SPI Flash Driver

SPI Flash Driver describes the flash programming interface functions for Flash devices. The functions are located in the file FS_SPI_FlashPrg.c of the folder \ARM\RL\FlashFS\Flash\device_type.

The driver control block structure is defined in the file File_Config.h as follows:

/* Embedded Flash Device driver */
typedef struct {
  BOOL (*Init)        (U32 adr, U32 clk);
  BOOL (*UnInit)      (void);
  BOOL (*ReadData)    (U32 adr, U32 sz, U8 *buf);
  BOOL (*ProgramPage) (U32 adr, U32 sz, U8 *buf);
  BOOL (*EraseSector) (U32 adr);
  BOOL (*EraseChip)   (void);                       /* Optional, NULL if not existing    */
} const EFS_DRV;

Developers can adapt the code of the following functions:

• Init()
  This function is called when the RL-FlashFS is initialized by the function finit.
• UnInit()
  This function is called to uninitialize the embedded flash drive by the function funinit.
• ReadData()
  This function is used to read data from a Flash Device.
• ProgramPage()
  This function is used to program data into a Flash Device.
• EraseSector()
  This function is called by the RL-FlashFS to erase a flash sector and from the fformat function to format the device.
• EraseChip()
  This function is used to global erase a flash device. It is called from the function fformat.