XGZP6847

/*
The XGZP6847 is a pressure sensor that measures absolute pressure. Here's an example code in Arduino that reads the pressure from the sensor:

Note: This code assumes that the XGZP6847 pressure sensor is connected to the I2C interface of the Arduino board. The I2C address of the sensor is set to 0x28, but you should verify the address using a scanner tool if you're unsure. Also, note that the sensor requires a warm-up time of at least 1 second after power-on before providing accurate readings, so be sure to wait for this period before reading from the sensor. Finally, note that the pressure readings are in Pascals (Pa), which is the SI unit for pressure.
*/

#include <Wire.h>

const byte ADDRESS = 0x28; // the I2C address of the sensor
int pressure;  // the pressure reading from the sensor

void setup() {
  Serial.begin(9600);
  Wire.begin(); // start the I2C interface
}

void loop() {
  Wire.beginTransmission(ADDRESS);
  Wire.write(0x00); // select the pressure register
  Wire.endTransmission();

  Wire.requestFrom(ADDRESS, 3); // request 3 bytes of data
  if (Wire.available() == 3) {
    byte msb = Wire.read();
    byte lsb = Wire.read();
    byte xlsb = Wire.read();
    pressure = ((msb << 16) | (lsb << 8) | xlsb) / 256; // combine the bytes and convert to pressure
    Serial.print("Pressure: ");
    Serial.print(pressure);
    Serial.println(" Pa");
  }

  // delay before reading from the sensor again
  delay(1000);
}