Move battery measurement to its own class

1 files changed, 44 insertions, 0 deletions

diff --git a/src/battery/include/battery.hpp b/src/battery/include/battery.hpp
new file mode 100644
index 00000000..dcb9b4ea
--- /dev/null
+++ b/src/battery/include/battery.hpp
@@ -0,0 +1,44 @@
+/*
+ * Copyright 2023 jacqueline <me@jacqueline.id.au>
+ *
+ * SPDX-License-Identifier: GPL-3.0-only
+ */
+
+#pragma once
+
+#include <cstdint>
+
+#include "freertos/FreeRTOS.h"
+#include "freertos/timers.h"
+
+#include "adc.hpp"
+#include "samd.hpp"
+
+namespace battery {
+
+class Battery {
+ public:
+  Battery(drivers::Samd* samd, drivers::AdcBattery* adc);
+  ~Battery();
+
+  auto Update() -> void;
+
+  struct BatteryState {
+    uint_fast8_t percent;
+    bool is_charging;
+  };
+
+  auto State() -> std::optional<BatteryState>;
+
+ private:
+  auto EmitEvent() -> void;
+
+  drivers::Samd* samd_;
+  drivers::AdcBattery* adc_;
+
+  TimerHandle_t timer_;
+  std::mutex state_mutex_;
+  std::optional<BatteryState> state_;
+};
+
+}  // namespace battery