• The return value is 2 bytes wide unsigned, the unit is 1 Pa, the resolution is 1/16 hPa = 0.0625 hPa, and the theoretical range is from 0.0000 hPa to 4,095.8750 hPa. Value 0xFFFF (i.e. 4,095.9375 hPa) specifies a sensor error.
[iiii.iiii.iiii.ffff]
bit: 0…3 Fractional part (unit 1/16 hPa).
bit: 4…15 Integer part (unit 1 hPa).
• FRC 2-byte: FRC return value is the atmospheric pressure value F = ( Pressure * 16 ) + 4 (i.e. 0x3E84 = 16,004 is 1,000 hPa). Because of FRC predefined values the raw values from 0xFFFC to 0xFFFF (i.e. 4,095.7500 hPa to 4,095.9375 hPa) cannot be passed.