// 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. /* 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 SYSTEM_EVENT_STA_CONNECTED, it will call tcpip_adapter_start() 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 #include #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) /*!< Invalod 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 */ /** * @brief WiFi stack configuration parameters passed to esp_wifi_init call. */ typedef struct { system_event_handler_t event_handler; /**< WiFi event handler */ 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 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 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 */ 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_ESP32_SPIRAM_SUPPORT | CONFIG_ESP32S2_SPIRAM_SUPPORT) #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 #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_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; extern uint64_t g_wifi_feature_caps; #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 #define CONFIG_FEATURE_WPA3_SAE_BIT (1<<0) #define CONFIG_FEATURE_CACHE_TX_BUF_BIT (1<<1) #define WIFI_INIT_CONFIG_DEFAULT() { \ .event_handler = &esp_event_send_internal, \ .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,\ .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,\ .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 = g_wifi_feature_caps, \ .magic = WIFI_INIT_CONFIG_MAGIC\ }; /** * @brief Init WiFi * Alloc resource for WiFi driver, such as WiFi control structure, RX/TX buffer, * WiFi NVS structure etc, this WiFi also start 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 init the config to default values, this can * guarantee all the fields got correct value when more fields are added into wifi_init_config_t * in future release. If you want to set your owner 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 init 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 soft-AP 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_get_auto_connect, * - 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_start_scan() 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. * If you want to do reconnection after ESP32 received disconnect event, remember to add the maximum retry time, otherwise the called * scan will not work. This is especially true when the AP doesn't exist, and you still try reconnection after ESP32 received disconnect * event with the reason code WIFI_REASON_NO_AP_FOUND. * * @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 the * will be freed in esp_wifi_scan_get_ap_records, so generally, call esp_wifi_scan_get_ap_records to cause * the memory to be freed 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 of scanning * @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 APIs 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 * * @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 information of AP which the ESP32 station is associated with * * @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 Currently we only support 802.11b or 802.11bg or 802.11bgn 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() * @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 * * @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_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. The default country is {.cc="CN", .schan=1, .nchan=13, policy=WIFI_COUNTRY_POLICY_AUTO} * @attention 2. 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="USA", .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 back to the country info of the station automatically, * {.cc="US", .schan=1, .nchan=11} in the example. * @attention 3. When the country policy is WIFI_COUNTRY_POLICY_MANUAL, always use the configured country info. * @attention 4. 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 changed also. * @attention 5. The country configuration is stored into flash. * @attention 6. This API doesn't validate the per-country rules, it's up to the user to fill in all fields according to * local regulations. * @attention 7. 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_WIFI_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. * * @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 erro 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}, {78, 20}}. * @attention 4. Param power unit is 0.25dBm, range is [8, 78] corresponding to 2dBm - 20dBm. * @attention 5. Relationship between set value and actual value. As follows: * +------------+--------------+ * | set value | 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, 77] | 72 | * +------------+--------------+ * | 78 | 78 | * +------------+--------------+ * @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_START: WiFi is not started by esp_wifi_start * - ESP_ERR_WIFI_ARG: invalid argument, e.g. parameter is out of range */ esp_err_t esp_wifi_set_max_tx_power(int8_t power); /** * @brief Get maximum transmiting power after WiFi start * * @param power Maximum WiFi transmitting power, unit is 0.25dBm. * * @return * - ESP_OK: succeed * - ESP_ERR_WIFI_NOT_INIT: WiFi is not initialized by esp_wifi_init * - ESP_ERR_WIFI_NOT_START: WiFi is not started by esp_wifi_start * - ESP_ERR_WIFI_ARG: invalid argument */ esp_err_t esp_wifi_get_max_tx_power(int8_t *power); /** * @brief Set mask to enable or disable some WiFi events * * @attention 1. Mask can be created by logical OR of various WIFI_EVENT_MASK_ constants. * Events which have corresponding bit set in the mask will not be delivered to the system event handler. * @attention 2. Default WiFi event mask is WIFI_EVENT_MASK_AP_PROBEREQRECVED. * @attention 3. There may be lots of stations sending probe request data around. * Don't unmask this event unless you need to receive probe request data. * * @param mask WiFi event mask. * * @return * - ESP_OK: succeed * - ESP_ERR_WIFI_NOT_INIT: WiFi is not initialized by esp_wifi_init */ esp_err_t esp_wifi_set_event_mask(uint32_t mask); /** * @brief Get mask of WiFi events * * @param mask WiFi event mask. * * @return * - ESP_OK: succeed * - ESP_ERR_WIFI_NOT_INIT: WiFi is not initialized by esp_wifi_init * - ESP_ERR_WIFI_ARG: invalid argument */ esp_err_t esp_wifi_get_event_mask(uint32_t *mask); /** * @brief Send raw ieee80211 data * * @attention Currently only support for sending beacon/probe request/probe response/action and non-QoS * data frame * * @param ifx interface if the Wi-Fi mode is Station, the ifx should be WIFI_IF_STA. If the Wi-Fi * mode is SoftAP, the ifx should be WIFI_IF_AP. If the Wi-Fi mode is Station+SoftAP, the * ifx should be WIFI_IF_STA or WIFI_IF_AP. If the ifx is wrong, the API returns ESP_ERR_WIFI_IF. * @param buffer raw ieee80211 buffer * @param len the length of raw buffer, the len must be <= 1500 Bytes and >= 24 Bytes * @param en_sys_seq indicate whether use the internal sequence number. If en_sys_seq is false, the * sequence in raw buffer is unchanged, otherwise it will be overwritten by WiFi driver with * the system sequence number. * Generally, if esp_wifi_80211_tx is called before the Wi-Fi connection has been set up, both * en_sys_seq==true and en_sys_seq==false are fine. However, if the API is called after the Wi-Fi * connection has been set up, en_sys_seq must be true, otherwise ESP_ERR_WIFI_ARG is returned. * * @return * - ESP_OK: success * - ESP_ERR_WIFI_IF: Invalid interface * - ESP_ERR_INVALID_ARG: Invalid parameter * - ESP_ERR_WIFI_NO_MEM: out of memory */ esp_err_t esp_wifi_80211_tx(wifi_interface_t ifx, const void *buffer, int len, bool en_sys_seq); /** * @brief The RX callback function of Channel State Information(CSI) data. * * Each time a CSI data is received, the callback function will be called. * * @param ctx context argument, passed to esp_wifi_set_csi_rx_cb() when registering callback function. * @param data CSI data received. The memory that it points to will be deallocated after callback function returns. * */ typedef void (* wifi_csi_cb_t)(void *ctx, wifi_csi_info_t *data); /** * @brief Register the RX callback function of CSI data. * * Each time a CSI data is received, the callback function will be called. * * @param cb callback * @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_csi_rx_cb(wifi_csi_cb_t cb, void *ctx); /** * @brief Set CSI data configuration * * @param config configuration * * return * - ESP_OK: succeed * - ESP_ERR_WIFI_NOT_INIT: WiFi is not initialized by esp_wifi_init * - ESP_ERR_WIFI_NOT_START: WiFi is not started by esp_wifi_start or promiscuous mode is not enabled * - ESP_ERR_INVALID_ARG: invalid argument */ esp_err_t esp_wifi_set_csi_config(const wifi_csi_config_t *config); /** * @brief Enable or disable CSI * * @param en true - enable, false - disable * * return * - ESP_OK: succeed * - ESP_ERR_WIFI_NOT_INIT: WiFi is not initialized by esp_wifi_init * - ESP_ERR_WIFI_NOT_START: WiFi is not started by esp_wifi_start or promiscuous mode is not enabled * - ESP_ERR_INVALID_ARG: invalid argument */ esp_err_t esp_wifi_set_csi(bool en); /** * @brief Set antenna GPIO configuration * * @param config Antenna GPIO configuration. * * @return * - ESP_OK: succeed * - ESP_ERR_WIFI_NOT_INIT: WiFi is not initialized by esp_wifi_init * - ESP_ERR_WIFI_ARG: Invalid argument, e.g. parameter is NULL, invalid GPIO number etc */ esp_err_t esp_wifi_set_ant_gpio(const wifi_ant_gpio_config_t *config); /** * @brief Get current antenna GPIO configuration * * @param config Antenna GPIO configuration. * * @return * - ESP_OK: succeed * - ESP_ERR_WIFI_NOT_INIT: WiFi is not initialized by esp_wifi_init * - ESP_ERR_WIFI_ARG: invalid argument, e.g. parameter is NULL */ esp_err_t esp_wifi_get_ant_gpio(wifi_ant_gpio_config_t *config); /** * @brief Set antenna configuration * * @param config Antenna configuration. * * @return * - ESP_OK: succeed * - ESP_ERR_WIFI_NOT_INIT: WiFi is not initialized by esp_wifi_init * - ESP_ERR_WIFI_ARG: Invalid argument, e.g. parameter is NULL, invalid antenna mode or invalid GPIO number */ esp_err_t esp_wifi_set_ant(const wifi_ant_config_t *config); /** * @brief Get current antenna configuration * * @param config Antenna configuration. * * @return * - ESP_OK: succeed * - ESP_ERR_WIFI_NOT_INIT: WiFi is not initialized by esp_wifi_init * - ESP_ERR_WIFI_ARG: invalid argument, e.g. parameter is NULL */ esp_err_t esp_wifi_get_ant(wifi_ant_config_t *config); /** * @brief Get the TSF time * In Station mode or SoftAP+Station mode if station is not connected or station doesn't receive at least * one beacon after connected, will return 0 * * @attention Enabling power save may cause the return value inaccurate, except WiFi modem sleep * * @param interface The interface whose tsf_time is to be retrieved. * * @return 0 or the TSF time */ int64_t esp_wifi_get_tsf_time(wifi_interface_t interface); /** * @brief Set the inactive time of the ESP32 STA or AP * * @attention 1. For Station, If the station does not receive a beacon frame from the connected SoftAP during the inactive time, * disconnect from SoftAP. Default 6s. * @attention 2. For SoftAP, If the softAP doesn't receive any data from the connected STA during inactive time, * the softAP will force deauth the STA. Default is 300s. * @attention 3. The inactive time configuration is not stored into flash * * @param ifx interface to be configured. * @param sec Inactive time. Unit seconds. * * @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_ARG: invalid argument, For Station, if sec is less than 3. For SoftAP, if sec is less than 10. */ esp_err_t esp_wifi_set_inactive_time(wifi_interface_t ifx, uint16_t sec); /** * @brief Get inactive time of specified interface * * @param ifx Interface to be configured. * @param sec Inactive time. Unit seconds. * * @return * - ESP_OK: succeed * - ESP_ERR_WIFI_NOT_INIT: WiFi is not initialized by esp_wifi_init * - ESP_ERR_WIFI_ARG: invalid argument */ esp_err_t esp_wifi_get_inactive_time(wifi_interface_t ifx, uint16_t *sec); /** * @brief Dump WiFi statistics * * @param modules statistic modules to be dumped * * @return * - ESP_OK: succeed * - others: failed */ esp_err_t esp_wifi_statis_dump(uint32_t modules); /** * @brief Set RSSI threshold below which APP will get an event * * @attention This API needs to be called every time after WIFI_EVENT_STA_BSS_RSSI_LOW event is received. * * @param rssi threshold value in dbm between -100 to 0 * * @return * - ESP_OK: succeed * - ESP_ERR_WIFI_NOT_INIT: WiFi is not initialized by esp_wifi_init * - ESP_ERR_WIFI_ARG: invalid argument */ esp_err_t esp_wifi_set_rssi_threshold(int32_t rssi); #ifdef __cplusplus } #endif #endif /* __ESP_WIFI_H__ */