rmk 0.9.0

Keyboard firmware written in Rust
Documentation 
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#[cfg(feature = "_nrf_ble")]
use embassy_nrf::gpio::{Input, Output};

/// BLE battery/charging GPIO configuration.
pub struct BleBatteryConfig<'a> {
    pub enabled: bool,
    #[cfg(feature = "_nrf_ble")]
    pub charge_state_pin: Option<Input<'a>>,
    #[cfg(feature = "_nrf_ble")]
    pub charge_led_pin: Option<Output<'a>>,
    #[cfg(feature = "_nrf_ble")]
    pub charge_state_low_active: bool,
    #[cfg(feature = "_nrf_ble")]
    pub charge_led_low_active: bool,
    #[cfg(not(feature = "_nrf_ble"))]
    pub _marker: core::marker::PhantomData<&'a ()>,
}

impl BleBatteryConfig<'_> {
    pub fn disabled() -> Self {
        Self {
            enabled: false,
            ..Default::default()
        }
    }
}

#[cfg(feature = "_nrf_ble")]
impl<'a> Default for BleBatteryConfig<'a> {
    fn default() -> Self {
        Self {
            enabled: true,
            charge_state_pin: None,
            charge_led_pin: None,
            charge_state_low_active: false,
            charge_led_low_active: false,
        }
    }
}

#[cfg(not(feature = "_nrf_ble"))]
impl<'a> Default for BleBatteryConfig<'a> {
    fn default() -> Self {
        Self {
            enabled: false,
            _marker: core::marker::PhantomData,
        }
    }
}

#[cfg(feature = "_nrf_ble")]
impl<'a> BleBatteryConfig<'a> {
    pub fn new(
        charge_state_pin: Option<Input<'a>>,
        charge_state_low_active: bool,
        charge_led_pin: Option<Output<'a>>,
        charge_led_low_active: bool,
    ) -> Self {
        Self {
            enabled: true,
            charge_state_pin,
            charge_state_low_active,
            charge_led_pin,
            charge_led_low_active,
        }
    }
}