Failed to load readback protection status: async task failure

RE: Failed to load readback protection status: async task failure

Amanda Hsieh — Tue, 28 Mar 2023 16:12:44 GMT

Hi,

Don't forget to also provide power to your custom board while using the nrf52833 DK for debugging. If this cannot help, please create a new support case. Thanks.

-Amanda H.

RE: Failed to load readback protection status: async task failure

SheepWool — Tue, 28 Mar 2023 05:11:29 GMT

I have a very simlar issue with my nrf52833 on a custom board. I have no idea why one day debugging on SEGGER Embedded Studio could no longer be performed. As per similar posts on this subject I have tried --recover and -eraseall with similar error messages and the;Failed to load readback protection status: async task failure for id: 1050638938312 msg: [jlink] JLINKARM_DLL_ERROR (Origin: "Error when running operation: protection-get")

on NRF Programmer 3.0.7. Using latest versions of nrffjprog (10.19) and Jlink 7.80c

The chip is running through its program as per normal on power up - I just can't connect to debug. Using the nrf52833 DK for debugging and all had been fine for weeks.

RE: Failed to load readback protection status: async task failure

Amanda Hsieh — Thu, 18 Aug 2022 06:00:49 GMT

Hi,

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

-Amanda

RE: Failed to load readback protection status: async task failure

Vincent Chen — Thu, 18 Aug 2022 01:01:51 GMT

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.

RE: Failed to load readback protection status: async task failure

Amanda Hsieh — Wed, 17 Aug 2022 10:39:46 GMT

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