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#ifndef _VL53L0X_PLATFORM_H_
#define _VL53L0X_PLATFORM_H_

#include "vl53l0x_def.h"
#include "vl53l0x_platform_log.h"

#ifdef __cplusplus
extern "C" {
#endif

/**
 * @file vl53l0_platform.h
 *
 * @brief All end user OS/platform/application porting
 */
 
/**
 * @defgroup VL53L0X_platform_group VL53L0 Platform Functions
 * @brief    VL53L0 Platform Functions
 *  @{
 */

/**
 * @struct  VL53L0X_Dev_t
 * @brief    Generic PAL device type that does link between API and platform abstraction layer
 *
 */
typedef struct {
    VL53L0X_DevData_t Data;               /*!< embed ST Ewok Dev  data as "Data"*/

    /*!< user specific field */
    uint8_t   I2cDevAddr;                /*!< i2c device address user specific field */
    uint8_t   comms_type;                /*!< Type of comms : VL53L0X_COMMS_I2C or VL53L0X_COMMS_SPI */
    uint16_t  comms_speed_khz;           /*!< Comms speed [kHz] : typically 400kHz for I2C           */

} VL53L0X_Dev_t;


/**
 * @brief   Declare the device Handle as a pointer of the structure @a VL53L0X_Dev_t.
 *
 */
typedef VL53L0X_Dev_t* VL53L0X_DEV;

/**
 * @def PALDevDataGet
 * @brief Get ST private structure @a VL53L0X_DevData_t data access
 *
 * @param Dev       Device Handle
 * @param field     ST structure field name
 * It maybe used and as real data "ref" not just as "get" for sub-structure item
 * like PALDevDataGet(FilterData.field)[i] or PALDevDataGet(FilterData.MeasurementIndex)++
 */
#define PALDevDataGet(Dev, field) (Dev->Data.field)

/**
 * @def PALDevDataSet(Dev, field, data)
 * @brief  Set ST private structure @a VL53L0X_DevData_t data field
 * @param Dev       Device Handle
 * @param field     ST structure field name
 * @param data      Data to be set
 */
#define PALDevDataSet(Dev, field, data) (Dev->Data.field)=(data)


/**
 * @defgroup VL53L0X_registerAccess_group PAL Register Access Functions
 * @brief    PAL Register Access Functions
 *  @{
 */

/**
 * Lock comms interface to serialize all commands to a shared I2C interface for a specific device
 * @param   Dev       Device Handle
 * @return  VL53L0X_ERROR_NONE        Success
 * @return  "Other error code"    See ::VL53L0X_Error
 */
VL53L0X_Error VL53L0X_LockSequenceAccess(VL53L0X_DEV Dev);

/**
 * Unlock comms interface to serialize all commands to a shared I2C interface for a specific device
 * @param   Dev       Device Handle
 * @return  VL53L0X_ERROR_NONE        Success
 * @return  "Other error code"    See ::VL53L0X_Error
 */
VL53L0X_Error VL53L0X_UnlockSequenceAccess(VL53L0X_DEV Dev);


/**
 * Writes the supplied byte buffer to the device
 * @param   Dev       Device Handle
 * @param   index     The register index
 * @param   pdata     Pointer to uint8_t buffer containing the data to be written
 * @param   count     Number of bytes in the supplied byte buffer
 * @return  VL53L0X_ERROR_NONE        Success
 * @return  "Other error code"    See ::VL53L0X_Error
 */
VL53L0X_Error VL53L0X_WriteMulti(VL53L0X_DEV Dev, uint8_t index, uint8_t *pdata, uint32_t count);

/**
 * Reads the requested number of bytes from the device
 * @param   Dev       Device Handle
 * @param   index     The register index
 * @param   pdata     Pointer to the uint8_t buffer to store read data
 * @param   count     Number of uint8_t's to read
 * @return  VL53L0X_ERROR_NONE        Success
 * @return  "Other error code"    See ::VL53L0X_Error
 */
VL53L0X_Error VL53L0X_ReadMulti(VL53L0X_DEV Dev, uint8_t index, uint8_t *pdata, uint32_t count);

/**
 * Write single byte register
 * @param   Dev       Device Handle
 * @param   index     The register index
 * @param   data      8 bit register data
 * @return  VL53L0X_ERROR_NONE        Success
 * @return  "Other error code"    See ::VL53L0X_Error
 */
VL53L0X_Error VL53L0X_WrByte(VL53L0X_DEV Dev, uint8_t index, uint8_t data);

/**
 * Write word register
 * @param   Dev       Device Handle
 * @param   index     The register index
 * @param   data      16 bit register data
 * @return  VL53L0X_ERROR_NONE        Success
 * @return  "Other error code"    See ::VL53L0X_Error
 */
VL53L0X_Error VL53L0X_WrWord(VL53L0X_DEV Dev, uint8_t index, uint16_t data);

/**
 * Write double word (4 byte) register
 * @param   Dev       Device Handle
 * @param   index     The register index
 * @param   data      32 bit register data
 * @return  VL53L0X_ERROR_NONE        Success
 * @return  "Other error code"    See ::VL53L0X_Error
 */
VL53L0X_Error VL53L0X_WrDWord(VL53L0X_DEV Dev, uint8_t index, uint32_t data);

/**
 * Read single byte register
 * @param   Dev       Device Handle
 * @param   index     The register index
 * @param   data      pointer to 8 bit data
 * @return  VL53L0X_ERROR_NONE        Success
 * @return  "Other error code"    See ::VL53L0X_Error
 */
VL53L0X_Error VL53L0X_RdByte(VL53L0X_DEV Dev, uint8_t index, uint8_t *data);

/**
 * Read word (2byte) register
 * @param   Dev       Device Handle
 * @param   index     The register index
 * @param   data      pointer to 16 bit data
 * @return  VL53L0X_ERROR_NONE        Success
 * @return  "Other error code"    See ::VL53L0X_Error
 */
VL53L0X_Error VL53L0X_RdWord(VL53L0X_DEV Dev, uint8_t index, uint16_t *data);

/**
 * Read dword (4byte) register
 * @param   Dev       Device Handle
 * @param   index     The register index
 * @param   data      pointer to 32 bit data
 * @return  VL53L0X_ERROR_NONE        Success
 * @return  "Other error code"    See ::VL53L0X_Error
 */
VL53L0X_Error VL53L0X_RdDWord(VL53L0X_DEV Dev, uint8_t index, uint32_t *data);

/**
 * Threat safe Update (read/modify/write) single byte register
 *
 * Final_reg = (Initial_reg & and_data) |or_data
 *
 * @param   Dev        Device Handle
 * @param   index      The register index
 * @param   AndData    8 bit and data
 * @param   OrData     8 bit or data
 * @return  VL53L0X_ERROR_NONE        Success
 * @return  "Other error code"    See ::VL53L0X_Error
 */
VL53L0X_Error VL53L0X_UpdateByte(VL53L0X_DEV Dev, uint8_t index, uint8_t AndData, uint8_t OrData);

/** @} end of VL53L0X_registerAccess_group */

    
/**
 * @brief execute delay in all polling API call
 *
 * A typical multi-thread or RTOs implementation is to sleep the task for some 5ms (with 100Hz max rate faster polling is not needed)
 * if nothing specific is need you can define it as an empty/void macro
 * @code
 * #define VL53L0X_PollingDelay(...) (void)0
 * @endcode
 * @param Dev       Device Handle
 * @return  VL53L0X_ERROR_NONE        Success
 * @return  "Other error code"    See ::VL53L0X_Error
 */
VL53L0X_Error VL53L0X_PollingDelay(VL53L0X_DEV Dev); /* usually best implemented as a real function */

/** @} end of VL53L0X_platform_group */

#ifdef __cplusplus
}
#endif

#endif  /* _VL53L0X_PLATFORM_H_ */