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/**
 * @file bmp388_i2c.cpp
 *
 * I2C interface for BMP388
 */

#include <drivers/device/i2c.h>

#include "bmp388.h"

class BMP388_I2C: public device::I2C, public IBMP388
{
public:
	BMP388_I2C(uint8_t bus, uint32_t device, int bus_frequency);
	virtual ~BMP388_I2C() = default;

	int init();

	uint8_t get_reg(uint8_t addr);
	int get_reg_buf(uint8_t addr, uint8_t *buf, uint8_t len);
	int set_reg(uint8_t value, uint8_t addr);
	calibration_s *get_calibration(uint8_t addr);

	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:
	struct calibration_s _cal;
};

IBMP388 *bmp388_i2c_interface(uint8_t busnum, uint32_t device, int bus_frequency)
{
	return new BMP388_I2C(busnum, device, bus_frequency);
}

BMP388_I2C::BMP388_I2C(uint8_t bus, uint32_t device, int bus_frequency) :
	I2C(DRV_BARO_DEVTYPE_BMP388, MODULE_NAME, bus, device, bus_frequency)
{
}

int BMP388_I2C::init()
{
	return I2C::init();
}

uint8_t BMP388_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 BMP388_I2C::get_reg_buf(uint8_t addr, uint8_t *buf, uint8_t len)
{
	const uint8_t cmd = (uint8_t)(addr);
	return transfer(&cmd, sizeof(cmd), buf, len);
}

int BMP388_I2C::set_reg(uint8_t value, uint8_t addr)
{
	uint8_t cmd[2] = { (uint8_t)(addr), value};
	return transfer(cmd, sizeof(cmd), nullptr, 0);
}

calibration_s *BMP388_I2C::get_calibration(uint8_t addr)
{
	const uint8_t cmd = (uint8_t)(addr);

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

	} else {
		return nullptr;
	}
}
