Core lockup reset when erase a flash sector in KE02

[raysss]

When I try to erase a flash sector in MKE02Z64VLD4,the core lockup reset is occured(the LOCKUP bit in SIM->SRSID is set).

the FTMRH registers config as:

	FTMRH->FCLKDIV = 0x0f;	//15.6~16.6MHz
	FTMRH->FCNFG = 0x00;
	FTMRH->FERCNFG = 0x00;

and the following functions for erasing a flash sector:

bool FlashPreCheck(void)

{

  if((FTMRH->FCLKDIV & FTMRH_FCLKDIV_FDIV_MASK) != 0x0f){

  if((FTMRH->FCLKDIV & FTMRH_FCLKDIV_FDIVLCK_MASK) != 0){

  NVIC_SystemReset();

  }

  else{

  if((FTMRH->FSTAT & FTMRH_FSTAT_CCIF_MASK) != 0){

  FTMRH->FCLKDIV = 0x0f;

  }

  }

  return FALSE;

  }

  if((FTMRH->FSTAT & FTMRH_FSTAT_CCIF_MASK) == 0){

  return FALSE;

  }

  if((FTMRH->FSTAT & FTMRH_FSTAT_ACCERR_MASK) != 0){

  FTMRH->FSTAT |= FTMRH_FSTAT_ACCERR_MASK;

  }

  if((FTMRH->FSTAT & FTMRH_FSTAT_FPVIOL_MASK) != 0){

  FTMRH->FSTAT |= FTMRH_FSTAT_FPVIOL_MASK;

  }

  __disable_irq();

  WDOG->CNT = 0x02A6;

  WDOG->CNT = 0x80B4;

  __enable_irq();

  return TRUE;

}

bool FlashEraseSector(u32 addr)

{

  u32 saddr;

  if(!FlashPreCheck())return FALSE;

  saddr = addr;

  __disable_irq();

  FTMRH->FCCOBIX = 0;

  FTMRH->FCCOBHI = 0x0a;

  FTMRH->FCCOBLO = (u8)(saddr >> 16);

  FTMRH->FCCOBIX = 1;

  FTMRH->FCCOBHI = (u8)(saddr >> 8);

  FTMRH->FCCOBLO = (u8)(saddr >> 0);

  FTMRH->FSTAT |= FTMRH_FSTAT_CCIF_MASK;

  while((FTMRH->FSTAT & FTMRH_FSTAT_CCIF_MASK) == 0);

  __enable_irq();

  if((FTMRH->FSTAT & FTMRH_FSTAT_MGSTAT_MASK) != 0)return FALSE;

  return TRUE;

}

Is anyone can help me?

[jeremyzhou]

Hi Lei yue,

I'd like to suggest that you could refer to the Flash demo from the sample code of the FRDMKE02Z board at first.

In the Flash demo, there're a lot of flash operation functions, so please refer to it for details and download the sample code through the link as below.

If you have any other questions, please feel free to contact with me.

The link of the sample code:

cache.freescale.com/files/32bit/software/KE02-SC.zip
Have a great day,
Ping

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