#include <SoftwareSerial.h>
#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>

#define OLED_RESET -1       // Reset pin # (or -1 if sharing Arduino reset pin)
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);


//const byte code[]= {0x01, 0x03, 0x00, 0x1e, 0x00, 0x03, 0x65, 0xCD};
const byte nitro[] = {0x01, 0x03, 0x00, 0x1e, 0x00, 0x01, 0xe4, 0x0c};
const byte phos[] = {0x01, 0x03, 0x00, 0x1f, 0x00, 0x01, 0xb5, 0xcc};
const byte pota[] = {0x01, 0x03, 0x00, 0x20, 0x00, 0x01, 0x85, 0xc0};

byte values[11];
SoftwareSerial mod(2, 3);


#define BLYNK_TEMPLATE_ID "TMPL37IJF_aXY"
#define BLYNK_TEMPLATE_NAME "pro"
#define BLYNK_AUTH_TOKEN "ouLl5TrL10cmysAKQlclzzG69EHa48Lc"

#define BLYNK_PRINT Serial

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

#define DHT_PIN 18          // Pin connected to the DHT sensor
#define DHT_TYPE DHT22      // Type of DHT sensor (DHT11, DHT21, DHT22)

char auth[] = "ouLl5TrL10cmysAKQlclzzG69EHa48Lc";  // Your Blynk authentication token
char ssid[] = "Wokwi-GUEST";
char pass[] = "";

DHT dht(DHT_PIN, DHT_TYPE);

void setup() {
  Serial.begin(9600);
  Blynk.begin(auth, ssid, pass);
  dht.begin();
}

void loop() {
  byte val1, val2, val3;
  val1 = random(0, 350); // Generate random value for nitrogen (0-255)
  delay(250);
  val2 = random(0, 350); // Generate random value for phosphorous (0-255)
  delay(250);
  val3 = random(0, 330); // Generate random value for potassium (0-255)
  delay(250);

  Serial.print("Nitrogen: ");
  Serial.print(val1);
  Serial.println(" mg/kg");
  Serial.print("Phosphorous: ");
  Serial.print(val2);
  Serial.println(" mg/kg");
  Serial.print("Potassium: ");
  Serial.print(val3);
  Serial.println(" mg/kg");
  delay(2000);
  Blynk.virtualWrite(V3, val1);
  Blynk.virtualWrite(V4, val2);
  Blynk.virtualWrite(V5, val3);
}