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JLink cannot connect using nRF82540 DK

Hi all,

I have a Raytac MDBT50Q-DB board which I  was programming using an nRF82540-DK. It all used to work fine, but now JLink cannot connect to the Raytac board anymore and Segger Embedded Studio gives me the following error message:

Running the JLink commander (Linux version) produces the following output:

I tried running 'nrfjprog --recover -f nrf52' but that is unsuccessful too.

Is my board bricked? Any help is greatly appreciated.

  • I assume you have checked that the device is powered and the connection is ok? Can you test nrfjprog --recover --log (with the log option that is)?

  • Thank you for your reply. Yes, the target is powered and and the SWD connections are OK. I run the command 'nrfjprog --recover -f nrf52 --log' twice. Here are the log files, that look somewhat different.

    --------------------------------------------------------------------------------
    ./nrfjprog --recover -f nrf52 --log
    nrfjprog version 9.7.3
    --------------------------------------------------------------------------------
    nRF_open_dll
    . nRF52_open_dll
    . . nRF52_dll_version
    nRF_enum_emu_snr
    . nRF52_enum_emu_snr
    . . nRF52_enum_emu_snr
    nRF_enum_emu_snr
    . nRF52_enum_emu_snr
    . . nRF52_enum_emu_snr
    nRF_connect_to_emu_with_snr
    . nRF52_connect_to_emu_with_snr
    . . nRF52_is_connected_to_emu
    . . nRF52_enum_emu_snr
    . . nRF52_connect_to_emu_with_snr
    . . . nRF52_connect_to_emu_without_snr
    . . . nRF52_connect_to_emu_without_snr:	JLink:	 Firmware: J-Link OB-SAM3U128-V2-NordicSemi compiled Jul 12 2018 11:44:41
    . . . nRF52_connect_to_emu_without_snr:	JLink:	 Hardware: V1.00
    . . . nRF52_connect_to_emu_without_snr:	JLink:	 S/N: 683237545
    . . . nRF52_connect_to_emu_without_snr:	JLink:	 TELNET listener socket opened on port 19021
    . . . nRF52_connect_to_emu_without_snr:	JLink:	WEBSRV  Starting webserver
    . . . nRF52_connect_to_emu_without_snr:	JLink:	 (0003ms, 0366ms total)  
    . . . nRF52_connect_to_emu_without_snr:	JLink:	T883EE740 000:363 
    . . . nRF52_connect_to_emu_without_snr:	JLink:	WEBSRV Webserver running on local port 19080
    . . . nRF52_connect_to_emu_without_snr:	JLink:	 (0003ms, 0366ms total)  
    . . . nRF52_connect_to_emu_without_snr:	JLink:	T883EE740 000:363 
    . . . nRF52_connect_to_emu_without_snr:	JLink:	  returns O.K.
    . . . nRF52_connect_to_emu_without_snr:	JLink:	 (0003ms, 0366ms total)  
    . . . nRF52_connect_to_emu_without_snr:	JLink:	T883EE740 000:366 
    . . . nRF52_connect_to_emu_without_snr:	JLink:	JLINK_GetHWStatus(...)
    . . . nRF52_connect_to_emu_without_snr:	JLink:	  returns 0x00
    . . . nRF52_connect_to_emu_without_snr:	JLink:	 (0000ms, 0366ms total)  
    . . . nRF52_connect_to_emu_without_snr:	There is no generic nRF52 device in J-Link, so we select NRF52832_xxAA.
    
    . . . nRF52_connect_to_emu_without_snr:	JLink:	T883EE740 000:366 
    . . . nRF52_connect_to_emu_without_snr:	JLink:	JLINK_ExecCommand("Device = NRF52832_xxAA", ...). 
    . . . nRF52_connect_to_emu_without_snr:	JLink:	Device "NRF52832_XXAA" selected.
    . . . nRF52_connect_to_emu_without_snr:	JLink:	Device "NRF52832_XXAA" selected.
    . . . nRF52_connect_to_emu_without_snr:	JLink:	  returns 0x00
    . . . nRF52_connect_to_emu_without_snr:	JLink:	 (0000ms, 0366ms total)  
    . . . nRF52_connect_to_emu_without_snr:	JLink:	T883EE740 000:366 
    . . . nRF52_connect_to_emu_without_snr:	JLink:	JLINK_ExecCommand("SetRestartOnClose = 0", ...). 
    . . . nRF52_connect_to_emu_without_snr:	JLink:	  returns 0x01
    . . . nRF52_connect_to_emu_without_snr:	JLink:	 (0000ms, 0366ms total)  
    . . . nRF52_connect_to_emu_without_snr:	JLink:	T883EE740 000:366 
    . . . nRF52_connect_to_emu_without_snr:	JLink:	JLINK_ExecCommand("DisableFlashDL", ...). 
    . . . nRF52_connect_to_emu_without_snr:	JLink:	  returns 0x00
    . . . nRF52_connect_to_emu_without_snr:	JLink:	 (0000ms, 0366ms total)  
    . . . nRF52_connect_to_emu_without_snr:	JLink:	T883EE740 000:366 
    . . . nRF52_connect_to_emu_without_snr:	JLink:	JLINK_ExecCommand("SetDbgPowerDownOnClose = 1", ...). 
    . . . nRF52_connect_to_emu_without_snr:	JLink:	  returns 0x01
    . . . nRF52_connect_to_emu_without_snr:	JLink:	 (0000ms, 0366ms total)  
    . . . nRF52_connect_to_emu_without_snr:	JLink:	T883EE740 000:366 
    . . . nRF52_connect_to_emu_without_snr:	JLink:	JLINK_ExecCommand("ExcludeFlashCacheRange 0x0-0xFFFFFFFF", ...). 
    . . . nRF52_connect_to_emu_without_snr:	JLink:	  returns 0x00
    . . . nRF52_connect_to_emu_without_snr:	JLink:	 (0000ms, 0366ms total)  
    . . . nRF52_connect_to_emu_without_snr:	JLink:	T883EE740 000:366 
    . . . nRF52_connect_to_emu_without_snr:	JLink:	JLINK_TIF_Select(JLINKARM_TIF_SWD)
    . . . nRF52_connect_to_emu_without_snr:	JLink:	  returns 0x00
    . . . nRF52_connect_to_emu_without_snr:	JLink:	 (0001ms, 0367ms total)  
    . . . nRF52_connect_to_emu_without_snr:	JLink:	T883EE740 000:367 
    . . . nRF52_connect_to_emu_without_snr:	JLink:	JLINK_SetSpeed(2000)
    . . . nRF52_connect_to_emu_without_snr:	JLink:	 (0000ms, 0367ms total)  
    nRF_recover
    . nRF52_recover
    . . nRF52_is_connected_to_emu
    . . nRF52_is_connected_to_emu:	JLink:	T883EE740 000:367 
    . . nRF52_is_connected_to_emu:	JLink:	JLINK_IsOpen()
    . . nRF52_is_connected_to_emu:	JLink:	  returns 0x01
    . . nRF52_is_connected_to_emu:	JLink:	 (0000ms, 0367ms total)  
    . . nRF52_is_connected_to_device
    . . nRF52_is_connected_to_device:	JLink:	T883EE740 000:367 
    . . nRF52_is_connected_to_device:	JLink:	JLINK_IsConnected()
    . . nRF52_is_connected_to_device:	JLink:	  returns FALSE
    . . nRF52_is_connected_to_device:	JLink:	 (0000ms, 0367ms total)  
    . . nRF52_readback_status
    . . . nRF52_is_ctrl_ap_available
    . . . . nRF52_read_access_port_register
    . . . . . nRF52_coresight_configure
    . . . . . nRF52_coresight_configure:	JLink:	T883EE740 000:367 
    . . . . . nRF52_coresight_configure:	JLink:	JLINK_CORESIGHT_Configure()
    . . . . . nRF52_coresight_configure:	JLink:	  returns 0
    . . . . . nRF52_coresight_configure:	JLink:	 (0001ms, 0368ms total)  
    . . . . . nRF52_power_debug_and_system_regions
    . . . . . . nRF52_write_debug_port_register
    . . . . . . nRF52_write_debug_port_register:	JLink:	T883EE740 000:368 
    . . . . . . nRF52_write_debug_port_register:	JLink:	JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x00000000)
    . . . . . . nRF52_write_debug_port_register:	JLink:	  returns 0
    . . . . . . nRF52_write_debug_port_register:	JLink:	 (0000ms, 0368ms total)  
    . . . . . . nRF52_write_debug_port_register:	JLink:	T883EE740 000:368 
    . . . . . . nRF52_write_debug_port_register:	JLink:	JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x01, 0x50000000)
    . . . . . . nRF52_write_debug_port_register:	JLink:	  returns 0
    . . . . . . nRF52_write_debug_port_register:	JLink:	 (0000ms, 0368ms total)  
    . . . . nRF52_read_access_port_register:	JLink:	T883EE740 000:368 
    . . . . nRF52_read_access_port_register:	JLink:	JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x010000F0)
    . . . . nRF52_read_access_port_register:	JLink:	  returns 0
    . . . . nRF52_read_access_port_register:	JLink:	 (0001ms, 0369ms total)  
    . . . . nRF52_read_access_port_register:	JLink:	T883EE740 000:369 
    . . . . nRF52_read_access_port_register:	JLink:	JLINK_CORESIGHT_ReadAPDPReg(AP reg 0x03)
    . . . . nRF52_read_access_port_register:	JLink:	 -- Value=0x02880000
    . . . . nRF52_read_access_port_register:	JLink:	  returns 0
    . . . . nRF52_read_access_port_register:	JLink:	 (0000ms, 0369ms total)  
    . . . . nRF52_read_access_port_register
    . . . . nRF52_read_access_port_register:	JLink:	T883EE740 000:369 
    . . . . nRF52_read_access_port_register:	JLink:	JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x010000F0)
    . . . . nRF52_read_access_port_register:	JLink:	  returns 0
    . . . . nRF52_read_access_port_register:	JLink:	 (0000ms, 0369ms total)  
    . . . . nRF52_read_access_port_register:	JLink:	T883EE740 000:369 
    . . . . nRF52_read_access_port_register:	JLink:	JLINK_CORESIGHT_ReadAPDPReg(AP reg 0x03)
    . . . . nRF52_read_access_port_register:	JLink:	 -- Value=0x02880000
    . . . . nRF52_read_access_port_register:	JLink:	  returns 0
    . . . . nRF52_read_access_port_register:	JLink:	 (0001ms, 0370ms total)  
    . . . . nRF52_read_access_port_register
    . . . . nRF52_read_access_port_register:	JLink:	T883EE740 000:370 
    . . . . nRF52_read_access_port_register:	JLink:	JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x010000F0)
    . . . . nRF52_read_access_port_register:	JLink:	  returns 0
    . . . . nRF52_read_access_port_register:	JLink:	 (0000ms, 0370ms total)  
    . . . . nRF52_read_access_port_register:	JLink:	T883EE740 000:370 
    . . . . nRF52_read_access_port_register:	JLink:	JLINK_CORESIGHT_ReadAPDPReg(AP reg 0x03)
    . . . . nRF52_read_access_port_register:	JLink:	 -- Value=0x00000000
    . . . . nRF52_read_access_port_register:	JLink:	  returns 0
    . . . . nRF52_read_access_port_register:	JLink:	 (0000ms, 0370ms total)  
    . . . . nRF52_read_access_port_register
    . . . . nRF52_read_access_port_register:	JLink:	T883EE740 000:370 
    . . . . nRF52_read_access_port_register:	JLink:	JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x010000F0)
    . . . . nRF52_read_access_port_register:	JLink:	  returns 0
    . . . . nRF52_read_access_port_register:	JLink:	 (0001ms, 0371ms total)  
    . . . . nRF52_read_access_port_register:	JLink:	T883EE740 000:371 
    . . . . nRF52_read_access_port_register:	JLink:	JLINK_CORESIGHT_ReadAPDPReg(AP reg 0x03)
    . . . . nRF52_read_access_port_register:	JLink:	 -- Value=0x00000000
    . . . . nRF52_read_access_port_register:	JLink:	  returns 0
    . . . . nRF52_read_access_port_register:	JLink:	 (0000ms, 0371ms total)  
    . . . . nRF52_read_access_port_register
    . . . . nRF52_read_access_port_register:	JLink:	T883EE740 000:371 
    . . . . nRF52_read_access_port_register:	JLink:	JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x010000F0)
    . . . . nRF52_read_access_port_register:	JLink:	  returns 0
    . . . . nRF52_read_access_port_register:	JLink:	 (0000ms, 0371ms total)  
    . . . . nRF52_read_access_port_register:	JLink:	T883EE740 000:371 
    . . . . nRF52_read_access_port_register:	JLink:	JLINK_CORESIGHT_ReadAPDPReg(AP reg 0x03)
    . . . . nRF52_read_access_port_register:	JLink:	 -- Value=0x00000000
    . . . . nRF52_read_access_port_register:	JLink:	  returns 0
    . . . . nRF52_read_access_port_register:	JLink:	 (0001ms, 0372ms total)  
    . . . . nRF52_read_access_port_register
    . . . . nRF52_read_access_port_register:	JLink:	T883EE740 000:372 
    . . . . nRF52_read_access_port_register:	JLink:	JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x010000F0)
    . . . . nRF52_read_access_port_register:	JLink:	  returns 0
    . . . . nRF52_read_access_port_register:	JLink:	 (0000ms, 0372ms total)  
    . . . . nRF52_read_access_port_register:	JLink:	T883EE740 000:372 
    . . . . nRF52_read_access_port_register:	JLink:	JLINK_CORESIGHT_ReadAPDPReg(AP reg 0x03)
    . . . . nRF52_read_access_port_register:	JLink:	 -- Value=0x00000000
    . . . . nRF52_read_access_port_register:	JLink:	  returns 0
    . . . . nRF52_read_access_port_register:	JLink:	 (0000ms, 0372ms total)  
    . . . . nRF52_read_access_port_register
    . . . . nRF52_read_access_port_register:	JLink:	T883EE740 000:372 
    . . . . nRF52_read_access_port_register:	JLink:	JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x010000F0)
    . . . . nRF52_read_access_port_register:	JLink:	  returns 0
    . . . . nRF52_read_access_port_register:	JLink:	 (0000ms, 0372ms total)  
    . . . . nRF52_read_access_port_register:	JLink:	T883EE740 000:372 
    . . . . nRF52_read_access_port_register:	JLink:	JLINK_CORESIGHT_ReadAPDPReg(AP reg 0x03)
    . . . . nRF52_read_access_port_register:	JLink:	 -- Value=0x00000000
    . . . . nRF52_read_access_port_register:	JLink:	  returns 0
    . . . . nRF52_read_access_port_register:	JLink:	 (0001ms, 0373ms total)  
    . . . . nRF52_read_access_port_register
    . . . . nRF52_read_access_port_register:	JLink:	T883EE740 000:373 
    . . . . nRF52_read_access_port_register:	JLink:	JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x010000F0)
    . . . . nRF52_read_access_port_register:	JLink:	  returns 0
    . . . . nRF52_read_access_port_register:	JLink:	 (0000ms, 0373ms total)  
    . . . . nRF52_read_access_port_register:	JLink:	T883EE740 000:373 
    . . . . nRF52_read_access_port_register:	JLink:	JLINK_CORESIGHT_ReadAPDPReg(AP reg 0x03)
    . . . . nRF52_read_access_port_register:	JLink:	 -- Value=0x00000000
    . . . . nRF52_read_access_port_register:	JLink:	  returns 0
    . . . . nRF52_read_access_port_register:	JLink:	 (0000ms, 0373ms total)  
    . . nRF52_connect_to_device
    . . nRF52_connect_to_device:	JLink:	T883EE740 000:373 
    . . nRF52_connect_to_device:	JLink:	JLINK_Connect()
    . . nRF52_connect_to_device:	JLink:	 >0x10B TIF>
    . . nRF52_connect_to_device:	JLink:	Found SW-DP with ID 0x2BA01477
    . . nRF52_connect_to_device:	JLink:	Found SW-DP with ID 0x2BA01477
    . . nRF52_connect_to_device:	JLink:	 >0x0D TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x28 TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x0D TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x28 TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x10B TIF>
    . . nRF52_connect_to_device:	JLink:	Found SW-DP with ID 0x2BA01477
    . . nRF52_connect_to_device:	JLink:	Found SW-DP with ID 0x2BA01477
    . . nRF52_connect_to_device:	JLink:	 >0x0D TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x28 TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x0D TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x28 TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x0D TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x28 TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x0D TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x28 TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x35 TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x0D TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x28 TIF>
    . . nRF52_connect_to_device:	JLink:	Scanning AP map to find all available APs
    . . nRF52_connect_to_device:	JLink:	Scanning AP map to find all available APs
    . . nRF52_connect_to_device:	JLink:	 >0x0D TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x28 TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x35 TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x35 TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x0D TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x28 TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x35 TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x35 TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x0D TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x28 TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x35 TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x35 TIF>
    . . nRF52_connect_to_device:	JLink:	AP[2]: Stopped AP scan as end of AP map has been reached
    . . nRF52_connect_to_device:	JLink:	AP[2]: Stopped AP scan as end of AP map has been reached
    . . nRF52_connect_to_device:	JLink:	AP[0]: AHB-AP (IDR: 0x24770011)
    . . nRF52_connect_to_device:	JLink:	AP[0]: AHB-AP (IDR: 0x24770011)
    . . nRF52_connect_to_device:	JLink:	AP[1]: JTAG-AP (IDR: 0x02880000)
    . . nRF52_connect_to_device:	JLink:	AP[1]: JTAG-AP (IDR: 0x02880000)
    . . nRF52_connect_to_device:	JLink:	Iterating through AP map to find AHB-AP to use
    . . nRF52_connect_to_device:	JLink:	Iterating through AP map to find AHB-AP to use
    . . nRF52_connect_to_device:	JLink:	 >0x42 TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x28 TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x0D TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x28 TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x35 TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x35 TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x42 TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x28 TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x0D TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x0D TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x35 TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x35 TIF>
    . . nRF52_connect_to_device:	JLink:	AP[0]: Skipped. Could not read CPUID register
    . . nRF52_connect_to_device:	JLink:	AP[0]: Skipped. Could not read CPUID register
    . . nRF52_connect_to_device:	JLink:	AP[1]: Skipped. Not an AHB-AP
    . . nRF52_connect_to_device:	JLink:	AP[1]: Skipped. Not an AHB-AP
    . . nRF52_connect_to_device:	JLink:	   ***** Error: 
    . . nRF52_connect_to_device:	JLink:	Could not find core in Coresight setup
    . . nRF52_connect_to_device:	JLink:	 >0x35 TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x0D TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x0D TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x0D TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x0D TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x35 TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x0D TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x0D TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x35 TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x35 TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x10B TIF>
    . . nRF52_connect_to_device:	JLink:	Found SW-DP with ID 0x2BA01477
    . . nRF52_connect_to_device:	JLink:	Found SW-DP with ID 0x2BA01477
    . . nRF52_connect_to_device:	JLink:	 >0x0D TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x0D TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x10B TIF>
    . . nRF52_connect_to_device:	JLink:	Found SW-DP with ID 0x2BA01477
    . . nRF52_connect_to_device:	JLink:	Found SW-DP with ID 0x2BA01477
    . . nRF52_connect_to_device:	JLink:	 >0x0D TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x28 TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x0D TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x28 TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x0D TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x28 TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x0D TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x28 TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x35 TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x0D TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x28 TIF>
    . . nRF52_connect_to_device:	JLink:	Scanning AP map to find all available APs
    . . nRF52_connect_to_device:	JLink:	Scanning AP map to find all available APs
    . . nRF52_connect_to_device:	JLink:	 >0x0D TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x28 TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x35 TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x35 TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x0D TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x28 TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x35 TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x35 TIF>
    . . nRF52_connect_to_device:	JLink:	AP[1]: Stopped AP scan as end of AP map seems to be reached
    . . nRF52_connect_to_device:	JLink:	AP[1]: Stopped AP scan as end of AP map seems to be reached
    . . nRF52_connect_to_device:	JLink:	 >0x6A TIF>
    . . nRF52_connect_to_device:	JLink:	AP[0]: AHB-AP (IDR: 0x24770011)
    . . nRF52_connect_to_device:	JLink:	AP[0]: AHB-AP (IDR: 0x24770011)
    . . nRF52_connect_to_device:	JLink:	Iterating through AP map to find AHB-AP to use
    . . nRF52_connect_to_device:	JLink:	Iterating through AP map to find AHB-AP to use
    . . nRF52_connect_to_device:	JLink:	 >0x42 TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x0D TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x35 TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x35 TIF>
    . . nRF52_connect_to_device:	JLink:	AP[0]: Skipped. Could not read AHB ROM register
    . . nRF52_connect_to_device:	JLink:	AP[0]: Skipped. Could not read AHB ROM register
    . . nRF52_connect_to_device:	JLink:	  returns 0xFFFFFEFB
    . . nRF52_connect_to_device:	JLink:	 (0277ms, 0650ms total)  
    . . nRF52_connect_to_device:	JLink:	Could not find core in Coresight setup
    . . nRF52_connect_to_device:	JLinkARM.dll reported error ďż˝ at line 5652.
    
    . . nRF52_connect_to_device:	JLink:	T883EE740 000:650 
    . . nRF52_connect_to_device:	JLink:	JLINK_ClrError()
    . . nRF52_connect_to_device:	JLink:	 (0000ms, 0650ms total)  
    . . nRF52_connect_to_device:	JLinkARM.dll Connect returned error -261.
    
    nRF_close_dll
    . nRF52_close_dll
    . . nRF52_is_connected_to_emu
    . . nRF52_is_connected_to_emu:	JLink:	T883EE740 000:650 
    . . nRF52_is_connected_to_emu:	JLink:	JLINK_IsOpen()
    . . nRF52_is_connected_to_emu:	JLink:	  returns 0x01
    . . nRF52_is_connected_to_emu:	JLink:	 (0001ms, 0651ms total)  
    . . nRF52_disconnect_from_emu
    . . . nRF52_is_connected_to_device
    . . . nRF52_is_connected_to_device:	JLink:	T883EE740 000:651 
    . . . nRF52_is_connected_to_device:	JLink:	JLINK_IsConnected()
    . . . nRF52_is_connected_to_device:	JLink:	  returns FALSE
    . . . nRF52_is_connected_to_device:	JLink:	 (0000ms, 0651ms total)  
    . . . nRF52_unpower_debug_and_system_regions
    . . . . nRF52_write_debug_port_register
    . . . . nRF52_write_debug_port_register:	JLink:	T883EE740 000:651 
    . . . . nRF52_write_debug_port_register:	JLink:	JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x00000000)
    . . . . nRF52_write_debug_port_register:	JLink:	  returns 0
    . . . . nRF52_write_debug_port_register:	JLink:	 (0000ms, 0651ms total)  
    . . . . nRF52_write_debug_port_register:	JLink:	T883EE740 000:651 
    . . . . nRF52_write_debug_port_register:	JLink:	JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x01, 0x00000000)
    . . . . nRF52_write_debug_port_register:	JLink:	  returns 0
    . . . . nRF52_write_debug_port_register:	JLink:	 (0001ms, 0652ms total)  
    . . . . nRF52_read_debug_port_register
    . . . . nRF52_read_debug_port_register:	JLink:	T883EE740 000:652 
    . . . . nRF52_read_debug_port_register:	JLink:	JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x00000000)
    . . . . nRF52_read_debug_port_register:	JLink:	  returns 0
    . . . . nRF52_read_debug_port_register:	JLink:	 (0000ms, 0652ms total)  
    . . . . nRF52_read_debug_port_register:	JLink:	T883EE740 000:652 
    . . . . nRF52_read_debug_port_register:	JLink:	JLINK_CORESIGHT_ReadAPDPReg(DP reg 0x01)
    . . . . nRF52_read_debug_port_register:	JLink:	 -- Value=0x00000000
    . . . . nRF52_read_debug_port_register:	JLink:	  returns 0
    . . . . nRF52_read_debug_port_register:	JLink:	 (0001ms, 0653ms total)  
    . . nRF52_disconnect_from_emu:	JLink:	T883EE740 000:659 
    . . nRF52_disconnect_from_emu:	JLink:	JLINK_Close()
    

    --------------------------------------------------------------------------------
    ./nrfjprog --recover -f nrf52 --log
    nrfjprog version 9.7.3
    --------------------------------------------------------------------------------
    nRF_open_dll
    . nRF52_open_dll
    . . nRF52_dll_version
    nRF_enum_emu_snr
    . nRF52_enum_emu_snr
    . . nRF52_enum_emu_snr
    nRF_enum_emu_snr
    . nRF52_enum_emu_snr
    . . nRF52_enum_emu_snr
    nRF_connect_to_emu_with_snr
    . nRF52_connect_to_emu_with_snr
    . . nRF52_is_connected_to_emu
    . . nRF52_enum_emu_snr
    . . nRF52_connect_to_emu_with_snr
    . . . nRF52_connect_to_emu_without_snr
    . . . nRF52_connect_to_emu_without_snr:	JLink:	 Firmware: J-Link OB-SAM3U128-V2-NordicSemi compiled Jul 12 2018 11:44:41
    . . . nRF52_connect_to_emu_without_snr:	JLink:	 Hardware: V1.00
    . . . nRF52_connect_to_emu_without_snr:	JLink:	 S/N: 683237545
    . . . nRF52_connect_to_emu_without_snr:	JLink:	 TELNET listener socket opened on port 19021
    . . . nRF52_connect_to_emu_without_snr:	JLink:	WEBSRV  Starting webserver
    . . . nRF52_connect_to_emu_without_snr:	JLink:	 (0003ms, 0370ms total)  
    . . . nRF52_connect_to_emu_without_snr:	JLink:	TD1EE2740 000:367 
    . . . nRF52_connect_to_emu_without_snr:	JLink:	WEBSRV Webserver running on local port 19080
    . . . nRF52_connect_to_emu_without_snr:	JLink:	 (0003ms, 0370ms total)  
    . . . nRF52_connect_to_emu_without_snr:	JLink:	TD1EE2740 000:367 
    . . . nRF52_connect_to_emu_without_snr:	JLink:	  returns O.K.
    . . . nRF52_connect_to_emu_without_snr:	JLink:	 (0003ms, 0370ms total)  
    . . . nRF52_connect_to_emu_without_snr:	JLink:	TD1EE2740 000:370 
    . . . nRF52_connect_to_emu_without_snr:	JLink:	JLINK_GetHWStatus(...)
    . . . nRF52_connect_to_emu_without_snr:	JLink:	  returns 0x00
    . . . nRF52_connect_to_emu_without_snr:	JLink:	 (0000ms, 0370ms total)  
    . . . nRF52_connect_to_emu_without_snr:	There is no generic nRF52 device in J-Link, so we select NRF52832_xxAA.
    
    . . . nRF52_connect_to_emu_without_snr:	JLink:	TD1EE2740 000:370 
    . . . nRF52_connect_to_emu_without_snr:	JLink:	JLINK_ExecCommand("Device = NRF52832_xxAA", ...). 
    . . . nRF52_connect_to_emu_without_snr:	JLink:	Device "NRF52832_XXAA" selected.
    . . . nRF52_connect_to_emu_without_snr:	JLink:	Device "NRF52832_XXAA" selected.
    . . . nRF52_connect_to_emu_without_snr:	JLink:	  returns 0x00
    . . . nRF52_connect_to_emu_without_snr:	JLink:	 (0000ms, 0370ms total)  
    . . . nRF52_connect_to_emu_without_snr:	JLink:	TD1EE2740 000:370 
    . . . nRF52_connect_to_emu_without_snr:	JLink:	JLINK_ExecCommand("SetRestartOnClose = 0", ...). 
    . . . nRF52_connect_to_emu_without_snr:	JLink:	  returns 0x01
    . . . nRF52_connect_to_emu_without_snr:	JLink:	 (0000ms, 0370ms total)  
    . . . nRF52_connect_to_emu_without_snr:	JLink:	TD1EE2740 000:370 
    . . . nRF52_connect_to_emu_without_snr:	JLink:	JLINK_ExecCommand("DisableFlashDL", ...). 
    . . . nRF52_connect_to_emu_without_snr:	JLink:	  returns 0x00
    . . . nRF52_connect_to_emu_without_snr:	JLink:	 (0000ms, 0370ms total)  
    . . . nRF52_connect_to_emu_without_snr:	JLink:	TD1EE2740 000:370 
    . . . nRF52_connect_to_emu_without_snr:	JLink:	JLINK_ExecCommand("SetDbgPowerDownOnClose = 1", ...). 
    . . . nRF52_connect_to_emu_without_snr:	JLink:	  returns 0x01
    . . . nRF52_connect_to_emu_without_snr:	JLink:	 (0000ms, 0371ms total)  
    . . . nRF52_connect_to_emu_without_snr:	JLink:	TD1EE2740 000:371 
    . . . nRF52_connect_to_emu_without_snr:	JLink:	JLINK_ExecCommand("ExcludeFlashCacheRange 0x0-0xFFFFFFFF", ...). 
    . . . nRF52_connect_to_emu_without_snr:	JLink:	  returns 0x00
    . . . nRF52_connect_to_emu_without_snr:	JLink:	 (0000ms, 0371ms total)  
    . . . nRF52_connect_to_emu_without_snr:	JLink:	TD1EE2740 000:371 
    . . . nRF52_connect_to_emu_without_snr:	JLink:	JLINK_TIF_Select(JLINKARM_TIF_SWD)
    . . . nRF52_connect_to_emu_without_snr:	JLink:	  returns 0x00
    . . . nRF52_connect_to_emu_without_snr:	JLink:	 (0000ms, 0371ms total)  
    . . . nRF52_connect_to_emu_without_snr:	JLink:	TD1EE2740 000:371 
    . . . nRF52_connect_to_emu_without_snr:	JLink:	JLINK_SetSpeed(2000)
    . . . nRF52_connect_to_emu_without_snr:	JLink:	 (0000ms, 0371ms total)  
    nRF_recover
    . nRF52_recover
    . . nRF52_is_connected_to_emu
    . . nRF52_is_connected_to_emu:	JLink:	TD1EE2740 000:371 
    . . nRF52_is_connected_to_emu:	JLink:	JLINK_IsOpen()
    . . nRF52_is_connected_to_emu:	JLink:	  returns 0x01
    . . nRF52_is_connected_to_emu:	JLink:	 (0000ms, 0371ms total)  
    . . nRF52_is_connected_to_device
    . . nRF52_is_connected_to_device:	JLink:	TD1EE2740 000:371 
    . . nRF52_is_connected_to_device:	JLink:	JLINK_IsConnected()
    . . nRF52_is_connected_to_device:	JLink:	  returns FALSE
    . . nRF52_is_connected_to_device:	JLink:	 (0001ms, 0372ms total)  
    . . nRF52_readback_status
    . . . nRF52_is_ctrl_ap_available
    . . . . nRF52_read_access_port_register
    . . . . . nRF52_coresight_configure
    . . . . . nRF52_coresight_configure:	JLink:	TD1EE2740 000:372 
    . . . . . nRF52_coresight_configure:	JLink:	JLINK_CORESIGHT_Configure()
    . . . . . nRF52_coresight_configure:	JLink:	  returns 0
    . . . . . nRF52_coresight_configure:	JLink:	 (0000ms, 0372ms total)  
    . . . . . nRF52_power_debug_and_system_regions
    . . . . . . nRF52_write_debug_port_register
    . . . . . . nRF52_write_debug_port_register:	JLink:	TD1EE2740 000:372 
    . . . . . . nRF52_write_debug_port_register:	JLink:	JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x00000000)
    . . . . . . nRF52_write_debug_port_register:	JLink:	  returns 0
    . . . . . . nRF52_write_debug_port_register:	JLink:	 (0002ms, 0374ms total)  
    . . . . . . nRF52_write_debug_port_register:	JLink:	TD1EE2740 000:374 
    . . . . . . nRF52_write_debug_port_register:	JLink:	JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x01, 0x50000000)
    . . . . . . nRF52_write_debug_port_register:	JLink:	  returns 0
    . . . . . . nRF52_write_debug_port_register:	JLink:	 (0000ms, 0374ms total)  
    . . . . nRF52_read_access_port_register:	JLink:	TD1EE2740 000:374 
    . . . . nRF52_read_access_port_register:	JLink:	JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x010000F0)
    . . . . nRF52_read_access_port_register:	JLink:	  returns 0
    . . . . nRF52_read_access_port_register:	JLink:	 (0000ms, 0374ms total)  
    . . . . nRF52_read_access_port_register:	JLink:	TD1EE2740 000:374 
    . . . . nRF52_read_access_port_register:	JLink:	JLINK_CORESIGHT_ReadAPDPReg(AP reg 0x03)
    . . . . nRF52_read_access_port_register:	JLink:	 -- Value=0x02880000
    . . . . nRF52_read_access_port_register:	JLink:	  returns 0
    . . . . nRF52_read_access_port_register:	JLink:	 (0000ms, 0374ms total)  
    . . . . nRF52_read_access_port_register
    . . . . nRF52_read_access_port_register:	JLink:	TD1EE2740 000:374 
    . . . . nRF52_read_access_port_register:	JLink:	JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x010000F0)
    . . . . nRF52_read_access_port_register:	JLink:	  returns 0
    . . . . nRF52_read_access_port_register:	JLink:	 (0001ms, 0375ms total)  
    . . . . nRF52_read_access_port_register:	JLink:	TD1EE2740 000:375 
    . . . . nRF52_read_access_port_register:	JLink:	JLINK_CORESIGHT_ReadAPDPReg(AP reg 0x03)
    . . . . nRF52_read_access_port_register:	JLink:	 -- Value=0x02880000
    . . . . nRF52_read_access_port_register:	JLink:	  returns 0
    . . . . nRF52_read_access_port_register:	JLink:	 (0000ms, 0375ms total)  
    . . . . nRF52_read_access_port_register
    . . . . nRF52_read_access_port_register:	JLink:	TD1EE2740 000:375 
    . . . . nRF52_read_access_port_register:	JLink:	JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x010000F0)
    . . . . nRF52_read_access_port_register:	JLink:	  returns 0
    . . . . nRF52_read_access_port_register:	JLink:	 (0000ms, 0375ms total)  
    . . . . nRF52_read_access_port_register:	JLink:	TD1EE2740 000:375 
    . . . . nRF52_read_access_port_register:	JLink:	JLINK_CORESIGHT_ReadAPDPReg(AP reg 0x03)
    . . . . nRF52_read_access_port_register:	JLink:	 -- Value=0x02880000
    . . . . nRF52_read_access_port_register:	JLink:	  returns 0
    . . . . nRF52_read_access_port_register:	JLink:	 (0000ms, 0375ms total)  
    . . . . nRF52_read_access_port_register
    . . . . nRF52_read_access_port_register:	JLink:	TD1EE2740 000:375 
    . . . . nRF52_read_access_port_register:	JLink:	JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x010000F0)
    . . . . nRF52_read_access_port_register:	JLink:	  returns 0
    . . . . nRF52_read_access_port_register:	JLink:	 (0000ms, 0375ms total)  
    . . . . nRF52_read_access_port_register:	JLink:	TD1EE2740 000:375 
    . . . . nRF52_read_access_port_register:	JLink:	JLINK_CORESIGHT_ReadAPDPReg(AP reg 0x03)
    . . . . nRF52_read_access_port_register:	JLink:	 -- Value=0x02880000
    . . . . nRF52_read_access_port_register:	JLink:	  returns 0
    . . . . nRF52_read_access_port_register:	JLink:	 (0001ms, 0376ms total)  
    . . . nRF52_read_access_port_register
    . . . nRF52_read_access_port_register:	JLink:	TD1EE2740 000:376 
    . . . nRF52_read_access_port_register:	JLink:	JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x01000000)
    . . . nRF52_read_access_port_register:	JLink:	  returns 0
    . . . nRF52_read_access_port_register:	JLink:	 (0000ms, 0376ms total)  
    . . . nRF52_read_access_port_register:	JLink:	TD1EE2740 000:376 
    . . . nRF52_read_access_port_register:	JLink:	JLINK_CORESIGHT_ReadAPDPReg(AP reg 0x03)
    . . . nRF52_read_access_port_register:	JLink:	 -- Value=0x00000001
    . . . nRF52_read_access_port_register:	JLink:	  returns 0
    . . . nRF52_read_access_port_register:	JLink:	 (0000ms, 0376ms total)  
    . . . nRF52_read_access_port_register
    . . . nRF52_read_access_port_register:	JLink:	TD1EE2740 000:376 
    . . . nRF52_read_access_port_register:	JLink:	JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x01000000)
    . . . nRF52_read_access_port_register:	JLink:	  returns 0
    . . . nRF52_read_access_port_register:	JLink:	 (0000ms, 0376ms total)  
    . . . nRF52_read_access_port_register:	JLink:	TD1EE2740 000:376 
    . . . nRF52_read_access_port_register:	JLink:	JLINK_CORESIGHT_ReadAPDPReg(AP reg 0x03)
    . . . nRF52_read_access_port_register:	JLink:	 -- Value=0x00000001
    . . . nRF52_read_access_port_register:	JLink:	  returns 0
    . . . nRF52_read_access_port_register:	JLink:	 (0000ms, 0376ms total)  
    . . . nRF52_read_access_port_register
    . . . nRF52_read_access_port_register:	JLink:	TD1EE2740 000:377 
    . . . nRF52_read_access_port_register:	JLink:	JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x01000000)
    . . . nRF52_read_access_port_register:	JLink:	  returns 0
    . . . nRF52_read_access_port_register:	JLink:	 (0000ms, 0376ms total)  
    . . . nRF52_read_access_port_register:	JLink:	TD1EE2740 000:377 
    . . . nRF52_read_access_port_register:	JLink:	JLINK_CORESIGHT_ReadAPDPReg(AP reg 0x03)
    . . . nRF52_read_access_port_register:	JLink:	 -- Value=0x00000000
    . . . nRF52_read_access_port_register:	JLink:	  returns 0
    . . . nRF52_read_access_port_register:	JLink:	 (0000ms, 0376ms total)  
    . . . nRF52_read_access_port_register
    . . . nRF52_read_access_port_register:	JLink:	TD1EE2740 000:377 
    . . . nRF52_read_access_port_register:	JLink:	JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x01000000)
    . . . nRF52_read_access_port_register:	JLink:	  returns 0
    . . . nRF52_read_access_port_register:	JLink:	 (0000ms, 0376ms total)  
    . . . nRF52_read_access_port_register:	JLink:	TD1EE2740 000:377 
    . . . nRF52_read_access_port_register:	JLink:	JLINK_CORESIGHT_ReadAPDPReg(AP reg 0x03)
    . . . nRF52_read_access_port_register:	JLink:	 -- Value=0x00000000
    . . . nRF52_read_access_port_register:	JLink:	  returns 0
    . . . nRF52_read_access_port_register:	JLink:	 (0001ms, 0377ms total)  
    . . . nRF52_read_access_port_register
    . . . nRF52_read_access_port_register:	JLink:	TD1EE2740 000:378 
    . . . nRF52_read_access_port_register:	JLink:	JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x01000000)
    . . . nRF52_read_access_port_register:	JLink:	  returns 0
    . . . nRF52_read_access_port_register:	JLink:	 (0000ms, 0377ms total)  
    . . . nRF52_read_access_port_register:	JLink:	TD1EE2740 000:378 
    . . . nRF52_read_access_port_register:	JLink:	JLINK_CORESIGHT_ReadAPDPReg(AP reg 0x03)
    . . . nRF52_read_access_port_register:	JLink:	 -- Value=0x00000000
    . . . nRF52_read_access_port_register:	JLink:	  returns 0
    . . . nRF52_read_access_port_register:	JLink:	 (0000ms, 0377ms total)  
    . . . nRF52_read_access_port_register
    . . . nRF52_read_access_port_register:	JLink:	TD1EE2740 000:378 
    . . . nRF52_read_access_port_register:	JLink:	JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x01000000)
    . . . nRF52_read_access_port_register:	JLink:	  returns 0
    . . . nRF52_read_access_port_register:	JLink:	 (0000ms, 0377ms total)  
    . . . nRF52_read_access_port_register:	JLink:	TD1EE2740 000:378 
    . . . nRF52_read_access_port_register:	JLink:	JLINK_CORESIGHT_ReadAPDPReg(AP reg 0x03)
    . . . nRF52_read_access_port_register:	JLink:	 -- Value=0x00000000
    . . . nRF52_read_access_port_register:	JLink:	  returns 0
    . . . nRF52_read_access_port_register:	JLink:	 (0001ms, 0378ms total)  
    . . . nRF52_read_access_port_register
    . . . nRF52_read_access_port_register:	JLink:	TD1EE2740 000:379 
    . . . nRF52_read_access_port_register:	JLink:	JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x01000000)
    . . . nRF52_read_access_port_register:	JLink:	  returns 0
    . . . nRF52_read_access_port_register:	JLink:	 (0000ms, 0378ms total)  
    . . . nRF52_read_access_port_register:	JLink:	TD1EE2740 000:379 
    . . . nRF52_read_access_port_register:	JLink:	JLINK_CORESIGHT_ReadAPDPReg(AP reg 0x03)
    . . . nRF52_read_access_port_register:	JLink:	 -- Value=0x00000000
    . . . nRF52_read_access_port_register:	JLink:	  returns 0
    . . . nRF52_read_access_port_register:	JLink:	 (0000ms, 0378ms total)  
    . . . nRF52_read_access_port_register
    . . . nRF52_read_access_port_register:	JLink:	TD1EE2740 000:379 
    . . . nRF52_read_access_port_register:	JLink:	JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x01000000)
    . . . nRF52_read_access_port_register:	JLink:	  returns 0
    . . . nRF52_read_access_port_register:	JLink:	 (0000ms, 0378ms total)  
    . . . nRF52_read_access_port_register:	JLink:	TD1EE2740 000:379 
    . . . nRF52_read_access_port_register:	JLink:	JLINK_CORESIGHT_ReadAPDPReg(AP reg 0x03)
    . . . nRF52_read_access_port_register:	JLink:	 -- Value=0x00000000
    . . . nRF52_read_access_port_register:	JLink:	  returns 0
    . . . nRF52_read_access_port_register:	JLink:	 (0001ms, 0379ms total)  
    . . nRF52_write_access_port_register
    . . nRF52_write_access_port_register:	JLink:	TD1EE2740 000:380 
    . . nRF52_write_access_port_register:	JLink:	JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x01000000)
    . . nRF52_write_access_port_register:	JLink:	  returns 0
    . . nRF52_write_access_port_register:	JLink:	 (0000ms, 0379ms total)  
    . . nRF52_write_access_port_register:	JLink:	TD1EE2740 000:380 
    . . nRF52_write_access_port_register:	JLink:	JLINK_CORESIGHT_WriteAPDPReg(AP reg 0x01, 0x00000001)
    . . nRF52_write_access_port_register:	JLink:	  returns 0
    . . nRF52_write_access_port_register:	JLink:	 (0000ms, 0379ms total)  
    . . nRF52_read_access_port_register
    . . nRF52_read_access_port_register:	JLink:	TD1EE2740 000:880 
    . . nRF52_read_access_port_register:	JLink:	JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x01000000)
    . . nRF52_read_access_port_register:	JLink:	  returns 0
    . . nRF52_read_access_port_register:	JLink:	 (0001ms, 0380ms total)  
    . . nRF52_read_access_port_register:	JLink:	TD1EE2740 000:881 
    . . nRF52_read_access_port_register:	JLink:	JLINK_CORESIGHT_ReadAPDPReg(AP reg 0x02)
    . . nRF52_read_access_port_register:	JLink:	 -- Value=0x00000000
    . . nRF52_read_access_port_register:	JLink:	  returns 0
    . . nRF52_read_access_port_register:	JLink:	 (0000ms, 0380ms total)  
    . . nRF52_write_access_port_register
    . . nRF52_write_access_port_register:	JLink:	TD1EE2740 000:881 
    . . nRF52_write_access_port_register:	JLink:	JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x01000000)
    . . nRF52_write_access_port_register:	JLink:	  returns 0
    . . nRF52_write_access_port_register:	JLink:	 (0001ms, 0381ms total)  
    . . nRF52_write_access_port_register:	JLink:	TD1EE2740 000:882 
    . . nRF52_write_access_port_register:	JLink:	JLINK_CORESIGHT_WriteAPDPReg(AP reg 0x00, 0x00000001)
    . . nRF52_write_access_port_register:	JLink:	  returns 0
    . . nRF52_write_access_port_register:	JLink:	 (0000ms, 0381ms total)  
    . . nRF52_write_access_port_register
    . . nRF52_write_access_port_register:	JLink:	TD1EE2740 000:892 
    . . nRF52_write_access_port_register:	JLink:	JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x01000000)
    . . nRF52_write_access_port_register:	JLink:	  returns 0
    . . nRF52_write_access_port_register:	JLink:	 (0001ms, 0382ms total)  
    . . nRF52_write_access_port_register:	JLink:	TD1EE2740 000:893 
    . . nRF52_write_access_port_register:	JLink:	JLINK_CORESIGHT_WriteAPDPReg(AP reg 0x00, 0x00000000)
    . . nRF52_write_access_port_register:	JLink:	  returns 0
    . . nRF52_write_access_port_register:	JLink:	 (0000ms, 0382ms total)  
    . . nRF52_write_access_port_register
    . . nRF52_write_access_port_register:	JLink:	TD1EE2740 000:893 
    . . nRF52_write_access_port_register:	JLink:	JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x01000000)
    . . nRF52_write_access_port_register:	JLink:	  returns -1
    . . nRF52_write_access_port_register:	JLink:	 (0000ms, 0382ms total)  
    . . nRF52_write_access_port_register:	JLinkARM.dll CORESIGHT_WriteAPDPReg returned error -1.
    
    . . nRF52_write_access_port_register
    . . nRF52_write_access_port_register:	JLink:	TD1EE2740 000:893 
    . . nRF52_write_access_port_register:	JLink:	JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x01000000)
    . . nRF52_write_access_port_register:	JLink:	  returns 0
    . . nRF52_write_access_port_register:	JLink:	 (0001ms, 0383ms total)  
    . . nRF52_write_access_port_register:	JLink:	TD1EE2740 000:894 
    . . nRF52_write_access_port_register:	JLink:	JLINK_CORESIGHT_WriteAPDPReg(AP reg 0x01, 0x00000001)
    . . nRF52_write_access_port_register:	JLink:	  returns 0
    . . nRF52_write_access_port_register:	JLink:	 (0000ms, 0383ms total)  
    . . nRF52_read_access_port_register
    . . nRF52_read_access_port_register:	JLink:	TD1EE2740 001:394 
    . . nRF52_read_access_port_register:	JLink:	JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x01000000)
    . . nRF52_read_access_port_register:	JLink:	  returns 0
    . . nRF52_read_access_port_register:	JLink:	 (0001ms, 0384ms total)  
    . . nRF52_read_access_port_register:	JLink:	TD1EE2740 001:395 
    . . nRF52_read_access_port_register:	JLink:	JLINK_CORESIGHT_ReadAPDPReg(AP reg 0x02)
    . . nRF52_read_access_port_register:	JLink:	 -- Value=0x00000000
    . . nRF52_read_access_port_register:	JLink:	  returns 0
    . . nRF52_read_access_port_register:	JLink:	 (0001ms, 0385ms total)  
    . . nRF52_write_access_port_register
    . . nRF52_write_access_port_register:	JLink:	TD1EE2740 001:396 
    . . nRF52_write_access_port_register:	JLink:	JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x01000000)
    . . nRF52_write_access_port_register:	JLink:	  returns 0
    . . nRF52_write_access_port_register:	JLink:	 (0000ms, 0385ms total)  
    . . nRF52_write_access_port_register:	JLink:	TD1EE2740 001:396 
    . . nRF52_write_access_port_register:	JLink:	JLINK_CORESIGHT_WriteAPDPReg(AP reg 0x00, 0x00000001)
    . . nRF52_write_access_port_register:	JLink:	  returns 0
    . . nRF52_write_access_port_register:	JLink:	 (0000ms, 0385ms total)  
    . . nRF52_write_access_port_register
    . . nRF52_write_access_port_register:	JLink:	TD1EE2740 001:407 
    . . nRF52_write_access_port_register:	JLink:	JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x01000000)
    . . nRF52_write_access_port_register:	JLink:	  returns 0
    . . nRF52_write_access_port_register:	JLink:	 (0000ms, 0385ms total)  
    . . nRF52_write_access_port_register:	JLink:	TD1EE2740 001:407 
    . . nRF52_write_access_port_register:	JLink:	JLINK_CORESIGHT_WriteAPDPReg(AP reg 0x00, 0x00000000)
    . . nRF52_write_access_port_register:	JLink:	  returns 0
    . . nRF52_write_access_port_register:	JLink:	 (0001ms, 0386ms total)  
    . . nRF52_write_access_port_register
    . . nRF52_write_access_port_register:	JLink:	TD1EE2740 001:408 
    . . nRF52_write_access_port_register:	JLink:	JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x01000000)
    . . nRF52_write_access_port_register:	JLink:	  returns -1
    . . nRF52_write_access_port_register:	JLink:	 (0000ms, 0386ms total)  
    . . nRF52_write_access_port_register:	JLinkARM.dll CORESIGHT_WriteAPDPReg returned error -1.
    
    . . nRF52_write_access_port_register
    . . nRF52_write_access_port_register:	JLink:	TD1EE2740 001:408 
    . . nRF52_write_access_port_register:	JLink:	JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x01000000)
    . . nRF52_write_access_port_register:	JLink:	  returns 0
    . . nRF52_write_access_port_register:	JLink:	 (0000ms, 0386ms total)  
    . . nRF52_write_access_port_register:	JLink:	TD1EE2740 001:408 
    . . nRF52_write_access_port_register:	JLink:	JLINK_CORESIGHT_WriteAPDPReg(AP reg 0x01, 0x00000001)
    . . nRF52_write_access_port_register:	JLink:	  returns 0
    . . nRF52_write_access_port_register:	JLink:	 (0001ms, 0387ms total)  
    . . nRF52_read_access_port_register
    . . nRF52_read_access_port_register:	JLink:	TD1EE2740 001:909 
    . . nRF52_read_access_port_register:	JLink:	JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x01000000)
    . . nRF52_read_access_port_register:	JLink:	  returns 0
    . . nRF52_read_access_port_register:	JLink:	 (0001ms, 0388ms total)  
    . . nRF52_read_access_port_register:	JLink:	TD1EE2740 001:910 
    . . nRF52_read_access_port_register:	JLink:	JLINK_CORESIGHT_ReadAPDPReg(AP reg 0x02)
    . . nRF52_read_access_port_register:	JLink:	 -- Value=0x00000000
    . . nRF52_read_access_port_register:	JLink:	  returns 0
    . . nRF52_read_access_port_register:	JLink:	 (0000ms, 0388ms total)  
    . . nRF52_write_access_port_register
    . . nRF52_write_access_port_register:	JLink:	TD1EE2740 001:910 
    . . nRF52_write_access_port_register:	JLink:	JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x01000000)
    . . nRF52_write_access_port_register:	JLink:	  returns 0
    . . nRF52_write_access_port_register:	JLink:	 (0001ms, 0389ms total)  
    . . nRF52_write_access_port_register:	JLink:	TD1EE2740 001:911 
    . . nRF52_write_access_port_register:	JLink:	JLINK_CORESIGHT_WriteAPDPReg(AP reg 0x00, 0x00000001)
    . . nRF52_write_access_port_register:	JLink:	  returns 0
    . . nRF52_write_access_port_register:	JLink:	 (0000ms, 0389ms total)  
    . . nRF52_write_access_port_register
    . . nRF52_write_access_port_register:	JLink:	TD1EE2740 001:921 
    . . nRF52_write_access_port_register:	JLink:	JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x01000000)
    . . nRF52_write_access_port_register:	JLink:	  returns 0
    . . nRF52_write_access_port_register:	JLink:	 (0001ms, 0390ms total)  
    . . nRF52_write_access_port_register:	JLink:	TD1EE2740 001:922 
    . . nRF52_write_access_port_register:	JLink:	JLINK_CORESIGHT_WriteAPDPReg(AP reg 0x00, 0x00000000)
    . . nRF52_write_access_port_register:	JLink:	  returns 0
    . . nRF52_write_access_port_register:	JLink:	 (0000ms, 0390ms total)  
    . . nRF52_write_access_port_register
    . . nRF52_write_access_port_register:	JLink:	TD1EE2740 001:922 
    . . nRF52_write_access_port_register:	JLink:	JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x01000000)
    . . nRF52_write_access_port_register:	JLink:	  returns -1
    . . nRF52_write_access_port_register:	JLink:	 (0000ms, 0390ms total)  
    . . nRF52_write_access_port_register:	JLinkARM.dll CORESIGHT_WriteAPDPReg returned error -1.
    
    . . nRF52_connect_to_device
    . . nRF52_connect_to_device:	JLink:	TD1EE2740 001:923 
    . . nRF52_connect_to_device:	JLink:	JLINK_Connect()
    . . nRF52_connect_to_device:	JLink:	 >0x10B TIF>
    . . nRF52_connect_to_device:	JLink:	Found SW-DP with ID 0x2BA01477
    . . nRF52_connect_to_device:	JLink:	Found SW-DP with ID 0x2BA01477
    . . nRF52_connect_to_device:	JLink:	 >0x0D TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x28 TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x0D TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x10B TIF>
    . . nRF52_connect_to_device:	JLink:	Found SW-DP with ID 0x2BA01477
    . . nRF52_connect_to_device:	JLink:	Found SW-DP with ID 0x2BA01477
    . . nRF52_connect_to_device:	JLink:	 >0x0D TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x28 TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x0D TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x28 TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x0D TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x28 TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x0D TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x28 TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x35 TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x0D TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x28 TIF>
    . . nRF52_connect_to_device:	JLink:	Scanning AP map to find all available APs
    . . nRF52_connect_to_device:	JLink:	Scanning AP map to find all available APs
    . . nRF52_connect_to_device:	JLink:	 >0x0D TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x28 TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x35 TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x35 TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x0D TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x28 TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x35 TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x35 TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x0D TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x28 TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x35 TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x35 TIF>
    . . nRF52_connect_to_device:	JLink:	AP[2]: Stopped AP scan as end of AP map has been reached
    . . nRF52_connect_to_device:	JLink:	AP[2]: Stopped AP scan as end of AP map has been reached
    . . nRF52_connect_to_device:	JLink:	AP[0]: AHB-AP (IDR: 0x24770011)
    . . nRF52_connect_to_device:	JLink:	AP[0]: AHB-AP (IDR: 0x24770011)
    . . nRF52_connect_to_device:	JLink:	AP[1]: JTAG-AP (IDR: 0x02880000)
    . . nRF52_connect_to_device:	JLink:	AP[1]: JTAG-AP (IDR: 0x02880000)
    . . nRF52_connect_to_device:	JLink:	Iterating through AP map to find AHB-AP to use
    . . nRF52_connect_to_device:	JLink:	Iterating through AP map to find AHB-AP to use
    . . nRF52_connect_to_device:	JLink:	 >0x42 TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x0D TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x35 TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x35 TIF>
    . . nRF52_connect_to_device:	JLink:	AP[0]: Skipped. Could not read AHB ROM register
    . . nRF52_connect_to_device:	JLink:	AP[0]: Skipped. Could not read AHB ROM register
    . . nRF52_connect_to_device:	JLink:	AP[1]: Skipped. Not an AHB-AP
    . . nRF52_connect_to_device:	JLink:	AP[1]: Skipped. Not an AHB-AP
    . . nRF52_connect_to_device:	JLink:	   ***** Error: 
    . . nRF52_connect_to_device:	JLink:	Could not find core in Coresight setup
    . . nRF52_connect_to_device:	JLink:	 >0x35 TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x0D TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x0D TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x0D TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x0D TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x35 TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x0D TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x0D TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x35 TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x35 TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x10B TIF>
    . . nRF52_connect_to_device:	JLink:	Found SW-DP with ID 0x2BA01477
    . . nRF52_connect_to_device:	JLink:	Found SW-DP with ID 0x2BA01477
    . . nRF52_connect_to_device:	JLink:	 >0x0D TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x28 TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x0D TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x28 TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x10B TIF>
    . . nRF52_connect_to_device:	JLink:	Found SW-DP with ID 0x2BA01477
    . . nRF52_connect_to_device:	JLink:	Found SW-DP with ID 0x2BA01477
    . . nRF52_connect_to_device:	JLink:	 >0x0D TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x28 TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x0D TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x28 TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x0D TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x28 TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x0D TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x28 TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x35 TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x0D TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x28 TIF>
    . . nRF52_connect_to_device:	JLink:	Scanning AP map to find all available APs
    . . nRF52_connect_to_device:	JLink:	Scanning AP map to find all available APs
    . . nRF52_connect_to_device:	JLink:	 >0x0D TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x28 TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x35 TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x35 TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x0D TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x28 TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x35 TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x35 TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x0D TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x28 TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x35 TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x35 TIF>
    . . nRF52_connect_to_device:	JLink:	AP[2]: Stopped AP scan as end of AP map has been reached
    . . nRF52_connect_to_device:	JLink:	AP[2]: Stopped AP scan as end of AP map has been reached
    . . nRF52_connect_to_device:	JLink:	AP[0]: AHB-AP (IDR: 0x24770011)
    . . nRF52_connect_to_device:	JLink:	AP[0]: AHB-AP (IDR: 0x24770011)
    . . nRF52_connect_to_device:	JLink:	AP[1]: JTAG-AP (IDR: 0x02880000)
    . . nRF52_connect_to_device:	JLink:	AP[1]: JTAG-AP (IDR: 0x02880000)
    . . nRF52_connect_to_device:	JLink:	Iterating through AP map to find AHB-AP to use
    . . nRF52_connect_to_device:	JLink:	Iterating through AP map to find AHB-AP to use
    . . nRF52_connect_to_device:	JLink:	 >0x42 TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x0D TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x35 TIF>
    . . nRF52_connect_to_device:	JLink:	 >0x35 TIF>
    . . nRF52_connect_to_device:	JLink:	AP[0]: Skipped. Could not read AHB ROM register
    . . nRF52_connect_to_device:	JLink:	AP[0]: Skipped. Could not read AHB ROM register
    . . nRF52_connect_to_device:	JLink:	AP[1]: Skipped. Not an AHB-AP
    . . nRF52_connect_to_device:	JLink:	AP[1]: Skipped. Not an AHB-AP
    . . nRF52_connect_to_device:	JLink:	  returns 0xFFFFFEFB
    . . nRF52_connect_to_device:	JLink:	 (0273ms, 0664ms total)  
    . . nRF52_connect_to_device:	JLink:	Could not find core in Coresight setup
    . . nRF52_connect_to_device:	JLinkARM.dll reported error ďż˝ at line 5652.
    
    . . nRF52_connect_to_device:	JLink:	TD1EE2740 002:196 
    . . nRF52_connect_to_device:	JLink:	JLINK_ClrError()
    . . nRF52_connect_to_device:	JLink:	 (0000ms, 0664ms total)  
    . . nRF52_connect_to_device:	JLinkARM.dll Connect returned error -261.
    
    nRF_close_dll
    . nRF52_close_dll
    . . nRF52_is_connected_to_emu
    . . nRF52_is_connected_to_emu:	JLink:	TD1EE2740 002:197 
    . . nRF52_is_connected_to_emu:	JLink:	JLINK_IsOpen()
    . . nRF52_is_connected_to_emu:	JLink:	  returns 0x01
    . . nRF52_is_connected_to_emu:	JLink:	 (0000ms, 0665ms total)  
    . . nRF52_disconnect_from_emu
    . . . nRF52_is_connected_to_device
    . . . nRF52_is_connected_to_device:	JLink:	TD1EE2740 002:197 
    . . . nRF52_is_connected_to_device:	JLink:	JLINK_IsConnected()
    . . . nRF52_is_connected_to_device:	JLink:	  returns FALSE
    . . . nRF52_is_connected_to_device:	JLink:	 (0000ms, 0665ms total)  
    . . . nRF52_unpower_debug_and_system_regions
    . . . . nRF52_write_debug_port_register
    . . . . nRF52_write_debug_port_register:	JLink:	TD1EE2740 002:197 
    . . . . nRF52_write_debug_port_register:	JLink:	JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x00000000)
    . . . . nRF52_write_debug_port_register:	JLink:	  returns 0
    . . . . nRF52_write_debug_port_register:	JLink:	 (0000ms, 0665ms total)  
    . . . . nRF52_write_debug_port_register:	JLink:	TD1EE2740 002:197 
    . . . . nRF52_write_debug_port_register:	JLink:	JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x01, 0x00000000)
    . . . . nRF52_write_debug_port_register:	JLink:	  returns 0
    . . . . nRF52_write_debug_port_register:	JLink:	 (0001ms, 0666ms total)  
    . . . . nRF52_read_debug_port_register
    . . . . nRF52_read_debug_port_register:	JLink:	TD1EE2740 002:198 
    . . . . nRF52_read_debug_port_register:	JLink:	JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x00000000)
    . . . . nRF52_read_debug_port_register:	JLink:	  returns 0
    . . . . nRF52_read_debug_port_register:	JLink:	 (0000ms, 0666ms total)  
    . . . . nRF52_read_debug_port_register:	JLink:	TD1EE2740 002:198 
    . . . . nRF52_read_debug_port_register:	JLink:	JLINK_CORESIGHT_ReadAPDPReg(DP reg 0x01)
    . . . . nRF52_read_debug_port_register:	JLink:	 -- Value=0x00000000
    . . . . nRF52_read_debug_port_register:	JLink:	  returns 0
    . . . . nRF52_read_debug_port_register:	JLink:	 (0000ms, 0666ms total)  
    . . nRF52_disconnect_from_emu:	JLink:	TD1EE2740 002:209 
    . . nRF52_disconnect_from_emu:	JLink:	JLINK_Close()
    

  • Did you enable pinreset? Can you try to connect the reset pin to vdd and run the recovery sequence again?

  • That did the trick, thank you. I connected P0.18 to Vdd and then J-Link connected to the board. Then I used 'nrfjprog' to erase the UICR, I did not run the full recovery. Now J-Link connects and the board is back working again without having to connect P0.18 to Vdd. Not sure why.

  • The board was stuck in reset state. Connecting the reset pin to vdd made sure it could exit the reset state.

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