// 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.
#ifndef __ESP_EVENT_H__
#define __ESP_EVENT_H__
#include <stdint.h>
#include <stdbool.h>
#include "esp_err.h"
#include "esp_wifi.h"
#include "tcpip_adapter.h"
#ifdef __cplusplus
extern "C" {
#endif
typedef enum {
SYSTEM_EVENT_WIFI_READY = 0, /**< ESP32 WiFi ready */
SYSTEM_EVENT_SCAN_DONE, /**< ESP32 finish scanning AP */
SYSTEM_EVENT_STA_START, /**< ESP32 station start */
SYSTEM_EVENT_STA_STOP, /**< ESP32 station stop */
SYSTEM_EVENT_STA_CONNECTED, /**< ESP32 station connected to AP */
SYSTEM_EVENT_STA_DISCONNECTED, /**< ESP32 station disconnected from AP */
SYSTEM_EVENT_STA_AUTHMODE_CHANGE, /**< the auth mode of AP connected by ESP32 station changed */
SYSTEM_EVENT_STA_GOT_IP, /**< ESP32 station got IP from connected AP */
SYSTEM_EVENT_AP_START, /**< ESP32 soft-AP start */
SYSTEM_EVENT_AP_STOP, /**< ESP32 soft-AP stop */
SYSTEM_EVENT_AP_STACONNECTED, /**< a station connected to ESP32 soft-AP */
SYSTEM_EVENT_AP_STADISCONNECTED, /**< a station disconnected from ESP32 soft-AP */
SYSTEM_EVENT_AP_PROBEREQRECVED, /**< Receive probe request packet in soft-AP interface */
SYSTEM_EVENT_MAX
} system_event_id_t;
typedef struct {
uint32_t status; /**< status of scanning APs */
uint8_t number;
uint8_t scan_id;
} system_event_sta_scan_done_t;
typedef struct {
uint8_t ssid[32]; /**< SSID of connected AP */
uint8_t ssid_len; /**< SSID length of connected AP */
uint8_t bssid[6]; /**< BSSID of connected AP*/
uint8_t channel; /**< channel of connected AP*/
wifi_auth_mode_t authmode;
} system_event_sta_connected_t;
typedef struct {
uint8_t ssid[32]; /**< SSID of disconnected AP */
uint8_t ssid_len; /**< SSID length of disconnected AP */
uint8_t bssid[6]; /**< BSSID of disconnected AP */
uint8_t reason; /**< reason of disconnection */
} system_event_sta_disconnected_t;
typedef struct {
wifi_auth_mode_t old_mode; /**< the old auth mode of AP */
wifi_auth_mode_t new_mode; /**< the new auth mode of AP */
} system_event_sta_authmode_change_t;
typedef struct {
tcpip_adapter_ip_info_t ip_info;
} system_event_sta_got_ip_t;
typedef struct {
uint8_t mac[6]; /**< MAC address of the station connected to ESP32 soft-AP */
uint8_t aid; /**< the aid that ESP32 soft-AP gives to the station connected to */
} system_event_ap_staconnected_t;
typedef struct {
uint8_t mac[6]; /**< MAC address of the station disconnects to ESP32 soft-AP */
uint8_t aid; /**< the aid that ESP32 soft-AP gave to the station disconnects to */
} system_event_ap_stadisconnected_t;
typedef struct {
int rssi; /**< Received probe request signal strength */
uint8_t mac[6]; /**< MAC address of the station which send probe request */
} system_event_ap_probe_req_rx_t;
typedef union {
system_event_sta_connected_t connected; /**< ESP32 station connected to AP */
system_event_sta_disconnected_t disconnected; /**< ESP32 station disconnected to AP */
system_event_sta_scan_done_t scan_done; /**< ESP32 station scan (APs) done */
system_event_sta_authmode_change_t auth_change; /**< the auth mode of AP ESP32 station connected to changed */
system_event_sta_got_ip_t got_ip; /**< ESP32 station got IP */
system_event_ap_staconnected_t sta_connected; /**< a station connected to ESP32 soft-AP */
system_event_ap_stadisconnected_t sta_disconnected; /**< a station disconnected to ESP32 soft-AP */
system_event_ap_probe_req_rx_t ap_probereqrecved; /**< ESP32 soft-AP receive probe request packet */
} system_event_info_t;
typedef struct {
system_event_id_t event_id; /**< even ID */
system_event_info_t event_info; /**< event information */
} system_event_t;
/**
* @brief Application specified event callback function
*
* @param void *ctx : reserved for user
* @param system_event_t *event : event type defined in this file
*
* @return ESP_OK : succeed
* @return others : fail
*/
typedef esp_err_t (*system_event_cb_t)(void *ctx, system_event_t *event);
/**
* @brief Set application specified event callback function
*
* @attention 1. If cb is NULL, means application don't need to handle
* If cb is not NULL, it will be call when an event is received, after the default event callback is completed
*
* @param system_event_cb_t cb : callback
* @param void *ctx : reserved for user
*
* @return system_event_cb_t : old callback
*/
system_event_cb_t esp_event_set_cb(system_event_cb_t cb, void *ctx);
/**
* @brief Send a event to event task
*
* @attention 1. Other task/modules, such as the TCPIP module, can call this API to send an event to event task
*
* @param system_event_t * event : event
*
* @return ESP_OK : succeed
* @return others : fail
*/
esp_err_t esp_event_send(system_event_t *event);
/**
* @brief Get the event handler
*
* @attention : currently this API returns event queue handler, by this event queue,
* users can notice when WiFi has done something like scanning done, connected to AP or disconnected from AP.
*
* @param null
*
* @return void * : event queue pointer
*/
void *esp_event_get_handler(void);
/**
* @brief Init the event module
* Create the event handler and task
*
* @param system_event_cb_t cb : application specified event callback, it can be modified by call esp_event_set_cb
* @param void *ctx : reserved for user
*
* @return ESP_OK : succeed
* @return others : fail
*/
esp_err_t esp_event_init(system_event_cb_t cb, void *ctx);
#ifdef __cplusplus
}
#endif
#endif /* __ESP_EVENT_H__ */