BMP280.kt

 fun readPressure(): Double {
    val temperature = readTemperature(asFinite = true)
    val msb = device.read(REGISTER_MSB_PRESSURE, 1U).toInt()
    val lsb = device.read(REGISTER_LSB_PRESSURE, 1U).toInt()
    val xlsb = device.read(REGISTER_XLSB_PRESSURE, 1U).toInt()
    val rawValue = (msb shl 12) + (lsb shl 4) + (xlsb shr 4)

    var part1 = temperature / 2.0 - 64000.0
    var part2 = part1 * part1 * calibration.pressure6 / 32768.0
    part2 += part1 * calibration.pressure5 * 2
    part2 = part2 / 4.0 + calibration.pressure4 * 65536.0
    part1 = (calibration.pressure3 * part1 * part1 / 524288.0 + calibration.pressure2 * part1) / 524288.0
    part1 = (1.0 + part1 / 32768.0) * calibration.pressure1
    var pressure = 1048576.0 - rawValue
    pressure = (pressure - part2 / 4096.0) * 6250.0 / part1
    part1 = calibration.pressure9 * pressure * pressure / 2147483648.0
    part2 = pressure * calibration.pressure8 / 32768.0
    pressure += (part1 + part2 + calibration.pressure7) / 16.0

    return pressure / 100
 }