Created
March 21, 2024 18:25
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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 | |
} |
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