nrfjprog suddenly stopped working but Jlink connection works

[asantos]

Hi,

I am using Segger Jlink with SWD interface

nrfjprog used to work perfectly fine for me but, suddenly, I cannot run any nrfjprog commands, I get the error JLinkARM DLL reported an error. 

Also, the nrfConnect programmer app cannot connect to my device anymore

My Jlink connection with the device is fine, I can connect to the device, see RTT output and debug

I think maybe a full erase of the device would help, but, how can I do it without nrfjprog or nrfConnect?

Here is the nrfjprog log:

2019-Jul-03 10:13:18  --------------------------------------------------------------------------------
2019-Jul-03 10:13:18  nrfjprog -f nrf52 --reset --log
2019-Jul-03 10:13:18  nrfjprog version 9.8.1
2019-Jul-03 10:13:18  --------------------------------------------------------------------------------
2019-Jul-03 10:13:18  nRF_open_dll
2019-Jul-03 10:13:18  . nRF52_open_dll
2019-Jul-03 10:13:18  . . nRF52_dll_version
2019-Jul-03 10:13:18  nRF_enum_emu_snr
2019-Jul-03 10:13:18  . nRF52_enum_emu_snr
2019-Jul-03 10:13:18  . . nRF52_enum_emu_snr
2019-Jul-03 10:13:18  nRF_enum_emu_snr
2019-Jul-03 10:13:18  . nRF52_enum_emu_snr
2019-Jul-03 10:13:18  . . nRF52_enum_emu_snr
2019-Jul-03 10:13:18  nRF_connect_to_emu_with_snr
2019-Jul-03 10:13:18  . nRF52_connect_to_emu_with_snr
2019-Jul-03 10:13:18  . . nRF52_is_connected_to_emu
2019-Jul-03 10:13:18  . . nRF52_enum_emu_snr
2019-Jul-03 10:13:18  . . nRF52_connect_to_emu_with_snr
2019-Jul-03 10:13:18  . . . nRF52_connect_to_emu_without_snr
2019-Jul-03 10:13:18  . . . nRF52_connect_to_emu_without_snr:	JLink:	 Firmware: J-Link V9 compiled Oct 25 2018 11:46:07
2019-Jul-03 10:13:18  . . . nRF52_connect_to_emu_without_snr:	JLink:	 Hardware: V9.40
2019-Jul-03 10:13:18  . . . nRF52_connect_to_emu_without_snr:	JLink:	 S/N: 59401919
2019-Jul-03 10:13:18  . . . nRF52_connect_to_emu_without_snr:	JLink:	 Feature(s): RDI, GDB, FlashDL, FlashBP, JFlash
2019-Jul-03 10:13:18  . . . nRF52_connect_to_emu_without_snr:	JLink:	 TELNET listener socket opened on port 19021
2019-Jul-03 10:13:18  . . . nRF52_connect_to_emu_without_snr:	JLink:	WEBSRV  Starting webserver
2019-Jul-03 10:13:18  . . . nRF52_connect_to_emu_without_snr:	JLink:	 (0023ms, 0025ms total)  
2019-Jul-03 10:13:18  . . . nRF52_connect_to_emu_without_snr:	JLink:	TAACC5C0 000:003 
2019-Jul-03 10:13:18  . . . nRF52_connect_to_emu_without_snr:	JLink:	WEBSRV Webserver running on local port 19081
2019-Jul-03 10:13:18  . . . nRF52_connect_to_emu_without_snr:	JLink:	 (0023ms, 0025ms total)  
2019-Jul-03 10:13:18  . . . nRF52_connect_to_emu_without_snr:	JLink:	TAACC5C0 000:003 
2019-Jul-03 10:13:18  . . . nRF52_connect_to_emu_without_snr:	JLink:	  returns O.K.
2019-Jul-03 10:13:18  . . . nRF52_connect_to_emu_without_snr:	JLink:	 (0023ms, 0025ms total)  
2019-Jul-03 10:13:18  . . . nRF52_connect_to_emu_without_snr:	JLink:	TAACC5C0 000:026 
2019-Jul-03 10:13:18  . . . nRF52_connect_to_emu_without_snr:	JLink:	JLINK_GetHWStatus(...)
2019-Jul-03 10:13:18  . . . nRF52_connect_to_emu_without_snr:	JLink:	  returns 0x00
2019-Jul-03 10:13:18  . . . nRF52_connect_to_emu_without_snr:	JLink:	 (0002ms, 0027ms total)  
2019-Jul-03 10:13:18  . . . nRF52_connect_to_emu_without_snr:	There is no generic nRF52 device in J-Link, so we select NRF52832_xxAA.

2019-Jul-03 10:13:18  . . . nRF52_connect_to_emu_without_snr:	JLink:	TAACC5C0 000:028 
2019-Jul-03 10:13:18  . . . nRF52_connect_to_emu_without_snr:	JLink:	JLINK_ExecCommand("Device = NRF52832_xxAA", ...). 
2019-Jul-03 10:13:18  . . . nRF52_connect_to_emu_without_snr:	JLink:	XML file found at: /Applications/SEGGER/JLink//JLinkDevices.xml
2019-Jul-03 10:13:18  . . . nRF52_connect_to_emu_without_snr:	JLink:	 (0000ms, 0027ms total)  
2019-Jul-03 10:13:18  . . . nRF52_connect_to_emu_without_snr:	JLink:	TAACC5C0 000:028 
2019-Jul-03 10:13:18  . . . nRF52_connect_to_emu_without_snr:	JLink:	/Applications/SEGGER/JLink/JLinkDevices.xml evaluated successfully.
2019-Jul-03 10:13:18  . . . nRF52_connect_to_emu_without_snr:	JLink:	Device "NRF52832_XXAA" selected.
2019-Jul-03 10:13:18  . . . nRF52_connect_to_emu_without_snr:	JLink:	Device "NRF52832_XXAA" selected.
2019-Jul-03 10:13:18  . . . nRF52_connect_to_emu_without_snr:	JLink:	  returns 0x00
2019-Jul-03 10:13:18  . . . nRF52_connect_to_emu_without_snr:	JLink:	 (0048ms, 0075ms total)  
2019-Jul-03 10:13:18  . . . nRF52_connect_to_emu_without_snr:	JLink:	TAACC5C0 000:076 
2019-Jul-03 10:13:18  . . . nRF52_connect_to_emu_without_snr:	JLink:	JLINK_ExecCommand("SetRestartOnClose = 0", ...). 
2019-Jul-03 10:13:18  . . . nRF52_connect_to_emu_without_snr:	JLink:	  returns 0x01
2019-Jul-03 10:13:18  . . . nRF52_connect_to_emu_without_snr:	JLink:	 (0000ms, 0076ms total)  
2019-Jul-03 10:13:18  . . . nRF52_connect_to_emu_without_snr:	JLink:	TAACC5C0 000:077 
2019-Jul-03 10:13:18  . . . nRF52_connect_to_emu_without_snr:	JLink:	JLINK_ExecCommand("DisableFlashDL", ...). 
2019-Jul-03 10:13:18  . . . nRF52_connect_to_emu_without_snr:	JLink:	  returns 0x00
2019-Jul-03 10:13:18  . . . nRF52_connect_to_emu_without_snr:	JLink:	 (0000ms, 0076ms total)  
2019-Jul-03 10:13:18  . . . nRF52_connect_to_emu_without_snr:	JLink:	TAACC5C0 000:077 
2019-Jul-03 10:13:18  . . . nRF52_connect_to_emu_without_snr:	JLink:	JLINK_ExecCommand("SetDbgPowerDownOnClose = 1", ...). 
2019-Jul-03 10:13:18  . . . nRF52_connect_to_emu_without_snr:	JLink:	  returns 0x01
2019-Jul-03 10:13:18  . . . nRF52_connect_to_emu_without_snr:	JLink:	 (0000ms, 0076ms total)  
2019-Jul-03 10:13:18  . . . nRF52_connect_to_emu_without_snr:	JLink:	TAACC5C0 000:077 
2019-Jul-03 10:13:18  . . . nRF52_connect_to_emu_without_snr:	JLink:	JLINK_ExecCommand("ExcludeFlashCacheRange 0x0-0xFFFFFFFF", ...). 
2019-Jul-03 10:13:18  . . . nRF52_connect_to_emu_without_snr:	JLink:	  returns 0x00
2019-Jul-03 10:13:18  . . . nRF52_connect_to_emu_without_snr:	JLink:	 (0000ms, 0077ms total)  
2019-Jul-03 10:13:18  . . . nRF52_connect_to_emu_without_snr:	JLink:	TAACC5C0 000:078 
2019-Jul-03 10:13:18  . . . nRF52_connect_to_emu_without_snr:	JLink:	JLINK_TIF_Select(JLINKARM_TIF_SWD)
2019-Jul-03 10:13:18  . . . nRF52_connect_to_emu_without_snr:	JLink:	  returns 0x00
2019-Jul-03 10:13:18  . . . nRF52_connect_to_emu_without_snr:	JLink:	 (0002ms, 0079ms total)  
2019-Jul-03 10:13:18  . . . nRF52_connect_to_emu_without_snr:	JLink:	TAACC5C0 000:080 
2019-Jul-03 10:13:18  . . . nRF52_connect_to_emu_without_snr:	JLink:	JLINK_SetSpeed(2000)
2019-Jul-03 10:13:18  . . . nRF52_connect_to_emu_without_snr:	JLink:	 (0002ms, 0081ms total)  
2019-Jul-03 10:13:18  nRF_read_device_version
2019-Jul-03 10:13:18  . nRF52_read_device_version
2019-Jul-03 10:13:18  . . nRF52_is_connected_to_emu
2019-Jul-03 10:13:18  . . nRF52_is_connected_to_emu:	JLink:	TAACC5C0 000:083 
2019-Jul-03 10:13:18  . . nRF52_is_connected_to_emu:	JLink:	JLINK_IsOpen()
2019-Jul-03 10:13:18  . . nRF52_is_connected_to_emu:	JLink:	  returns 0x01
2019-Jul-03 10:13:18  . . nRF52_is_connected_to_emu:	JLink:	 (0001ms, 0082ms total)  
2019-Jul-03 10:13:18  . . nRF52_is_connected_to_device
2019-Jul-03 10:13:18  . . nRF52_is_connected_to_device:	JLink:	TAACC5C0 000:084 
2019-Jul-03 10:13:18  . . nRF52_is_connected_to_device:	JLink:	JLINK_IsConnected()
2019-Jul-03 10:13:18  . . nRF52_is_connected_to_device:	JLink:	  returns FALSE
2019-Jul-03 10:13:18  . . nRF52_is_connected_to_device:	JLink:	 (0000ms, 0082ms total)  
2019-Jul-03 10:13:18  . . nRF52_readback_status
2019-Jul-03 10:13:18  . . . nRF52_is_ctrl_ap_available
2019-Jul-03 10:13:18  . . . . nRF52_read_access_port_register
2019-Jul-03 10:13:18  . . . . . nRF52_coresight_configure
2019-Jul-03 10:13:18  . . . . . nRF52_coresight_configure:	JLink:	TAACC5C0 000:084 
2019-Jul-03 10:13:18  . . . . . nRF52_coresight_configure:	JLink:	JLINK_CORESIGHT_Configure()
2019-Jul-03 10:13:18  . . . . . nRF52_coresight_configure:	JLink:	  returns 0
2019-Jul-03 10:13:18  . . . . . nRF52_coresight_configure:	JLink:	 (0101ms, 0183ms total)  
2019-Jul-03 10:13:18  . . . . . nRF52_power_debug_and_system_regions
2019-Jul-03 10:13:18  . . . . . . nRF52_write_debug_port_register
2019-Jul-03 10:13:18  . . . . . . nRF52_write_debug_port_register:	JLink:	TAACC5C0 000:185 
2019-Jul-03 10:13:18  . . . . . . nRF52_write_debug_port_register:	JLink:	JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x00000000)
2019-Jul-03 10:13:18  . . . . . . nRF52_write_debug_port_register:	JLink:	  returns -1
2019-Jul-03 10:13:18  . . . . . . nRF52_write_debug_port_register:	JLink:	 (0002ms, 0185ms total)  
2019-Jul-03 10:13:18  . . . . . . nRF52_write_debug_port_register:	JLinkARM.dll CORESIGHT_WriteAPDPReg returned error -1.

2019-Jul-03 10:13:18  . . . . . nRF52_power_debug_and_system_regions:	JLinkARM.dll CORESIGHT_WriteAPDPReg returned error -102.

2019-Jul-03 10:13:18  nRF_close_dll
2019-Jul-03 10:13:18  . nRF52_close_dll
2019-Jul-03 10:13:18  . . nRF52_is_connected_to_emu
2019-Jul-03 10:13:18  . . nRF52_is_connected_to_emu:	JLink:	TAACC5C0 000:187 
2019-Jul-03 10:13:18  . . nRF52_is_connected_to_emu:	JLink:	JLINK_IsOpen()
2019-Jul-03 10:13:18  . . nRF52_is_connected_to_emu:	JLink:	  returns 0x01
2019-Jul-03 10:13:18  . . nRF52_is_connected_to_emu:	JLink:	 (0000ms, 0185ms total)  
2019-Jul-03 10:13:18  . . nRF52_disconnect_from_emu
2019-Jul-03 10:13:18  . . . nRF52_is_connected_to_device
2019-Jul-03 10:13:18  . . . nRF52_is_connected_to_device:	JLink:	TAACC5C0 000:188 
2019-Jul-03 10:13:18  . . . nRF52_is_connected_to_device:	JLink:	JLINK_IsConnected()
2019-Jul-03 10:13:18  . . . nRF52_is_connected_to_device:	JLink:	  returns FALSE
2019-Jul-03 10:13:18  . . . nRF52_is_connected_to_device:	JLink:	 (0000ms, 0186ms total)  
2019-Jul-03 10:13:18  . . . nRF52_unpower_debug_and_system_regions
2019-Jul-03 10:13:18  . . nRF52_disconnect_from_emu:	JLink:	TAACC5C0 000:201 
2019-Jul-03 10:13:18  . . nRF52_disconnect_from_emu:	JLink:	JLINK_Close()
2019-Jul-03 10:13:46  --------------------------------------------------------------------------------
2019-Jul-03 10:13:46  nrfjprog -f nrf52 --reset --log
2019-Jul-03 10:13:46  nrfjprog version 9.8.1
2019-Jul-03 10:13:46  --------------------------------------------------------------------------------
2019-Jul-03 10:13:46  nRF_open_dll
2019-Jul-03 10:13:46  . nRF52_open_dll
2019-Jul-03 10:13:46  . . nRF52_dll_version
2019-Jul-03 10:13:46  nRF_enum_emu_snr
2019-Jul-03 10:13:46  . nRF52_enum_emu_snr
2019-Jul-03 10:13:46  . . nRF52_enum_emu_snr
2019-Jul-03 10:13:46  nRF_enum_emu_snr
2019-Jul-03 10:13:46  . nRF52_enum_emu_snr
2019-Jul-03 10:13:46  . . nRF52_enum_emu_snr
2019-Jul-03 10:13:46  nRF_connect_to_emu_with_snr
2019-Jul-03 10:13:46  . nRF52_connect_to_emu_with_snr
2019-Jul-03 10:13:46  . . nRF52_is_connected_to_emu
2019-Jul-03 10:13:46  . . nRF52_enum_emu_snr
2019-Jul-03 10:13:46  . . nRF52_connect_to_emu_with_snr
2019-Jul-03 10:13:46  . . . nRF52_connect_to_emu_without_snr
2019-Jul-03 10:13:46  . . . nRF52_connect_to_emu_without_snr:	JLink:	 Firmware: J-Link V9 compiled Oct 25 2018 11:46:07
2019-Jul-03 10:13:46  . . . nRF52_connect_to_emu_without_snr:	JLink:	 Hardware: V9.40
2019-Jul-03 10:13:46  . . . nRF52_connect_to_emu_without_snr:	JLink:	 S/N: 59401919
2019-Jul-03 10:13:46  . . . nRF52_connect_to_emu_without_snr:	JLink:	 Feature(s): RDI, GDB, FlashDL, FlashBP, JFlash
2019-Jul-03 10:13:46  . . . nRF52_connect_to_emu_without_snr:	JLink:	 TELNET listener socket opened on port 19021
2019-Jul-03 10:13:46  . . . nRF52_connect_to_emu_without_snr:	JLink:	WEBSRV  Starting webserver
2019-Jul-03 10:13:46  . . . nRF52_connect_to_emu_without_snr:	JLink:	 (0026ms, 0029ms total)  
2019-Jul-03 10:13:46  . . . nRF52_connect_to_emu_without_snr:	JLink:	TB9CA5C0 000:003 
2019-Jul-03 10:13:46  . . . nRF52_connect_to_emu_without_snr:	JLink:	WEBSRV Webserver running on local port 19081
2019-Jul-03 10:13:46  . . . nRF52_connect_to_emu_without_snr:	JLink:	 (0026ms, 0029ms total)  
2019-Jul-03 10:13:46  . . . nRF52_connect_to_emu_without_snr:	JLink:	TB9CA5C0 000:003 
2019-Jul-03 10:13:46  . . . nRF52_connect_to_emu_without_snr:	JLink:	  returns O.K.
2019-Jul-03 10:13:46  . . . nRF52_connect_to_emu_without_snr:	JLink:	 (0026ms, 0029ms total)  
2019-Jul-03 10:13:46  . . . nRF52_connect_to_emu_without_snr:	JLink:	TB9CA5C0 000:029 
2019-Jul-03 10:13:46  . . . nRF52_connect_to_emu_without_snr:	JLink:	JLINK_GetHWStatus(...)
2019-Jul-03 10:13:46  . . . nRF52_connect_to_emu_without_snr:	JLink:	  returns 0x00
2019-Jul-03 10:13:46  . . . nRF52_connect_to_emu_without_snr:	JLink:	 (0002ms, 0031ms total)  
2019-Jul-03 10:13:46  . . . nRF52_connect_to_emu_without_snr:	There is no generic nRF52 device in J-Link, so we select NRF52832_xxAA.

2019-Jul-03 10:13:46  . . . nRF52_connect_to_emu_without_snr:	JLink:	TB9CA5C0 000:031 
2019-Jul-03 10:13:46  . . . nRF52_connect_to_emu_without_snr:	JLink:	JLINK_ExecCommand("Device = NRF52832_xxAA", ...). 
2019-Jul-03 10:13:46  . . . nRF52_connect_to_emu_without_snr:	JLink:	XML file found at: /Applications/SEGGER/JLink//JLinkDevices.xml
2019-Jul-03 10:13:46  . . . nRF52_connect_to_emu_without_snr:	JLink:	 (0001ms, 0032ms total)  
2019-Jul-03 10:13:46  . . . nRF52_connect_to_emu_without_snr:	JLink:	TB9CA5C0 000:031 
2019-Jul-03 10:13:46  . . . nRF52_connect_to_emu_without_snr:	JLink:	/Applications/SEGGER/JLink/JLinkDevices.xml evaluated successfully.
2019-Jul-03 10:13:46  . . . nRF52_connect_to_emu_without_snr:	JLink:	Device "NRF52832_XXAA" selected.
2019-Jul-03 10:13:46  . . . nRF52_connect_to_emu_without_snr:	JLink:	Device "NRF52832_XXAA" selected.
2019-Jul-03 10:13:46  . . . nRF52_connect_to_emu_without_snr:	JLink:	  returns 0x00
2019-Jul-03 10:13:46  . . . nRF52_connect_to_emu_without_snr:	JLink:	 (0048ms, 0079ms total)  
2019-Jul-03 10:13:46  . . . nRF52_connect_to_emu_without_snr:	JLink:	TB9CA5C0 000:079 
2019-Jul-03 10:13:46  . . . nRF52_connect_to_emu_without_snr:	JLink:	JLINK_ExecCommand("SetRestartOnClose = 0", ...). 
2019-Jul-03 10:13:46  . . . nRF52_connect_to_emu_without_snr:	JLink:	  returns 0x01
2019-Jul-03 10:13:46  . . . nRF52_connect_to_emu_without_snr:	JLink:	 (0000ms, 0079ms total)  
2019-Jul-03 10:13:46  . . . nRF52_connect_to_emu_without_snr:	JLink:	TB9CA5C0 000:079 
2019-Jul-03 10:13:46  . . . nRF52_connect_to_emu_without_snr:	JLink:	JLINK_ExecCommand("DisableFlashDL", ...). 
2019-Jul-03 10:13:46  . . . nRF52_connect_to_emu_without_snr:	JLink:	  returns 0x00
2019-Jul-03 10:13:46  . . . nRF52_connect_to_emu_without_snr:	JLink:	 (0000ms, 0079ms total)  
2019-Jul-03 10:13:46  . . . nRF52_connect_to_emu_without_snr:	JLink:	TB9CA5C0 000:080 
2019-Jul-03 10:13:46  . . . nRF52_connect_to_emu_without_snr:	JLink:	JLINK_ExecCommand("SetDbgPowerDownOnClose = 1", ...). 
2019-Jul-03 10:13:46  . . . nRF52_connect_to_emu_without_snr:	JLink:	  returns 0x01
2019-Jul-03 10:13:46  . . . nRF52_connect_to_emu_without_snr:	JLink:	 (0000ms, 0080ms total)  
2019-Jul-03 10:13:46  . . . nRF52_connect_to_emu_without_snr:	JLink:	TB9CA5C0 000:080 
2019-Jul-03 10:13:46  . . . nRF52_connect_to_emu_without_snr:	JLink:	JLINK_ExecCommand("ExcludeFlashCacheRange 0x0-0xFFFFFFFF", ...). 
2019-Jul-03 10:13:46  . . . nRF52_connect_to_emu_without_snr:	JLink:	  returns 0x00
2019-Jul-03 10:13:46  . . . nRF52_connect_to_emu_without_snr:	JLink:	 (0000ms, 0080ms total)  
2019-Jul-03 10:13:46  . . . nRF52_connect_to_emu_without_snr:	JLink:	TB9CA5C0 000:080 
2019-Jul-03 10:13:46  . . . nRF52_connect_to_emu_without_snr:	JLink:	JLINK_TIF_Select(JLINKARM_TIF_SWD)
2019-Jul-03 10:13:46  . . . nRF52_connect_to_emu_without_snr:	JLink:	  returns 0x00
2019-Jul-03 10:13:46  . . . nRF52_connect_to_emu_without_snr:	JLink:	 (0004ms, 0084ms total)  
2019-Jul-03 10:13:46  . . . nRF52_connect_to_emu_without_snr:	JLink:	TB9CA5C0 000:084 
2019-Jul-03 10:13:46  . . . nRF52_connect_to_emu_without_snr:	JLink:	JLINK_SetSpeed(2000)
2019-Jul-03 10:13:46  . . . nRF52_connect_to_emu_without_snr:	JLink:	 (0001ms, 0085ms total)  
2019-Jul-03 10:13:46  nRF_read_device_version
2019-Jul-03 10:13:46  . nRF52_read_device_version
2019-Jul-03 10:13:46  . . nRF52_is_connected_to_emu
2019-Jul-03 10:13:46  . . nRF52_is_connected_to_emu:	JLink:	TB9CA5C0 000:086 
2019-Jul-03 10:13:46  . . nRF52_is_connected_to_emu:	JLink:	JLINK_IsOpen()
2019-Jul-03 10:13:46  . . nRF52_is_connected_to_emu:	JLink:	  returns 0x01
2019-Jul-03 10:13:46  . . nRF52_is_connected_to_emu:	JLink:	 (0000ms, 0085ms total)  
2019-Jul-03 10:13:46  . . nRF52_is_connected_to_device
2019-Jul-03 10:13:46  . . nRF52_is_connected_to_device:	JLink:	TB9CA5C0 000:086 
2019-Jul-03 10:13:46  . . nRF52_is_connected_to_device:	JLink:	JLINK_IsConnected()
2019-Jul-03 10:13:46  . . nRF52_is_connected_to_device:	JLink:	  returns FALSE
2019-Jul-03 10:13:46  . . nRF52_is_connected_to_device:	JLink:	 (0000ms, 0085ms total)  
2019-Jul-03 10:13:46  . . nRF52_readback_status
2019-Jul-03 10:13:46  . . . nRF52_is_ctrl_ap_available
2019-Jul-03 10:13:46  . . . . nRF52_read_access_port_register
2019-Jul-03 10:13:46  . . . . . nRF52_coresight_configure
2019-Jul-03 10:13:46  . . . . . nRF52_coresight_configure:	JLink:	TB9CA5C0 000:086 
2019-Jul-03 10:13:46  . . . . . nRF52_coresight_configure:	JLink:	JLINK_CORESIGHT_Configure()
2019-Jul-03 10:13:46  . . . . . nRF52_coresight_configure:	JLink:	  returns 0
2019-Jul-03 10:13:46  . . . . . nRF52_coresight_configure:	JLink:	 (0105ms, 0190ms total)  
2019-Jul-03 10:13:46  . . . . . nRF52_power_debug_and_system_regions
2019-Jul-03 10:13:46  . . . . . . nRF52_write_debug_port_register
2019-Jul-03 10:13:46  . . . . . . nRF52_write_debug_port_register:	JLink:	TB9CA5C0 000:191 
2019-Jul-03 10:13:46  . . . . . . nRF52_write_debug_port_register:	JLink:	JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x00000000)
2019-Jul-03 10:13:46  . . . . . . nRF52_write_debug_port_register:	JLink:	  returns -1
2019-Jul-03 10:13:46  . . . . . . nRF52_write_debug_port_register:	JLink:	 (0002ms, 0192ms total)  
2019-Jul-03 10:13:46  . . . . . . nRF52_write_debug_port_register:	JLinkARM.dll CORESIGHT_WriteAPDPReg returned error -1.

2019-Jul-03 10:13:46  . . . . . nRF52_power_debug_and_system_regions:	JLinkARM.dll CORESIGHT_WriteAPDPReg returned error -102.

2019-Jul-03 10:13:46  nRF_close_dll
2019-Jul-03 10:13:46  . nRF52_close_dll
2019-Jul-03 10:13:46  . . nRF52_is_connected_to_emu
2019-Jul-03 10:13:46  . . nRF52_is_connected_to_emu:	JLink:	TB9CA5C0 000:194 
2019-Jul-03 10:13:46  . . nRF52_is_connected_to_emu:	JLink:	JLINK_IsOpen()
2019-Jul-03 10:13:46  . . nRF52_is_connected_to_emu:	JLink:	  returns 0x01
2019-Jul-03 10:13:46  . . nRF52_is_connected_to_emu:	JLink:	 (0000ms, 0192ms total)  
2019-Jul-03 10:13:46  . . nRF52_disconnect_from_emu
2019-Jul-03 10:13:46  . . . nRF52_is_connected_to_device
2019-Jul-03 10:13:46  . . . nRF52_is_connected_to_device:	JLink:	TB9CA5C0 000:194 
2019-Jul-03 10:13:46  . . . nRF52_is_connected_to_device:	JLink:	JLINK_IsConnected()
2019-Jul-03 10:13:46  . . . nRF52_is_connected_to_device:	JLink:	  returns FALSE
2019-Jul-03 10:13:46  . . . nRF52_is_connected_to_device:	JLink:	 (0000ms, 0192ms total)  
2019-Jul-03 10:13:46  . . . nRF52_unpower_debug_and_system_regions
2019-Jul-03 10:13:46  . . nRF52_disconnect_from_emu:	JLink:	TB9CA5C0 000:205 
2019-Jul-03 10:13:46  . . nRF52_disconnect_from_emu:	JLink:	JLINK_Close()

Thanks

[Simon]

Have you seen this and this case? Which are quite similar as your

This case also presents some possible solutions.

Best regards,

Simon

[asantos]

Hi Simon,

I checked your links but unfortunately they were of no help...

JLink is connected and I am able to program the device with JLink commander, however, nrfjprog cannot connect to the device.

This issue only happens with one of the boards, I have other boards here and they all work fine with nrfjprog. This board that fails now was working properly before as well

I tried the recover command and I get the following log:

2019-Jul-08 14:22:25  --------------------------------------------------------------------------------
2019-Jul-08 14:22:25  nrfjprog -f nrf52 --recover --log
2019-Jul-08 14:22:25  nrfjprog version 9.8.1
2019-Jul-08 14:22:25  --------------------------------------------------------------------------------
2019-Jul-08 14:22:25  nRF_open_dll
2019-Jul-08 14:22:25  . nRF52_open_dll
2019-Jul-08 14:22:25  . . nRF52_dll_version
2019-Jul-08 14:22:25  nRF_enum_emu_snr
2019-Jul-08 14:22:25  . nRF52_enum_emu_snr
2019-Jul-08 14:22:25  . . nRF52_enum_emu_snr
2019-Jul-08 14:22:25  nRF_enum_emu_snr
2019-Jul-08 14:22:25  . nRF52_enum_emu_snr
2019-Jul-08 14:22:25  . . nRF52_enum_emu_snr
2019-Jul-08 14:22:25  nRF_connect_to_emu_with_snr
2019-Jul-08 14:22:25  . nRF52_connect_to_emu_with_snr
2019-Jul-08 14:22:25  . . nRF52_is_connected_to_emu
2019-Jul-08 14:22:25  . . nRF52_enum_emu_snr
2019-Jul-08 14:22:25  . . nRF52_connect_to_emu_with_snr
2019-Jul-08 14:22:25  . . . nRF52_connect_to_emu_without_snr
2019-Jul-08 14:22:25  . . . nRF52_connect_to_emu_without_snr:	JLink:	 Firmware: J-Link V9 compiled Oct 25 2018 11:46:07
2019-Jul-08 14:22:25  . . . nRF52_connect_to_emu_without_snr:	JLink:	 Hardware: V9.40
2019-Jul-08 14:22:25  . . . nRF52_connect_to_emu_without_snr:	JLink:	 S/N: 59401919
2019-Jul-08 14:22:25  . . . nRF52_connect_to_emu_without_snr:	JLink:	 Feature(s): RDI, GDB, FlashDL, FlashBP, JFlash
2019-Jul-08 14:22:25  . . . nRF52_connect_to_emu_without_snr:	JLink:	 TELNET listener socket opened on port 19021
2019-Jul-08 14:22:25  . . . nRF52_connect_to_emu_without_snr:	JLink:	WEBSRV  Starting webserver
2019-Jul-08 14:22:25  . . . nRF52_connect_to_emu_without_snr:	JLink:	 (0028ms, 0032ms total)  
2019-Jul-08 14:22:25  . . . nRF52_connect_to_emu_without_snr:	JLink:	TDC6F5C0 000:005 
2019-Jul-08 14:22:25  . . . nRF52_connect_to_emu_without_snr:	JLink:	WEBSRV Webserver running on local port 19081
2019-Jul-08 14:22:25  . . . nRF52_connect_to_emu_without_snr:	JLink:	 (0029ms, 0033ms total)  
2019-Jul-08 14:22:25  . . . nRF52_connect_to_emu_without_snr:	JLink:	TDC6F5C0 000:005 
2019-Jul-08 14:22:25  . . . nRF52_connect_to_emu_without_snr:	JLink:	  returns O.K.
2019-Jul-08 14:22:25  . . . nRF52_connect_to_emu_without_snr:	JLink:	 (0029ms, 0033ms total)  
2019-Jul-08 14:22:25  . . . nRF52_connect_to_emu_without_snr:	JLink:	TDC6F5C0 000:034 
2019-Jul-08 14:22:25  . . . nRF52_connect_to_emu_without_snr:	JLink:	JLINK_GetHWStatus(...)
2019-Jul-08 14:22:25  . . . nRF52_connect_to_emu_without_snr:	JLink:	  returns 0x00
2019-Jul-08 14:22:25  . . . nRF52_connect_to_emu_without_snr:	JLink:	 (0000ms, 0033ms total)  
2019-Jul-08 14:22:25  . . . nRF52_connect_to_emu_without_snr:	There is no generic nRF52 device in J-Link, so we select NRF52832_xxAA.

2019-Jul-08 14:22:25  . . . nRF52_connect_to_emu_without_snr:	JLink:	TDC6F5C0 000:035 
2019-Jul-08 14:22:25  . . . nRF52_connect_to_emu_without_snr:	JLink:	JLINK_ExecCommand("Device = NRF52832_xxAA", ...). 
2019-Jul-08 14:22:25  . . . nRF52_connect_to_emu_without_snr:	JLink:	XML file found at: /Applications/SEGGER/JLink//JLinkDevices.xml
2019-Jul-08 14:22:25  . . . nRF52_connect_to_emu_without_snr:	JLink:	 (0000ms, 0034ms total)  
2019-Jul-08 14:22:25  . . . nRF52_connect_to_emu_without_snr:	JLink:	TDC6F5C0 000:035 
2019-Jul-08 14:22:25  . . . nRF52_connect_to_emu_without_snr:	JLink:	/Applications/SEGGER/JLink/JLinkDevices.xml evaluated successfully.
2019-Jul-08 14:22:25  . . . nRF52_connect_to_emu_without_snr:	JLink:	Device "NRF52832_XXAA" selected.
2019-Jul-08 14:22:25  . . . nRF52_connect_to_emu_without_snr:	JLink:	Device "NRF52832_XXAA" selected.
2019-Jul-08 14:22:25  . . . nRF52_connect_to_emu_without_snr:	JLink:	  returns 0x00
2019-Jul-08 14:22:25  . . . nRF52_connect_to_emu_without_snr:	JLink:	 (0070ms, 0104ms total)  
2019-Jul-08 14:22:25  . . . nRF52_connect_to_emu_without_snr:	JLink:	TDC6F5C0 000:105 
2019-Jul-08 14:22:25  . . . nRF52_connect_to_emu_without_snr:	JLink:	JLINK_ExecCommand("SetRestartOnClose = 0", ...). 
2019-Jul-08 14:22:25  . . . nRF52_connect_to_emu_without_snr:	JLink:	  returns 0x01
2019-Jul-08 14:22:25  . . . nRF52_connect_to_emu_without_snr:	JLink:	 (0000ms, 0104ms total)  
2019-Jul-08 14:22:25  . . . nRF52_connect_to_emu_without_snr:	JLink:	TDC6F5C0 000:105 
2019-Jul-08 14:22:25  . . . nRF52_connect_to_emu_without_snr:	JLink:	JLINK_ExecCommand("DisableFlashDL", ...). 
2019-Jul-08 14:22:25  . . . nRF52_connect_to_emu_without_snr:	JLink:	  returns 0x00
2019-Jul-08 14:22:25  . . . nRF52_connect_to_emu_without_snr:	JLink:	 (0000ms, 0104ms total)  
2019-Jul-08 14:22:25  . . . nRF52_connect_to_emu_without_snr:	JLink:	TDC6F5C0 000:105 
2019-Jul-08 14:22:25  . . . nRF52_connect_to_emu_without_snr:	JLink:	JLINK_ExecCommand("SetDbgPowerDownOnClose = 1", ...). 
2019-Jul-08 14:22:25  . . . nRF52_connect_to_emu_without_snr:	JLink:	  returns 0x01
2019-Jul-08 14:22:25  . . . nRF52_connect_to_emu_without_snr:	JLink:	 (0000ms, 0105ms total)  
2019-Jul-08 14:22:25  . . . nRF52_connect_to_emu_without_snr:	JLink:	TDC6F5C0 000:106 
2019-Jul-08 14:22:25  . . . nRF52_connect_to_emu_without_snr:	JLink:	JLINK_ExecCommand("ExcludeFlashCacheRange 0x0-0xFFFFFFFF", ...). 
2019-Jul-08 14:22:25  . . . nRF52_connect_to_emu_without_snr:	JLink:	  returns 0x00
2019-Jul-08 14:22:25  . . . nRF52_connect_to_emu_without_snr:	JLink:	 (0000ms, 0105ms total)  
2019-Jul-08 14:22:25  . . . nRF52_connect_to_emu_without_snr:	JLink:	TDC6F5C0 000:106 
2019-Jul-08 14:22:25  . . . nRF52_connect_to_emu_without_snr:	JLink:	JLINK_TIF_Select(JLINKARM_TIF_SWD)
2019-Jul-08 14:22:25  . . . nRF52_connect_to_emu_without_snr:	JLink:	  returns 0x00
2019-Jul-08 14:22:25  . . . nRF52_connect_to_emu_without_snr:	JLink:	 (0003ms, 0108ms total)  
2019-Jul-08 14:22:25  . . . nRF52_connect_to_emu_without_snr:	JLink:	TDC6F5C0 000:110 
2019-Jul-08 14:22:25  . . . nRF52_connect_to_emu_without_snr:	JLink:	JLINK_SetSpeed(2000)
2019-Jul-08 14:22:25  . . . nRF52_connect_to_emu_without_snr:	JLink:	 (0000ms, 0109ms total)  
2019-Jul-08 14:22:25  nRF_recover
2019-Jul-08 14:22:25  . nRF52_recover
2019-Jul-08 14:22:25  . . nRF52_is_connected_to_emu
2019-Jul-08 14:22:25  . . nRF52_is_connected_to_emu:	JLink:	TDC6F5C0 000:110 
2019-Jul-08 14:22:25  . . nRF52_is_connected_to_emu:	JLink:	JLINK_IsOpen()
2019-Jul-08 14:22:25  . . nRF52_is_connected_to_emu:	JLink:	  returns 0x01
2019-Jul-08 14:22:25  . . nRF52_is_connected_to_emu:	JLink:	 (0000ms, 0109ms total)  
2019-Jul-08 14:22:25  . . nRF52_is_connected_to_device
2019-Jul-08 14:22:25  . . nRF52_is_connected_to_device:	JLink:	TDC6F5C0 000:111 
2019-Jul-08 14:22:25  . . nRF52_is_connected_to_device:	JLink:	JLINK_IsConnected()
2019-Jul-08 14:22:25  . . nRF52_is_connected_to_device:	JLink:	  returns FALSE
2019-Jul-08 14:22:25  . . nRF52_is_connected_to_device:	JLink:	 (0000ms, 0110ms total)  
2019-Jul-08 14:22:25  . . nRF52_readback_status
2019-Jul-08 14:22:25  . . . nRF52_is_ctrl_ap_available
2019-Jul-08 14:22:25  . . . . nRF52_read_access_port_register
2019-Jul-08 14:22:25  . . . . . nRF52_coresight_configure
2019-Jul-08 14:22:25  . . . . . nRF52_coresight_configure:	JLink:	TDC6F5C0 000:111 
2019-Jul-08 14:22:25  . . . . . nRF52_coresight_configure:	JLink:	JLINK_CORESIGHT_Configure()
2019-Jul-08 14:22:26  . . . . . nRF52_coresight_configure:	JLink:	  returns 0
2019-Jul-08 14:22:26  . . . . . nRF52_coresight_configure:	JLink:	 (0101ms, 0211ms total)  
2019-Jul-08 14:22:26  . . . . . nRF52_power_debug_and_system_regions
2019-Jul-08 14:22:26  . . . . . . nRF52_write_debug_port_register
2019-Jul-08 14:22:26  . . . . . . nRF52_write_debug_port_register:	JLink:	TDC6F5C0 000:212 
2019-Jul-08 14:22:26  . . . . . . nRF52_write_debug_port_register:	JLink:	JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x00000000)
2019-Jul-08 14:22:26  . . . . . . nRF52_write_debug_port_register:	JLink:	  returns -1
2019-Jul-08 14:22:26  . . . . . . nRF52_write_debug_port_register:	JLink:	 (0012ms, 0223ms total)  
2019-Jul-08 14:22:26  . . . . . . nRF52_write_debug_port_register:	JLinkARM.dll CORESIGHT_WriteAPDPReg returned error -1.

2019-Jul-08 14:22:26  . . . . . nRF52_power_debug_and_system_regions:	JLinkARM.dll CORESIGHT_WriteAPDPReg returned error -102.

2019-Jul-08 14:22:26  nRF_close_dll
2019-Jul-08 14:22:26  . nRF52_close_dll
2019-Jul-08 14:22:26  . . nRF52_is_connected_to_emu
2019-Jul-08 14:22:26  . . nRF52_is_connected_to_emu:	JLink:	TDC6F5C0 000:225 
2019-Jul-08 14:22:26  . . nRF52_is_connected_to_emu:	JLink:	JLINK_IsOpen()
2019-Jul-08 14:22:26  . . nRF52_is_connected_to_emu:	JLink:	  returns 0x01
2019-Jul-08 14:22:26  . . nRF52_is_connected_to_emu:	JLink:	 (0000ms, 0223ms total)  
2019-Jul-08 14:22:26  . . nRF52_disconnect_from_emu
2019-Jul-08 14:22:26  . . . nRF52_is_connected_to_device
2019-Jul-08 14:22:26  . . . nRF52_is_connected_to_device:	JLink:	TDC6F5C0 000:225 
2019-Jul-08 14:22:26  . . . nRF52_is_connected_to_device:	JLink:	JLINK_IsConnected()
2019-Jul-08 14:22:26  . . . nRF52_is_connected_to_device:	JLink:	  returns FALSE
2019-Jul-08 14:22:26  . . . nRF52_is_connected_to_device:	JLink:	 (0000ms, 0223ms total)  
2019-Jul-08 14:22:26  . . . nRF52_unpower_debug_and_system_regions
2019-Jul-08 14:22:26  . . nRF52_disconnect_from_emu:	JLink:	TDC6F5C0 000:228 
2019-Jul-08 14:22:26  . . nRF52_disconnect_from_emu:	JLink:	JLINK_Close()

Thanks

[Simon]

Since it only happens with one of the boards, I assume it is an hardware issue. I looked around and found some possible solutions:

• Reupload J-Link firmware:
  • https://devzone.nordicsemi.com/f/nordic-q-a/34755/jlinkarm-dll-reported-an-error
• Processor ignoring SWD commands, make sure reset is connected:
  • https://devzone.nordicsemi.com/f/nordic-q-a/29535/nrf52-locked-can-t-recover
• How do you power device?
  • https://devzone.nordicsemi.com/f/nordic-q-a/34638/nrf52840-pdk-to-external-board-programming
  • https://devzone.nordicsemi.com/f/nordic-q-a/20314/error-jlinkarm-dll-reported-an-error-try-again
• Did you cut SB9 for current measurement?
  • https://devzone.nordicsemi.com/f/nordic-q-a/37027/nrf52-dk-jlinkarm-dll-reported-an-error
  • https://devzone.nordicsemi.com/f/nordic-q-a/17004/nrfprog-coresight_writeapdpreg-returned-error--1
• Have you connected the debugger correctly?
  • https://devzone.nordicsemi.com/f/nordic-q-a/22504/nrfjprog-9-4-0---recover-fails-on-custom-board
• Make sure there is common ground between programmer and 52 module, and that VTARGET is connected to module:
  • https://devzone.nordicsemi.com/f/nordic-q-a/32737/nrf52832-was-it-broken

Best regards,

Simon