Struct veml7700::Veml7700

pub struct Veml7700<I2C> { /* fields omitted */ }

VEML7700 device driver.

Implementations

impl<I2C, E> Veml7700<I2C> where
    I2C: Write<Error = E>, 

pub fn new(i2c: I2C) -> Self

Create new instance of the VEML6040 device.

pub fn destroy(self) -> I2C

Destroy driver instance, return I²C bus instance.

impl<I2C, E> Veml7700<I2C> where
    I2C: Write<Error = E>, 

pub fn enable(&mut self) -> Result<(), Error<E>>

Enable the device.

Note that when activating the sensor a wait time of 4 ms should be observed before the first measurement is picked up to allow for a correct start of the signal processor and oscillator.

pub fn disable(&mut self) -> Result<(), Error<E>>

Disable the device (shutdown).

pub fn set_integration_time(
    &mut self,
    it: IntegrationTime
) -> Result<(), Error<E>>

Set the integration time.

pub fn set_gain(&mut self, gain: Gain) -> Result<(), Error<E>>

Set the gain.

pub fn set_fault_count(&mut self, fc: FaultCount) -> Result<(), Error<E>>

Set the number of times a threshold crossing must happen consecutively to trigger an interrupt.

pub fn enable_interrupts(&mut self) -> Result<(), Error<E>>

Enable interrupt generation.

pub fn disable_interrupts(&mut self) -> Result<(), Error<E>>

Disable interrupt generation.

pub fn set_high_threshold_raw(&mut self, threshold: u16) -> Result<(), Error<E>>

Set the ALS high threshold in raw format

pub fn set_low_threshold_raw(&mut self, threshold: u16) -> Result<(), Error<E>>

Set the ALS low threshold in raw format

pub fn set_high_threshold_lux(&mut self, lux: f32) -> Result<(), Error<E>>

Set the ALS high threshold in lux.

For values higher than 1000 lx and 1/4 or 1/8 gain, the inverse of the compensation formula is applied (this involves quite some math).

pub fn set_low_threshold_lux(&mut self, lux: f32) -> Result<(), Error<E>>

Set the ALS low threshold in lux.

For values higher than 1000 lx and 1/4 or 1/8 gain, the inverse of the compensation formula is applied (this involves quite some math).

pub fn calculate_raw_threshold_value(&self, lux: f32) -> u16

Calculate raw value for threshold applying compensation if necessary.

This takes into consideration the configured integration time and gain and compensates the lux value if necessary.

For values higher than 1000 lx and 1/4 or 1/8 gain, the inverse of the compensation formula is applied. This involves quite some math so it may be interesting to calculate the threshold values ahead of time.

pub fn enable_power_saving(
    &mut self,
    psm: PowerSavingMode
) -> Result<(), Error<E>>

Enable the power-saving mode

pub fn disable_power_saving(&mut self) -> Result<(), Error<E>>

Disable the power-saving mode

impl<I2C, E> Veml7700<I2C> where
    I2C: WriteRead<Error = E>, 

pub fn read_interrupt_status(&mut self) -> Result<InterruptStatus, Error<E>>

Read whether an interrupt has occurred.

Note that the interrupt status is updated at the same rate as the measurements. Once triggered, flags will stay true until a measurement is taken which does not exceed the threshold.

pub fn read_raw(&mut self) -> Result<u16, Error<E>>

Read ALS high resolution output data in raw format

pub fn read_lux(&mut self) -> Result<f32, Error<E>>

Read ALS high resolution output data converted to lux

For values higher than 1000 lx and 1/4 or 1/8 gain, the following compensation formula is applied: lux = 6.0135e-13*(lux^4) - 9.3924e-9*(lux^3) + 8.1488e-5*(lux^2) + 1.0023*lux

pub fn convert_raw_als_to_lux(&self, raw_als: u16) -> f32

Calculate lux value for a raw ALS measurement.

This takes into consideration the configured integration time and gain and compensates the lux value if necessary.

For values higher than 1000 lx and 1/4 or 1/8 gain, the following compensation formula is applied: lux = 6.0135e-13*(lux^4) - 9.3924e-9*(lux^3) + 8.1488e-5*(lux^2) + 1.0023*lux

pub fn read_white(&mut self) -> Result<u16, Error<E>>

Read white channel measurement

Trait Implementations

impl<I2C: Debug> Debug for Veml7700<I2C>

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

Formats the value using the given formatter.