battery.hpp 3.06 KB
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/**
 * @author Jacob Dahl <dahl.jakejacob@gmail.com>
 * @author Alex Klimaj <alex@arkelectron.com>
 */

#pragma once

#include "sensor_bridge.hpp"
#include <uORB/topics/battery_status.h>
#include <uavcan/equipment/power/BatteryInfo.hpp>
#include <drivers/drv_hrt.h>
#include <px4_platform_common/module_params.h>

class UavcanBatteryBridge : public UavcanSensorBridgeBase, public ModuleParams
{
public:
	static const char *const NAME;

	UavcanBatteryBridge(uavcan::INode &node);

	const char *get_name() const override { return NAME; }

	int init() override;

private:

	void battery_sub_cb(const uavcan::ReceivedDataStructure<uavcan::equipment::power::BatteryInfo> &msg);
	void sumDischarged(hrt_abstime timestamp, float current_a);
	void determineWarning(float remaining);

	typedef uavcan::MethodBinder < UavcanBatteryBridge *,
		void (UavcanBatteryBridge::*)
		(const uavcan::ReceivedDataStructure<uavcan::equipment::power::BatteryInfo> &) >
		BatteryInfoCbBinder;

	uavcan::Subscriber<uavcan::equipment::power::BatteryInfo, BatteryInfoCbBinder> _sub_battery;

	DEFINE_PARAMETERS(
		(ParamFloat<px4::params::BAT_LOW_THR>) _param_bat_low_thr,
		(ParamFloat<px4::params::BAT_CRIT_THR>) _param_bat_crit_thr,
		(ParamFloat<px4::params::BAT_EMERGEN_THR>) _param_bat_emergen_thr
	)

	float _discharged_mah = 0.f;
	float _discharged_mah_loop = 0.f;
	uint8_t _warning;
	hrt_abstime _last_timestamp;
};