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 *    notice, this list of conditions and the following disclaimer in
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/**
 * @file bmp280_spi.cpp
 *
 * SPI interface for BMP280
 */

#include "bmp280.h"

#include <px4_platform_common/px4_config.h>
#include <drivers/device/i2c.h>


class BMP280_I2C: public device::I2C, public bmp280::IBMP280
{
public:
	BMP280_I2C(uint8_t bus, uint32_t device, int bus_frequency);
	virtual ~BMP280_I2C() override = default;

	int init() override { return I2C::init(); }

	uint8_t	get_reg(uint8_t addr) override;
	int	set_reg(uint8_t value, uint8_t addr) override;

	bmp280::data_s		*get_data(uint8_t addr) override;
	bmp280::calibration_s	*get_calibration(uint8_t addr) override;

	uint32_t get_device_id() const override { return device::I2C::get_device_id(); }

	uint8_t get_device_address() const override { return device::I2C::get_device_address(); }
private:
	bmp280::calibration_s	_cal{};
	bmp280::data_s		_data{};
};

bmp280::IBMP280 *bmp280_i2c_interface(uint8_t busnum, uint32_t device, int bus_frequency)
{
	return new BMP280_I2C(busnum, device, bus_frequency);
}

BMP280_I2C::BMP280_I2C(uint8_t bus, uint32_t device, int bus_frequency) :
	I2C(DRV_BARO_DEVTYPE_BMP280, MODULE_NAME, bus, device, bus_frequency)
{
}

uint8_t
BMP280_I2C::get_reg(uint8_t addr)
{
	uint8_t cmd[2] = { (uint8_t)(addr), 0};
	transfer(&cmd[0], 1, &cmd[1], 1);

	return cmd[1];
}

int
BMP280_I2C::set_reg(uint8_t value, uint8_t addr)
{
	uint8_t cmd[2] = { (uint8_t)(addr), value};
	return transfer(cmd, sizeof(cmd), nullptr, 0);
}

bmp280::data_s *
BMP280_I2C::get_data(uint8_t addr)
{
	const uint8_t cmd = addr;

	if (transfer(&cmd, sizeof(cmd), (uint8_t *)&_data, sizeof(bmp280::data_s)) == OK) {
		return (&_data);

	} else {
		return nullptr;
	}
}

bmp280::calibration_s *
BMP280_I2C::get_calibration(uint8_t addr)
{
	const uint8_t cmd = addr;

	if (transfer(&cmd, sizeof(cmd), (uint8_t *)&_cal, sizeof(bmp280::calibration_s)) == OK) {
		return &(_cal);

	} else {
		return nullptr;
	}
}