SEN66 Driver

A driver for interacting with Sensirion's SEN66 environment sensing platform via I2C. The driver is based on the embedded-hal traits and offers a synchronous and asynchronous interface.

Provides a full implementation of the SEN66 features:

• Measure environment parameters:
  • Mass concentrations PM1.0, PM2.5, PM4.0, PM10.0 in ug/m³
  • Number concentrations PM0.5, PM1.0, PM2.5, PM4.0, PM10.0 in p/cm³
  • Ambient relative humidity in %
  • Ambient temperature in °C
  • VOC Index around 100
  • NOx Index around 1
  • Raw VOC ticks
  • Raw NOx ticks
  • CO2 in ppm
• Configure VOC, NOx, CO2 and Temperature determination
• Perform forced CO2 recalibration, SHT heating and fan cleaning
• Read out device information
  • Serial Number
  • Product Name
  • Device Status

Example

This example showcases how to use the SEN66 with a ESP32-C6-DevKitM-1 using embassy.

use sen66_interface::asynch::Sen66;

#[esp_hal_embassy::main]
async fn main(spawner: Spawner) {
    let config = esp_hal::Config::default().with_cpu_clock(CpuClock::max());
    let peripherals = esp_hal::init(config);

    let timer0 = esp_hal::timer::systimer::SystemTimer::new(peripherals.SYSTIMER);
    esp_hal_embassy::init(timer0.alarm0);

    let i2c = esp_hal::i2c::master::I2c::new(
        peripherals.I2C0,
        esp_hal::i2c::master::Config::default()
        ).unwrap()
        .into_async()
        .with_sda(peripherals.GPIO22)
        .with_scl(peripherals.GPIO23);

    let mut sensor = Sen66::new(embassy_time::Delay, i2c);

    // Provide enough time to start up after power-on
    embassy_time::Timer::after(embassy_time::Duration::from_millis(100)).await;

    sensor.get_product_name().await.unwrap()
}

Feature Flags

• async: Provides an async interface, enabled by default.

• blocking: Provides a blocking interface.

• defmt: Provides support for defmt.

Contributing

If you want to contribute, open a Pull Request with your suggested changes and ensure that the integration pipeline runs.

• Commits should adhere to the Conventional Commits specification
• The integration pipeline must pass.
• Test coverage should not degrade.
• At least one review is required

License

Licensed under either of

• Apache License, Version 2.0 (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
• MIT licenses (LICENSE-MIT or http://opensource.org/licenses/MIT)

SPDX-License-Identifier: Apache-2.0 OR MIT