BMX280 Readings rev_01

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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 */