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Hot!ATECC508A for storing 8 bytes of password , not able to write or read

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vijithg
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2020/07/30 21:46:35 (permalink)
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ATECC508A for storing 8 bytes of password , not able to write or read

Hi,
 
In my current project I have to use ATECC508A for storing 8 bytes of password. I did not configure the config zone and not locked too.Data zone also not locked. I tried to write the data zone slot number from 8 to 15 for storing the password. All the attempts I did was a failure.
I am using microchip provided cryptoauth libraries for interaction with ATECC508A. I am using yocto linux as os platform.
Please let me know how can I store 8 bytes of data in ATECC508A chip.Please let me know a procedure.
 
Thanks & Regards
Vijith G Kurup
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    Wulf
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    Re: ATECC508A for storing 8 bytes of password , not able to write or read 2020/09/11 11:43:07 (permalink)
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    Hello Vijith,
     
    > I did not configure the config zone
     
    You cannot write any data before configuring and locking the config zone.
     
    You need to follow these steps:
    * Write configuration zone.
    * Lock configuration zone (cannot be undone!)
    * Write initial data to data+OTP zone
    * Lock data zone (cannot be undone!)
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