#define BLYNK_TEMPLATE_ID      "TMPL68gBem6_N"
#define BLYNK_TEMPLATE_NAME    "System1"
#define BLYNK_AUTH_TOKEN       "JtTCjy6oPTBDxxQHCt8sxVlYeDRUE1nz"

#define BLYNK_PRINT Serial  // used by Blynk to access Serial Monitor for troubleshooting

#define DrySoil 300   
#define WetSoil 500
// Sensor pins
#define sensorPower 12
#define sensorPin 34 // GPIO 32 on ESP32-WROOM-32

#include <WiFi.h>
#include <WiFiClient.h>
#include <BlynkSimpleEsp32.h>

// Your WiFi credentials.
// Set password to "" for open networks.
char ssid[] = "YourNetworkName";
char pass[] = "YourPassword";

// Declaring a global variable for the sensor data
int sensorVal;

BlynkTimer timer; // Creating a timer object

void setup() {
  Serial.begin(115200);
  Blynk.begin(BLYNK_AUTH_TOKEN, ssid, pass);

  timer.setInterval(1000L, myTimerEvent); // Starting a timer
  
  pinMode(sensorPower, OUTPUT);

  // Initially keep the sensor OFF
  digitalWrite(sensorPower, LOW);
}

void myTimerEvent() {
  Blynk.virtualWrite(V0, sensorVal);
}

void loop() {
  Blynk.run(); 
  timer.run();

  // Read sensor value
  sensorVal = readSensor();

  Serial.print("Analog Output: ");
  Serial.println(sensorVal);

  // Determine status of our soil
  if (sensorVal < DrySoil) {
    Serial.println("Dry Soil. Time for watering!");
  } else if (sensorVal >= DrySoil && sensorVal < WetSoil) {
    Serial.println("Perfect. Well done!");
  } else {
    Serial.println("Wet Soil. Be careful!");
  }
  
  delay(1000);
}

// This function returns the analog soil moisture measurement
int readSensor() {
  digitalWrite(sensorPower, HIGH);  // Turn the sensor ON
  delay(10);              // Allow power to settle
  int val = digitalRead(sensorPin);  // Read the digital value from the sensor
  digitalWrite(sensorPower, LOW);   // Turn the sensor OFF
  return val;             // Return the digital moisture value
}