FTFE Flash sector command always return ACCERR

jackylau — Fri, 11 Mar 2016 02:58:21 GMT

Hello,

I'm using a Kinetis K61 (MK61FN1M0) and trying to use the FTFE module for boot loading.

I'm able to get Erase Sector and Program Phrase to work, but somehow I spend hours and still couldn't get Flash sector to work (always return ACCERR). I follow through Table 30-53 and verify that my parameters are correct - below is a section of the code that I'm using. I copied the data onto 0x14000000 (the programming acceleration RAM) and if I understand the reference manual correctly, I should be able to flash 4k byte at a time using the Program Sector command.

#define FLASH_PROGRAM_SECTOR 0x0B

#define PROGRAM_SECTOR_INDEX 0x06

LWord FLASH_ProgramSector(LWord destination, LWord size)

{

/* destination must be 128-bit aligned */

unsigned long NumOfDoublePhrase;
/* double phrase align check */

if (destination & 0x0F)

return 0;

NumOfDoublePhrase = size * 8 / 128;

CommandObj.regsLong.fccob3210 = destination;

CommandObj.regs.fccob0 = FLASH_PROGRAM_SECTOR;

CommandObj.regs.fccob4 = (NumOfDoublePhrase & 0xFF00) >> 8;

CommandObj.regs.fccob5 = NumOfDoublePhrase & 0x00FF;

return FLASH_FlashCommandSequence(PROGRAM_SECTOR_INDEX); /* always return ACCERR */

}

/* FLASH_FlashCommandSequenceStart cames from Freescale's Kinetis Serial Bootloader A2295 */

LWord FLASH_FlashCommandSequenceStart(Byte index)

{

Byte* ptrFccobReg = (Byte*)&FLASH_BASE_PTR->FCCOB3;

Byte* ptrCommandObj = (Byte*)&CommandObj;

/* wait till CCIF bit is set */

while(!(FLASH_FSTAT & FLASH_FSTAT_CCIF_MASK)){};

/* clear RDCOLERR & ACCERR & FPVIOL flag in flash status register */

FLASH_FSTAT = FLASH_FSTAT_ACCERR_MASK | FLASH_FSTAT_FPVIOL_MASK | FLASH_FSTAT_RDCOLERR_MASK;

/* load FCCOB registers */

while(index--)

*ptrFccobReg++ = *ptrCommandObj++;

/* launch a command */

FLASH_FSTAT |= FLASH_FSTAT_CCIF_MASK;

/* waiting for the finishing of the command */

while(!(FLASH_FSTAT & FLASH_FSTAT_CCIF_MASK)){};

/* Check error bits */

/* Get flash status register value */

return (FLASH_FSTAT & (FLASH_FSTAT_ACCERR_MASK | FLASH_FSTAT_FPVIOL_MASK | FLASH_FSTAT_MGSTAT0_MASK));

}

Thank you for your help!

Re: FTFE Flash sector command always return ACCERR

jeremyzhou — Mon, 14 Mar 2016 08:21:35 GMT

Two options:

1. You can use the FLASH_ProgramSectionByPhrases() fuction to program the Flash which is provided by AN2295 demo code too.

2. I'd also like to suggest that you can use use the C90TFS flash driver which include a quite of flash functions, and you can use these functions directly.

C90TFS flash driver:cache.freescale.com/files/32bit/software/C90TFS_FLASH_DRIVER.exe?fromsite=zh-Hans

Hope it helps.
Have a great day,
Ping

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topic Re: FTFE Flash sector command always return ACCERR in Kinetis Microcontrollers

FTFE Flash sector command always return ACCERR

Re: FTFE Flash sector command always return ACCERR