Method set_feature

src/lib.rs:123–164

Managed Write: enable dependencies, write, confirm, re-query dependents. Automatically calls `read_state_from_device()` after switching the Output. Pass `None` for value to toggle (flip between 0.0 and 1.0).

(
        &self,
        id: FeatureId,
        value: Option<f32>,
    )

    ///
    /// Pass `None` for value to toggle (flip between 0.0 and 1.0).
    pub fn set_feature(
        &self,
        id: FeatureId,
        value: Option<f32>,
    ) -> Result<(), Box<dyn Error>> {
        let feature = self.feature(id);

        let actual_value = match value {
            Some(value) => value,
            None => {
                if feature.value() == 0.0 {
                    1.0
                } else {
                    0.0
                }
            }
        };

        debug!("set_feature: {} = {}", id, actual_value);

        for &dependency_id in id.dependencies() {
            let dependency = self.feature(dependency_id);
            if dependency.value() != 1.0 {
                debug!("Enabling dependency: {} for {}", dependency_id, id);
                self.set_feature(dependency_id, Some(1.0))?;
            }
        }

        feature.write_to_device(actual_value);
        feature.read_from_device();

        for &dependent_id in id.dependents() {
            self.feature(dependent_id).read_from_device();
        }

        // changing the output changes the internal settings profile
        if feature.id == FeatureId::Output {
            self.read_state_from_device();
        }

        Ok(())
    }

    pub fn find_device(api: &HidApi) -> Result<DeviceInfo, Box<dyn Error>> {
        let device = api