Struct Status 

pub struct Status { /* private fields */ }

The status register, read with command::READ_STATUS as one CRC-protected word.

It reports the heater, the alert state, whether a reset has happened, and how the last command and write were received. The flag bits (alert pending, the two tracking alerts, and reset detected) are cleared by command::CLEAR_STATUS.

Implementations

impl Status

pub const ALERT_PENDING: u16

Bit 15: at least one alert is pending.

pub const HEATER_ON: u16

Bit 13: the heater is on.

pub const HUMIDITY_TRACKING_ALERT: u16

Bit 11: a relative-humidity tracking alert.

pub const TEMPERATURE_TRACKING_ALERT: u16

Bit 10: a temperature tracking alert.

pub const RESET_DETECTED: u16

Bit 4: a hard reset, soft reset, or supply failure happened since the register was last cleared.

pub const COMMAND_FAILED: u16

Bit 1: the last command was not processed, being invalid or failing the command checksum.

pub const WRITE_CHECKSUM_FAILED: u16

Bit 0: the checksum of the last write transfer failed.

pub const DEFAULT: u16

The register’s value after power-up (0x8010): alert pending and reset detected set, everything else clear. The datasheet leaves bits 9:5 unspecified; they are zero here.

pub fn from_bits(bits: u16) -> Status

Wraps a raw status word.

Arguments

• bits - the 16-bit register value, for example the Self::DEFAULT word or a combination of the bit constants.

Returns

The status holding those bits.

pub fn parse(bytes: &[u8; 3]) -> Result<Status, SensorError>

Parses and CRC-checks the three bytes returned by command::READ_STATUS.

Arguments

• bytes - the register most-significant byte first, then its CRC.

Returns

The decoded status.

Errors

Returns SensorError::Crc if the CRC byte does not match the register bytes.

pub fn to_bytes(&self) -> [u8; 3]

Returns the three bytes a part in this state answers a status read with.

The inverse of parse.

Returns

The register most-significant byte first, then its CRC.

pub fn bits(&self) -> u16

Returns the raw register value.

pub fn alert_pending(&self) -> bool

Returns whether at least one alert is pending (bit 15).

pub fn heater_on(&self) -> bool

Returns whether the heater is on (bit 13).

pub fn humidity_tracking_alert(&self) -> bool

Returns whether a relative-humidity tracking alert is raised (bit 11).

pub fn temperature_tracking_alert(&self) -> bool

Returns whether a temperature tracking alert is raised (bit 10).

pub fn reset_detected(&self) -> bool

Returns whether a reset has happened since the register was last cleared (bit 4).

pub fn command_failed(&self) -> bool

Returns whether the last command was rejected (bit 1).

pub fn write_checksum_failed(&self) -> bool

Returns whether the last write transfer failed its checksum (bit 0).

Trait Implementations

impl Clone for Status

fn clone(&self) -> Status

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Status

impl Debug for Status

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

Formats the value using the given formatter.

impl Eq for Status

impl PartialEq for Status

fn eq(&self, other: &Status) -> 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 Status