#define BLYNK_TEMPLATE_ID "TMPL3qVryWWv7"
#define BLYNK_TEMPLATE_NAME "soil nutrtion"
#define BLYNK_AUTH_TOKEN "87eJcpB2FP3Tx0tEoQQlGxCAlmi2lZs-"

#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#include <WiFi.h>
#include <BlynkSimpleEsp32.h>

#define SOIL_MOISTURE_PIN 32
#define TEMPERATURE_PIN 34
#define HUMIDITY_PIN 35
#define NITROGEN_PIN 33
#define PHOSPHORUS_PIN 36
#define POTASSIUM_PIN 39
#define WATER_PUMP_LED 12
#define BUZZER_LED 13

LiquidCrystal_I2C LCD(0x27, 16, 2);

const int moistThreshold = 60;

char auth[] = BLYNK_AUTH_TOKEN;
char ssid[] = "Wokwi-GUEST";  // Replace with your WiFi SSID
char pass[] = "";  // Replace with your WiFi Password

void setup() {
  Serial.begin(115200);
  pinMode(WATER_PUMP_LED, OUTPUT);
  pinMode(BUZZER_LED, OUTPUT);
  LCD.init();
  LCD.backlight();
  
  // Connect to Wi-Fi and Blynk
  Blynk.begin(auth, ssid, pass);
}

void loop() {
  Blynk.run();
  
  int soilMoistureValue = analogRead(SOIL_MOISTURE_PIN);
  int temperatureValue = analogRead(TEMPERATURE_PIN);
  int nitrogenValue = analogRead(NITROGEN_PIN);
  int phosphorusValue = analogRead(PHOSPHORUS_PIN);
  int potassiumValue = analogRead(POTASSIUM_PIN);
  
  float soilMoisture = map(soilMoistureValue, 0, 4095, 0, 100);  // Simulated soil moisture
  float temperature = map(temperatureValue, 0, 4095, 30, 50);   // Simulated temperature
  float nitrogen = map(nitrogenValue, 0, 4095, 0, 100);          // Simulated nitrogen
  float phosphorus = map(phosphorusValue, 0, 4095, 0, 100);      // Simulated phosphorus
  float potassium = map(potassiumValue, 0, 4095, 0, 100);        // Simulated potassium

  // Display values on LCD
  LCD.clear();
  LCD.setCursor(0, 0);
  LCD.print("Moist: ");
  LCD.print(soilMoisture);
  LCD.print("%");
  
  LCD.setCursor(0, 1);
  LCD.print("Temp: ");
  LCD.print(temperature);
  LCD.print("C");
  
  delay(1000);  // Display for 2 seconds
   
  LCD.setCursor(0, 1);
  LCD.print("N: ");
  LCD.print(nitrogen);
  LCD.print("%");
  
  delay(1000);  // Display for 2 seconds
  
  LCD.clear();
  LCD.setCursor(0, 0);
  LCD.print("P: ");
  LCD.print(phosphorus);
  LCD.print("%");
  
  LCD.setCursor(0, 1);
  LCD.print("K: ");
  LCD.print(potassium);
  LCD.print("%");
  
  delay(1000);  // Display for 2 seconds
  
  // Send data to Blynk
  Blynk.virtualWrite(V1, soilMoisture);
  Blynk.virtualWrite(V0, temperature);
  Blynk.virtualWrite(V2, nitrogen);
  Blynk.virtualWrite(V3, phosphorus);
  Blynk.virtualWrite(V4, potassium);
  
  // Control water pump and buzzer
  if (soilMoisture < moistThreshold) {
    digitalWrite(WATER_PUMP_LED, HIGH);
    digitalWrite(BUZZER_LED, HIGH);
  } else {
    digitalWrite(WATER_PUMP_LED, LOW);
    digitalWrite(BUZZER_LED, LOW);
  }
  
  delay(1000); // Update every second
}