topic Re: freedom k22fn in Kinetis Microcontrollers

freedom k22fn

Donsnook — Tue, 11 Nov 2014 22:03:27 GMT

When trying the example flash project the erase sector always return 0x20 why ???

Re: freedom k22fn

Hui_Ma — Thu, 13 Nov 2014 07:40:52 GMT

Hi Don,

The routine will returned the FTFE_FSTAT value, the 0x20 means ACCERR bit is set.

When execute Erase Flash Sector Command, below situation will report ACCERR error:

Wish it helps.
best regards
Ma Hui

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Re: freedom k22fn

Donsnook — Thu, 13 Nov 2014 16:43:29 GMT

I check security state returns 1

I check flash protection registers all return 0xff

tried address 0x0 same result dest = 0

	REG_WRITE(pSSDConfig->ftfxRegBase + FTFx_SSD_FCCOB0_OFFSET, FTFx_ERASE_SECTOR);
	REG_WRITE(pSSDConfig->ftfxRegBase + FTFx_SSD_FCCOB1_OFFSET, GET_BIT_16_23(dest));
	REG_WRITE(pSSDConfig->ftfxRegBase + FTFx_SSD_FCCOB2_OFFSET, GET_BIT_8_15(dest));
	REG_WRITE(pSSDConfig->ftfxRegBase + FTFx_SSD_FCCOB3_OFFSET, GET_BIT_0_7(dest));
	REG_WRITE(pSSDConfig->ftfxRegBase + FTFx_SSD_FSTAT_OFFSET,FTFx_SSD_FSTAT_ERROR_BITS);

Re: freedom k22fn

Donsnook — Thu, 13 Nov 2014 22:03:43 GMT

Ok the issue was that HSMODE was enable had to change to RUN mode

Re: freedom k22fn

Hui_Ma — Mon, 17 Nov 2014 08:40:19 GMT

Hi Don,

The Flash security doesn't affect Flash operation, include erase flash sector.

Wish it helps.
best regards
Ma Hui