Expand description
This is a platform agnostic Rust driver for the VEML6075 UVA and UVB
light sensor, based on the embedded-hal
traits.
This driver allows you to:
- Enable/disable the sensor. See:
enable()
. - Read calibrated UVA, UVB and UV index measurement. See:
read()
. - Read raw measurement. See:
read_uva_raw()
. - Set integration time. See:
set_integration_time()
. - Set dynamic setting. See:
set_dynamic_setting()
. - Change operating mode. See:
set_mode()
. - Trigger measurement when on active force mode. See:
trigger_measurement()
. - Read the device id. See:
read_device_id()
.
§The device
The VEML6075 senses UVA and UVB light and incorporates photodiode, amplifiers,and analog / digital circuits into a single chip using a CMOS process. When the UV sensor is applied, it is able to detect UVA and UVB intensity to provide a measure of the signal strength as well as allowing for UVI measurement. The VEML6075 provides excellent temperature compensation capability for keeping the output stable under changing temperature. VEML6075’s functionality is easily operated via the simple command format of I2C (SMBus compatible) interface protocol. VEML6075’s operating voltage ranges from 1.7 V to 3.6 V.
Datasheet:
Application note:
§Usage examples (see also examples folder)
Please find additional examples using hardware in this repository: driver-examples
§Read calibrated UVA, UVB and UV index
Import this crate and an embedded_hal
implementation, then instantiate
the device:
use linux_embedded_hal::I2cdev;
use veml6075::{Calibration, Veml6075};
let dev = I2cdev::new("/dev/i2c-1").unwrap();
let mut sensor = Veml6075::new(dev, Calibration::default());
let m = sensor.read().unwrap();
println!("UVA: {:2}, UVB: {:2}, UVI: {:2}", m.uva, m.uvb, m.uv_index);
§Set integration time to 400ms
use linux_embedded_hal::I2cdev;
use veml6075::{Calibration, IntegrationTime, Veml6075};
let dev = I2cdev::new("/dev/i2c-1").unwrap();
let mut sensor = Veml6075::new(dev, Calibration::default());
sensor.set_integration_time(IntegrationTime::Ms400).unwrap();
§Set high dynamic setting
use linux_embedded_hal::I2cdev;
use veml6075::{Calibration, DynamicSetting, Veml6075};
let dev = I2cdev::new("/dev/i2c-1").unwrap();
let mut sensor = Veml6075::new(dev, Calibration::default());
sensor.set_dynamic_setting(DynamicSetting::High).unwrap();
§Change mode to active force (one-shot) and trigger a measurement
use linux_embedded_hal::I2cdev;
use veml6075::{Calibration, Mode, Veml6075};
let dev = I2cdev::new("/dev/i2c-1").unwrap();
let mut sensor = Veml6075::new(dev, Calibration::default());
sensor.set_mode(Mode::ActiveForce).unwrap();
loop {
sensor.trigger_measurement().unwrap();
// wait until measurement is ready (integration time)
let m = sensor.read().unwrap();
println!("Measurements UVA: {:2}, UVB: {:2}", m.uva, m.uvb);
}
§Read raw measurements for UVA and UVB
use linux_embedded_hal::I2cdev;
use veml6075::{Calibration, Veml6075};
let dev = I2cdev::new("/dev/i2c-1").unwrap();
let mut sensor = Veml6075::new(dev, Calibration::default());
let uva = sensor.read_uva_raw().unwrap();
let uvb = sensor.read_uvb_raw().unwrap();
println!("Measurements UVA: {}, UVB: {}", uva, uvb);
Structs§
- Calibration coefficients
- Calibrated Measurement
- Veml6075 device driver.
Enums§
- Dynamic setting
- All possible errors in this crate
- Integration time
- Operating mode