Enum Command

pub enum Command {
    TriggerContinuousMeasurement = 16,
    StopContinuousMeasurement = 260,
    SetMeasurementInterval = 17_920,
    GetDataReady = 514,
    ReadMeasurement = 768,
    ActivateAutomaticSelfCalibration = 21_254,
    ForcedRecalibrationValue = 20_996,
    SetTemperatureOffset = 21_507,
    SetAltitudeCompensation = 20_738,
    ReadFirmwareVersion = 53_504,
    SoftReset = 54_020,
}

I2C Commands for the SCD30 according to its interface description

Variants

TriggerContinuousMeasurement = 16

Enable continuous measurements with an ambient pressure compensation. The ambient pressure compensation is sent as an argument after the command. Setting it to 0 uses the default value of 1013.25 mBar. Accepted value range: 0 or [700…1400] in mBar.

StopContinuousMeasurement = 260

Stop continuous measurements.

SetMeasurementInterval = 17_920

Sets the measurement interval in continuous mode. The interval is sent as an argument after the command. The initial value is 2 s. Accepted value range: [2…1800] in s. If no argument is given the value is read back.

GetDataReady = 514

Queries whether a measurement can be read from the sensor’s buffer. The answer is 1 if a measurement is available, 0 otherwise.

ReadMeasurement = 768

If a measurement is available reads out the measurement. The measurement contains the CO2 concentration in ppm, the temperature in °C and the relative humidity in %.

ActivateAutomaticSelfCalibration = 21_254

(De-)Activates continuous, automatic self calibration (ASC). The setting is sent as an argument after the command. Sending a 1 activates ASC, sending a 0 deactivates ASC. See the interface description for the self-calibration procedure.

ForcedRecalibrationValue = 20_996

Set or get the forced re-calibration value (FRC). After re-powering this returns the standard value of 400 ppm. Sending an argument after the command sets the FRC to the sent value. Accepted value range: [400…2000] ppm. If no argument is given the value is read back.

SetTemperatureOffset = 21_507

Set temperature offset caused by self-heating. The offset is sent as an argument after the command. Accepted value range: [0.1…UINT16::MAX * 0.1] in °C.

SetAltitudeCompensation = 20_738

Set operating height over sea level. The height is sent as an argument after the command. Accepted value range: [0..UINT16::MAX] in m above sea level. If no argument is given the value is read back.

ReadFirmwareVersion = 53_504

Queries the firmware version of the sensor. The responses is the major.minor version.

SoftReset = 54_020

Reset the device, similar to a power-off reset, by restarting the sensor controller.

Implementations

impl Command

pub fn to_be_bytes(&self) -> [u8; 2]

Returns a big endian byte representation of the command.

Trait Implementations

impl Clone for Command

fn clone(&self) -> Command

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Command