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	- Project: BMX280 Readings
	- Source Code NOT compiled for: Arduino Uno
	- Source Code created on: 2025-10-12 12:59:23

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/****** SYSTEM REQUIREMENTS *****/
/****** SYSTEM REQUIREMENT 1 *****/
	/* 1) Use D2 with INPUT_PULLUP and EasyButton to emit */
	/* a debounced pressed event to Serial. 2) On press, */
	/* read BMX280 via forcedBMX280 and print */
	/* pressure/temp. 3) Rely only on */
	/* button1_PushButton_PIN_D2; no extra pins/libs */
	/* beyond those listed. */
/****** END SYSTEM REQUIREMENTS *****/


/* START CODE */

/****** DEFINITION OF LIBRARIES *****/
#include <EasyButton.h>
#include <forcedBMX280.h>	// https://github.com/soylentOrange/Forced-BMX280
#include <Wire.h>

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

/***** DEFINITION OF DIGITAL INPUT PINS *****/
const uint8_t button1_PushButton_PIN_D2 = 2; // D2

/****** DEFINITION OF LIBRARIES CLASS INSTANCES*****/
ForcedBMX280 climateSensor = ForcedBMX280();
EasyButton button1 = EasyButton(button1_PushButton_PIN_D2);

void setup(void)
{
	// Initialize serial port for debugging and output
	Serial.begin(115200);
	while (!Serial) {
		; // wait for serial port to connect. Needed for native USB devices
	}

	// Initialize I2C bus
	Wire.begin();

	// Initialize BMX280 sensor in forced mode (no continuous sampling)
	climateSensor.begin();

	// Initialize button with debounced callback on D2 (INPUT_PULLUP by EasyButton)
	button1.begin();
	button1.onPressed(onButtonPressed);
}

void loop(void)
{
	// Update button state to generate debounced events
	button1.update();
}

// Debounced button press handler
void onButtonPressed(void)
{
	Serial.println("Button pressed");
	// Take a forced measurement to update data
	climateSensor.takeForcedMeasurement();

	// Read temperature in hundredths of degrees Celsius
	int32_t temperatureC100 = climateSensor.getTemperatureCelsius(true);
	Serial.print("Temperature: ");
	Serial.print(temperatureC100/100);
	Serial.print(".");
	int32_t frac = temperatureC100 % 100;
	if (frac < 0) frac = -frac;
	if (frac < 10) Serial.print("0");
	Serial.println(frac);
	Serial.println(" C");

	// Read pressure (hPa with two decimals). If not available on the used class, this call
	// will either be ignored by the library or may return a valid value depending on the build.
	uint32_t pressurePa100 = climateSensor.getPressure(true);
	Serial.print("Pressure: ");
	Serial.print(pressurePa100/100);
	Serial.print(".");
	uint32_t pDec = pressurePa100 % 100;
	if (pDec < 10) Serial.print("0");
	Serial.println(pDec);
	Serial.println(" hPa");
	Serial.println("");
}

/* END CODE */