ESP32_Wifi_Soil_moisture_sensor

/*********
 * Based on Rui Santos tutorial, Complete project details at https://randomnerdtutorials.com  
 * Kaman Au, group projcet for DESN37900 Interactive Objects and Environments 2: Physical Computing
*********/

// Import required libraries
#include "WiFi.h"
#include "ESPAsyncWebServer.h"
#include "SPIFFS.h"

// Replace with your network credentials
const char* ssid     = "ssid";
const char* password = "password";

// Set LED GPIO
const int ledPin = 2;
//Declared output26, output27
const int output26 = 26;
const int output27 = 27;
//sensor pin
const int potPin = 34;

// Stores LED state
String ledState;
String output26State = "off";
String output27State = "off";

// Function for reading
String readSoilHumidity(){
  int potValue = analogRead(potPin);
  int percent_value = map(potValue, 4095, 2047, 0, 500);
  return String(percent_value);
};


// Create AsyncWebServer object on port 80
AsyncWebServer server(80);

void setup(){
  // Serial port for debugging purposes
  Serial.begin(115200);
  //Blue LED on ESP32 and LED output for testing
  pinMode(ledPin, OUTPUT);
  pinMode(output26, OUTPUT);
  pinMode(output27, OUTPUT);

  // Initialize SPIFFS
  if(!SPIFFS.begin(true)){
    Serial.println("An Error has occurred while mounting SPIFFS");
    return;
  }

  // Connect to Wi-Fi
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
    Serial.println("Connecting to WiFi..");
  }

  // Print ESP32 Local IP Address
  Serial.println(WiFi.localIP());

  // Route for root / web page

server.on("/jquery-3.4.1.min.js", HTTP_GET, [](AsyncWebServerRequest *request){
  request->send(SPIFFS, "/jquery-3.4.1.min.js","text/javascript");
});

server.on("/highcharts.js", HTTP_GET, [](AsyncWebServerRequest *request){
  request->send(SPIFFS, "/highcharts.js","text/javascript");
});

//Testing for p5
//server.on("/p5.min.js", HTTP_GET, [](AsyncWebServerRequest *request){
//  request->send(SPIFFS, "/p5.min.js","text/javascript");
//});
//server.on("/sketch.js", HTTP_GET, [](AsyncWebServerRequest *request){
//  request->send(SPIFFS, "/sketch.js","text/javascript");
//});
  
server.on("/", HTTP_GET, [](AsyncWebServerRequest *request){
    request->send(SPIFFS, "/index.html","text/html");
  });
  
  // Route to load style.css file
  server.on("/style.css", HTTP_GET, [](AsyncWebServerRequest *request){
    request->send(SPIFFS, "/style.css", "text/css");
  });

   // Route to set All LED to HIGH

  server.on("/on", HTTP_GET, [](AsyncWebServerRequest *request){
    digitalWrite(ledPin, HIGH);   
     digitalWrite(output26, HIGH); 
      output26State = "on";   
      digitalWrite(output27, HIGH); 
       output27State = "on";
       Serial.println("Turning LEDs ON"); 
    request->send(200, "text/plain", "ON");
  });

  // Route to set All LED to LOW
  server.on("/off", HTTP_GET, [](AsyncWebServerRequest *request){
    digitalWrite(ledPin, LOW); 
       digitalWrite(output26, LOW); 
       output26State = "off";
       digitalWrite(output27, LOW); 
       output27State = "off";
    request->send(200, "text/plain", "OFF");   
  });

  // Get reading
server.on("/humidity", HTTP_GET, [](AsyncWebServerRequest *request){
  request->send(200, "text/plain", readSoilHumidity().c_str());
});
 
  // Start server
  server.begin();
}
 
void loop(){

//Testing code
//potValue = analogRead(potPin);
//Serial.println(potValue);
//percentValue = map(potValue, 4095, 2047, 0, 500);
//Serial.print(percentValue);
//Serial.print("%");


}