PX4-Autopilot/src/drivers/cyphal/SubscriptionManager.hpp

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/**
 * @file SubscriptionManager.hpp
 *
 * Manages the UAVCAN subscriptions
 *
 * @author Peter van der Perk <peter.vanderperk@nxp.com>
 */

#pragma once

#ifndef CONFIG_CYPHAL_ESC_SUBSCRIBER
#define CONFIG_CYPHAL_ESC_SUBSCRIBER 0
#endif

#ifndef CONFIG_CYPHAL_GNSS_SUBSCRIBER_0
#define CONFIG_CYPHAL_GNSS_SUBSCRIBER_0 0
#endif

#ifndef CONFIG_CYPHAL_GNSS_SUBSCRIBER_1
#define CONFIG_CYPHAL_GNSS_SUBSCRIBER_1 0
#endif

#ifndef CONFIG_CYPHAL_BMS_SUBSCRIBER
#define CONFIG_CYPHAL_BMS_SUBSCRIBER 0
#endif

#ifndef CONFIG_CYPHAL_UORB_SENSOR_GPS_SUBSCRIBER
#define CONFIG_CYPHAL_UORB_SENSOR_GPS_SUBSCRIBER 0
#endif

/* Preprocessor calculation of Subscribers count */

#define UAVCAN_SUB_COUNT CONFIG_CYPHAL_ESC_SUBSCRIBER + \
	CONFIG_CYPHAL_GNSS_SUBSCRIBER_0 + \
	CONFIG_CYPHAL_GNSS_SUBSCRIBER_1 + \
	CONFIG_CYPHAL_BMS_SUBSCRIBER + \
	CONFIG_CYPHAL_UORB_SENSOR_GPS_SUBSCRIBER

#include <px4_platform_common/defines.h>
#include <drivers/drv_hrt.h>
#include "Subscribers/DynamicPortSubscriber.hpp"
#include "CanardInterface.hpp"

#include "ServiceClients/GetInfo.hpp"
#include "ServiceClients/Access.hpp"
#include "ServiceClients/List.hpp"
#include "Subscribers/BaseSubscriber.hpp"
#include "Subscribers/Heartbeat.hpp"
#include "Subscribers/udral/Battery.hpp"
#include "Subscribers/udral/Esc.hpp"
#include "Subscribers/udral/Gnss.hpp"
#include "Subscribers/legacy/LegacyBatteryInfo.hpp"
#include "Subscribers/uORB/uorb_subscriber.hpp"

typedef struct {
	UavcanDynamicPortSubscriber *(*create_sub)(CanardHandle &handle, UavcanParamManager &pmgr) {};
	const char *subject_name;
	const uint8_t instance;
} UavcanDynSubBinder;

class SubscriptionManager
{
public:
	SubscriptionManager(CanardHandle &handle, UavcanParamManager &pmgr) : _canard_handle(handle), _param_manager(pmgr) {}
	~SubscriptionManager();

	void subscribe();
	void printInfo();
	void updateParams();

private:
	void updateDynamicSubscriptions();

	CanardHandle &_canard_handle;
	UavcanParamManager &_param_manager;
	UavcanDynamicPortSubscriber *_dynsubscribers {nullptr};

	UavcanHeartbeatSubscriber _heartbeat_sub {_canard_handle};

#if CONFIG_CYPHAL_GETINFO_RESPONDER
	// GetInfo response
	UavcanGetInfoResponse _getinfo_rsp {_canard_handle};
#endif

	// Process register requests
	UavcanAccessResponse  _access_rsp {_canard_handle, _param_manager};
	UavcanListResponse  _list_rsp {_canard_handle, _param_manager};

	const UavcanDynSubBinder _uavcan_subs[UAVCAN_SUB_COUNT] {
#if CONFIG_CYPHAL_ESC_SUBSCRIBER
		{
			[](CanardHandle & handle, UavcanParamManager & pmgr) -> UavcanDynamicPortSubscriber *
			{
				return new UavcanEscSubscriber(handle, pmgr, 0);
			},
			"esc",
			0
		},
#endif
#if CONFIG_CYPHAL_GNSS_SUBSCRIBER_0
		{
			[](CanardHandle & handle, UavcanParamManager & pmgr) -> UavcanDynamicPortSubscriber *
			{
				return new UavcanGnssSubscriber(handle, pmgr, 0);
			},
			"gps",
			0
		},
#endif
#if CONFIG_CYPHAL_GNSS_SUBSCRIBER_1 //FIXME decouple handletanceing
		{
			[](CanardHandle & handle, UavcanParamManager & pmgr) -> UavcanDynamicPortSubscriber *
			{
				return new UavcanGnssSubscriber(handle, pmgr, 1);
			},
			"gps",
			1
		},
#endif
#if CONFIG_CYPHAL_BMS_SUBSCRIBER
		{
			[](CanardHandle & handle, UavcanParamManager & pmgr) -> UavcanDynamicPortSubscriber *
			{
				return new UavcanBmsSubscriber(handle, pmgr, 0);
			},
			"energy_source",
			0
		},
#endif
#if 0 //Obsolete to be removed
		{
			[](CanardHandle & handle, UavcanParamManager & pmgr) -> UavcanDynamicPortSubscriber *
			{
				return new UavcanLegacyBatteryInfoSubscriber(handle, pmgr, 0);
			},
			"legacy_bms",
			0
		},
#endif
#if CONFIG_CYPHAL_UORB_SENSOR_GPS_SUBSCRIBER
		{
			[](CanardHandle & handle, UavcanParamManager & pmgr) -> UavcanDynamicPortSubscriber *
			{
				return new uORB_over_UAVCAN_Subscriber<sensor_gps_s>(handle, pmgr, ORB_ID(sensor_gps));
			},
			"uorb.sensor_gps",
			0
		},
#endif
	};
};