#ifndef USER_FSD_H__
#define USER_FSD_H__

#include <stdbool.h>
#include <stdio.h>
#include <stdint.h>
#include "define.h"
#include "nrf_fstorage.h"
#include "nrf_fstorage_sd.h"

#ifndef FLASH_PAGE_SIZE
	#define FLASH_PAGE_SIZE    											4096
#endif

//页起始地址
#define USER_FLASH_START_ADDR 													FLASH_PAGE_SIZE*USER_FLASH_START_PAGE_NUM
#define USER_FLASH_END_ADDR 														USER_FLASH_START_ADDR+FLASH_PAGE_SIZE

typedef enum
{
	FSTORAGE_NULL,
	FSTORAGE_WRITE,
	FSTORAGE_READ,
	FSTORAGE_ERASE
} fstorage_work_type_t;

typedef enum
{
	FSTORAGE_FAIL,
	FSTORAGE_WRITE_OK,
	FSTORAGE_READ_OK,
	FSTORAGE_ERASE_OK
} fstorage_stat_type_t;

typedef void (*fsd_rec_func)(fstorage_stat_type_t stat);

typedef struct
{
	fsd_rec_func func;
	fstorage_work_type_t type;
	fstorage_work_type_t next_type;
	uint16_t data_len;
	uint8_t *data;
} fstorage_work_s;

/**
 * @brief fstorage event handler.
 *
 * @param[in] p_event     Pointer to an fstorage event. The event structure is allocated on
 *                        the stack, so it is valid only within the context of
 *                        the event handler.
 */
//typedef void (* nrf_fstorage_event_handler_t)(nrf_fstorage_evt_t const * p_event);

/*******************************************************************
* Function Nume: flash_write_data
* Descriptions : write data from flash
* In Para      : address: address to access(address must be word-aligned), length: length to be read(4 integer multiple)
* In-Out Para  : none
* Out Para     : data: data buffer to be read
* Return Value : FLASH_SUCCESS: success, FLASH_ERROR_INVALID_ADDRESS: address error
*******************************************************************/
ret_code_t flash_write_data(uint32_t address, uint8_t *data, uint16_t length);

/*******************************************************************
* Function Nume: flash_read_data
* Descriptions : read data from flash
* In Para      : address: address to access(align=2), length: length to be read(4 integer multiple)
* In-Out Para  : none
* Out Para     : data: data buffer to be read
* Return Value : FLASH_SUCCESS: success, FLASH_ERROR_INVALID_ADDRESS: address error
*******************************************************************/
ret_code_t flash_read_data(uint32_t address, uint8_t *data, uint16_t length);

/*******************************************************************
* Function Nume: flash_erase_data
* Descriptions : erase flash data
* In Para      : address: address to access(align=2), length: length to be erased(4 integer multiple)
* In-Out Para  : none
* Out Para     : none
* Return Value : FLASH_SUCCESS: success, FLASH_ERROR_INVALID_ADDRESS: address error
*******************************************************************/
ret_code_t flash_erase_data(uint32_t address, uint16_t length);

ret_code_t flash_init(nrf_fstorage_api_t * p_fs_api);
ret_code_t flash_uninit(nrf_fstorage_api_t * p_fs_api);
void free_fsdwrarray(void);
extern fstorage_work_s fstorage_work;

#endif	//USER_FSD_H__