esp-rs bme280

bmp_tptp.rs

fn bmp_tptp(
    i2c_ref: Arc<Mutex<I2C0>>,
    sda: AnyIOPin,
    scl: AnyIOPin,
    config: Config,
) -> anyhow::Result<[f32; 4]> {
    use bme280::i2c::BME280;

    let i2c = i2c_ref.lock().unwrap();
    let i2c = RefCell::new(I2cDriver::new(i2c, sda, scl, &config)?);
    let mut r = [0f32; 4];
    {
        let mut bm = BME280::new_primary(i2c::RefCellDevice::new(&i2c));
        bm.init(&mut esp_idf_hal::delay::Ets)
            .map_err(|x| anyhow!("bme280 init error {:?}", x))?;
        let meas = bm
            .measure(&mut esp_idf_hal::delay::Ets)
            .map_err(|x| anyhow!("bme280 measure error {:?}", x))?;
        r[0] = meas.temperature;
        r[1] = meas.pressure;
    }
    {
        let mut bm = BME280::new_secondary(i2c::RefCellDevice::new(&i2c));
        bm.init(&mut esp_idf_hal::delay::Ets)
            .map_err(|x| anyhow!("bme280 init error {:?}", x))?;
        let meas = bm
            .measure(&mut esp_idf_hal::delay::Ets)
            .map_err(|x| anyhow!("bme280 measure error {:?}", x))?;
        r[2] = meas.temperature;
        r[3] = meas.pressure;
    }
    return Ok(r);
}