rmk 0.9.0

Keyboard firmware written in Rust
Documentation 
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//! Battery LED processor for RMK
use embedded_hal::digital::StatefulOutputPin;
use rmk_macro::processor;
use rmk_types::battery::{BatteryStatus, ChargeState};

use crate::driver::gpio::OutputController;
use crate::event::BatteryStatusEvent;

#[processor(subscribe = [BatteryStatusEvent], poll_interval = 1000)]
pub struct BatteryLedProcessor<P: StatefulOutputPin> {
    pin: OutputController<P>,
    state: BatteryStatus,
}

impl<P: StatefulOutputPin> BatteryLedProcessor<P> {
    pub fn new(pin: P, low_active: bool) -> Self {
        Self {
            pin: OutputController::new(pin, low_active),
            state: BatteryStatus::Unavailable,
        }
    }

    async fn on_battery_status_event(&mut self, event: BatteryStatusEvent) {
        self.state = event.into();
    }

    async fn poll(&mut self) {
        match self.state {
            BatteryStatus::Unavailable => self.pin.deactivate(),
            BatteryStatus::Available { charge_state, level } => {
                if charge_state == ChargeState::Charging {
                    self.pin.activate();
                } else if level.unwrap_or(100) < 10 {
                    // Battery low, blinking the LED
                    self.pin.toggle();
                } else {
                    self.pin.deactivate();
                }
            }
        }
    }
}