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#pragma once

namespace Bosch::BMI088::Accelerometer
{

// TODO: move to a central header
static constexpr uint8_t Bit0 = (1 << 0);
static constexpr uint8_t Bit1 = (1 << 1);
static constexpr uint8_t Bit2 = (1 << 2);
static constexpr uint8_t Bit3 = (1 << 3);
static constexpr uint8_t Bit4 = (1 << 4);
static constexpr uint8_t Bit5 = (1 << 5);
static constexpr uint8_t Bit6 = (1 << 6);
static constexpr uint8_t Bit7 = (1 << 7);

static constexpr uint32_t SPI_SPEED = 10 * 1000 * 1000; // 10MHz SPI serial interface
static constexpr uint8_t DIR_READ = 0x80;

static constexpr uint8_t ID_088 = 0x1E;
static constexpr uint8_t ID_090L = 0x1A;

enum class Register : uint8_t {
	ACC_CHIP_ID        = 0x00,

	TEMP_MSB           = 0x22,
	TEMP_LSB           = 0x23,

	FIFO_LENGTH_0      = 0x24,
	FIFO_LENGTH_1      = 0x25,

	FIFO_DATA          = 0x26,

	ACC_CONF           = 0x40,
	ACC_RANGE          = 0x41,

	FIFO_WTM_0         = 0x46,
	FIFO_WTM_1         = 0x47,
	FIFO_CONFIG_0      = 0x48,
	FIFO_CONFIG_1      = 0x49,

	INT1_IO_CONF       = 0x53,

	INT1_INT2_MAP_DATA = 0x58,

	ACC_PWR_CONF       = 0x7C,
	ACC_PWR_CTRL       = 0x7D,
	ACC_SOFTRESET      = 0x7E,
};

// ACC_CONF
enum ACC_CONF_BIT : uint8_t {
	// [7:4] acc_bwp
	acc_bwp_Normal = Bit7 | Bit5,        // Filter setting normal

	// [3:0] acc_odr
	acc_odr_1600   = Bit3 | Bit2,        // ODR 1600 Hz
};

// ACC_RANGE
enum ACC_RANGE_BIT : uint8_t {
	acc_range_3g  = 0,           // ±3g
	acc_range_6g  = Bit0,        // ±6g
	acc_range_12g = Bit1,        // ±12g
	acc_range_24g = Bit1 | Bit0, // ±24g
};

// FIFO_CONFIG_0
enum FIFO_CONFIG_0_BIT : uint8_t {
	BIT1_ALWAYS = Bit1, // This bit must always be ‘1’.
	FIFO_mode   = Bit0,
};

// FIFO_CONFIG_1
enum FIFO_CONFIG_1_BIT : uint8_t {
	Acc_en      = Bit6,
	BIT4_ALWAYS = Bit4, // This bit must always be ‘1’.
};

// INT1_IO_CONF
enum INT1_IO_CONF_BIT : uint8_t {
	int1_in  = Bit4,
	int1_out = Bit3,

	int1_lvl = Bit1,
};

// INT1_INT2_MAP_DATA
enum INT1_INT2_MAP_DATA_BIT : uint8_t {
	int2_drdy  = Bit6,
	int2_fwm   = Bit5,
	int2_ffull = Bit4,

	int1_drdy  = Bit2,
	int1_fwm   = Bit1,
	int1_ffull = Bit0,
};

// ACC_PWR_CONF
enum ACC_PWR_CONF_BIT : uint8_t {
	acc_pwr_save = 0x03
};

// ACC_PWR_CTRL
enum ACC_PWR_CTRL_BIT : uint8_t {
	acc_enable = 0x04
};

namespace FIFO
{
static constexpr size_t SIZE = 1024;

// 1. Acceleration sensor data frame   - Frame length: 7 bytes (1 byte header + 6 bytes payload)
// Payload: the next bytes contain the sensor data in the same order as defined in the register map (addresses 0x12 – 0x17).
// 2. Skip Frame                       - Frame length: 2 bytes (1 byte header + 1 byte payload)
// Payload: one byte containing the number of skipped frames. When more than 0xFF frames have been skipped, 0xFF is returned.
// 3. Sensortime Frame                 - Frame length: 4 bytes (1 byte header + 3 bytes payload)
// Payload: Sensortime (content of registers 0x18 – 0x1A), taken when the last byte of the last frame is read.

struct DATA {
	uint8_t Header;
	uint8_t ACC_X_LSB;
	uint8_t ACC_X_MSB;
	uint8_t ACC_Y_LSB;
	uint8_t ACC_Y_MSB;
	uint8_t ACC_Z_LSB;
	uint8_t ACC_Z_MSB;
};
static_assert(sizeof(DATA) == 7);

enum header : uint8_t {
	sensor_data_frame       = 0b10000100,
	skip_frame              = 0b01000000,
	sensor_time_frame       = 0b01000100,
	FIFO_input_config_frame = 0b01001000,
	sample_drop_frame       = 0b01010000,
};

} // namespace FIFO
} // namespace Bosch::BMI088::Accelerometer