Flash security in MK10

[ssarathkumar916]

Hi,

We are using MK10DX256xxx7 controllers. and We use Rowley cross works IDE for programming. 

We want to secure the flash. So We tried to write 0x00 in FSEC register using Knetics_Startup.s file, But it doesn't work. 

kindly let us know the configuration steps.

Thanks,

Sarathkumar S

kinetics_m mk10dx64vlk7‌ #Kinetis Microcontrollers

[ssarathkumar916]

Hi Kerry,

I have attached the screenshot for verifying the hex after flashing.

From the screenshot , it seems like hex generated correctly, but the FSEC register write operation is not happened.

Do we have to set any protection register prior to FSEC register write operation.

please look into the screen shot for better clarification. 

Thanks,

Sarathkumar S

[kerryzhou]

Hi Sarathkumar S,

    From your generated hex file, your FSEC area is modified.

    What the debugger you are using?

   Can you use the JLINK to downloaded it to your chip directly?

   But in the JLINK device, you need to select the ChipPartnumber_<Allow secturity>

  Please try it on your side.

Have a great day,
Kerry

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[ssarathkumar916]

Hi Kerry,

We are using "Rowley cross connect" debugger for flashing. We dont have JLINK debugger.

Is there any way to do flash security with Rowley cross connect ?. Please suggest.

Thanks,

Sarathkumar S

[kerryzhou]

Hi Sarathkumar S,

   I never used the Rowley cross connect debugger, so maybe you need to check this debugger function with the Rowley cross connect debugger side.

   As I know, JLINK, P&E multilink all can secure the kinetis chip.

Have a great day,
Kerry

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[ssarathkumar916]

Hi Kerry,

Okay, We will check it on debugger side.

Thanks for helping us Kerry.

Thanks,

Sarathkumar S

[kerryzhou]

Hi Sarathkumar S,

   Thanks a lot for your understanding.

    If you need any help about the kinetis side, just kindly let me know.

Have a great day,
Kerry

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[kerryzhou]

Hi Sarathkumar S,

   We seldom use Rowley cross works IDE, we normally use the MCUXpresso IDE, IAR or MDK.

   So, we suggest you also use the above three IDE, this is the popular IDE.

    After you modify the FSEC, you can generate the .hex file, then check flash address 0x0_040C, whether it is 0x00 which you defined?

   Just check whether you IDE can generate the correct secured app .HEX file at first.

If you still have question about it, please kindly let me know.
Have a great day,
Kerry

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