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	- Project: Temperature Monitor
	- Source Code NOT compiled for: ESP32 DevKit V1
	- Source Code created on: 2024-09-20 09:58:11

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/****** SYSTEM REQUIREMENTS *****/
/****** SYSTEM REQUIREMENT 1 *****/
	/* afficher la température sur un tft LCD 3.5" ainsi */
	/* qu'un curseur pour générer une alarme température */
/****** END SYSTEM REQUIREMENTS *****/

/****** DEFINITION OF LIBRARIES *****/
#include 	// https://github.com/matmunk/DS18B20
#include   // TFT library for 3.5" LCD
#include        // SPI library for communication with TFT

/****** FUNCTION PROTOTYPES *****/
void setup(void);
void loop(void);

/***** DEFINITION OF DIGITAL INPUT PINS *****/
const uint8_t DS18B20_DQ_PIN = 4;  // Changed the variable name to a valid identifier

/****** DEFINITION OF LIBRARIES CLASS INSTANCES*****/
// Create an instance of the DS18B20 class, passing the digital pin number as a parameter
DS18B20 ds(DS18B20_DQ_PIN);

// Create an instance of the TFT display
TFT_eSPI tft = TFT_eSPI(); // Invoke library

/****** ALARM THRESHOLDS *****/
#define LOW_ALARM 20
#define HIGH_ALARM 25

void setup(void)
{
	// Initialize serial communication for debugging
	Serial.begin(9600);
	
	// Set the pin mode for the DS18B20 data pin
	pinMode(DS18B20_DQ_PIN, INPUT);
	
	// Initialize the TFT display
	tft.init();
	tft.setRotation(1); // Set the rotation of the display
	tft.fillScreen(TFT_BLACK); // Clear the screen with black color
	tft.setTextColor(TFT_WHITE); // Set text color to white
	tft.setTextSize(2); // Set text size

	// Define the address of the DS18B20 sensor (replace with your actual sensor address)
	uint8_t address[] = {40, 250, 31, 218, 4, 0, 0, 52};
	
	// Select the DS18B20 sensor using its address
	if (ds.select(address)) {
		// Set the alarm thresholds for the temperature
		ds.setAlarms(LOW_ALARM, HIGH_ALARM);
	} else {
		Serial.println("Device not found!");
	}
}

void loop(void)
{
	// Define the address of the DS18B20 sensor (should match the address used in setup)
	uint8_t address[] = {40, 250, 31, 218, 4, 0, 0, 52};
	
	// Check if the DS18B20 sensor is selected
	if (ds.select(address)) {
		// Get the current temperature
		float temperature = ds.getTempC();
		
		// Display the temperature on the TFT
		tft.fillRect(0, 0, 240, 40, TFT_BLACK); // Clear previous temperature display
		tft.setCursor(10, 10); // Set cursor position
		tft.print("Temperature: ");
		tft.print(temperature);
		tft.println(" C");
		
		// Check if the temperature alarm has been triggered
		if (ds.hasAlarm()) {
			// Print a warning message with the current temperature
			Serial.print("Warning! Temperature is ");
			Serial.print(temperature);
			Serial.println(" C");
			
			// Display alarm message on the TFT
			tft.setTextColor(TFT_RED); // Set text color to red for alarm
			tft.setCursor(10, 30); // Set cursor position for alarm message
			tft.print("ALARM! Temp: ");
			tft.print(temperature);
			tft.println(" C");
		}
	} else {
		Serial.println("Device not found!");
	}

	// Wait for 10 seconds before the next loop iteration
	delay(10000);
}

/* END CODE */