60 lines
2.1 KiB
C++
60 lines
2.1 KiB
C++
#pragma once
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#include "io/io.h"
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#include "esp_wifi.h"
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#include "freertos/event_groups.h"
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#define WIFI_STARTED_BIT (1 << 0)
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#define WIFI_CONNECTED_BIT (1 << 1)
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class WifiHandler {
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public:
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WifiHandler(
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// this handler is used to store/retrieve WiFi credentials
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// should have a unique namespace for WiFi credentials
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// it will be owned by WifiHandler and deleted in its destructor
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std::unique_ptr<KVStorageHandler> kvs
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);
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~WifiHandler();
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esp_err_t init();
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esp_err_t connect(const std::string& ssid, const std::string& password);
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esp_err_t connect(const std::string& ssid); // connect using stored password
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esp_err_t reconnect(); // reconnect to current SSID
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void disconnect();
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EventBits_t wait_for_connection(TickType_t ticks_to_wait);
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// returns list of available networks, caller is responsible for freeing the returned memory
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// returns nullptr if scan failed
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esp_err_t scan_networks(
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wifi_ap_record_t*& ap_records,
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uint16_t& ap_count
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);
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static void wifi_event_handler(void* arg, esp_event_base_t event_base, int32_t event_id, void* event_data);
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private:
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// prevent copying
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WifiHandler(const WifiHandler&) = delete;
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WifiHandler& operator=(const WifiHandler&) = delete;
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// prevent moving
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WifiHandler(WifiHandler&& other) = delete;
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WifiHandler& operator=(WifiHandler&& other) = delete;
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void store_wifi_credentials(const std::string& ssid, const std::string& password);
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void get_wifi_credentials(std::string& out_ssid, std::string& out_password);
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bool initialized = false;
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std::unique_ptr<KVStorageHandler> kvs = nullptr;
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EventGroupHandle_t s_wifi_event_group = 0;
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SemaphoreHandle_t scan_mutex = nullptr;
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SemaphoreHandle_t connection_mutex = nullptr;
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SemaphoreHandle_t credential_mutex = nullptr;
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// current connected / preferred SSID
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std::string current_ssid;
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// current password (temporarily stored for successful connection event)
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std::string current_password;
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// prevent auto-reconnect on expected disconnection, e.g. when user calls disconnect()
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// should be reset to false after connect()
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bool expect_disconnected = false;
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};
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