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Read Hardware Unique Key

Question asked by sumanthbhatt on Jan 13, 2017
Latest reply on Jan 16, 2017 by sumanthbhatt

Hi, 

   I'm using BF707 based BLIP board for my current project, and I want to read Hardware Unique Key (huk) present in OTP Memory area.

 

I'm using APIs present in cdefBF70x_rom.h to read the HUK. In particular,  res=adi_rom_otp_get_data(huk,0,8); is the line of code I'm using to read 8 32-bit data into the array variable huk.

 

I'm receiving the following error when I'm emulating :

A non-recoverable error or exception has occurred.
Description: Attempted to use a Supervisor register or instruction from User mode (Exception with EXCAUSE=0x2E).
General Type: UnhandledException
Specific Type: SupervisorResource
Error PC: 0x04003ad2

 

I also tried setting SACC bit in app_startup.s file so that the application enters main() in supervisory mode.

I'm still receiving the error.

 

Let me know how to debug this. I'll furnish further information if required.

 

Regards,

Sumanth

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