143 lines
3.9 KiB
Arduino
143 lines
3.9 KiB
Arduino
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/**
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* IotWebConf05Callbacks.ino -- IotWebConf is an ESP8266/ESP32
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* non blocking WiFi/AP web configuration library for Arduino.
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* https://github.com/prampec/IotWebConf
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*
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* Copyright (C) 2018 Balazs Kelemen <prampec+arduino@gmail.com>
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*
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* This software may be modified and distributed under the terms
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* of the MIT license. See the LICENSE file for details.
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*/
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/**
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* Example: Callbacks
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* Description:
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* This example shows, what callbacks IotWebConf provides.
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* (See previous examples for more details!)
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*
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* Hardware setup for this example:
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* - An LED is attached to LED_BUILTIN pin with setup On=LOW.
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* - [Optional] A push button is attached to pin D2, the other leg of the
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* button should be attached to GND.
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*/
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#include <IotWebConf.h>
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// -- Initial name of the Thing. Used e.g. as SSID of the own Access Point.
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const char thingName[] = "testThing";
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// -- Initial password to connect to the Thing, when it creates an own Access Point.
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const char wifiInitialApPassword[] = "smrtTHNG8266";
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#define STRING_LEN 128
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// -- Configuration specific key. The value should be modified if config structure was changed.
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#define CONFIG_VERSION "dem3"
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// -- When CONFIG_PIN is pulled to ground on startup, the Thing will use the initial
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// password to buld an AP. (E.g. in case of lost password)
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#define CONFIG_PIN D2
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// -- Status indicator pin.
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// First it will light up (kept LOW), on Wifi connection it will blink,
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// when connected to the Wifi it will turn off (kept HIGH).
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#define STATUS_PIN LED_BUILTIN
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// -- Callback method declarations.
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void wifiConnected();
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void configSaved();
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boolean formValidator();
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void messageReceived(String &topic, String &payload);
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DNSServer dnsServer;
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WebServer server(80);
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HTTPUpdateServer httpUpdater;
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char stringParamValue[STRING_LEN];
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IotWebConf iotWebConf(thingName, &dnsServer, &server, wifiInitialApPassword, CONFIG_VERSION);
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IotWebConfParameter stringParam = IotWebConfParameter("String param", "stringParam", stringParamValue, STRING_LEN);
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void setup()
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{
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Serial.begin(115200);
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Serial.println();
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Serial.println("Starting up...");
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iotWebConf.setStatusPin(STATUS_PIN);
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iotWebConf.setConfigPin(CONFIG_PIN);
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iotWebConf.addParameter(&stringParam);
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iotWebConf.setConfigSavedCallback(&configSaved);
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iotWebConf.setFormValidator(&formValidator);
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iotWebConf.setWifiConnectionCallback(&wifiConnected);
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// -- Initializing the configuration.
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boolean validConfig = iotWebConf.init();
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if (!validConfig)
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{
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stringParamValue[0] = '\0';
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}
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// -- Set up required URL handlers on the web server.
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server.on("/", handleRoot);
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server.on("/config", []{ iotWebConf.handleConfig(); });
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server.onNotFound([](){ iotWebConf.handleNotFound(); });
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Serial.println("Ready.");
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}
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void loop()
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{
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// -- doLoop should be called as frequently as possible.
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iotWebConf.doLoop();
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}
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/**
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* Handle web requests to "/" path.
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*/
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void handleRoot()
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{
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// -- Let IotWebConf test and handle captive portal requests.
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if (iotWebConf.handleCaptivePortal())
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{
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// -- Captive portal request were already served.
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return;
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}
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String s = "<!DOCTYPE html><html lang=\"en\"><head><meta name=\"viewport\" content=\"width=device-width, initial-scale=1, user-scalable=no\"/>";
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s += "<title>IotWebConf 05 Callbacks</title></head><body>Hello world!";
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s += "<ul>";
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s += "<li>String param value: ";
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s += stringParamValue;
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s += "</ul>";
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s += "Go to <a href='config'>configure page</a> to change values.";
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s += "</body></html>\n";
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server.send(200, "text/html", s);
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}
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void wifiConnected()
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{
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Serial.println("WiFi was connected.");
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}
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void configSaved()
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{
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Serial.println("Configuration was updated.");
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}
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boolean formValidator()
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{
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Serial.println("Validating form.");
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boolean valid = true;
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int l = server.arg(stringParam.getId()).length();
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if (l < 3)
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{
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stringParam.errorMessage = "Please provide at least 3 characters for this test!";
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valid = false;
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}
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return valid;
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}
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