brainfart.ino

#include <ESP8266WiFi.h>
#include <ESP8266WebServer.h>

const char* ssid = "SSID";
const char* password = "PW";

const int BUTTON_PIN = 0;
const int FART_PIN = 14;
byte mac[6];

ESP8266WebServer server(80);
static unsigned long last_interrupt_time = 0;

ICACHE_RAM_ATTR void buttonPress() {
  unsigned long interrupt_time = millis();
  if (interrupt_time - last_interrupt_time > 100) {
    fart();
  }
  last_interrupt_time = interrupt_time;
}


// Delay safe for interrupt
void InterruptDelay(int milli)
{
  int Milliseconds = millis() + 50;
  while (Milliseconds > millis());
}

void fart() {
  digitalWrite(FART_PIN, HIGH);
  InterruptDelay(60);
  digitalWrite(FART_PIN, LOW);
  InterruptDelay(60);
  digitalWrite(FART_PIN, HIGH);
  
}

void setupPins() {
  pinMode(FART_PIN, OUTPUT);
  pinMode(BUTTON_PIN, INPUT_PULLUP);
  attachInterrupt(digitalPinToInterrupt(BUTTON_PIN), buttonPress, RISING);
}

void initWLAN() {

  Serial.println();
  Serial.print("Connecting to ");
  Serial.println(ssid);

  // Change MAC
  byte *mac = (byte*)malloc(6);
  WiFi.macAddress(mac);
  mac[0] = 0x20;
  mac[1] = 0x11;
  mac[2] = 0xCA;
  mac[3] = 0xCA;
  mac[4] = 0x24;
  mac[5] = 0x24;
  wifi_set_macaddr(STATION_IF, mac);

  free(mac);

  WiFi.mode(WIFI_STA);
  WiFi.hostname("brainfarter");


  WiFi.begin(ssid, password);

  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }

  Serial.println("");
  Serial.println("WiFi connected");

  Serial.print("IP address: ");
  Serial.println(WiFi.localIP());

  printMac();

}


void printMac() {
  Serial.print("MAC: " + getMac());
}

String getMac() {
  WiFi.macAddress(mac);
  return String(mac[0], HEX) +
         ':' +
         String(mac[1], HEX) +
         ':' +
         String(mac[2], HEX) +
         ':' +
         String(mac[3], HEX) +
         ':' +
         String(mac[4], HEX) +
         ':' +
         String(mac[5], HEX);
}

void handleNotFound() {
  server.send(404, "text/plain", "Not found");
}


void setupServer() {

  server.on("/fart", []() {
    fart();
    server.send(200, "text/plain", "Fart");
  });

  server.on("/mac", []() {
    server.send(200, "text/plain",   getMac());
  });

  server.onNotFound(handleNotFound);

  server.begin();
  Serial.println("HTTP server started");
}

void setup() {
  Serial.begin(115200);
  initWLAN();
  setupPins();
  setupServer();
}


void loop() {
  server.handleClient();
}