How to read/write "Program Once Filed" segment of flash in Kinetis KL26z256 controller?

[harshpatel]

Hello Everyone

I want to read 64 byte "Program Once field" segment of flash in kl26z256xxx4 controller.  I have taken reference of demo example in KSDK library (\KSDK_1.3.0\examples\frdmkl26z\driver_examples\flash\kds). In this demo code there is a function :

uint32_t FlashReadOnce(PFLASH_SSD_CONFIG pSSDConfig,uint8_t recordIndex, uint8_t* pDataArray, uint32_t size, pFLASHCOMMANDSEQUENCE pFlashCommandSequence) in SSD_FTFx.h.

I want to know more about last parameter pFLASHCOMMANDSEQUENCE pFlashCommandSequence.

In demo code this parameter is caculated as follows:

pFlashCommandSequence= (pFLASHCOMMANDSEQUENCE)RelocateFunction((uint32_t)ramFunc , LAUNCH_CMD_SIZE ,(uint32_t)FlashCommandSequence);

So can i use it directly in flashReadOnce function as a last parameter?

Thank you

waiting for your valuable inputs...

[harshpatel]

Hello

By taking your code as reference i can read as well as write "Program once filed".

Also Using KSDK example its also works.

Thank you for your inputs..

Regards,

Harsh

Einfochips

[bobpaddock · Accepted solution]

The attached code is what I use, you should be able to extract what you need from it.

There are some bits missing here like moving the flash command section to RAM that happens at boot.

[harshpatel]

Hi BOB PADDOCK

Thank you for your input

Well i can not find your attachment can you please reattach it?

[bobpaddock]

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