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https://github.com/esp8266/Arduino.git
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fceb390a1a
Fixed critical issues WiFiMulti library: - WiFi scan timeout implemented to prevent endless connect loop - Fallback implemented on WiFi connect failure to prevent endless loop - Fast WiFi connection at startup - Improved debug prints - Doxygen added - Code maturing - Example update Make functions not related to ESP8266WiFiMulti class static Revert static functions startScan and printWiFiScan() Use PolledTimeout.h to protect while loops Move static functions beginning of the file Add connect timeout to example
50 lines
1.3 KiB
C++
50 lines
1.3 KiB
C++
/*
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This sketch shows how to use multiple WiFi networks.
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In this example, ESP8266 works in AP mode.
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It demonstrates:
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- Fast connect to previous WiFi network at startup
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- Registering multiple networks (at least 1)
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- Connect to WiFi with strongest signal (RSSI)
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- Fall back to connect to next WiFi when a connection failed or lost
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To enable debugging output, select in the Arduino iDE:
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- Tools | Debug Port: Serial
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- Tools | Debug Level: WiFi
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*/
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#include <ESP8266WiFiMulti.h>
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ESP8266WiFiMulti wifiMulti;
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// WiFi connect timeout per AP. Increase when connecting takes longer.
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const uint32_t connectTimeoutMs = 5000;
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void setup() {
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Serial.begin(115200);
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Serial.println("\nESP8266 Multi WiFi example");
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// Set WiFi to station mode
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WiFi.mode(WIFI_STA);
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// Register multi WiFi networks
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wifiMulti.addAP("ssid_from_AP_1", "your_password_for_AP_1");
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wifiMulti.addAP("ssid_from_AP_2", "your_password_for_AP_2");
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wifiMulti.addAP("ssid_from_AP_3", "your_password_for_AP_3");
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// More is possible
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}
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void loop() {
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// Maintain WiFi connection
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if (wifiMulti.run(connectTimeoutMs) == WL_CONNECTED) {
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Serial.print("WiFi connected: ");
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Serial.print(WiFi.SSID());
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Serial.print(" ");
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Serial.println(WiFi.localIP());
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} else {
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Serial.println("WiFi not connected!");
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}
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delay(1000);
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}
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