├── README.md
└── SocketIo-Example.ino


/README.md:
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 1 | # simple-socket-io-example-esp8266
 2 | ESP8266 Arduino code for a simple socket.io client example
 3 | 
 4 | Goes along with this:
 5 | https://github.com/robojay/simple-socket-io-example
 6 | 
 7 | And requires this:
 8 | https://github.com/robojay/Socket.io-v1.x-Library
 9 | 
10 | Used in this presentation:
11 | https://www.dropbox.com/s/8wn100sbj7jpozi/NRB-socket-io.pdf?dl=0
12 | 


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/SocketIo-Example.ino:
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  1 | #include <SocketIOClient.h>
  2 | 
  3 | #define LedPin 2
  4 | #define ButtonPin 0
  5 | 
  6 | #define SOFTAP_MODE
  7 | 
  8 | #ifdef SOFTAP_MODE
  9 | const char* password = "myMinion";
 10 | #else
 11 | const char* ssid = "SkyNet";
 12 | const char* password = "myMaster";
 13 | #endif
 14 | 
 15 | const char HexLookup[17] = "0123456789ABCDEF";
 16 | 
 17 | String host = "192.168.4.2";
 18 | int port = 3000;
 19 | bool clicked = false;
 20 | 
 21 | SocketIOClient socket;
 22 | 
 23 | void setupNetwork() {
 24 | 
 25 |   #ifdef SOFTAP_MODE
 26 |     WiFi.disconnect();
 27 |     byte mac[6];
 28 |     WiFi.macAddress(mac);
 29 |     char ssid[14] = "Minion-000000";
 30 |     ssid[7] = HexLookup[(mac[3] & 0xf0) >> 4];
 31 |     ssid[8] = HexLookup[(mac[3] & 0x0f)];
 32 |     ssid[9] = HexLookup[(mac[4] & 0xf0) >> 4];
 33 |     ssid[10] = HexLookup[(mac[4] & 0x0f)];
 34 |     ssid[11] = HexLookup[(mac[5] & 0xf0) >> 4];
 35 |     ssid[12] = HexLookup[(mac[5] & 0x0f)];
 36 |     ssid[13] = 0;
 37 |     WiFi.softAP(ssid, password);
 38 |   #else
 39 |     WiFi.begin(ssid, password);
 40 |     uint8_t i = 0;
 41 |     while (WiFi.status() != WL_CONNECTED && i++ < 20) delay(500);
 42 |     if(i == 21){
 43 |       while(1) delay(500);
 44 |     }
 45 |   #endif
 46 | 
 47 | }
 48 | 
 49 | void click() {
 50 |   clicked = true;
 51 | }
 52 | 
 53 | void light(String state) {
 54 |   Serial.println("[light] " + state);
 55 |   if (state == "\"state\":true") {
 56 |     Serial.println("[light] ON");
 57 |     digitalWrite(LedPin, HIGH);
 58 |   }
 59 |   else {
 60 |     Serial.println("[light] off");
 61 |     digitalWrite(LedPin, LOW);
 62 |   }
 63 | }
 64 | 
 65 | //
 66 | // This code runs only once
 67 | //
 68 | void setup() {
 69 | 
 70 |   // set up our pins
 71 |   pinMode(LedPin, OUTPUT);
 72 |   pinMode(ButtonPin, INPUT);
 73 | 
 74 |   digitalWrite(LedPin, LOW);
 75 | 
 76 |   Serial.begin(115200);
 77 | 
 78 |   setupNetwork();
 79 | 
 80 |   attachInterrupt(digitalPinToInterrupt(ButtonPin), click, FALLING);    
 81 | 
 82 |   socket.on("light", light);
 83 | 
 84 |   socket.connect(host, port);
 85 | }
 86 | 
 87 | void clickCheck() {
 88 |   if (clicked) {
 89 |     Serial.println("[click]");
 90 |     socket.emit("toggle", "{\"state\":true}");
 91 |     clicked = false;
 92 |   }  
 93 | }
 94 | 
 95 | //
 96 | // This code runs over and over again
 97 | //
 98 | void loop() {
 99 |   socket.monitor();
100 |   clickCheck();
101 | }
102 | 
103 | 
104 | 


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