invalid argument
*/
esp_err_t esp_wifi_clear_ap_list(void);
/**
* @brief Get information of AP which the ESP32 station is associated with
*
* @attention When the obtained country information is empty, it means that the AP does not carry country information
*
* @param ap_info the wifi_ap_record_t to hold AP information
* sta can get the connected ap's phy mode info through the struct member
* phy_11b，phy_11g，phy_11n，phy_lr in the wifi_ap_record_t struct.
* For example, phy_11b = 1 imply that ap support 802.11b mode
*
* @return
* - ESP_OK: succeed
* - ESP_ERR_WIFI_CONN: The station interface don't initialized
* - ESP_ERR_WIFI_NOT_CONNECT: The station is in disconnect status
*/
esp_err_t esp_wifi_sta_get_ap_info(wifi_ap_record_t *ap_info);
/**
* @brief Set current WiFi power save type
*
* @attention Default power save type is WIFI_PS_MIN_MODEM.
*
* @param type power save type
*
* @return ESP_OK: succeed
*/
esp_err_t esp_wifi_set_ps(wifi_ps_type_t type);
/**
* @brief Get current WiFi power save type
*
* @attention Default power save type is WIFI_PS_MIN_MODEM.
*
* @param[out] type: store current power save type
*
* @return ESP_OK: succeed
*/
esp_err_t esp_wifi_get_ps(wifi_ps_type_t *type);
/**
* @brief Set protocol type of specified interface
* The default protocol is (WIFI_PROTOCOL_11B|WIFI_PROTOCOL_11G|WIFI_PROTOCOL_11N)
*
* @attention Support 802.11b or 802.11bg or 802.11bgn or LR mode
*
* @param ifx interfaces
* @param protocol_bitmap WiFi protocol bitmap
*
* @return
* - ESP_OK: succeed
* - ESP_ERR_WIFI_NOT_INIT: WiFi is not initialized by esp_wifi_init
* - ESP_ERR_WIFI_IF: invalid interface
* - others: refer to error codes in esp_err.h
*/
esp_err_t esp_wifi_set_protocol(wifi_interface_t ifx, uint8_t protocol_bitmap);
/**
* @brief Get the current protocol bitmap of the specified interface
*
* @param ifx interface
* @param[out] protocol_bitmap store current WiFi protocol bitmap of interface ifx
*
* @return
* - ESP_OK: succeed
* - ESP_ERR_WIFI_NOT_INIT: WiFi is not initialized by esp_wifi_init
* - ESP_ERR_WIFI_IF: invalid interface
* - ESP_ERR_INVALID_ARG: invalid argument
* - others: refer to error codes in esp_err.h
*/
esp_err_t esp_wifi_get_protocol(wifi_interface_t ifx, uint8_t *protocol_bitmap);
/**
* @brief Set the bandwidth of ESP32 specified interface
*
* @attention 1. API return false if try to configure an interface that is not enabled
* @attention 2. WIFI_BW_HT40 is supported only when the interface support 11N
*
* @param ifx interface to be configured
* @param bw bandwidth
*
* @return
* - ESP_OK: succeed
* - ESP_ERR_WIFI_NOT_INIT: WiFi is not initialized by esp_wifi_init
* - ESP_ERR_WIFI_IF: invalid interface
* - ESP_ERR_INVALID_ARG: invalid argument
* - others: refer to error codes in esp_err.h
*/
esp_err_t esp_wifi_set_bandwidth(wifi_interface_t ifx, wifi_bandwidth_t bw);
/**
* @brief Get the bandwidth of ESP32 specified interface
*
* @attention 1. API return false if try to get a interface that is not enable
*
* @param ifx interface to be configured
* @param[out] bw store bandwidth of interface ifx
*
* @return
* - ESP_OK: succeed
* - ESP_ERR_WIFI_NOT_INIT: WiFi is not initialized by esp_wifi_init
* - ESP_ERR_WIFI_IF: invalid interface
* - ESP_ERR_INVALID_ARG: invalid argument
*/
esp_err_t esp_wifi_get_bandwidth(wifi_interface_t ifx, wifi_bandwidth_t *bw);
/**
* @brief Set primary/secondary channel of ESP32
*
* @attention 1. This API should be called after esp_wifi_start() and before esp_wifi_stop()
* @attention 2. When ESP32 is in STA mode, this API should not be called when STA is scanning or connecting to an external AP
* @attention 3. When ESP32 is in softAP mode, this API should not be called when softAP has connected to external STAs
* @attention 4. When ESP32 is in STA+softAP mode, this API should not be called when in the scenarios described above
* @attention 5. The channel info set by this API will not be stored in NVS. So If you want to remeber the channel used before wifi stop,
* you need to call this API again after wifi start, or you can call `esp_wifi_set_config()` to store the channel info in NVS.
*
* @param primary for HT20, primary is the channel number, for HT40, primary is the primary channel
* @param second for HT20, second is ignored, for HT40, second is the second channel
*
* @return
* - ESP_OK: succeed
* - ESP_ERR_WIFI_NOT_INIT: WiFi is not initialized by esp_wifi_init
* - ESP_ERR_WIFI_IF: invalid interface
* - ESP_ERR_INVALID_ARG: invalid argument
* - ESP_ERR_WIFI_NOT_STARTED: WiFi is not started by esp_wifi_start
*/
esp_err_t esp_wifi_set_channel(uint8_t primary, wifi_second_chan_t second);
/**
* @brief Get the primary/secondary channel of ESP32
*
* @attention 1. API return false if try to get a interface that is not enable
*
* @param primary store current primary channel
* @param[out] second store current second channel
*
* @return
* - ESP_OK: succeed
* - ESP_ERR_WIFI_NOT_INIT: WiFi is not initialized by esp_wifi_init
* - ESP_ERR_INVALID_ARG: invalid argument
*/
esp_err_t esp_wifi_get_channel(uint8_t *primary, wifi_second_chan_t *second);
/**
* @brief configure country info
*
* @attention 1. It is discouraged to call this API since this doesn't validate the per-country rules,
* it's up to the user to fill in all fields according to local regulations.
* Please use esp_wifi_set_country_code instead.
* @attention 2. The default country is "01" (world safe mode) {.cc="01", .schan=1, .nchan=11, .policy=WIFI_COUNTRY_POLICY_AUTO}.
* @attention 3. The third octet of country code string is one of the following: ' ', 'O', 'I', 'X', otherwise it is considered as ' '.
* @attention 4. When the country policy is WIFI_COUNTRY_POLICY_AUTO, the country info of the AP to which
* the station is connected is used. E.g. if the configured country info is {.cc="US", .schan=1, .nchan=11}
* and the country info of the AP to which the station is connected is {.cc="JP", .schan=1, .nchan=14}
* then the country info that will be used is {.cc="JP", .schan=1, .nchan=14}. If the station disconnected
* from the AP the country info is set back to the country info of the station automatically,
* {.cc="US", .schan=1, .nchan=11} in the example.
* @attention 5. When the country policy is WIFI_COUNTRY_POLICY_MANUAL, then the configured country info is used always.
* @attention 6. When the country info is changed because of configuration or because the station connects to a different
* external AP, the country IE in probe response/beacon of the soft-AP is also changed.
* @attention 7. The country configuration is stored into flash.
* @attention 8. When this API is called, the PHY init data will switch to the PHY init data type corresponding to the
* country info.
*
* @param country the configured country info
*
* @return
* - ESP_OK: succeed
* - ESP_ERR_WIFI_NOT_INIT: WiFi is not initialized by esp_wifi_init
* - ESP_ERR_INVALID_ARG: invalid argument
*/
esp_err_t esp_wifi_set_country(const wifi_country_t *country);
/**
* @brief get the current country info
*
* @param country country info
*
* @return
* - ESP_OK: succeed
* - ESP_ERR_WIFI_NOT_INIT: WiFi is not initialized by esp_wifi_init
* - ESP_ERR_INVALID_ARG: invalid argument
*/
esp_err_t esp_wifi_get_country(wifi_country_t *country);
/**
* @brief Set MAC address of the ESP32 WiFi station or the soft-AP interface.
*
* @attention 1. This API can only be called when the interface is disabled
* @attention 2. ESP32 soft-AP and station have different MAC addresses, do not set them to be the same.
* @attention 3. The bit 0 of the first byte of ESP32 MAC address can not be 1. For example, the MAC address
* can set to be "1a:XX:XX:XX:XX:XX", but can not be "15:XX:XX:XX:XX:XX".
*
* @param ifx interface
* @param mac the MAC address
*
* @return
* - ESP_OK: succeed
* - ESP_ERR_WIFI_NOT_INIT: WiFi is not initialized by esp_wifi_init
* - ESP_ERR_INVALID_ARG: invalid argument
* - ESP_ERR_WIFI_IF: invalid interface
* - ESP_ERR_WIFI_MAC: invalid mac address
* - ESP_ERR_WIFI_MODE: WiFi mode is wrong
* - others: refer to error codes in esp_err.h
*/
esp_err_t esp_wifi_set_mac(wifi_interface_t ifx, const uint8_t mac[6]);
/**
* @brief Get mac of specified interface
*
* @param ifx interface
* @param[out] mac store mac of the interface ifx
*
* @return
* - ESP_OK: succeed
* - ESP_ERR_WIFI_NOT_INIT: WiFi is not initialized by esp_wifi_init
* - ESP_ERR_INVALID_ARG: invalid argument
* - ESP_ERR_WIFI_IF: invalid interface
*/
esp_err_t esp_wifi_get_mac(wifi_interface_t ifx, uint8_t mac[6]);
/**
* @brief The RX callback function in the promiscuous mode.
* Each time a packet is received, the callback function will be called.
*
* @param buf Data received. Type of data in buffer (wifi_promiscuous_pkt_t or wifi_pkt_rx_ctrl_t) indicated by 'type' parameter.
* @param type promiscuous packet type.
*
*/
typedef void (* wifi_promiscuous_cb_t)(void *buf, wifi_promiscuous_pkt_type_t type);
/**
* @brief Register the RX callback function in the promiscuous mode.
*
* Each time a packet is received, the registered callback function will be called.
*
* @param cb callback
*
* @return
* - ESP_OK: succeed
* - ESP_ERR_WIFI_NOT_INIT: WiFi is not initialized by esp_wifi_init
*/
esp_err_t esp_wifi_set_promiscuous_rx_cb(wifi_promiscuous_cb_t cb);
/**
* @brief Enable the promiscuous mode.
*
* @param en false - disable, true - enable
*
* @return
* - ESP_OK: succeed
* - ESP_ERR_WIFI_NOT_INIT: WiFi is not initialized by esp_wifi_init
*/
esp_err_t esp_wifi_set_promiscuous(bool en);
/**
* @brief Get the promiscuous mode.
*
* @param[out] en store the current status of promiscuous mode
*
* @return
* - ESP_OK: succeed
* - ESP_ERR_WIFI_NOT_INIT: WiFi is not initialized by esp_wifi_init
* - ESP_ERR_INVALID_ARG: invalid argument
*/
esp_err_t esp_wifi_get_promiscuous(bool *en);
/**
* @brief Enable the promiscuous mode packet type filter.
*
* @note The default filter is to filter all packets except WIFI_PKT_MISC
*
* @param filter the packet type filtered in promiscuous mode.
*
* @return
* - ESP_OK: succeed
* - ESP_ERR_WIFI_NOT_INIT: WiFi is not initialized by esp_wifi_init
*/
esp_err_t esp_wifi_set_promiscuous_filter(const wifi_promiscuous_filter_t *filter);
/**
* @brief Get the promiscuous filter.
*
* @param[out] filter store the current status of promiscuous filter
*
* @return
* - ESP_OK: succeed
* - ESP_ERR_WIFI_NOT_INIT: WiFi is not initialized by esp_wifi_init
* - ESP_ERR_INVALID_ARG: invalid argument
*/
esp_err_t esp_wifi_get_promiscuous_filter(wifi_promiscuous_filter_t *filter);
/**
* @brief Enable subtype filter of the control packet in promiscuous mode.
*
* @note The default filter is to filter none control packet.
*
* @param filter the subtype of the control packet filtered in promiscuous mode.
*
* @return
* - ESP_OK: succeed
* - ESP_ERR_WIFI_NOT_INIT: WiFi is not initialized by esp_wifi_init
*/
esp_err_t esp_wifi_set_promiscuous_ctrl_filter(const wifi_promiscuous_filter_t *filter);
/**
* @brief Get the subtype filter of the control packet in promiscuous mode.
*
* @param[out] filter store the current status of subtype filter of the control packet in promiscuous mode
*
* @return
* - ESP_OK: succeed
* - ESP_ERR_WIFI_NOT_INIT: WiFi is not initialized by esp_wifi_init
* - ESP_ERR_INVALID_ARG: invalid argument
*/
esp_err_t esp_wifi_get_promiscuous_ctrl_filter(wifi_promiscuous_filter_t *filter);
/**
* @brief Set the configuration of the ESP32 STA or AP
*
* @attention 1. This API can be called only when specified interface is enabled, otherwise, API fail
* @attention 2. For station configuration, bssid_set needs to be 0; and it needs to be 1 only when users need to check the MAC address of the AP.
* @attention 3. ESP32 is limited to only one channel, so when in the soft-AP+station mode, the soft-AP will adjust its channel automatically to be the same as
* the channel of the ESP32 station.
* @attention 4. The configuration will be stored in NVS
*
* @param interface interface
* @param conf station or soft-AP configuration
*
* @return
* - ESP_OK: succeed
* - ESP_ERR_WIFI_NOT_INIT: WiFi is not initialized by esp_wifi_init
* - ESP_ERR_INVALID_ARG: invalid argument
* - ESP_ERR_WIFI_IF: invalid interface
* - ESP_ERR_WIFI_MODE: invalid mode
* - ESP_ERR_WIFI_PASSWORD: invalid password
* - ESP_ERR_WIFI_NVS: WiFi internal NVS error
* - others: refer to the error code in esp_err.h
*/
esp_err_t esp_wifi_set_config(wifi_interface_t interface, wifi_config_t *conf);
/**
* @brief Get configuration of specified interface
*
* @param interface interface
* @param[out] conf station or soft-AP configuration
*
* @return
* - ESP_OK: succeed
* - ESP_ERR_WIFI_NOT_INIT: WiFi is not initialized by esp_wifi_init
* - ESP_ERR_INVALID_ARG: invalid argument
* - ESP_ERR_WIFI_IF: invalid interface
*/
esp_err_t esp_wifi_get_config(wifi_interface_t interface, wifi_config_t *conf);
/**
* @brief Get STAs associated with soft-AP
*
* @attention SSC only API
*
* @param[out] sta station list
* ap can get the connected sta's phy mode info through the struct member
* phy_11b，phy_11g，phy_11n，phy_lr in the wifi_sta_info_t struct.
* For example, phy_11b = 1 imply that sta support 802.11b mode
*
* @return
* - ESP_OK: succeed
* - ESP_ERR_WIFI_NOT_INIT: WiFi is not initialized by esp_wifi_init
* - ESP_ERR_INVALID_ARG: invalid argument
* - ESP_ERR_WIFI_MODE: WiFi mode is wrong
* - ESP_ERR_WIFI_CONN: WiFi internal error, the station/soft-AP control block is invalid
*/
esp_err_t esp_wifi_ap_get_sta_list(wifi_sta_list_t *sta);
/**
* @brief Get AID of STA connected with soft-AP
*
* @param mac STA's mac address
* @param[out] aid Store the AID corresponding to STA mac
*
* @return
* - ESP_OK: succeed
* - ESP_ERR_WIFI_NOT_INIT: WiFi is not initialized by esp_wifi_init
* - ESP_ERR_INVALID_ARG: invalid argument
* - ESP_ERR_NOT_FOUND: Requested resource not found
* - ESP_ERR_WIFI_MODE: WiFi mode is wrong
* - ESP_ERR_WIFI_CONN: WiFi internal error, the station/soft-AP control block is invalid
*/
esp_err_t esp_wifi_ap_get_sta_aid(const uint8_t mac[6], uint16_t *aid);
/**
* @brief Set the WiFi API configuration storage type
*
* @attention 1. The default value is WIFI_STORAGE_FLASH
*
* @param storage : storage type
*
* @return
* - ESP_OK: succeed
* - ESP_ERR_WIFI_NOT_INIT: WiFi is not initialized by esp_wifi_init
* - ESP_ERR_INVALID_ARG: invalid argument
*/
esp_err_t esp_wifi_set_storage(wifi_storage_t storage);
/**
* @brief Function signature for received Vendor-Specific Information Element callback.
* @param ctx Context argument, as passed to esp_wifi_set_vendor_ie_cb() when registering callback.
* @param type Information element type, based on frame type received.
* @param sa Source 802.11 address.
* @param vnd_ie Pointer to the vendor specific element data received.
* @param rssi Received signal strength indication.
*/
typedef void (*esp_vendor_ie_cb_t) (void *ctx, wifi_vendor_ie_type_t type, const uint8_t sa[6], const vendor_ie_data_t *vnd_ie, int rssi);
/**
* @brief Set 802.11 Vendor-Specific Information Element
*
* @param enable If true, specified IE is enabled. If false, specified IE is removed.
* @param type Information Element type. Determines the frame type to associate with the IE.
* @param idx Index to set or clear. Each IE type can be associated with up to two elements (indices 0 & 1).
* @param vnd_ie Pointer to vendor specific element data. First 6 bytes should be a header with fields matching vendor_ie_data_t.
* If enable is false, this argument is ignored and can be NULL. Data does not need to remain valid after the function returns.
*
* @return
* - ESP_OK: succeed
* - ESP_ERR_WIFI_NOT_INIT: WiFi is not initialized by esp_wifi_init()
* - ESP_ERR_INVALID_ARG: Invalid argument, including if first byte of vnd_ie is not WIFI_VENDOR_IE_ELEMENT_ID (0xDD)
* or second byte is an invalid length.
* - ESP_ERR_NO_MEM: Out of memory
*/
esp_err_t esp_wifi_set_vendor_ie(bool enable, wifi_vendor_ie_type_t type, wifi_vendor_ie_id_t idx, const void *vnd_ie);
/**
* @brief Register Vendor-Specific Information Element monitoring callback.
*
* @param cb Callback function
* @param ctx Context argument, passed to callback function.
*
* @return
* - ESP_OK: succeed
* - ESP_ERR_WIFI_NOT_INIT: WiFi is not initialized by esp_wifi_init
*/
esp_err_t esp_wifi_set_vendor_ie_cb(esp_vendor_ie_cb_t cb, void *ctx);
/**
* @brief Set maximum transmitting power after WiFi start.
*
* @attention 1. Maximum power before wifi startup is limited by PHY init data bin.
* @attention 2. The value set by this API will be mapped to the max_tx_power of the structure wifi_country_t variable.
* @attention 3. Mapping Table {Power, max_tx_power} = {{8, 2}, {20, 5}, {28, 7}, {34, 8}, {44, 11},
* {52, 13}, {56, 14}, {60, 15}, {66, 16}, {72, 18}, {80, 20}}.
* @attention 4. Param power unit is 0.25dBm, range is [8, 84] corresponding to 2dBm - 20dBm.
* @attention 5. Relationship between set value and actual value. As follows: {set value range, actual value} = {{[8, 19],8}, {[20, 27],20}, {[28, 33],28}, {[34, 43],34}, {[44, 51],44}, {[52, 55],52}, {[56, 59],56}, {[60, 65],60}, {[66, 71],66}, {[72, 79],72}, {[80, 84],80}}.
*
* @param power Maximum WiFi transmitting power.
*
* @return
* - ESP_OK: succeed
* - ESP_ERR_WIFI_NOT_INIT: WiFi is not initialized by esp_wifi_init
* - ESP_ERR_WIFI_NOT_STARTED: WiFi is not started by esp_wifi_start
* - ESP_ERR_INVALID_ARG: invalid argument, e.g. parameter is out of range
*/
esp_err_t esp_wifi_set_max_tx_power(int8_t power);