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May 21, 2019 15:09
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Save dhavlik/fffec5e7ffb2a6bf1259ed14b4cef0d0 to your computer and use it in GitHub Desktop.
short example for esp8266 - run in ap mode and reply with a static page to every request with a simple dns trick - this leads to a captive portal being displayed on most clients directly after connecting to the ap.
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| #include <ESP8266WiFi.h> | |
| #include <DNSServer.h> | |
| #include <ESP8266WebServer.h> | |
| const byte DNS_PORT = 53; | |
| IPAddress apIP(192, 168, 1, 1); | |
| DNSServer dnsServer; | |
| ESP8266WebServer webServer(80); | |
| String responseHTML = "<!DOCTYPE html><html><head><meta charset='utf-8'><title>_internet_of_weihnachten</title><style type='text/css'>body {background-color: #000;color: #00ff00;font-size: 2rem;font-family: Helvetica, sans-serif;padding:0;margin:0;padding-left:15px;padding-right: 15px;}a, a:visited, a:active {text-decoration: none;display: block;font-size: 3.5rem;font-family: Helvetica, sans-serif;font-weight: 200;text-align: center;background-color: #000;color: #00ff00;border: 1px solid #00ff00;padding-top:15px;padding-bottom:15px;margin: 15px;}a:active {background-color: #00ff00;color: #000;}</style></head><body><br/>_internet_of_weihnachten v.1.16<br/><a href='?1=letitsnowden'>let it snowden</a><a href='?2=stillenacht'>stille nacht heimlich überwacht</a><a href='?3=byteentsprungen'>es ist ein byte entsprungen</a><a href='?4=klingwhatsapp'>kling, whatsapp, klingelingeling</a></body></html>"; | |
| void bling(int times, int p, int out1, int out2, int out3) { | |
| digitalWrite(12, out1); | |
| digitalWrite(13, out2); | |
| digitalWrite(14, out3); | |
| //for (int x=0; x<times; x++) { | |
| // digitalWrite(LED_BUILTIN, LOW); // Turn the LED on (Note that LOW is the voltage level | |
| // delay(30); // Wait for a second | |
| // digitalWrite(LED_BUILTIN, HIGH); // Turn the LED off by making the voltage HIGH | |
| // delay(p); | |
| //} | |
| } | |
| void setup() { | |
| Serial.begin(115200); | |
| pinMode(LED_BUILTIN, OUTPUT); // Initialize the LED_BUILTIN pin as an output | |
| pinMode(12, OUTPUT); | |
| pinMode(13, OUTPUT); | |
| pinMode(14, OUTPUT); | |
| digitalWrite(LED_BUILTIN, HIGH); | |
| WiFi.mode(WIFI_AP); | |
| WiFi.softAPConfig(apIP, apIP, IPAddress(255, 255, 255, 0)); | |
| WiFi.softAP("_i.o.weihnachten"); | |
| // if DNSServer is started with "*" for domain name, it will reply with | |
| // provided IP to all DNS request | |
| dnsServer.start(DNS_PORT, "*", apIP); | |
| // replay to all requests with same HTML | |
| webServer.onNotFound([]() { | |
| if (webServer.args() > 0) { | |
| String param = webServer.arg(0); | |
| Serial.println("received arg"); | |
| Serial.println(param); | |
| if (param == "letitsnowden") { | |
| bling(1,340, HIGH, LOW, LOW); | |
| } else if (param == "stillenacht") { | |
| bling(2,340, LOW, HIGH, LOW); | |
| } else if (param == "byteentsprungen") { | |
| bling(3,340, LOW, LOW, HIGH); | |
| } else if (param == "klingwhatsapp") { | |
| bling(4,340, LOW, LOW, LOW); | |
| } else { | |
| bling(5,340, LOW, HIGH, HIGH); | |
| } | |
| } | |
| webServer.send(200, "text/html", responseHTML); | |
| }); | |
| webServer.begin(); | |
| } | |
| void loop() { | |
| dnsServer.processNextRequest(); | |
| webServer.handleClient(); | |
| } |
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