#define BLYNK_TEMPLATE_ID "TMPL3M1ryAygj"
#define BLYNK_TEMPLATE_NAME "EV Parameters Monitoring"

#include <WiFi.h>
#include <BlynkSimpleEsp32.h>
#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#include <OneWire.h>
#include <DallasTemperature.h>

char auth[] = "V1rmG5iCxIl2PsAD3FJsfa6SI5vPrPh7";

char ssid[] = "Wokwi-GUEST";
char pass[] = "";


const int speedPin = 34; 
const int torquePin = 35; 
const int batteryPin = 32; 


#define ONE_WIRE_BUS 14 
OneWire oneWire(ONE_WIRE_BUS);
DallasTemperature sensors(&oneWire);


#define SCREEN_WIDTH 128
#define SCREEN_HEIGHT 64

Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, -1);

const float totalBatteryCapacityKWh = 5.0; 
const float chargingPower = 0.5; 

float mapFloat(float x, float in_min, float in_max, float out_min, float out_max) {
  return (x - in_min) * (out_max - out_min) / (in_max - in_min) + out_min;
}


float estimateCapacity(float voltage) {
  return mapFloat(voltage, 2.5, 5, 0, 100);
}

float remainingHoursToCharge(float capacityPercentage) {
  float remainingCapacityKWh = totalBatteryCapacityKWh * (1 - (capacityPercentage / 100.0));
  return remainingCapacityKWh / chargingPower;
}


void setup() {

  Serial.begin(9600);
  sensors.begin();


  if (!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) {
    Serial.println(F("SSD1306 allocation failed"));
    for (;;);
  }
  display.display();
  delay(2000);
  display.clearDisplay();


  WiFi.begin(ssid, pass);
  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
    Serial.println("Connecting to WiFi...");
  }
  Serial.println("Connected to WiFi");


  Blynk.begin(auth, ssid, pass);
}

void loop() {

  int speedValue = analogRead(speedPin);
  int torqueValue = analogRead(torquePin);
  int sensorValue = analogRead(batteryPin);
  sensors.requestTemperatures();


  float voltage = sensorValue * (5.0 / 4095.0);
  float speed = speedValue * (100.0 / 4095.0); 
  float torque = torqueValue * (10.0 / 4095.0); 
  float capacity = estimateCapacity(voltage);
  float temperatureC = sensors.getTempCByIndex(0);
  float remainingHours = remainingHoursToCharge(capacity);


  display.clearDisplay();
  display.setTextSize(1);
  display.setTextColor(SSD1306_WHITE);
  display.setCursor(0, 0);
  display.println("Motor Speed: ");
  display.print(speed);
  display.println(" %");
  display.println("Motor Torque: ");
  display.print(torque);
  display.println(" Nm");
  display.println("Capacity: ");
  display.print(capacity);
  display.println(" %");
  display.println("Temperature: ");
  display.print(temperatureC);
  display.println(" °C");
  display.println("Remaining Hours: ");
  display.print(remainingHours);
  display.println(" h");
  display.display();


  Serial.print("Capacity: ");
  Serial.print(capacity);
  Serial.println(" %");
  Serial.print("Speed: ");
  Serial.print(speed);
  Serial.println(" %");
  Serial.print("Torque: ");
  Serial.print(torque);
  Serial.println(" Nm");
  Serial.print("Temperature: ");
  Serial.print(temperatureC);
  Serial.println(" °C");
  Serial.print("Remaining Hours: ");
  Serial.print(remainingHours);
  Serial.println(" h");


  
  Blynk.virtualWrite(V0, remainingHours);
  Blynk.virtualWrite(V1, capacity);
  Blynk.virtualWrite(V2, speed);
  Blynk.virtualWrite(V3, torque);
  Blynk.virtualWrite(V4, temperatureC);
 


  Blynk.run();

  delay(1000);
}