#define BLYNK_TEMPLATE_ID "TMPL6uDV5rQPS"
#define BLYNK_TEMPLATE_NAME "MUSCLE STRAIN DETECTOR"
#define BLYNK_AUTH_TOKEN "wlyocZLhCWg9i4qZtJrnxtICnqE9K77-"

#define BLYNK_PRINT Serial

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

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

const int potPin = A0;    // Pin connected to the potentiometer
const int buzzerPin = 12; // Pin connected to the buzzer

int threshold = 30 ;       // Example threshold for muscle strain percentage

#define VIRTUAL_PIN_STRAIN_LEVEL V0

BlynkTimer timer;

void sendDataToBlynk() {
   // Read the analog value from the potentiometer
  int sensorValue = analogRead(potPin);

  // Map the analog value (0-4095 on ESP32) to a meaningful strain range (e.g., 0-100%)
  int strainPercent = map(sensorValue, 0, 4095, 0, 100);

  Blynk.virtualWrite(VIRTUAL_PIN_STRAIN_LEVEL, strainPercent );

  // Print the strain percentage
  Serial.print("Muscle Strain: ");
  Serial.print(strainPercent);
  Serial.println("%");

  // Check if strain exceeds threshold
  if (strainPercent > threshold) {
    tone(buzzerPin,100);
    delay(500);
    noTone(buzzerPin);
    delay(500);
  }
}

void setup() {
  Serial.begin(9600);
  pinMode(buzzerPin, OUTPUT);

  WiFi.mode(WIFI_STA);
  WiFi.begin("Wokwi-GUEST", "");

  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
    Serial.println("Connecting to WiFi...");
  }
  Serial.println("Connected to WiFi");
   Blynk.begin(BLYNK_AUTH_TOKEN, "Wokwi-GUEST", "");

  // Setup timer to send data to Blynk every 2 seconds
  timer.setInterval(2000L, sendDataToBlynk);
}

void loop() {
  // Read the analog value from the potentiometer
  int sensorValue = analogRead(potPin);

  // Map the analog value (0-4095 on ESP32) to a meaningful strain range (e.g., 0-100%)
  int strainPercent = map(sensorValue, 0, 4095, 0, 100);

  // Print the strain percentage
  Serial.print("Muscle Strain: ");
  Serial.print(strainPercent);
  Serial.println("%");

  // Check if strain exceeds threshold
  if (strainPercent > threshold) {
    tone(buzzerPin,100);
    delay(500);
    noTone(buzzerPin);
    delay(500);
  }

  Blynk.run();
  timer.run();

  delay(500);  // Delay for stability
}