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/**
 * @file ft7_technologies.hpp
 * @author Henry Kotze <henry@flycloudline.com>
 *
 * Driver for the FT Technology Wind Sensor. FT742
 */

#pragma once

#include <px4_platform_common/px4_config.h>
#include <px4_platform_common/px4_work_queue/ScheduledWorkItem.hpp>
#include <uORB/Publication.hpp>
#include <uORB/topics/sensor_airflow.h>
#include <drivers/drv_hrt.h>
#include <drivers/device/device.h>
#include <lib/parameters/param.h>
#include <lib/perf/perf_counter.h>

#include <drivers/drv_hrt.h>

using namespace time_literals;


class Ft7Technologies : public px4::ScheduledWorkItem
{
public:
	Ft7Technologies(const char *port);
	~Ft7Technologies() override;

	int 			init();
	void				print_info();

private:

	void				start();
	void				stop();
	void				Run() override;
	int				measure();
	int				collect();
	bool 				checksum(char *buf, uint32_t checksum);
	uint8_t				hex2int(char ch);

	uORB::Publication<sensor_airflow_s> _sensor_airflow_pub{ORB_ID(sensor_airflow)};

	char 				_port[20] {};
	char 				_readbuf[30] {};
	uint64_t         		_interval{100000};
	bool				_collect_phase{false};
	int				_fd{-1};
	char				_linebuf[20] {};
	hrt_abstime			_last_read{0};
	hrt_abstime			_last_measure{0};

	char 				_raw_angle[5];
	char 				_raw_speed[5];
	char 				_raw_status[2];
	char 				_raw_checksum[3];

	uint16_t 			_checksum{0};
	uint32_t 			_hex_checksum{0};
	int				_msg_part_counter{0};
	int				_byte_counter{0};
	int				_msg_byte_counter{0};
	uint32_t			_checksum_counter{0};

	perf_counter_t			_sample_perf;
	perf_counter_t			_comms_errors;

};