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Raytac MDBT53(nRF5340) custom board SWD not responding after erase

ffenix

Hello,

I am building basic board on nRF5340(based on Raytac MDBT53 module) and after "Erase" operation in nRF Connect Programmer I cannot access chip anymore.

Board schematics are based on the basic example from MDBT53 documentation (see screenshot), except that the board does not have 32.7 kHz crystal, as for start I plan to use an internal oscillator.

When I power up the board for the first time, output voltage from VDD is 1.8V. When I connect nRF52840 DK board as programmer (version 3.0.0, with 5340 as debugger) to SWD with VDD nRF, GND, SWDIO, SCL - I can see the chip, read its content and use SWD normally. I could also use "nrfjprog" to set VREGHOUT to value "4" and got 3V output from VDD.

But after I build "blinky" example with "raytac_mdbt53_db_40_nrf5340_cpuapp" as board without additional/custom board configuration (as pinout, except for LF crystal is the same), drag resulting firmware to the programmer and click "Erase & write" - after Programmer finished the erasing & flashing - the chip is not accessible anymore.

It will output 1.8V from VDD and without changing SWD connection, the nRF52840 DK cannot identify and connect to the chip. Neither nRF Programmer, JLink Commander, nrfjprog nor OpenOCD cannot connect. At this point the board is effectively bricked, and I cannot connect to it through SWD to change UICR or upload another firmware. Seems more like IO problem rather than protections, but the chip becomes unresponsive immidiately after erase & write, without touching SWD connection.

Could this be because of missing LF crystal? And if so - would this solution fix the issue?

Also attached logs from "nrfjprog --recover --log".

Fullscreen 55666.log.log Download 
[2024-Jun-23 11:20:40] [debug] --------------------------------------------------------------------------------
[2024-Jun-23 11:20:40] [debug] nrfjprog --recover --log 
[2024-Jun-23 11:20:40] [debug] nrfjprog version 10.24.2 external
[2024-Jun-23 11:20:40] [debug] --------------------------------------------------------------------------------
[2024-Jun-23 11:20:40] [ info] Load library at /opt/nrf-command-line-tools/lib/libnrfjprogdll.so.
[2024-Jun-23 11:20:40] [ info] Library loaded, loading member functions.
[2024-Jun-23 11:20:40] [ info] Member functions succesfully loaded.
[2024-Jun-23 11:20:40] [debug] [ Client] - open
[2024-Jun-23 11:20:40] [debug] [ Client] - start
[2024-Jun-23 11:20:40] [ info] [ Client] - stdout: Jlinkarm nRF Worker ready. Handling sequence 32b50ec7-0c98-4355-b0bf-7960b23cb922.
[2024-Jun-23 11:20:40] [debug] [SeggerBackend] - Logger sink registered in Segger backend logger
[2024-Jun-23 11:20:40] [debug] [  JLink] - Logger sink registered in JLink logger
[2024-Jun-23 11:20:40] [debug] [  nRFXX] - open
[2024-Jun-23 11:20:40] [debug] [  nRFXX] - just_check_family
[2024-Jun-23 11:20:40] [debug] [SeggerBackend] - open_dll
[2024-Jun-23 11:20:40] [debug] [SeggerBackend] - No J-Link DLL path was provided. Attempting to auto detect.
[2024-Jun-23 11:20:40] [ info] [SeggerBackend] - Load library at /opt/SEGGER/JLink/libjlinkarm.so.7.
[2024-Jun-23 11:20:40] [ info] [SeggerBackend] - Library loaded, loading member functions.
[2024-Jun-23 11:20:40] [ info] [SeggerBackend] - Member functions succesfully loaded.
[2024-Jun-23 11:20:40] [debug] [SeggerBackend] - Set batch mode
[2024-Jun-23 11:20:40] [debug] [SeggerBackend] - dll_version
[2024-Jun-23 11:20:40] [trace] [ Client] - Command open executed for 12 milliseconds with result 0
[2024-Jun-23 11:20:40] [ info] [SeggerBackend] - Segger dll version 7.96.m loaded.
[2024-Jun-23 11:20:40] [trace] [ Worker] - Command open executed for 10 milliseconds with result 0
[2024-Jun-23 11:20:40] [debug] [ Client] - config
[2024-Jun-23 11:20:40] [trace] [ Client] - Command config executed for 5 milliseconds with result 0
[2024-Jun-23 11:20:40] [debug] [ Client] - enum_emu_snr
[2024-Jun-23 11:20:40] [debug] [  nRFXX] - config
[2024-Jun-23 11:20:40] [debug] [SeggerBackend] - enum_emu_snr
[2024-Jun-23 11:20:40] [trace] [ Worker] - Command config executed for 5 milliseconds with result 0
[2024-Jun-23 11:20:40] [debug] [  nRFXX] - enum_emu_con_info
[2024-Jun-23 11:20:40] [debug] [SeggerBackend] - is_connected_to_emu
[2024-Jun-23 11:20:40] [debug] [SeggerBackend] - enum_emu_con_info
[2024-Jun-23 11:20:40] [trace] [ Client] - Command enum_emu_con_info executed for 8 milliseconds with result 0
[2024-Jun-23 11:20:40] [debug] [ Client] - connect_to_emu_with_snr
[2024-Jun-23 11:20:40] [debug] [SeggerBackend] - is_connected_to_emu
[2024-Jun-23 11:20:40] [trace] [ Worker] - Command enum_emu_con_info executed for 8 milliseconds with result 0
[2024-Jun-23 11:20:40] [debug] [  nRFXX] - connect_to_emu_with_snr
[2024-Jun-23 11:20:40] [debug] [SeggerBackend] - is_connected_to_emu
[2024-Jun-23 11:20:40] [debug] [SeggerBackend] - connect_to_emu_with_snr
[2024-Jun-23 11:20:40] [debug] [SeggerBackend] - is_connected_to_emu
[2024-Jun-23 11:20:40] [debug] [SeggerBackend] - ---just_enum_emu_snr
[2024-Jun-23 11:20:40] [debug] [SeggerBackend] - ---just_get_num_emus
[2024-Jun-23 11:20:40] [debug] [SeggerBackend] - ---just_connect_to_emu_with_snr
[2024-Jun-23 11:20:40] [debug] [SeggerBackend] - ---just_connect_to_emu_without_snr
[2024-Jun-23 11:20:40] [debug] [SeggerBackend] - Segger logging enabled.
[2024-Jun-23 11:20:40] [trace] [  JLink] - Firmware: J-Link OB-nRF5340-NordicSemi compiled Apr 11 2024 17:44:26
[2024-Jun-23 11:20:40] [trace] [  JLink] - Firmware: J-Link OB-nRF5340-NordicSemi compiled Apr 11 2024 17:44:26
[2024-Jun-23 11:20:40] [trace] [  JLink] - Hardware: V1.00
[2024-Jun-23 11:20:40] [trace] [  JLink] - S/N: 1050295380
[2024-Jun-23 11:20:40] [trace] [  JLink] - OEM: SEGGER
[2024-Jun-23 11:20:40] [trace] [  JLink] - Feature(s): RDI, FlashBP, FlashDL, JFlash, GDB
[2024-Jun-23 11:20:40] [trace] [  JLink] - Bootloader: 2021 May 18
[2024-Jun-23 11:20:40] [trace] [  JLink] - USB speed mode: Full speed (12 MBit/s)
[2024-Jun-23 11:20:40] [trace] [  JLink] - TELNET listener socket opened on port 19021
[2024-Jun-23 11:20:40] [trace] [  JLink] - WEBSRV WEBSRV_Init(): Starting webserver thread(s)
[2024-Jun-23 11:20:40] [trace] [  JLink] - WEBSRV Webserver running on local port 19080
[2024-Jun-23 11:20:40] [trace] [  JLink] - Looking for J-Link GUI Server exe at: /opt/SEGGER/JLink/JLinkGUIServerExe 
[2024-Jun-23 11:20:40] [trace] [  JLink] - Forking J-Link GUI Server: /opt/SEGGER/JLink/JLinkGUIServerExe 
[2024-Jun-23 11:20:40] [trace] [  JLink] - J-Link GUI Server info: "J-Link GUI server V7.96m " 
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 48.000ms returns "O.K."  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_Lock()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_ExecCommand("SetRestartOnClose = 0", ...).   
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.003ms returns 0x01  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_ExecCommand("DisableFlashDL", ...).   
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.001ms returns 0x00  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_ExecCommand("ExcludeFlashCacheRange 0x0-0xFFFFFFFF", ...).   
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.001ms returns 0x00  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_SetHookUnsecureDialog  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_SetHookUnsecureDialog(...)
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.011ms returns 0  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_TIF_Select(JLINKARM_TIF_SWD)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.361ms returns 0x00  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_GetSpeedInfo()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - 128000000 Hz / n, n >= 64
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.007ms  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [debug] [SeggerBackend] - Connected emulator supports SWD speeds up to 2000kHz
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_SetSpeed(2000)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.085ms  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_GetSpeed()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.002ms returns 2000  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [debug] [SeggerBackend] - SWD clock set to 2000kHz
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_GetSN()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.002ms returns 1050295380  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.003ms  
[2024-Jun-23 11:20:40] [debug] [  nRFXX] - read_device_family
[2024-Jun-23 11:20:40] [debug] [  nRFXX] - read_device_family
[2024-Jun-23 11:20:40] [debug] [SeggerBackend] - is_connected_to_emu
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_IsOpen()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.002ms returns 0x01  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_Lock()  
[2024-Jun-23 11:20:40] [debug] [SeggerBackend] - is_connected_to_emu
[2024-Jun-23 11:20:40] [debug] [SeggerBackend] - read_debug_port_idr
[2024-Jun-23 11:20:40] [debug] [SeggerBackend] - read_debug_port_register
[2024-Jun-23 11:20:40] [debug] [SeggerBackend] - ---just_read_debug_port_register
[2024-Jun-23 11:20:40] [debug] [SeggerBackend] - coresight_configure
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_GetHWStatus(...)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.084ms returns 0  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_CORESIGHT_Configure()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 101.735ms returns 0  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [debug] [SeggerBackend] - read_debug_port_idr
[2024-Jun-23 11:20:40] [debug] [SeggerBackend] - read_debug_port_register
[2024-Jun-23 11:20:40] [debug] [SeggerBackend] - ---just_read_debug_port_register
[2024-Jun-23 11:20:40] [debug] [SeggerBackend] - ---just_select_debug_port_register
[2024-Jun-23 11:20:40] [debug] [SeggerBackend] - Select AP 255, DP Bank 0, AP Bank 255
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x00000000)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.641ms returns -1  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [debug] [SeggerBackend] - ---just_abort_debug_action
[2024-Jun-23 11:20:40] [debug] [SeggerBackend] - Attempting to clear any configuration errors in debug port before closing connection. 
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.631ms returns -1  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.535ms returns -1  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.645ms returns -1  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.643ms returns -1  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.695ms returns -1  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.644ms returns -1  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x00000000)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.636ms returns -1  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [debug] [SeggerBackend] - ---just_abort_debug_action
[2024-Jun-23 11:20:40] [debug] [SeggerBackend] - Attempting to clear any configuration errors in debug port before closing connection. 
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.619ms returns -1  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.628ms returns -1  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.534ms returns -1  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.647ms returns -1  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.629ms returns -1  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.603ms returns -1  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x00000000)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.638ms returns -1  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [debug] [SeggerBackend] - ---just_abort_debug_action
[2024-Jun-23 11:20:40] [debug] [SeggerBackend] - Attempting to clear any configuration errors in debug port before closing connection. 
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.644ms returns -1  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.594ms returns -1  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.577ms returns -1  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.544ms returns -1  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.591ms returns -1  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.545ms returns -1  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x00000000)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.583ms returns -1  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [debug] [SeggerBackend] - ---just_abort_debug_action
[2024-Jun-23 11:20:40] [debug] [SeggerBackend] - Attempting to clear any configuration errors in debug port before closing connection. 
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.662ms returns -1  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.678ms returns -1  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.686ms returns -1  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.610ms returns -1  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.679ms returns -1  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.633ms returns -1  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x00000000)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.635ms returns -1  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [debug] [SeggerBackend] - ---just_abort_debug_action
[2024-Jun-23 11:20:40] [debug] [SeggerBackend] - Attempting to clear any configuration errors in debug port before closing connection. 
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.596ms returns -1  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.634ms returns -1  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.563ms returns -1  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.677ms returns -1  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.604ms returns -1  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.606ms returns -1  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x00000000)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.521ms returns -1  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [debug] [SeggerBackend] - ---just_abort_debug_action
[2024-Jun-23 11:20:40] [debug] [SeggerBackend] - Attempting to clear any configuration errors in debug port before closing connection. 
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.637ms returns -1  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.619ms returns -1  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.634ms returns -1  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.600ms returns -1  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.594ms returns -1  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Jun-23 11:20:40] [error] [ Client] - Encountered error -102: Command connect_to_emu_with_snr executed for 220 milliseconds with result -102
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.543ms returns -1  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.195ms  
[2024-Jun-23 11:20:40] [error] [ Worker] - An unknown error.
[2024-Jun-23 11:20:40] [trace] [ Worker] - Command connect_to_emu_with_snr executed for 220 milliseconds with result -102
[2024-Jun-23 11:20:40] [debug] [  nRFXX] - close
[2024-Jun-23 11:20:40] [debug] [SeggerBackend] - is_connected_to_emu
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_IsOpen()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.010ms returns 0x01  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_Lock()  
[2024-Jun-23 11:20:40] [debug] [SeggerBackend] - close
[2024-Jun-23 11:20:40] [debug] [SeggerBackend] - disconnect_from_emu
[2024-Jun-23 11:20:40] [debug] [SeggerBackend] - ---just_disconnect_from_emu
[2024-Jun-23 11:20:40] [debug] [SeggerBackend] - is_connected_to_device
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_IsConnected()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.007ms returns FALSE  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [debug] [SeggerBackend] - ---just_is_debug_region_powered
[2024-Jun-23 11:20:40] [debug] [SeggerBackend] - ---just_read_debug_port_register
[2024-Jun-23 11:20:40] [debug] [SeggerBackend] - ---just_select_debug_port_register
[2024-Jun-23 11:20:40] [debug] [SeggerBackend] - Select AP 255, DP Bank 0, AP Bank 255
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x00000000)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.690ms returns -1  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [debug] [SeggerBackend] - ---just_abort_debug_action
[2024-Jun-23 11:20:40] [debug] [SeggerBackend] - Attempting to clear any configuration errors in debug port before closing connection. 
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.714ms returns -1  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.713ms returns -1  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.697ms returns -1  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.686ms returns -1  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.613ms returns -1  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.604ms returns -1  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x00000000)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.618ms returns -1  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [debug] [SeggerBackend] - ---just_abort_debug_action
[2024-Jun-23 11:20:40] [debug] [SeggerBackend] - Attempting to clear any configuration errors in debug port before closing connection. 
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.640ms returns -1  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.627ms returns -1  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.622ms returns -1  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.527ms returns -1  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.498ms returns -1  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.491ms returns -1  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x00000000)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.585ms returns -1  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [debug] [SeggerBackend] - ---just_abort_debug_action
[2024-Jun-23 11:20:40] [debug] [SeggerBackend] - Attempting to clear any configuration errors in debug port before closing connection. 
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.517ms returns -1  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.545ms returns -1  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.545ms returns -1  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.567ms returns -1  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.569ms returns -1  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.542ms returns -1  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x00000000)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.600ms returns -1  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [debug] [SeggerBackend] - ---just_abort_debug_action
[2024-Jun-23 11:20:40] [debug] [SeggerBackend] - Attempting to clear any configuration errors in debug port before closing connection. 
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.595ms returns -1  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.628ms returns -1  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.655ms returns -1  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.555ms returns -1  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.554ms returns -1  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.566ms returns -1  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x00000000)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.557ms returns -1  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [debug] [SeggerBackend] - ---just_abort_debug_action
[2024-Jun-23 11:20:40] [debug] [SeggerBackend] - Attempting to clear any configuration errors in debug port before closing connection. 
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.554ms returns -1  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.503ms returns -1  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.593ms returns -1  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.665ms returns -1  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.598ms returns -1  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.587ms returns -1  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x00000000)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.554ms returns -1  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [debug] [SeggerBackend] - ---just_abort_debug_action
[2024-Jun-23 11:20:40] [debug] [SeggerBackend] - Attempting to clear any configuration errors in debug port before closing connection. 
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.576ms returns -1  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.517ms returns -1  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.521ms returns -1  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.711ms returns -1  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.534ms returns -1  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.585ms returns -1  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_HasError()  
[2024-Jun-23 11:20:40] [debug] [SeggerBackend] - Ignore exception An unknown error.
[2024-Jun-23 11:20:40] [trace] [  JLink] - - 0.090ms  
[2024-Jun-23 11:20:40] [trace] [  JLink] - JLINK_Close()  
[2024-Jun-23 11:20:40] [debug] [SeggerBackend] - Segger Backend closed.
[2024-Jun-23 11:20:40] [debug] [  nRFXX] - nRF family DLL closed
[2024-Jun-23 11:20:40] [trace] [ Client] - Command close executed for 64 milliseconds with result 0
[2024-Jun-23 11:20:40] [debug] [ Client] - terminate
[2024-Jun-23 11:20:40] [trace] [ Client] - Command terminate executed for 0 milliseconds with result 0
[2024-Jun-23 11:20:40] [trace] [ Worker] - Command close executed for 64 milliseconds with result 0
[2024-Jun-23 11:20:40] [trace] [ Worker] - Command terminate executed for 0 milliseconds with result 0
[2024-Jun-23 11:20:40] [trace] [ Worker] - Executed 6 commands for 307 milliseconds
[2024-Jun-23 11:20:40] [debug] [ Client] - Worker process exited with code: 0

3858.log_unrecognized.log

  • 0

    A bit of clarification: after the "erase & write" the chip will output 1.8V, but SWD is not accessible not like that, not while connecting DKs VDD to custom board's VDD, making it output 3V.

  • +1

    Hi

    I will take a look at your case. 

    Could this be because of missing LF crystal? And if so - would this solution fix the issue?

    The use of internal LF cystall should solve the issue with the application not starting. However you should still be able to flash the device without any issue. 

    I suspect it might be that the module is missing the coil for DCDC, and if that is the case you can have a look at this case on how to recover the device. 

    Regards

    Runar

  • 0 in reply to runsiv

    Hello Runar,

    Thank you for the proposed solution. While I cannot test it directly, I was able to produce another board and build a configuration with DCDC off based on this comment. On this new board and with disabled DCDC the board does not become bricked, and I think this particular issue is resolved.

    I cannot recover the bricked boards at this time, but your solution should work.

    Thank you.

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