Struct Calibration 

pub struct Calibration {
    pub dig_t1: u16,
    pub dig_t2: i16,
    pub dig_t3: i16,
    pub dig_p1: u16,
    pub dig_p2: i16,
    pub dig_p3: i16,
    pub dig_p4: i16,
    pub dig_p5: i16,
    pub dig_p6: i16,
    pub dig_p7: i16,
    pub dig_p8: i16,
    pub dig_p9: i16,
}

The per-chip trimming coefficients read from 0x88..=0x9F.

These are programmed into non-volatile memory during production and are constant for a given device, so they are read once at start-up and reused for every measurement.

Fields

dig_t1: u16

dig_T1, unsigned, at 0x88/0x89.

dig_t2: i16

dig_T2, signed, at 0x8A/0x8B.

dig_t3: i16

dig_T3, signed, at 0x8C/0x8D.

dig_p1: u16

dig_P1, unsigned, at 0x8E/0x8F.

dig_p2: i16

dig_P2, signed, at 0x90/0x91.

dig_p3: i16

dig_P3, signed, at 0x92/0x93.

dig_p4: i16

dig_P4, signed, at 0x94/0x95.

dig_p5: i16

dig_P5, signed, at 0x96/0x97.

dig_p6: i16

dig_P6, signed, at 0x98/0x99.

dig_p7: i16

dig_P7, signed, at 0x9A/0x9B.

dig_p8: i16

dig_P8, signed, at 0x9C/0x9D.

dig_p9: i16

dig_P9, signed, at 0x9E/0x9F.

Implementations

impl Calibration

pub fn parse(bytes: &[u8; 24]) -> Calibration

Parses the coefficients from the calibration block, each word LSB first.

Arguments

• bytes - the 24 bytes read from 0x88..=0x9F.

Returns

The decoded calibration.

pub fn to_bytes(&self) -> [u8; 24]

Builds the calibration block a device holding these coefficients would return.

Returns

The 24 bytes as they sit at 0x88..=0x9F.

pub fn compensate(&self, raw: &Measurement) -> Reading

Compensates a raw measurement into temperature and pressure.

Temperature is computed first because its t_fine intermediate feeds the pressure formula, exactly as the reference code shares it.

Arguments

• raw - the uncompensated 20-bit codes from the data registers.

Returns

The compensated Reading.

Trait Implementations

impl Clone for Calibration

fn clone(&self) -> Calibration

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for Calibration

impl Debug for Calibration

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Eq for Calibration

impl PartialEq for Calibration

fn eq(&self, other: &Calibration) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for Calibration