#rate #monitor #sensor #embedded-hal-driver #heart

no-std hrs3300

Platform-agnostic Rust driver for the HRS3300 heart rate sensor/monitor

1 unstable release

Uses old Rust 2015

0.1.0 Apr 25, 2020

#615 in Embedded development


235 lines

Rust HRS3300 Heart Rate Sensor Driver

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This is a platform agnostic Rust driver for the HRS3300 optical heart rate sensor using the embedded-hal traits.

This driver allows you to:

  • Enable/disable heart rate sensor. See: enable_hrs().
  • Enable/disable oscillator. See: enable_oscillator().
  • Initialize the device. See: init().
  • Set the conversion delay. See: set_conversion_delay().
  • Set the gain. See: set_gain().
  • Set the ambient light sensor resolution. See: set_als_resolution().
  • Set the LED current. See: set_led_current().
  • Read the device id. See: device_id().
  • Read the last heart rate sensor measurement. See: read_hrs().
  • Read the last ambient light sensor measurement. See: read_als().
  • Write/Read a register with a custom value. See: write_register().

The device

HRSS3300 is an optical digital heart rate sensor/monitor featuring a 525nm green LED and a reflection light detector for the PPG signal from the human body. The typical heart rate measurement samples the reflected PPG signal at 25Hz then the results can be read via the I2C bus.



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

extern crate hrs3300;
extern crate linux_embedded_hal as hal;
use hrs3300::Hrs3300;

fn main() {
    let dev = hal::I2cdev::new("/dev/i2c-1").unwrap();
    let mut sensor = Hrs3300::new(dev);
    loop {
        let hrs = sensor.read_hrs().unwrap();
        let als = sensor.read_als().unwrap();
        println!("HRS: {}, ALS: {}", hrs, als);


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


Licensed under either of

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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.