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  • Case ID: 293950
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Failed to load readback protection status: async task failure

Vincent Chen

I am using nRF52833 on a custom board and trying to use J-link to connect the IC with SWD.

But when I opened the programmer to connect my device, it got this error log:

And I tried to use nRF command line and type "nrfjprog --recover" and it will proceed successfully.

But when I type in "nrfjprog --eraseall", it got this error:

 

C:\Users\u10166>nrfjprog --eraseall --log
[error]: [SeggerBackend] - JLinkARM.dll reported "-1", "An unknown error.".

[error]: [SeggerBackend] - JLinkARM.dll reported "-1", "An unknown error.".

[error]: [SeggerBackend] - JLinkARM.dll reported "-1", "An unknown error.".

[error]: [SeggerBackend] - JLinkARM.dll reported "-1", "An unknown error.".
[error]: [SeggerBackend] - JLinkARM.dll reported "-1", "An unknown error.".
[error]: [SeggerBackend] - JLinkARM.dll ReadMemU32 detected a read error 1.
[error]: [SeggerBackend] - This typically indicates the read was blocked by a memory protection mechanism.
[error]: [SeggerBackend] - JLinkARM.dll reported "-1", "An unknown error.".
[error]: [SeggerBackend] - JLinkARM.dll reported "-1", "An unknown error.".
[error]: [SeggerBackend] - JLinkARM.dll reported "-1", "An unknown error.".
[error]: [SeggerBackend] - JLinkARM.dll reported "-1", "An unknown error.".
[error]: [SeggerBackend] - JLinkARM.dll ReadMemU32 detected a read error 1.
[error]: [SeggerBackend] - This typically indicates the read was blocked by a memory protection mechanism.
[error]: [SeggerBackend] - JLinkARM.dll reported "-1", "An unknown error.".
[error]: [SeggerBackend] - JLinkARM.dll reported "-1", "An unknown error.".
[error]: [SeggerBackend] - JLinkARM.dll reported "-1", "An unknown error.".
[error]: [SeggerBackend] - JLinkARM.dll reported "-1", "An unknown error.".
[error]: [SeggerBackend] - JLinkARM.dll reported "-1", "An unknown error.".
[error]: [SeggerBackend] - JLinkARM.dll reported "-1", "An unknown error.".
[error]: [SeggerBackend] - JLinkARM.dll reported "-1", "An unknown error.".
[error]: [SeggerBackend] - JLinkARM.dll reported "-1", "An unknown error.".
[error]: [SeggerBackend] - JLinkARM.dll ReadMemU32 detected a read error 1.
[error]: [SeggerBackend] - This typically indicates the read was blocked by a memory protection mechanism.
[error]: [SeggerBackend] - JLinkARM.dll reported "-1", "An unknown error.".
[error]: [SeggerBackend] - JLinkARM.dll reported "-1", "An unknown error.".
[error]: [SeggerBackend] - JLinkARM.dll reported "-1", "An unknown error.".
[error]: [SeggerBackend] - JLinkARM.dll reported "-1", "An unknown error.".
[error]: [SeggerBackend] - JLinkARM.dll reported "-1", "An unknown error.".
[error]: [SeggerBackend] - JLinkARM.dll reported "-1", "An unknown error.".
[error]: [SeggerBackend] - JLinkARM.dll reported "-1", "An unknown error.".
[error]: [SeggerBackend] - JLinkARM.dll reported "-1", "An unknown error.".
[error]: [SeggerBackend] - JLinkARM.dll reported "-1", "An unknown error.".
[error]: [SeggerBackend] - JLinkARM.dll reported "-1", "An unknown error.".
[error]: [SeggerBackend] - JLinkARM.dll reported "-1", "An unknown error.".
ERROR: JLinkARM DLL reported an error. Try again. If error condition
ERROR: persists, run the same command again with argument --log, contact Nordic
ERROR: Semiconductor and provide the generated log.log file to them.

Do someone know why this is happened?

Parents
  • 0

    Hi Vincent, 

    From the log:

    [error]: [SeggerBackend] - This typically indicates the read was blocked by a memory protection mechanism.

    Since the protection mechanism is enabled, that means you need to execute "nrfjprog --recover" to disable the memory protection mechanism before erasing ("nrfjprog --recover"). 

    See the nrfjprog commands description:

    --recover Erases all user flash memory and disables the readback protection mechanism if enabled.
    --eraseall Erases all user available program flash memory and the UICR page. Can be combined with the --qspieraseall operation.
    Note the following limitation:
    • For nRF51 devices with a pre-programmed SoftDevice, only the user available code flash and UICR will be erased.

    Regards,
    Amanda

  • 0 in reply to Amanda Hsieh

    Thank you.

    But I tried "nrfjprog --recover" and it still have the memory protection.

    C:\Users\u10166>nrfjprog --recover
Recovering device. This operation might take 30s.
Erasing user code and UICR flash areas.

C:\Users\u10166>nrfjprog --eraseall --log
[error]: [SeggerBackend] - JLinkARM.dll reported "-1", "An unknown error.".

[error]: [SeggerBackend] - JLinkARM.dll reported "-1", "An unknown error.".

[error]: [SeggerBackend] - JLinkARM.dll reported "-1", "An unknown error.".

[error]: [SeggerBackend] - JLinkARM.dll reported "-1", "An unknown error.".
[error]: [SeggerBackend] - JLinkARM.dll reported "-1", "An unknown error.".
[error]: [SeggerBackend] - JLinkARM.dll reported "-1", "An unknown error.".
[error]: [SeggerBackend] - JLinkARM.dll ReadMemU32 detected a read error 1.
[error]: [SeggerBackend] - This typically indicates the read was blocked by a memory protection mechanism.
[error]: [SeggerBackend] - JLinkARM.dll ReadMemU32 detected a read error 1.
[error]: [SeggerBackend] - This typically indicates the read was blocked by a memory protection mechanism.
[error]: [SeggerBackend] - JLinkARM.dll reported "-1", "An unknown error.".
[error]: [SeggerBackend] - JLinkARM.dll reported "-1", "An unknown error.".
[error]: [SeggerBackend] - JLinkARM.dll reported "-1", "An unknown error.".
Failed to read device memories.
[error]: [SeggerBackend] - JLinkARM.dll ReadMemU32 detected a read error 1.
[error]: [SeggerBackend] - This typically indicates the read was blocked by a memory protection mechanism.
[error]: [SeggerBackend] - JLinkARM.dll reported "-1", "An unknown error.".
[error]: [SeggerBackend] - JLinkARM.dll reported "-1", "An unknown error.".
[error]: [SeggerBackend] - JLinkARM.dll reported "-1", "An unknown error.".
[error]: [SeggerBackend] - JLinkARM.dll reported "-1", "An unknown error.".
[error]: [SeggerBackend] - JLinkARM.dll reported "-1", "An unknown error.".
[error]: [  nRF52] - Failed when checking readback protect status.
[error]: [SeggerBackend] - JLinkARM.dll reported "-1", "An unknown error.".
[error]: [SeggerBackend] - JLinkARM.dll reported "-1", "An unknown error.".
[error]: [SeggerBackend] - JLinkARM.dll reported "-1", "An unknown error.".
[error]: [SeggerBackend] - JLinkARM.dll reported "-1", "An unknown error.".
[error]: [SeggerBackend] - JLinkARM.dll reported "-1", "An unknown error.".
[error]: [SeggerBackend] - Failed while ensuring debug power was enabled for device connection.
ERROR: JLinkARM DLL reported an error. Try again. If error condition
ERROR: persists, run the same command again with argument --log, contact Nordic
ERROR: Semiconductor and provide the generated log.log file to them.

  • 0 in reply to Vincent Chen

    Hi, 

    What is the command line version (nrfjprog -v) you are using? Please try the latest version.  

    -Amanda

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