smart-home/garage/garage_esp32/garage_esp32.ino

/* 
 *  Sources:
 *  https://randomnerdtutorials.com/esp32-esp8266-web-server-physical-button/
 * 
 */


#include <WiFi.h>
#include <AsyncTCP.h>
#include <ESPAsyncWebSrv.h>
#include <HTTPClient.h>


const char* ssid     = "LeWe";
const char* password = "5275274365464843";

const int PIN_LED = 2;
const int PIN_GARAGE_BUTTON = 4;
const int PIN_GATE_BUTTON = 5;
const int PIN_GARAGE = 18;
const int PIN_GATE = 19;
const int PIN_DOOR_OPEN = 21;
const int PIN_DOOR_CLOSED = 22;
const int PIN_SENSOR_GATE= 23;


AsyncWebServer server(80);
const char* PARAM_MESSAGE = "message";

WiFiClient webClient;
HTTPClient http;



void notFound(AsyncWebServerRequest *request) {
  request->send(404, "text/plain", "Not found");
}

void pinStatus(AsyncWebServerRequest *request) {
  String status = "PIN_DOOR_OPEN: " + String(digitalRead(PIN_DOOR_OPEN)) + "\n" + "PIN_DOOR_CLOSED: " + String(digitalRead(PIN_DOOR_CLOSED));
  request->send(200, "text/plain", status);
}

void mowerSafety() {
  if (http.begin(webClient, "http://192.168.178.54/json?cmd=status&user=lewe&pass=nFdcX3sMD115WAap")) {
    int httpCode = http.GET();
    
    if (httpCode > 0) {
      if (httpCode == HTTP_CODE_OK) {
        String payload = http.getString();

        // TODO abhängig vom Status Befehl an den Mäher schicken
        Serial.println(payload);
      }
    }
    else {
      Serial.printf("HTTP Error: ", http.errorToString(httpCode).c_str());
    }
    http.end();
  }
  else {
    Serial.println("Could not send HTTP request to mower");
  }
}

void setup() {
  // start serial output
  Serial.begin(115200);
  Serial.println();
  
  btStop(); // turn off bluetooth

  pinMode(PIN_LED, OUTPUT);
  pinMode(PIN_GARAGE_BUTTON, INPUT);
  pinMode(PIN_GATE_BUTTON, INPUT);
  pinMode(PIN_GARAGE, OUTPUT);
  pinMode(PIN_GATE, OUTPUT);
  pinMode(PIN_DOOR_OPEN, INPUT);
  pinMode(PIN_DOOR_CLOSED, INPUT);
  pinMode(PIN_SENSOR_GATE, INPUT);

  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
    Serial.println("Connecting to WiFi...");
  }
  Serial.println(WiFi.localIP());
  WiFi.setAutoReconnect(true);
  WiFi.persistent(true);

  server.on("/", HTTP_GET, [](AsyncWebServerRequest *request){
    request->send_P(200, "text/html", "Hello World!");
  });

  server.on("/garage", HTTP_GET, [] (AsyncWebServerRequest *request) {
    String action;
    if (request->hasParam("action")) {
      action = request->getParam("action")->value();

      if (action.equals("open") and digitalRead(PIN_DOOR_CLOSED) and not digitalRead(PIN_DOOR_OPEN)) {
          request->send(200, "application/json", "{ \"action\": \"open\" }");
      }
      else if (action.equals("close") and digitalRead(PIN_DOOR_OPEN) and not digitalRead(PIN_DOOR_CLOSED)) {
        request->send(200, "application/json", "{ \"action\": \"close\" }");
      }
      else {
        pinStatus(request);
      }
    }
    else {
      if (digitalRead(PIN_DOOR_OPEN) and not digitalRead(PIN_DOOR_CLOSED)) {
        request->send(200, "application/json", "{ \"status\": \"true\" }");
      }
      else {
        request->send(200, "application/json", "{ \"status\": \"false\" }");
      }
    }
  });

  server.on("/gate", HTTP_GET, [] (AsyncWebServerRequest *request) {
    String action;
    if (request->hasParam("action")) {
      action = request->getParam("action")->value();

      if (action.equals("open") and not digitalRead(PIN_SENSOR_GATE)) {
          request->send(200, "application/json", "{ \"action\": \"open\" }");
      }
      else if (action.equals("close") and digitalRead(PIN_SENSOR_GATE)) {
        request->send(200, "application/json", "{ \"action\": \"close\" }");
      }
      else {
        pinStatus(request);
      }
    }
    else {
      if (digitalRead(PIN_SENSOR_GATE)) {
        request->send(200, "application/json", "{ \"status\": \"false\" }");
      }
      else {
        request->send(200, "application/json", "{ \"status\": \"true\" }");
      }
    }
  });

  server.onNotFound(notFound);

  server.begin();
  Serial.println("Setup completed");
}


void trigger(int pinNo) {
  Serial.print("Trigger ");
  Serial.println(pinNo);
  digitalWrite(pinNo, HIGH);
  digitalWrite(PIN_LED, HIGH);
  delay(400);
  digitalWrite(pinNo, LOW);
  digitalWrite(PIN_LED, LOW);
}

unsigned long lastDebounceTime = 0;
unsigned long debounceDelay = 80;
int lastVal = LOW;

void loop() {

  int newVal = digitalRead(PIN_GARAGE_BUTTON);
  if (newVal != lastVal) {
    lastDebounceTime = millis();
    while (((millis() - lastDebounceTime) < debounceDelay) and digitalRead(PIN_GARAGE_BUTTON) != lastVal) {
      delay(1);
    }
    if (digitalRead(PIN_GARAGE_BUTTON) != lastVal) {
      lastVal = newVal;
      if (newVal == HIGH) {
        trigger(PIN_GARAGE);
      }
    }
  }

  newVal = digitalRead(PIN_GATE_BUTTON);
  if (newVal != lastVal) {
    lastDebounceTime = millis();
    while (((millis() - lastDebounceTime) < debounceDelay) and digitalRead(PIN_GATE_BUTTON) != lastVal) {
      delay(1);
    }
    if (digitalRead(PIN_GATE_BUTTON) != lastVal) {
      lastVal = newVal;
      if (newVal == HIGH) {
        trigger(PIN_GATE);
      }
    }
  }
}