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scd4x: add support for SCD41 single-shot measurements #820

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Merged
deadprogram merged 1 commit into from
Dec 4, 2025
Merged

scd4x: add support for SCD41 single-shot measurements #820

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1 change: 1 addition & 0 deletions scd4x/registers.go
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Original file line number Diff line number Diff line change
Expand Up @@ -22,4 +22,5 @@ const (
CmdStartLowPowerPeriodicMeasurement = 0x21AC
CmdStartPeriodicMeasurement = 0x21B1
CmdStopPeriodicMeasurement = 0x3F86
CmdMeasureSingleShot = 0x219D
)
7 changes: 7 additions & 0 deletions scd4x/scd4x.go
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Original file line number Diff line number Diff line change
Expand Up @@ -82,6 +82,13 @@ func (d *Device) StartLowPowerPeriodicMeasurement() error {
return d.sendCommand(CmdStartLowPowerPeriodicMeasurement)
}

// MeasureSingleShot starts a single measurement cycle (SCD41 only). After this
// command is complete, the caller should wait for 5000ms before trying to read
// the result.
func (d *Device) MeasureSingleShot() error {
return d.sendCommand(CmdMeasureSingleShot)
}

// ReadData reads the data from the sensor and caches it.
func (d *Device) ReadData() error {
if err := d.sendCommandWithResult(CmdReadMeasurement, d.rx[0:9]); err != nil {
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