952df01a10
While this may reduce esp_wifi.h file readability for people who don't have a "go to definition" function in their editors, this is needed to decouple esp_wifi and esp_event headers, and possibly other headers which may use wifi types in the future.
586 lines
19 KiB
C
586 lines
19 KiB
C
// Copyright 2015-2016 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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// 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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/* Notes about WiFi Programming
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*
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* The esp32 WiFi programming model can be depicted as following picture:
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*
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*
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* default handler user handler
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* ------------- --------------- ---------------
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* | | event | | callback or | |
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* | tcpip | ---------> | event | ----------> | application |
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* | stack | | task | event | task |
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* |-----------| |-------------| |-------------|
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* /|\ |
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* | |
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* event | |
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* | |
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* | |
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* --------------- |
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* | | |
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* | WiFi Driver |/__________________|
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* | |\ API call
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* | |
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* |-------------|
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*
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* The WiFi driver can be consider as black box, it knows nothing about the high layer code, such as
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* TCPIP stack, application task, event task etc, all it can do is to receive API call from high layer
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* or post event queue to a specified Queue, which is initialized by API esp_wifi_init().
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*
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* The event task is a daemon task, which receives events from WiFi driver or from other subsystem, such
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* as TCPIP stack, event task will call the default callback function on receiving the event. For example,
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* on receiving event SYSTEM_EVENT_STA_CONNECTED, it will call tcpip_adapter_start() to start the DHCP
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* client in it's default handler.
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*
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* Application can register it's own event callback function by API esp_event_init, then the application callback
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* function will be called after the default callback. Also, if application doesn't want to execute the callback
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* in the event task, what it needs to do is to post the related event to application task in the application callback function.
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*
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* The application task (code) generally mixes all these thing together, it calls APIs to init the system/WiFi and
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* handle the events when necessary.
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*
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*/
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#ifndef __ESP_WIFI_H__
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#define __ESP_WIFI_H__
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#include <stdint.h>
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#include <stdbool.h>
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#include "freertos/FreeRTOS.h"
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#include "freertos/queue.h"
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#include "rom/queue.h"
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#include "esp_err.h"
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#include "esp_wifi_types.h"
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#include "esp_event.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef struct {
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system_event_handler_t event_handler; /**< WiFi event handler */
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} wifi_init_config_t;
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#define WIFI_INIT_CONFIG_DEFAULT() { \
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.event_handler = &esp_event_send, \
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};
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/**
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* @brief Init WiFi
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* Alloc resource for WiFi driver, such as WiFi control structure, RX/TX buffer,
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* WiFi NVS structure etc, this WiFi also start WiFi task
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*
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* @attention 1. This API must be called before all other WiFi API can be called
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* @attention 2. Generally we should init event_q in *config, WiFi driver will post the event
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* to this queue when event happens, such as, when station connects to WiFi, WiFi driver
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* will post station connected event to this queue. If the queue is not initialized, WiFi
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* will not post any events
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*
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* @param wifi_init_config_t *config : provide WiFi init configuration
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*
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* @return ESP_OK : succeed
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* @return others : fail
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*/
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esp_err_t esp_wifi_init(wifi_init_config_t *config);
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/**
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* @brief Deinit WiFi
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* Free all resource allocated in esp_wifi_init and stop WiFi task
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*
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* @attention 1. This API should be called if you want to remove WiFi driver from the system
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*
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* @return ESP_OK : succeed
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* @return others : fail
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*/
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esp_err_t esp_wifi_deinit(void);
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/**
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* @brief Set the WiFi operating mode
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*
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* Set the WiFi operating mode as station, soft-AP or station+soft-AP,
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* The default mode is soft-AP mode.
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*
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* @param wifi_mode_t mode : WiFi operating modes:
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*
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* @return ESP_OK : succeed
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* @return others : fail
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*/
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esp_err_t esp_wifi_set_mode(wifi_mode_t mode);
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/**
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* @brief Get current operating mode of WiFi
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*
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* @param wifi_mode_t *mode : store current WiFi mode
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*
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* @return ESP_OK : succeed
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* @return others : fail
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*/
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esp_err_t esp_wifi_get_mode(wifi_mode_t *mode);
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/**
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* @brief Start WiFi according to current configuration
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* If mode is WIFI_MODE_STA, it create station control block and start station
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* If mode is WIFI_MODE_AP, it create soft-AP control block and start soft-AP
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* If mode is WIFI_MODE_APSTA, it create soft-AP and station control block and start soft-AP and station
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*
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* @param null
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*
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* @return ESP_OK : succeed
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* @return others : fail
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*/
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esp_err_t esp_wifi_start(void);
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/**
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* @brief Stop WiFi
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If mode is WIFI_MODE_STA, it stop station and free station control block
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* If mode is WIFI_MODE_AP, it stop soft-AP and free soft-AP control block
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* If mode is WIFI_MODE_APSTA, it stop station/soft-AP and free station/soft-AP control block
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*
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* @param null
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*
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* @return ESP_OK : succeed
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* @return others : fail
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*/
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esp_err_t esp_wifi_stop(void);
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/**
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* @brief Connect the ESP32 WiFi station to the AP.
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*
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* @attention 1. This API only impact WIFI_MODE_STA or WIFI_MODE_APSTA mode
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* @attention 2. If the ESP32 is connected to an AP, call esp_wifi_disconnect to disconnect.
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*
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* @param null
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*
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* @return ESP_OK : succeed
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* @return others : fail
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*/
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esp_err_t esp_wifi_connect(void);
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/**
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* @brief Disconnect the ESP32 WiFi station from the AP.
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*
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* @param null
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*
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* @return ESP_OK : succeed
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* @return others : fail
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*/
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esp_err_t esp_wifi_disconnect(void);
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/**
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* @brief Currently this API is just an stub API
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*
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* @param null
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*
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* @return ESP_OK : succeed
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* @return others : fail
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*/
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esp_err_t esp_wifi_clear_fast_connect(void);
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/**
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* @brief Kick the all station or associated id equals to aid
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*
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* @param uint16_t aid : when aid is 0, kick all stations, otherwise kick station whose associated id is aid
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*
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* @return ESP_OK : succeed
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* @return others : fail
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*/
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esp_err_t esp_wifi_kick_station(uint16_t aid);
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/**
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* @brief Scan all available APs.
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*
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* @attention If this API is called, the found APs are stored in WiFi driver dynamic allocated memory and the
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* will be freed in esp_wifi_get_ap_list, so generally, call esp_wifi_get_ap_list to cause
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* the memory to be freed once the scan is done
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*
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* @param struct scan_config *config : configuration of scanning
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* @param bool block : if block is true, this API will block the caller until the scan is done, otherwise
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* it will return immediately
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*
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* @return ESP_OK : succeed
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* @return others : fail
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*/
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esp_err_t esp_wifi_scan_start(wifi_scan_config_t *conf, bool block);
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/**
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* @brief Stop the scan in process
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*
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* @param null
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* @return ESP_OK : succeed
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* @return others : fail
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*/
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esp_err_t esp_wifi_scan_stop(void);
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/**
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* @brief Get number of APs found in last scan
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*
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* @param uint16_t *number : store number of APIs found in last scan
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*
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* @attention This API can only be called when the scan is completed, otherwise it may get wrong value
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*
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* @return ESP_OK : succeed
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* @return others : fail
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*/
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esp_err_t esp_wifi_get_ap_num(uint16_t *number);
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/**
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* @brief Get AP list found in last scan
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*
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* @param uint16_t *number : as input param, it stores max AP number ap_list can hold, as output param, it store
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the actual AP number this API returns
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* @param wifi_ap_list_t *ap_list : a list to hold the found APs
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*
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* @return ESP_OK : succeed
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* @return others : fail
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*/
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esp_err_t esp_wifi_get_ap_list(uint16_t *number, wifi_ap_list_t *ap_list);
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/**
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* @brief Set current power save type
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*
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* @param wifi_ps_type_t type : power save type
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*
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* @return ESP_OK : succeed
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* @return others : fail
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*/
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esp_err_t esp_wifi_set_ps(wifi_ps_type_t type);
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/**
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* @brief Get current power save type
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*
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* @param wifi_ps_type_t *type : store current power save type
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*
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* @return ESP_OK : succeed
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* @return others : fail
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*/
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esp_err_t esp_wifi_get_ps(wifi_ps_type_t *type);
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/**
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* @brief Set protocol type of specified interface
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* The default protocol is (WIFI_PROTOCOL_11B|WIFI_PROTOCOL_11G|WIFI_PROTOCOL_11N)
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*
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* @attention Currently we only support 802.11b or 802.11bg or 802.11bgn mode
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*
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* @param wifi_interface_t ifx : interfaces
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* @param uint8_t protocol : WiFi protocol bitmap
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*
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* @return ESP_OK : succeed
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* @return others : fail
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*/
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esp_err_t esp_wifi_set_protocol(wifi_interface_t ifx, uint8_t protocol_bitmap);
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/**
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* @brief Get the current protocol bitmap of specified ifx
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*
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* @param wifi_interface_t ifx : interfaces
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* @param uint8_t protocol : store current WiFi protocol bitmap of interface ifx
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*
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* @return ESP_OK : succeed
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* @return others : fail
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*/
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esp_err_t esp_wifi_get_protocol(wifi_interface_t ifx, uint8_t *protocol_bitmap);
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/**
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* @brief Set the bandwidth of ESP32 specified interface
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*
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* @attention 1. API return false if try to configure a interface that is not enable
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* @attention 2. WIFI_BW_HT40 is supported only when the interface support 11N
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*
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* @param wifi_interface_t ifx : interface to be configured
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* @param wifi_bandwidth_t bw : bandwidth
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*
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* @return ESP_OK : succeed
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* @return others : fail
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*/
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esp_err_t esp_wifi_set_bandwidth(wifi_interface_t ifx, wifi_bandwidth_t bw);
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/**
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* @brief Get the bandwidth of ESP32 specified interface
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*
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* @attention 1. API return false if try to get a interface that is not enable
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*
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* @param wifi_interface_t ifx : interface to be configured
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* @param wifi_bandwidth_t *bw : store bandwidth of interface ifx
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*
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* @return ESP_OK : succeed
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* @return others : fail
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*/
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esp_err_t esp_wifi_get_bandwidth(wifi_interface_t ifx, wifi_bandwidth_t *bw);
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/**
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* @brief Set primary/second channel of ESP32
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*
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* @attention 1. This is a special API for sniffer
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*
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* @param uint8_t primary : for HT20, primary is the channel number, for HT40, primary is the primary channel
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* @param wifi_second_chan_t second : for HT20, second is ignored, for HT40, second is the second channel
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*
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* @return ESP_OK : succeed
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* @return others : fail
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*/
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esp_err_t esp_wifi_set_channel(uint8_t primary, wifi_second_chan_t second);
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/**
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* @brief Get the primary/second channel of ESP32
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*
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* @attention 1. API return false if try to get a interface that is not enable
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*
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* @param uint8_t *primary : store current primary channel
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* @param wifi_second_chan_t *second : store current second channel
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*
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* @return ESP_OK : succeed
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* @return others : fail
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*/
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esp_err_t esp_wifi_get_channel(uint8_t *primary, wifi_second_chan_t *second);
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/**
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* @brief Set country code
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* The default value is WIFI_COUNTRY_CN
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*
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* @param wifi_country_t country : country type
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*
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* @return ESP_OK : succeed
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* @return others : fail
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*/
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esp_err_t esp_wifi_set_country(wifi_country_t country);
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/**
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* @brief Get country code
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*
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* @param wifi_country_t country : store current country
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*
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* @return ESP_OK : succeed
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* @return others : fail
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*/
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esp_err_t esp_wifi_get_country(wifi_country_t *country);
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/**
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* @brief Set MAC address of the ESP32 WiFi station or the soft-AP interface.
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*
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* @attention 1. This API can only be called when the interface is disabled
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* @attention 2. ESP32 soft-AP and station have different MAC addresses, do not set them to be the same.
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* - The bit0 of the first byte of ESP32 MAC address can not be 1. For example, the MAC address
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* can set to be "1a:XX:XX:XX:XX:XX", but can not be "15:XX:XX:XX:XX:XX".
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*
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* @param wifi_interface_t ifx : interface
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* @param uint8 mac[6]: the MAC address.
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*
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* @return true : succeed
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* @return false : fail
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*/
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esp_err_t esp_wifi_set_mac(wifi_interface_t ifx, uint8_t mac[6]);
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/**
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* @brief Get mac of specified interface
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*
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* @param uint8_t mac[6] : store mac of this interface ifx
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*
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* @return ESP_OK : succeed
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* @return others : fail
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*/
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esp_err_t esp_wifi_get_mac(wifi_interface_t ifx, uint8_t mac[6]);
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/**
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* @brief The RX callback function in the promiscuous mode.
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*
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* Each time a packet is received, the callback function will be called.
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*
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* @param void *buf : the data received
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* @param uint16_t len : data length
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*
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* @return ESP_OK : succeed
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* @return others : fail
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*/
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typedef void (* wifi_promiscuous_cb_t)(void *buf, uint16_t len);
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/**
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* @brief Register the RX callback function in the promiscuous mode.
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*
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* Each time a packet is received, the registered callback function will be called.
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*
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* @param wifi_promiscuous_cb_t cb : callback
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*
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* @return ESP_OK : succeed
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* @return others : fail
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*/
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esp_err_t esp_wifi_set_promiscuous_rx_cb(wifi_promiscuous_cb_t cb);
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/**
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* @brief Enable the promiscuous mode.
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*
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* @param bool promiscuous : false - disable / true - enable
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*
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* @return ESP_OK : succeed
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* @return others : fail
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*/
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esp_err_t esp_wifi_set_promiscuous(bool en);
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/**
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* @brief Get the promiscuous mode.
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*
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* @param bool *enable : store the current status of promiscuous mode
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*
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* @return ESP_OK : succeed
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* @return others : fail
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*/
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esp_err_t esp_wifi_get_promiscuous(bool *en);
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/**
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* @brief Set the configuration of the ESP32 STA or AP
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*
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* @attention 1. This API can be called only when specified interface is enabled, otherwise, API fail
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* @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.
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* @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
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* the channel of the ESP32 station.
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*
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* @param wifi_interface_t ifx : interface
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* @param wifi_config_t *conf : station or soft-AP configuration
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*
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* @return ESP_OK : succeed
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* @return others : fail
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*/
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esp_err_t esp_wifi_set_config(wifi_interface_t ifx, wifi_config_t *conf);
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/**
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* @brief Get configuration of specified interface
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*
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* @param wifi_interface_t ifx : interface
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* @param wifi_config_t *conf : station or soft-AP configuration
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*
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* @return ESP_OK : succeed
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* @return others : fail
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*/
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esp_err_t esp_wifi_get_config(wifi_interface_t ifx, wifi_config_t *conf);
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/**
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* @brief Get STAs associated with soft-AP
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*
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* @attention SSC only API
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*
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* @param struct station_info **station : station list
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*
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* @return ESP_OK : succeed
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* @return others : fail
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*/
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esp_err_t esp_wifi_get_station_list(struct station_info **station);
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esp_err_t esp_wifi_free_station_list(void);
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/**
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* @brief Set the WiFi API configuration storage type
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*
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* @attention 1. The default value is WIFI_STORAGE_FLASH
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*
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* @param wifi_storage_t storage : storage type
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*
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* @return ESP_OK : succeed
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* @return others : fail
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*/
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esp_err_t esp_wifi_set_storage(wifi_storage_t storage);
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/**
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* @brief The WiFi RX callback function
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*
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* Each time the WiFi need to forward the packets to high layer, the callback function will be called
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*
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*/
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typedef esp_err_t (*wifi_rxcb_t)(void *buffer, uint16_t len, void *eb);
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/**
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* @brief Set the WiFi RX callback
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*
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* @attention 1. Currently we support only one RX callback for each interface
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*
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* @param wifi_interface_t ifx : interface
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* @param wifi_rxcb_t fn : WiFi RX callback
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*
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* @return ESP_OK : succeed
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* @return others : fail
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*/
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esp_err_t esp_wifi_reg_rxcb(wifi_interface_t ifx, wifi_rxcb_t fn);
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/**
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* @brief Set auto connect
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* The default value is true
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*
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* @attention 1.
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*
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* @param bool en : true - enable auto connect / false - disable auto connect
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|
*
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* @return ESP_OK : succeed
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* @return others : fail
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|
*/
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esp_err_t esp_wifi_set_auto_connect(bool en);
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|
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/**
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|
* @brief Get the auto connect flag
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|
*
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* @param bool *en : store current auto connect configuration
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|
*
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* @return ESP_OK : succeed
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|
* @return others : fail
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|
*/
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|
esp_err_t esp_wifi_get_auto_connect(bool *en);
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|
|
|
/**
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|
* @brief Set vendor specific element
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|
*
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* @param bool enable : enable or not
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|
* @param wifi_vendor_ie_type_t type : 0 - WIFI_VND_IE_TYPE_BEACON
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|
* 1 - WIFI_VND_IE_TYPE_PROBE_REQ
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* 2 - WIFI_VND_IE_TYPE_PROBE_RESP
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* 3 - WIFI_VND_IE_TYPE_ASSOC_REQ
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|
* 4 - WIFI_VND_IE_TYPE_ASSOC_RESP
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|
* @param wifi_vendor_ie_id_t idx : 0 - WIFI_VND_IE_ID_0
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|
1 - WIFI_VND_IE_ID_1
|
|
* @param uint8_t *vnd_ie : pointer to a vendor specific element
|
|
*
|
|
* @return ESP_OK : succeed
|
|
* @return others : fail
|
|
*/
|
|
esp_err_t esp_wifi_set_vendor_ie(bool enable, wifi_vendor_ie_type_t type, wifi_vendor_ie_id_t idx, uint8_t *vnd_ie);
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|
|
|
/**
|
|
* @brief Define function pointer for vendor specific element callback
|
|
* @param void *ctx : reserved
|
|
* @param wifi_vendor_ie_type_t type : 0 - WIFI_VND_IE_TYPE_BEACON
|
|
* 1 - WIFI_VND_IE_TYPE_PROBE_REQ
|
|
* 2 - WIFI_VND_IE_TYPE_PROBE_RESP
|
|
* 3 - WIFI_VND_IE_TYPE_ASSOC_REQ
|
|
* 4 - WIFI_VND_IE_TYPE_ASSOC_RESP
|
|
* @param const uint8_t sa[6] : source address
|
|
* @param const uint8_t *vnd_ie : pointer to a vendor specific element
|
|
* @param int 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 uint8_t *vnd_ie, int rssi);
|
|
|
|
/**
|
|
* @brief Set vendor specific element callback
|
|
*
|
|
* @param esp_vendor_ie_cb_t cb : callback function
|
|
* @param void *ctx : reserved
|
|
*
|
|
* @return ESP_OK : succeed
|
|
* @return others : fail
|
|
*/
|
|
esp_err_t esp_wifi_set_vendor_ie_cb(esp_vendor_ie_cb_t cb, void *ctx);
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* __ESP_WIFI_H__ */
|