#als #ambient #light #sensor #embedded-hal-driver

no-std veml6030

Platform-agnostic Rust driver for the VEML6030 and VEML7700 high-accuracy ambient light sensors

3 releases

0.1.2 Nov 5, 2020
0.1.1 Dec 21, 2019
0.1.0 Dec 20, 2019

#903 in Embedded development

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Rust VEML6030/VEML7700 High Accuracy Ambient Light Sensor Driver

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This is a platform agnostic Rust driver for the VEML6030 and VEML7700 high accuracy ambient light sensors using the embedded-hal traits.

This driver allows you to:

  • Enable/disable the device. See: enable().
  • Read the measured lux value. See: read_lux().
  • Read the white channel measurement. See: read_white().
  • Read the measured ALS value in raw format. See: read_raw().
  • Calculate the compensated lux for a raw ALS value. See: convert_raw_als_to_lux().
  • Set the gain. See: set_gain().
  • Set the integration time. See: set_integration_time().
  • Set the fault count. See: set_fault_count().
  • Enable/disable and configure power saving mode. See: enable_power_saving().
  • Enable/disable interrupts. See: enable_interrupts().
  • Read the interrupt status. See: read_interrupt_status().
  • Set the high/low thresholds in lux or raw. See: set_high_threshold_lux().
  • Calculate the compensated raw threshold value ahead of time. See: calculate_raw_threshold_value().

Introductory blog post

The devices

Vishay's VEML6030 and VEML7700 are high accuracy ambient light digital 16-bit resolution sensors in a miniature transparent package. They include a high sensitive photodiode, a low noise amplifier, a 16-bit A/D converter and support an easy to use I2C bus communication interface and additional interrupt feature. The ambient light result is as digital value available.

Datasheets: VEML6030 - VEML7700

Application Notes:


To use this driver, import this crate and an embedded_hal implementation, then instantiate the device.

VEML6030 and VEML7700 expose the same interface over I2C. To communicate with a VEML7700 simply use this driver as if communicating with a VEML6030.

Please find additional examples using hardware in this repository: driver-examples

use linux_embedded_hal::I2cdev;
use veml6030::{SlaveAddr, Veml6030};

fn main() {
    let dev = I2cdev::new("/dev/i2c-1").unwrap();
    let address = SlaveAddr::default();
    let mut sensor = Veml6030::new(dev, address);
    loop {
        let lux = sensor.read_lux().unwrap();
        println!("lux: {:2}", lux);


For questions, issues, feature requests, and other changes, please file an issue in the github project.


Licensed under either of

at your option.


Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.