Error -21 during recovery on nRF52840

[hwagner]

I have an nRF52840 that is on an Ezurio BL654 module that I have programmed dozens of times during development.  Something happened during a recent programming event that caused the nRF52840 to stop responding.  Appears to be not running code but not in reset either, sort of locked.  Not responding very well to SWD programming or recovery and doesn't seem to be able to be erased, programmed again or recovered. I am attaching the recovery log from nrfjprog.  The error it gives back on the cmd line is error -21, details in the log.  BTW, the code is mcuboot + Zephyr application.  Have had no issues like this on other boards of same design and same firmware and hardware.  This board worked for a long time.  How do I recover?

Fullscreen 1781.log.log Download

[2024-Aug-14 16:22:59] [debug] --------------------------------------------------------------------------------
[2024-Aug-14 16:22:59] [debug] nrfjprog -f NRF52 --recover --force --log 
[2024-Aug-14 16:22:59] [debug] nrfjprog version 10.23.0 external
[2024-Aug-14 16:22:59] [debug] --------------------------------------------------------------------------------
[2024-Aug-14 16:22:59] [ info] Load library at C:\Program Files\Nordic Semiconductor\nrf-command-line-tools\bin\nrfjprog.dll.
[2024-Aug-14 16:22:59] [ info] Library loaded, loading member functions.
[2024-Aug-14 16:22:59] [ info] Member functions succesfully loaded.
[2024-Aug-14 16:22:59] [debug] [ Client] - open
[2024-Aug-14 16:22:59] [debug] [ Client] - start
[2024-Aug-14 16:22:59] [ info] [ Client] - stdout: Jlinkarm nRF Worker ready. Handling sequence b710e1a5-90a2-4309-81b5-1074fe9a05a0.

[2024-Aug-14 16:22:59] [debug] [SeggerBackend] - Logger sink registered in Segger backend logger
[2024-Aug-14 16:22:59] [trace] [ Client] - Command open executed for 41 milliseconds with result 0
[2024-Aug-14 16:22:59] [debug] [  JLink] - Logger sink registered in JLink logger
[2024-Aug-14 16:22:59] [debug] [  nRF52] - open
[2024-Aug-14 16:22:59] [debug] [  nRF52] - just_check_family
[2024-Aug-14 16:22:59] [debug] [SeggerBackend] - open_dll
[2024-Aug-14 16:22:59] [debug] [SeggerBackend] - No J-Link DLL path was provided. Attempting to auto detect.
[2024-Aug-14 16:22:59] [ info] [SeggerBackend] - Load library at C:\Program Files\SEGGER\JLink_V794e\JLink_x64.dll.
[2024-Aug-14 16:22:59] [ info] [SeggerBackend] - Library loaded, loading member functions.
[2024-Aug-14 16:22:59] [ info] [SeggerBackend] - Member functions succesfully loaded.
[2024-Aug-14 16:22:59] [debug] [SeggerBackend] - Set batch mode
[2024-Aug-14 16:22:59] [debug] [SeggerBackend] - dll_version
[2024-Aug-14 16:22:59] [ info] [SeggerBackend] - Segger dll version 7.94.e loaded.
[2024-Aug-14 16:22:59] [trace] [ Worker] - Command open executed for 3 milliseconds with result 0
[2024-Aug-14 16:22:59] [debug] [ Client] - config
[2024-Aug-14 16:22:59] [trace] [ Client] - Command config executed for 14 milliseconds with result 0
[2024-Aug-14 16:22:59] [debug] [ Client] - enum_emu_snr
[2024-Aug-14 16:22:59] [debug] [  nRF52] - config
[2024-Aug-14 16:22:59] [trace] [ Client] - Command enum_emu_con_info executed for 15 milliseconds with result 0
[2024-Aug-14 16:22:59] [debug] [SeggerBackend] - enum_emu_snr
[2024-Aug-14 16:22:59] [trace] [ Worker] - Command config executed for 2 milliseconds with result 0
[2024-Aug-14 16:22:59] [debug] [  nRF52] - enum_emu_con_info
[2024-Aug-14 16:22:59] [debug] [SeggerBackend] - is_connected_to_emu
[2024-Aug-14 16:22:59] [debug] [SeggerBackend] - enum_emu_con_info
[2024-Aug-14 16:22:59] [debug] [SeggerBackend] - is_connected_to_emu
[2024-Aug-14 16:22:59] [trace] [ Worker] - Command enum_emu_con_info executed for 2 milliseconds with result 0
[2024-Aug-14 16:22:59] [debug] [ Client] - connect_to_emu_with_snr
[2024-Aug-14 16:22:59] [debug] [  nRF52] - connect_to_emu_with_snr
[2024-Aug-14 16:22:59] [debug] [SeggerBackend] - is_connected_to_emu
[2024-Aug-14 16:22:59] [debug] [SeggerBackend] - connect_to_emu_with_snr
[2024-Aug-14 16:22:59] [debug] [SeggerBackend] - is_connected_to_emu
[2024-Aug-14 16:22:59] [debug] [SeggerBackend] - ---just_enum_emu_snr
[2024-Aug-14 16:22:59] [debug] [SeggerBackend] - ---just_get_num_emus
[2024-Aug-14 16:22:59] [debug] [SeggerBackend] - ---just_connect_to_emu_with_snr
[2024-Aug-14 16:22:59] [debug] [SeggerBackend] - ---just_connect_to_emu_without_snr
[2024-Aug-14 16:22:59] [debug] [SeggerBackend] - Segger logging enabled.
[2024-Aug-14 16:22:59] [trace] [  JLink] - Firmware: J-Link V9 compiled May  7 2021 16:26:12
[2024-Aug-14 16:22:59] [trace] [ Client] - Command connect_to_emu_with_snr executed for 45 milliseconds with result 0
[2024-Aug-14 16:22:59] [trace] [  JLink] - Firmware: J-Link V9 compiled May  7 2021 16:26:12
[2024-Aug-14 16:22:59] [trace] [  JLink] - Decompressing FW timestamp took 106 us
[2024-Aug-14 16:22:59] [debug] [ Client] - read_connected_emu_snr
[2024-Aug-14 16:22:59] [trace] [  JLink] - Hardware: V9.30
[2024-Aug-14 16:22:59] [trace] [  JLink] - S/N: 609302551
[2024-Aug-14 16:22:59] [trace] [  JLink] - OEM: SEGGER
[2024-Aug-14 16:22:59] [trace] [  JLink] - Feature(s): RDI, FlashBP, FlashDL, JFlash, GDB
[2024-Aug-14 16:22:59] [trace] [  JLink] - Bootloader: (Could not read)
[2024-Aug-14 16:22:59] [trace] [  JLink] - TELNET listener socket opened on port 19021
[2024-Aug-14 16:22:59] [trace] [  JLink] - WEBSRV WEBSRV_Init(): Starting webserver thread(s)
[2024-Aug-14 16:22:59] [trace] [  JLink] - WEBSRV Failed to put socket into listener state (port 19080)
[2024-Aug-14 16:22:59] [trace] [  JLink] - WEBSRV Webserver running on local port 19081
[2024-Aug-14 16:22:59] [trace] [  JLink] - Looking for J-Link GUI Server exe at: C:\Program Files\SEGGER\JLink_V794e\JLinkGUIServer.exe 
[2024-Aug-14 16:22:59] [trace] [  JLink] - Forking J-Link GUI Server: C:\Program Files\SEGGER\JLink_V794e\JLinkGUIServer.exe 
[2024-Aug-14 16:22:59] [trace] [ Client] - Command read_connected_emu_snr executed for 0 milliseconds with result 0
[2024-Aug-14 16:22:59] [debug] [ Client] - recover
[2024-Aug-14 16:22:59] [trace] [  JLink] - J-Link GUI Server info: "J-Link GUI server V7.96m " 
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 23.554ms returns "O.K."  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_Lock()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_ExecCommand("SetRestartOnClose = 0", ...).   
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.002ms returns 0x01  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_ExecCommand("DisableFlashDL", ...).   
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.000ms returns 0x00  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_ExecCommand("ExcludeFlashCacheRange 0x0-0xFFFFFFFF", ...).   
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.004ms returns 0x00  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_SetHookUnsecureDialog  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_SetHookUnsecureDialog(...)
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.009ms returns 0  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_TIF_Select(JLINKARM_TIF_SWD)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.693ms returns 0x00  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_GetSpeedInfo()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - 12000000 Hz / n, n >= 1
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.013ms  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [debug] [SeggerBackend] - Connected emulator supports SWD speeds up to 12000kHz
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_SetSpeed(2000)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.089ms  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_GetSpeed()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.002ms returns 2000  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [debug] [SeggerBackend] - SWD clock set to 2000kHz
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_GetSN()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.002ms returns 609302551  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.004ms  
[2024-Aug-14 16:22:59] [debug] [  nRF52] - read_device_family
[2024-Aug-14 16:22:59] [trace] [ Worker] - Command connect_to_emu_with_snr executed for 43 milliseconds with result 0
[2024-Aug-14 16:22:59] [debug] [  nRF52] - read_connected_emu_snr
[2024-Aug-14 16:22:59] [debug] [SeggerBackend] - is_connected_to_emu
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_IsOpen()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.007ms returns 0x01  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_Lock()  
[2024-Aug-14 16:22:59] [debug] [SeggerBackend] - read_connected_emu_snr
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.007ms  
[2024-Aug-14 16:22:59] [trace] [ Worker] - Command read_connected_emu_snr executed for 0 milliseconds with result 0
[2024-Aug-14 16:22:59] [debug] [  nRF52] - recover
[2024-Aug-14 16:22:59] [debug] [SeggerBackend] - is_connected_to_emu
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_IsOpen()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.004ms returns 0x01  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_Lock()  
[2024-Aug-14 16:22:59] [debug] [SeggerBackend] - is_connected_to_emu
[2024-Aug-14 16:22:59] [debug] [  nRF52] - Just_recover
[2024-Aug-14 16:22:59] [debug] [  nRF52] - Just_is_ctrl_ap_available
[2024-Aug-14 16:22:59] [debug] [SeggerBackend] - read_access_port_register
[2024-Aug-14 16:22:59] [debug] [SeggerBackend] - ---just_read_access_port_register
[2024-Aug-14 16:22:59] [debug] [SeggerBackend] - coresight_configure
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_GetHWStatus(...)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.126ms returns 0  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_CORESIGHT_Configure()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 99.942ms returns 0  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [debug] [SeggerBackend] - read_debug_port_idr
[2024-Aug-14 16:22:59] [debug] [SeggerBackend] - read_debug_port_register
[2024-Aug-14 16:22:59] [debug] [SeggerBackend] - ---just_read_debug_port_register
[2024-Aug-14 16:22:59] [debug] [SeggerBackend] - ---just_select_debug_port_register
[2024-Aug-14 16:22:59] [debug] [SeggerBackend] - Select AP 255, DP Bank 0, AP Bank 255
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x00000000)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.754ms returns -1  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [debug] [SeggerBackend] - ---just_abort_debug_action
[2024-Aug-14 16:22:59] [debug] [SeggerBackend] - Attempting to clear any configuration errors in debug port before closing connection. 
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.573ms returns -1  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.617ms returns -1  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.615ms returns -1  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.465ms returns -1  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.515ms returns -1  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.554ms returns -1  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x00000000)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.554ms returns -1  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [debug] [SeggerBackend] - ---just_abort_debug_action
[2024-Aug-14 16:22:59] [debug] [SeggerBackend] - Attempting to clear any configuration errors in debug port before closing connection. 
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.548ms returns -1  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.517ms returns -1  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.522ms returns -1  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.496ms returns -1  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.472ms returns -1  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.490ms returns -1  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x00000000)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.490ms returns -1  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [debug] [SeggerBackend] - ---just_abort_debug_action
[2024-Aug-14 16:22:59] [debug] [SeggerBackend] - Attempting to clear any configuration errors in debug port before closing connection. 
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.503ms returns -1  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Aug-14 16:22:59] [error] [ Client] - Encountered error -21: Command recover executed for 124 milliseconds with result -21
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.603ms returns -1  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.652ms returns -1  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.588ms returns -1  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.557ms returns -1  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.498ms returns -1  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x00000000)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.493ms returns -1  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [debug] [SeggerBackend] - ---just_abort_debug_action
[2024-Aug-14 16:22:59] [debug] [SeggerBackend] - Attempting to clear any configuration errors in debug port before closing connection. 
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.486ms returns -1  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.467ms returns -1  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.459ms returns -1  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.483ms returns -1  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.461ms returns -1  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.482ms returns -1  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x00000000)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.495ms returns -1  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [debug] [SeggerBackend] - ---just_abort_debug_action
[2024-Aug-14 16:22:59] [debug] [SeggerBackend] - Attempting to clear any configuration errors in debug port before closing connection. 
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.496ms returns -1  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.488ms returns -1  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.485ms returns -1  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.490ms returns -1  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.448ms returns -1  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.490ms returns -1  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x00000000)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.457ms returns -1  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [debug] [SeggerBackend] - ---just_abort_debug_action
[2024-Aug-14 16:22:59] [debug] [SeggerBackend] - Attempting to clear any configuration errors in debug port before closing connection. 
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.483ms returns -1  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.484ms returns -1  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.478ms returns -1  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.483ms returns -1  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.488ms returns -1  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.501ms returns -1  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.060ms  
[2024-Aug-14 16:22:59] [error] [ Worker] - An unknown error.
[2024-Aug-14 16:22:59] [trace] [ Worker] - Command recover executed for 122 milliseconds with result -21
[2024-Aug-14 16:22:59] [debug] [  nRF52] - close
[2024-Aug-14 16:22:59] [debug] [SeggerBackend] - is_connected_to_emu
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_IsOpen()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.024ms returns 0x01  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_Lock()  
[2024-Aug-14 16:22:59] [debug] [SeggerBackend] - close
[2024-Aug-14 16:22:59] [debug] [SeggerBackend] - disconnect_from_emu
[2024-Aug-14 16:22:59] [debug] [SeggerBackend] - ---just_disconnect_from_emu
[2024-Aug-14 16:22:59] [debug] [SeggerBackend] - is_connected_to_device
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_IsConnected()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.003ms returns FALSE  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [debug] [SeggerBackend] - ---just_is_debug_region_powered
[2024-Aug-14 16:22:59] [debug] [SeggerBackend] - ---just_read_debug_port_register
[2024-Aug-14 16:22:59] [debug] [SeggerBackend] - ---just_select_debug_port_register
[2024-Aug-14 16:22:59] [debug] [SeggerBackend] - Select AP 255, DP Bank 0, AP Bank 255
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x00000000)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.561ms returns -1  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [debug] [SeggerBackend] - ---just_abort_debug_action
[2024-Aug-14 16:22:59] [debug] [SeggerBackend] - Attempting to clear any configuration errors in debug port before closing connection. 
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.578ms returns -1  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.488ms returns -1  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.550ms returns -1  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.494ms returns -1  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.579ms returns -1  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.468ms returns -1  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x00000000)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.488ms returns -1  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [debug] [SeggerBackend] - ---just_abort_debug_action
[2024-Aug-14 16:22:59] [debug] [SeggerBackend] - Attempting to clear any configuration errors in debug port before closing connection. 
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.478ms returns -1  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.480ms returns -1  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.488ms returns -1  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.475ms returns -1  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.482ms returns -1  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.559ms returns -1  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x00000000)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.478ms returns -1  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [debug] [SeggerBackend] - ---just_abort_debug_action
[2024-Aug-14 16:22:59] [debug] [SeggerBackend] - Attempting to clear any configuration errors in debug port before closing connection. 
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.462ms returns -1  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.500ms returns -1  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.477ms returns -1  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.485ms returns -1  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.487ms returns -1  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.510ms returns -1  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x00000000)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.571ms returns -1  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [debug] [SeggerBackend] - ---just_abort_debug_action
[2024-Aug-14 16:22:59] [debug] [SeggerBackend] - Attempting to clear any configuration errors in debug port before closing connection. 
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.515ms returns -1  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.467ms returns -1  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.452ms returns -1  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.488ms returns -1  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.463ms returns -1  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.492ms returns -1  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x00000000)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.535ms returns -1  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [debug] [SeggerBackend] - ---just_abort_debug_action
[2024-Aug-14 16:22:59] [debug] [SeggerBackend] - Attempting to clear any configuration errors in debug port before closing connection. 
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.464ms returns -1  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.451ms returns -1  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.494ms returns -1  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.460ms returns -1  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.458ms returns -1  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.441ms returns -1  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x00000000)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.518ms returns -1  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [debug] [SeggerBackend] - ---just_abort_debug_action
[2024-Aug-14 16:22:59] [debug] [SeggerBackend] - Attempting to clear any configuration errors in debug port before closing connection. 
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.487ms returns -1  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.484ms returns -1  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.446ms returns -1  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.488ms returns -1  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.486ms returns -1  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.482ms returns -1  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_HasError()  
[2024-Aug-14 16:22:59] [debug] [SeggerBackend] - Ignore exception An unknown error.
[2024-Aug-14 16:22:59] [trace] [  JLink] - - 0.026ms  
[2024-Aug-14 16:22:59] [trace] [  JLink] - JLINK_Close()  
[2024-Aug-14 16:22:59] [debug] [SeggerBackend] - Segger Backend closed.
[2024-Aug-14 16:22:59] [debug] [  nRF52] - nRF family DLL closed
[2024-Aug-14 16:22:59] [trace] [ Worker] - Command close executed for 62 milliseconds with result 0
[2024-Aug-14 16:22:59] [trace] [ Client] - Command close executed for 78 milliseconds with result 0
[2024-Aug-14 16:22:59] [debug] [ Client] - terminate
[2024-Aug-14 16:22:59] [trace] [ Client] - Command terminate executed for 0 milliseconds with result 0
[2024-Aug-14 16:22:59] [trace] [ Worker] - Command terminate executed for 0 milliseconds with result 0
[2024-Aug-14 16:22:59] [trace] [ Worker] - Executed 8 commands for 234 milliseconds
[2024-Aug-14 16:22:59] [debug] [ Client] - Worker process exited with code: 0
[2024-Aug-14 16:22:59] [debug] [ Client] - Worker process exited with code: 0
[2024-Aug-14 16:22:59] [debug] [ Client] - Child process terminated with result 0
[2024-Aug-14 16:22:59] [trace] [ Client] - Executed 8 commands for 317 milliseconds
[2024-Aug-14 16:22:59] [debug] [ Client] - terminate

[Amanda Hsieh]

(updated)

How module is powered e.g. Vdd or Vddhv?

Could you use J-Link commander to make sure the device is detected 3.3v?

--

Hi, 

I have forwarded the log to the team and will back when I collect enough information.

Regards,
Amanda H. 

[hwagner]

The device is powered via Vdd.  The voltage was verified as well with a DMM and matches the Vdd voltage on several functional boards of the same design, all within the range of 3.05-3.10 VDC.

[Amanda Hsieh]

Hi, 

The team has concluded that it is likely an issue with the SWD lines/power or something similar since the SWD communication stops at the initial communication with the device.

-Amanda H.

[hwagner]

Could this have happened during the programming process, glitch in signals, ESD, programming error etc?  The device was used for development and has been programmed and reprogrammed many times  but now is no longer accessible via SWD. It worked fine until this happened, I am still able to use my programmer on other boards without issue.

[Amanda Hsieh]

It's probable.