Module capsules_extra::hs3003

source ·
Expand description

Sensor Driver for the Renesas HS3003 Temperature/Humidity sensor using the I2C bus.

https://www.renesas.com/us/en/document/dst/hs300x-datasheet

The HS300x (HS3001 and HS3003) series is a highly accurate, fully calibrated relative humidity and temperature sensor. The MEMS sensor features a proprietary sensor-level protection, ensuring high reliability and long-term stability. The high accuracy, fast measurement response time, and long-term stability combined with the small package size makes the HS300x series ideal for a wide number of applications ranging from portable devices to products designed for harsh environments.

§Driver Semantics

This driver exposes the HS3003’s temperature and humidity functionality via the TemperatureDriver and HumidityDriver HIL interfaces. If the driver receives a request for either temperature or humidity while a request for the other is outstanding, both will be returned to their respective clients when the I2C transaction is completed, rather than performing two separate transactions.

§Limitations

The driver uses floating point math to adjust the readings. This must be done and macthes the chip’s datasheet. This could decrease performance on platforms that don’t have hardware support for floating point math.

§Usage

ⓘ

let hs3003_i2c = static_init!(
    capsules::virtual_i2c::I2CDevice,
    capsules::virtual_i2c::I2CDevice::new(i2c_bus, 0x44));
let hs3003 = static_init!(
    capsules::hs3003::Hs3003<'static>,
    capsules::hs3003::Hs3003::new(hs3003_i2c,
        &mut capsules::hs3003::BUFFER));
hs3003_i2c.set_client(hs3003);

Structs§