nand.BlockErase

#include <file_config.h>

U32 BlockErase (
    U32           row,         /* Block starting address */
    NAND_DRV_CFG* cfg);        /* Device configuration   */

The function BlockErase erases a NAND Flash block. The parameter row specifies the starting address of the Flash block. The parameter cfg is a pointer specifying the device configuration, which also contains default data positions as described in Page Layout Structure.

The function is part of the NAND Driver. The prototype is defined in the file File_Config.h. Developers must customize the function.

• RTV_NOERR - on success.
• ERR_NAND_ERASE - on failure.
• ERR_NAND_HW_TOUT - hardware data transfer timeout.

nand.Init, nand.PageRead, nand.PageWrite, nand.UnInit

/* NAND Device Driver Control Block */
NAND_DRV nand0_drv = {
  Init,
  UnInit,
  PageRead,
  PageWrite,
  BlockErase
};

static U32 BlockErase (U32 row, NAND_DRV_CFG *cfg)  {

  if (!StatusFlag (NAND_CON_READY))  {         /* Wait for controller ready    */
    return ERR_NAND_HW_TOUT;
  }
  MLC_CMD  = NAND_CMD_ERASE1ST;                /* Erase command 1              */
  SetAddr (row, cfg->AddrCycles);              /* Set address                  */
  MLC_CMD  = NAND_CMD_ERASE2ND;                /* Erase command 2              */

  if (!StatusFlag (NAND_CON_READY))  {         /* Wait for controller ready    */
    return ERR_NAND_HW_TOUT;
  }

  if (!StatusFlag (NAND_CHIP_BUSY))  {         /* Wait while NAND busy         */
    return ERR_NAND_HW_TOUT;
  }

  MLC_CMD = NAND_CMD_STATUS;                   /* Write Read Status command    */
  if ((U8)MLC_DATAX(0) & NAND_STAT_FAIL)  {    /* Check if command successful  */
    return ERR_NAND_ERASE;                     /* Block Erase Failed           */
  }
  return RTV_NOERR;
}