Power failure while flashing - can't access the chip now... :(

[eyalasko]

Hello,

Power failure while flashing an nRF52840 based platform (flashed through nRF52840DK) left the unit not accessible.

Any attempt to flash it, erase it or recover it ends with an error.

e.g. -

I've attached log.log if this can assist..

(nRF52840, NCS2.70)

Thanks for any advice.

Fullscreen 0552.log.log Download

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[2025-Mar-14 21:10:22] [debug] --------------------------------------------------------------------------------

[2025-Mar-14 21:10:22] [debug] C:\Program Files\Nordic Semiconductor\nrf-command-line-tools\bin\nrfjprog.exe --program c:\devtools\nordic\ncs\projects\west-workspace-270\application\build_cortex1_a0_debug\zephyr\zephyr.hex --chiperase --verify -f NRF52 --snr 1050286816 --log

[2025-Mar-14 21:10:22] [debug] nrfjprog version 10.24.2 external

[2025-Mar-14 21:10:22] [debug] --------------------------------------------------------------------------------

[2025-Mar-14 21:10:22] [ info] Load library at C:\Program Files\Nordic Semiconductor\nrf-command-line-tools\bin\nrfjprog.dll.

[2025-Mar-14 21:10:22] [ info] Library loaded, loading member functions.

[2025-Mar-14 21:10:22] [ info] Member functions succesfully loaded.

[2025-Mar-14 21:10:22] [debug] [ Client] - open

[2025-Mar-14 21:10:22] [debug] [ Client] - start

[2025-Mar-14 21:10:22] [ info] [ Client] - stdout: Jlinkarm nRF Worker ready. Handling sequence 6d149109-24d4-4229-8f84-5a30fb802e97.

[2025-Mar-14 21:10:22] [trace] [ Client] - Command open executed for 54 milliseconds with result 0

[2025-Mar-14 21:10:22] [debug] [ Client] - config

[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - Logger sink registered in Segger backend logger

[2025-Mar-14 21:10:22] [debug] [ JLink] - Logger sink registered in JLink logger

[2025-Mar-14 21:10:22] [debug] [ nRF52] - open

[2025-Mar-14 21:10:22] [debug] [ nRF52] - just_check_family

[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - open_dll

[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - No J-Link DLL path was provided. Attempting to auto detect.

XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

[2025-Mar-14 21:10:22] [debug] --------------------------------------------------------------------------------
[2025-Mar-14 21:10:22] [debug] C:\Program Files\Nordic Semiconductor\nrf-command-line-tools\bin\nrfjprog.exe --program c:\devtools\nordic\ncs\projects\west-workspace-270\application\build_cortex1_a0_debug\zephyr\zephyr.hex --chiperase --verify -f NRF52 --snr 1050286816 --log 
[2025-Mar-14 21:10:22] [debug] nrfjprog version 10.24.2 external
[2025-Mar-14 21:10:22] [debug] --------------------------------------------------------------------------------
[2025-Mar-14 21:10:22] [ info] Load library at C:\Program Files\Nordic Semiconductor\nrf-command-line-tools\bin\nrfjprog.dll.
[2025-Mar-14 21:10:22] [ info] Library loaded, loading member functions.
[2025-Mar-14 21:10:22] [ info] Member functions succesfully loaded.
[2025-Mar-14 21:10:22] [debug] [ Client] - open
[2025-Mar-14 21:10:22] [debug] [ Client] - start
[2025-Mar-14 21:10:22] [ info] [ Client] - stdout: Jlinkarm nRF Worker ready. Handling sequence 6d149109-24d4-4229-8f84-5a30fb802e97.

[2025-Mar-14 21:10:22] [trace] [ Client] - Command open executed for 54 milliseconds with result 0
[2025-Mar-14 21:10:22] [debug] [ Client] - config
[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - Logger sink registered in Segger backend logger
[2025-Mar-14 21:10:22] [debug] [  JLink] - Logger sink registered in JLink logger
[2025-Mar-14 21:10:22] [debug] [  nRF52] - open
[2025-Mar-14 21:10:22] [debug] [  nRF52] - just_check_family
[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - open_dll
[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - No J-Link DLL path was provided. Attempting to auto detect.
[2025-Mar-14 21:10:22] [ info] [SeggerBackend] - Load library at C:\Program Files\SEGGER\JLink_V794i\JLink_x64.dll.
[2025-Mar-14 21:10:22] [ info] [SeggerBackend] - Library loaded, loading member functions.
[2025-Mar-14 21:10:22] [ info] [SeggerBackend] - Member functions succesfully loaded.
[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - Set batch mode
[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - dll_version
[2025-Mar-14 21:10:22] [ info] [SeggerBackend] - Segger dll version 7.94.i loaded.
[2025-Mar-14 21:10:22] [trace] [ Worker] - Command open executed for 4 milliseconds with result 0
[2025-Mar-14 21:10:22] [trace] [ Client] - Command config executed for 15 milliseconds with result 0
[2025-Mar-14 21:10:22] [debug] [ Client] - enum_emu_snr
[2025-Mar-14 21:10:22] [trace] [ Client] - Command enum_emu_con_info executed for 15 milliseconds with result 0
[2025-Mar-14 21:10:22] [debug] [ Client] - connect_to_emu_with_snr
[2025-Mar-14 21:10:22] [debug] [  nRF52] - config
[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - enum_emu_snr
[2025-Mar-14 21:10:22] [trace] [ Worker] - Command config executed for 3 milliseconds with result 0
[2025-Mar-14 21:10:22] [debug] [  nRF52] - enum_emu_con_info
[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - is_connected_to_emu
[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - enum_emu_con_info
[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - is_connected_to_emu
[2025-Mar-14 21:10:22] [trace] [ Worker] - Command enum_emu_con_info executed for 3 milliseconds with result 0
[2025-Mar-14 21:10:22] [debug] [  nRF52] - connect_to_emu_with_snr
[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - is_connected_to_emu
[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - connect_to_emu_with_snr
[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - is_connected_to_emu
[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - ---just_enum_emu_snr
[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - ---just_get_num_emus
[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - ---just_connect_to_emu_with_snr
[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - ---just_connect_to_emu_without_snr
[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - Segger logging enabled.
[2025-Mar-14 21:10:22] [trace] [  JLink] - Firmware: J-Link OB-nRF5340-NordicSemi compiled Oct 30 2023 12:13:06
[2025-Mar-14 21:10:22] [trace] [  JLink] - Firmware: J-Link OB-nRF5340-NordicSemi compiled Oct 30 2023 12:13:06
[2025-Mar-14 21:10:22] [trace] [  JLink] - Hardware: V1.00
[2025-Mar-14 21:10:22] [trace] [  JLink] - S/N: 1050286816
[2025-Mar-14 21:10:22] [trace] [  JLink] - OEM: SEGGER
[2025-Mar-14 21:10:22] [trace] [  JLink] - Feature(s): RDI, FlashBP, FlashDL, JFlash, GDB
[2025-Mar-14 21:10:22] [trace] [  JLink] - Bootloader: 2021 May 18
[2025-Mar-14 21:10:22] [trace] [  JLink] - USB speed mode: Full speed (12 MBit/s)
[2025-Mar-14 21:10:22] [trace] [  JLink] - TELNET listener socket opened on port 19021
[2025-Mar-14 21:10:22] [trace] [  JLink] - WEBSRV WEBSRV_Init(): Starting webserver thread(s)
[2025-Mar-14 21:10:22] [trace] [  JLink] - WEBSRV Webserver running on local port 19080
[2025-Mar-14 21:10:22] [trace] [  JLink] - Looking for J-Link GUI Server exe at: C:\Program Files\SEGGER\JLink_V794i\JLinkGUIServer.exe 
[2025-Mar-14 21:10:22] [trace] [  JLink] - Forking J-Link GUI Server: C:\Program Files\SEGGER\JLink_V794i\JLinkGUIServer.exe 
[2025-Mar-14 21:10:22] [trace] [ Client] - Command connect_to_emu_with_snr executed for 79 milliseconds with result 0
[2025-Mar-14 21:10:22] [debug] [ Client] - read_connected_emu_snr
[2025-Mar-14 21:10:22] [trace] [  JLink] - J-Link GUI Server info: "J-Link GUI server V7.94i " 
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 49.189ms returns "O.K."  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_Lock()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_ExecCommand("SetRestartOnClose = 0", ...).   
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.001ms returns 0x01  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_ExecCommand("DisableFlashDL", ...).   
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.000ms returns 0x00  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_ExecCommand("ExcludeFlashCacheRange 0x0-0xFFFFFFFF", ...).   
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.002ms returns 0x00  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_SetHookUnsecureDialog  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_SetHookUnsecureDialog(...)
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.008ms returns 0  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_TIF_Select(JLINKARM_TIF_SWD)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.946ms returns 0x00  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_GetSpeedInfo()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - 128000000 Hz / n, n >= 64
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.018ms  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - Connected emulator supports SWD speeds up to 2000kHz
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_SetSpeed(2000)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.168ms  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_GetSpeed()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.002ms returns 2000  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - SWD clock set to 2000kHz
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_GetSN()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.002ms returns 1050286816  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.003ms  
[2025-Mar-14 21:10:22] [debug] [  nRF52] - read_device_family
[2025-Mar-14 21:10:22] [trace] [ Worker] - Command connect_to_emu_with_snr executed for 69 milliseconds with result 0
[2025-Mar-14 21:10:22] [debug] [  nRF52] - read_connected_emu_snr
[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - is_connected_to_emu
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_IsOpen()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.017ms returns 0x01  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [ Client] - Command read_connected_emu_snr executed for 0 milliseconds with result 0
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_Lock()  
[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - read_connected_emu_snr
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.011ms  
[2025-Mar-14 21:10:22] [trace] [ Worker] - Command read_connected_emu_snr executed for 0 milliseconds with result 0
[2025-Mar-14 21:10:22] [debug] [ Client] - read_device_info
[2025-Mar-14 21:10:22] [debug] [  nRF52] - read_device_info
[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - is_connected_to_emu
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_IsOpen()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.002ms returns 0x01  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_Lock()  
[2025-Mar-14 21:10:22] [debug] [  nRF52] - Just_read_device_version
[2025-Mar-14 21:10:22] [debug] [  nRF52] - Just_readback_status
[2025-Mar-14 21:10:22] [debug] [  nRF52] - Just_is_ctrl_ap_available
[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - read_access_port_register
[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - ---just_read_access_port_register
[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - coresight_configure
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_GetHWStatus(...)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.215ms returns 0  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_Configure()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 102.150ms returns 0  
[2025-Mar-14 21:10:22] [error] [ Client] - Encountered error -102: Command read_device_info executed for 140 milliseconds with result -102
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [warning] Failed to read device info. Attempting to complete command anyways.
[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - read_debug_port_idr
[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - read_debug_port_register
[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - ---just_read_debug_port_register
[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - ---just_select_debug_port_register
[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - Select AP 255, DP Bank 0, AP Bank 255
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x00000000)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.796ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - ---just_abort_debug_action
[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - Attempting to clear any configuration errors in debug port before closing connection. 
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.686ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.543ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.546ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.532ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.564ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.541ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x00000000)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.506ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [debug] [ Client] - read_memory_descriptors
[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - ---just_abort_debug_action
[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - Attempting to clear any configuration errors in debug port before closing connection. 
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.501ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.541ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.503ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.502ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.502ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.486ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x00000000)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.495ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - ---just_abort_debug_action
[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - Attempting to clear any configuration errors in debug port before closing connection. 
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.524ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.526ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.557ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.499ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.585ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.487ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x00000000)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.552ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - ---just_abort_debug_action
[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - Attempting to clear any configuration errors in debug port before closing connection. 
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.498ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.541ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.510ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.540ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.489ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.485ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x00000000)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.532ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - ---just_abort_debug_action
[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - Attempting to clear any configuration errors in debug port before closing connection. 
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.469ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.550ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.504ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.516ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.491ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.560ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x00000000)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.560ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - ---just_abort_debug_action
[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - Attempting to clear any configuration errors in debug port before closing connection. 
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.508ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.515ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.721ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.545ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.569ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.554ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.042ms  
[2025-Mar-14 21:10:22] [error] [ Worker] - An unknown error.
[2025-Mar-14 21:10:22] [trace] [ Worker] - Command read_device_info executed for 126 milliseconds with result -102
[2025-Mar-14 21:10:22] [debug] [  nRF52] - read_memory_descriptors
[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - is_connected_to_emu
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_IsOpen()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.014ms returns 0x01  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_Lock()  
[2025-Mar-14 21:10:22] [debug] [  nRF52] - Just_read_memory_descriptors
[2025-Mar-14 21:10:22] [debug] [  nRF52] - Just_readback_status
[2025-Mar-14 21:10:22] [debug] [  nRF52] - Just_is_ctrl_ap_available
[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - read_access_port_register
[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - ---just_read_access_port_register
[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - ---just_is_debug_region_powered
[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - ---just_read_debug_port_register
[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - ---just_select_debug_port_register
[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - Select AP 255, DP Bank 0, AP Bank 255
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x00000000)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.838ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - ---just_abort_debug_action
[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - Attempting to clear any configuration errors in debug port before closing connection. 
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.569ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.500ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.498ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.518ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.518ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.490ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x00000000)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.497ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - ---just_abort_debug_action
[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - Attempting to clear any configuration errors in debug port before closing connection. 
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.514ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.560ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.491ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.527ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.517ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.517ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x00000000)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.528ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - ---just_abort_debug_action
[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - Attempting to clear any configuration errors in debug port before closing connection. 
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.497ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.556ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.488ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.537ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.518ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.561ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x00000000)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.522ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - ---just_abort_debug_action
[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - Attempting to clear any configuration errors in debug port before closing connection. 
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.529ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.518ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.522ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.576ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [error] [ Client] - Encountered error -102: Command read_memory_descriptors executed for 31 milliseconds with result -102
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.629ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.544ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x00000000)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.522ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - ---just_abort_debug_action
[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - Attempting to clear any configuration errors in debug port before closing connection. 
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.564ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.557ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.594ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.506ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.525ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.614ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x00000000)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.690ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - ---just_abort_debug_action
[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - Attempting to clear any configuration errors in debug port before closing connection. 
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.665ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.525ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.495ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.470ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.500ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.555ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.040ms  
[2025-Mar-14 21:10:22] [error] [ Worker] - An unknown error.
[2025-Mar-14 21:10:22] [trace] [ Worker] - Command read_memory_descriptors executed for 24 milliseconds with result -102
[2025-Mar-14 21:10:22] [debug] [  nRF52] - close
[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - is_connected_to_emu
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_IsOpen()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.015ms returns 0x01  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_Lock()  
[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - close
[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - disconnect_from_emu
[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - ---just_disconnect_from_emu
[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - is_connected_to_device
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_IsConnected()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.002ms returns FALSE  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - ---just_is_debug_region_powered
[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - ---just_read_debug_port_register
[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - ---just_select_debug_port_register
[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - Select AP 255, DP Bank 0, AP Bank 255
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x00000000)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.684ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - ---just_abort_debug_action
[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - Attempting to clear any configuration errors in debug port before closing connection. 
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.606ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.547ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.529ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.484ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.490ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.479ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x00000000)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.530ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - ---just_abort_debug_action
[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - Attempting to clear any configuration errors in debug port before closing connection. 
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.537ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.506ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.541ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.642ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.559ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.514ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x00000000)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.503ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - ---just_abort_debug_action
[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - Attempting to clear any configuration errors in debug port before closing connection. 
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.511ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.502ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.552ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.615ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.560ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.561ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x00000000)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.538ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - ---just_abort_debug_action
[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - Attempting to clear any configuration errors in debug port before closing connection. 
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.531ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.543ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.479ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.533ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.550ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.576ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x00000000)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.459ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - ---just_abort_debug_action
[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - Attempting to clear any configuration errors in debug port before closing connection. 
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.504ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.491ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.545ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.499ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.569ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.632ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x00000000)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.635ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - ---just_abort_debug_action
[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - Attempting to clear any configuration errors in debug port before closing connection. 
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.648ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.475ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.515ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.520ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.518ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.607ms returns -1  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_HasError()  
[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - Ignore exception An unknown error.
[2025-Mar-14 21:10:22] [trace] [  JLink] - - 0.064ms  
[2025-Mar-14 21:10:22] [trace] [  JLink] - JLINK_Close()  
[2025-Mar-14 21:10:22] [debug] [SeggerBackend] - Segger Backend closed.
[2025-Mar-14 21:10:22] [debug] [  nRF52] - nRF family DLL closed
[2025-Mar-14 21:10:22] [trace] [ Client] - Command close executed for 78 milliseconds with result 0
[2025-Mar-14 21:10:22] [debug] [ Client] - terminate
[2025-Mar-14 21:10:22] [trace] [ Client] - Command terminate executed for 0 milliseconds with result 0
[2025-Mar-14 21:10:22] [trace] [ Worker] - Command close executed for 63 milliseconds with result 0
[2025-Mar-14 21:10:22] [trace] [ Worker] - Command terminate executed for 0 milliseconds with result 0
[2025-Mar-14 21:10:22] [trace] [ Worker] - Executed 9 commands for 292 milliseconds
[2025-Mar-14 21:10:22] [debug] [ Client] - Worker process exited with code: 0
[2025-Mar-14 21:10:22] [debug] [ Client] - Worker process exited with code: 0
[2025-Mar-14 21:10:22] [debug] [ Client] - Child process terminated with result 0
[2025-Mar-14 21:10:22] [trace] [ Client] - Executed 9 commands for 412 milliseconds
[2025-Mar-14 21:10:22] [debug] [ Client] - terminate

[Simonr]

Hi

Can you share more on what exactly happened with this initial "power failure during flashing"? If the power was cut in the middle of flashing the device it might be that the device is in a reset loop, meaning that you have a very small window to recover it between resets. If that's the case, your best chance is to make a script that just continuously tries to do nrfjprog --recover, and hope you hit the right spot.

The error message -102 points to there being an issue connecting to the board with the debugger, so that also checks out with this hypothesis. What voltage is the external board supplied with here? The nRF52840 DK supports 3V supply voltages.

Best regards,

Simon