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54 lines
1.5 KiB
C++
54 lines
1.5 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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- Fall back to connect to hidden SSID's which are not reported by WiFi scan
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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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// Don't save WiFi configuration in flash - optional
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WiFi.persistent(false);
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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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