<?xml version="1.0" encoding="UTF-8" ?>
<?xml-stylesheet type="text/xsl" href="https://devzone.nordicsemi.com/cfs-file/__key/system/syndication/rss.xsl" media="screen"?><rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:slash="http://purl.org/rss/1.0/modules/slash/" xmlns:wfw="http://wellformedweb.org/CommentAPI/" xmlns:atom="http://www.w3.org/2005/Atom"><channel><title>Unable to find or open JLinkARM.dll after wrong p20 SWD connection</title><link>https://devzone.nordicsemi.com/f/nordic-q-a/60637/unable-to-find-or-open-jlinkarm-dll-after-wrong-p20-swd-connection</link><description>Hi all, i have two units of a custom board project that i made. 
 In the first board, I plugged the pins in the right position as you can see in the figure below, a). nRFgo find the board, and i can program it normally. 
 However, in the second board</description><dc:language>en-US</dc:language><generator>Telligent Community 13</generator><lastBuildDate>Mon, 27 Apr 2020 13:56:18 GMT</lastBuildDate><atom:link rel="self" type="application/rss+xml" href="https://devzone.nordicsemi.com/f/nordic-q-a/60637/unable-to-find-or-open-jlinkarm-dll-after-wrong-p20-swd-connection" /><item><title>RE: Unable to find or open JLinkARM.dll after wrong p20 SWD connection</title><link>https://devzone.nordicsemi.com/thread/246894?ContentTypeID=1</link><pubDate>Mon, 27 Apr 2020 13:56:18 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:b33ff5f4-411d-4a52-8ecc-6ee1ca554bb7</guid><dc:creator>Alanarf</dc:creator><description>&lt;p&gt;i just connected both DK and my custom board in the wrong way, as i put in the image of this ticket. &lt;br /&gt;I verify my power supply always, and it is on 3.3V. The power supply is ok at least.&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: Unable to find or open JLinkARM.dll after wrong p20 SWD connection</title><link>https://devzone.nordicsemi.com/thread/246891?ContentTypeID=1</link><pubDate>Mon, 27 Apr 2020 13:53:27 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:d3103598-9e92-4696-8a80-f97a45268f6f</guid><dc:creator>ketiljo</dc:creator><description>&lt;p&gt;It depends what do you did to it then. Also make sure the power supply on your PCB is ok.&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: Unable to find or open JLinkARM.dll after wrong p20 SWD connection</title><link>https://devzone.nordicsemi.com/thread/246889?ContentTypeID=1</link><pubDate>Mon, 27 Apr 2020 13:49:05 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:ad4ac113-e5ec-47f0-a170-ed3c1ed7a5cb</guid><dc:creator>Alanarf</dc:creator><description>&lt;p&gt;Hi Ketiljo,&amp;nbsp;&lt;br /&gt;&lt;br /&gt;do you mean the nrf ? because i also have an AD7147 in the board.&amp;nbsp;&lt;br /&gt;&lt;br /&gt;I will replace the nrf chip, but do you think that just this wrong connection that i made is enough to broke the chip?&lt;br /&gt;&lt;br /&gt;&lt;br /&gt;&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: Unable to find or open JLinkARM.dll after wrong p20 SWD connection</title><link>https://devzone.nordicsemi.com/thread/246884?ContentTypeID=1</link><pubDate>Mon, 27 Apr 2020 13:41:22 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:37f8d2b9-7734-4501-8754-e767fc45edde</guid><dc:creator>ketiljo</dc:creator><description>&lt;p&gt;It looks like maybe the device is broken since you can&amp;#39;t connect to it. Can you try&amp;nbsp; to replace the device?&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: Unable to find or open JLinkARM.dll after wrong p20 SWD connection</title><link>https://devzone.nordicsemi.com/thread/246628?ContentTypeID=1</link><pubDate>Sat, 25 Apr 2020 18:13:26 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:0032e9ab-3a1b-46c8-a3aa-5a26de6c7ce7</guid><dc:creator>Alanarf</dc:creator><description>&lt;p&gt;Hello ketiljo,&amp;nbsp;&lt;br /&gt;&lt;br /&gt;thanks for the reply and sorry for my delay to answer.&lt;br /&gt;&lt;br /&gt;I tried nrfjprog, it returned the same message, here is the print;&amp;nbsp;&lt;br /&gt;&lt;br /&gt;&lt;img height="54" src="https://devzone.nordicsemi.com/resized-image/__size/640x480/__key/communityserver-discussions-components-files/4/pastedimage1587838603923v1.png" width="480" alt=" " /&gt;&lt;/p&gt;
&lt;p&gt;Actually any command that I type returns this message.&lt;/p&gt;
&lt;p&gt;Here is part of the log.log file :&lt;br /&gt;&lt;br /&gt;&lt;pre class="ui-code" data-mode="text"&gt;2020-Apr-25 20:14:43  --------------------------------------------------------------------------------
2020-Apr-25 20:14:43  nrfjprog --eraseall --log 
2020-Apr-25 20:14:43  nrfjprog version 10.8.0 
2020-Apr-25 20:14:43  --------------------------------------------------------------------------------
2020-Apr-25 20:14:43  nRF_logger_open
2020-Apr-25 20:14:43  nRF_logger_open:	nRFJProg logger opened to callback at address 0X7FF660D93410
2020-Apr-25 20:14:43  nRF_open_dll
2020-Apr-25 20:14:43  nRF_open_dll:	Load library at &amp;quot;C:\\Program Files\\Nordic Semiconductor\\nrf-command-line-tools\\bin\\JLINKARM_UNKNOWN_NRFJPROG.dll&amp;quot;.

2020-Apr-25 20:14:43  . nRFXX_logger_open
2020-Apr-25 20:14:43  . nRFXX_logger_open:	nRFJProg logger opened to callback at address 0X7FFEACDCE520
2020-Apr-25 20:14:43  . . Segger_logger_open
2020-Apr-25 20:14:43  . . Segger_logger_open:	nRFJProg logger opened to callback at address 0X7FFEACD7D6D0
2020-Apr-25 20:14:43  . . Segger_open_dll
2020-Apr-25 20:14:43  . . Segger_open_dll:	Load library at &amp;quot;C:\\Program Files (x86)\\SEGGER\\JLink\\JLink_x64.dll&amp;quot;.

2020-Apr-25 20:14:43  . . . Segger_dll_version
2020-Apr-25 20:14:43  . . Segger_set_core_data
2020-Apr-25 20:14:43  nRF_enum_emu_snr
2020-Apr-25 20:14:43  . nRFXX_enum_emu_snr
2020-Apr-25 20:14:43  . . Segger_enum_emu_snr
2020-Apr-25 20:14:43  . . . Segger_enum_emu_snr
2020-Apr-25 20:14:43  . . . . Segger_get_num_emus
2020-Apr-25 20:14:43  nRF_connect_to_emu_with_snr
2020-Apr-25 20:14:43  . nRFXX_connect_to_emu_with_snr
2020-Apr-25 20:14:43  . . Segger_connect_to_emu_with_snr
2020-Apr-25 20:14:43  . . . Segger_is_connected_to_emu
2020-Apr-25 20:14:43  . . . Segger_enum_emu_snr
2020-Apr-25 20:14:43  . . . . Segger_get_num_emus
2020-Apr-25 20:14:43  . . . Segger_connect_to_emu_with_snr
2020-Apr-25 20:14:43  . . . . Segger_connect_to_emu_without_snr
2020-Apr-25 20:14:43  . . . . Segger_connect_to_emu_without_snr:	Segger logging enabled with callback at 0x140731798248048.

2020-Apr-25 20:14:43  . . . . Segger_connect_to_emu_without_snr:	JLink INFO	T0DE4 000:017.206   
2020-Apr-25 20:14:43  . . . . Segger_connect_to_emu_without_snr:	JLink INFO	Firmware: J-Link OB-SAM3U128-V2-NordicSemi compiled Mar 17 2020 14:43:00
2020-Apr-25 20:14:43  . . . . Segger_connect_to_emu_without_snr:	JLink INFO	T0DE4 000:019.315   
2020-Apr-25 20:14:43  . . . . Segger_connect_to_emu_without_snr:	JLink INFO	Hardware: V1.00
2020-Apr-25 20:14:43  . . . . Segger_connect_to_emu_without_snr:	JLink INFO	T0DE4 000:020.485   
2020-Apr-25 20:14:43  . . . . Segger_connect_to_emu_without_snr:	JLink INFO	S/N: 682037368
2020-Apr-25 20:14:43  . . . . Segger_connect_to_emu_without_snr:	JLink INFO	T0DE4 000:021.379   
2020-Apr-25 20:14:43  . . . . Segger_connect_to_emu_without_snr:	JLink INFO	OEM: SEGGER
2020-Apr-25 20:14:43  . . . . Segger_connect_to_emu_without_snr:	JLink INFO	T0DE4 000:022.223   
2020-Apr-25 20:14:43  . . . . Segger_connect_to_emu_without_snr:	JLink INFO	Feature(s): RDI, FlashBP, FlashDL, JFlash, GDB
2020-Apr-25 20:14:43  . . . . Segger_connect_to_emu_without_snr:	JLink INFO	T0DE4 000:023.851   
2020-Apr-25 20:14:43  . . . . Segger_connect_to_emu_without_snr:	JLink INFO	TELNET listener socket opened on port 19021
2020-Apr-25 20:14:43  . . . . Segger_connect_to_emu_without_snr:	JLink INFO	T0DE4 000:024.814   
2020-Apr-25 20:14:43  . . . . Segger_connect_to_emu_without_snr:	JLink INFO	WEBSRV Starting webserver
2020-Apr-25 20:14:43  . . . . Segger_connect_to_emu_without_snr:	JLink INFO	T0DE4 000:025.755   
2020-Apr-25 20:14:43  . . . . Segger_connect_to_emu_without_snr:	JLink INFO	WEBSRV Webserver running on local port 19080
2020-Apr-25 20:14:43  . . . . Segger_connect_to_emu_without_snr:	JLink INFO	T0DE4 000:026.608 
2020-Apr-25 20:14:43  . . . . Segger_connect_to_emu_without_snr:	JLink INFO	- 12.315ms returns O.K.  
2020-Apr-25 20:14:43  . . . . Segger_connect_to_emu_without_snr:	JLink INFO	T0DE4 000:027.447 
2020-Apr-25 20:14:43  . . . . Segger_connect_to_emu_without_snr:	JLink INFO	JLINK_GetHWStatus(...)  
2020-Apr-25 20:14:43  . . . . Segger_connect_to_emu_without_snr:	JLink INFO	T0DE4 000:028.401 
2020-Apr-25 20:14:43  . . . . Segger_connect_to_emu_without_snr:	JLink INFO	- 1.400ms returns 0x00  
2020-Apr-25 20:14:43  . . . . Segger_connect_to_emu_without_snr:	JLink INFO	T0DE4 000:029.269 
2020-Apr-25 20:14:43  . . . . Segger_connect_to_emu_without_snr:	JLink INFO	JLINK_ExecCommand(&amp;quot;SetRestartOnClose = 0&amp;quot;, ...).   
2020-Apr-25 20:14:43  . . . . Segger_connect_to_emu_without_snr:	JLink INFO	T0DE4 000:030.033 
2020-Apr-25 20:14:43  . . . . Segger_connect_to_emu_without_snr:	JLink INFO	- 0.378ms returns 0x01  
2020-Apr-25 20:14:43  . . . . Segger_connect_to_emu_without_snr:	JLink INFO	T0DE4 000:030.827 
2020-Apr-25 20:14:43  . . . . Segger_connect_to_emu_without_snr:	JLink INFO	JLINK_ExecCommand(&amp;quot;DisableFlashDL&amp;quot;, ...).   
2020-Apr-25 20:14:43  . . . . Segger_connect_to_emu_without_snr:	JLink INFO	T0DE4 000:031.678 
2020-Apr-25 20:14:43  . . . . Segger_connect_to_emu_without_snr:	JLink INFO	- 0.423ms returns 0x00  
2020-Apr-25 20:14:43  . . . . Segger_connect_to_emu_without_snr:	JLink INFO	T0DE4 000:032.514 
2020-Apr-25 20:14:43  . . . . Segger_connect_to_emu_without_snr:	JLink INFO	JLINK_ExecCommand(&amp;quot;ExcludeFlashCacheRange 0x0-0xFFFFFFFF&amp;quot;, ...).   
2020-Apr-25 20:14:43  . . . . Segger_connect_to_emu_without_snr:	JLink INFO	T0DE4 000:033.319 
2020-Apr-25 20:14:43  . . . . Segger_connect_to_emu_without_snr:	JLink INFO	- 0.366ms returns 0x00  
2020-Apr-25 20:14:43  . . . . Segger_connect_to_emu_without_snr:	JLink INFO	T0DE4 000:034.119   
2020-Apr-25 20:14:43  . . . . Segger_connect_to_emu_without_snr:	JLink INFO	JLINK_SetHookUnsecureDialog(...)
2020-Apr-25 20:14:43  . . . . Segger_connect_to_emu_without_snr:	JLink INFO	T0DE4 000:034.914 
2020-Apr-25 20:14:43  . . . . Segger_connect_to_emu_without_snr:	JLink INFO	- 1.189ms returns 0  
2020-Apr-25 20:14:43  . . . . Segger_connect_to_emu_without_snr:	JLink INFO	T0DE4 000:035.851 
2020-Apr-25 20:14:43  . . . . Segger_connect_to_emu_without_snr:	JLink INFO	JLINK_TIF_Select(JLINKARM_TIF_SWD)  
2020-Apr-25 20:14:43  . . . . Segger_connect_to_emu_without_snr:	JLink INFO	T0DE4 000:038.425 
2020-Apr-25 20:14:43  . . . . Segger_connect_to_emu_without_snr:	JLink INFO	- 3.164ms returns 0x00  
2020-Apr-25 20:14:43  . . . . Segger_connect_to_emu_without_snr:	JLink INFO	T0DE4 000:039.534 
2020-Apr-25 20:14:43  . . . . Segger_connect_to_emu_without_snr:	JLink INFO	JLINK_SetSpeed(2000)  
2020-Apr-25 20:14:43  . . . . Segger_connect_to_emu_without_snr:	JLink INFO	T0DE4 000:040.412 
2020-Apr-25 20:14:43  . . . . Segger_connect_to_emu_without_snr:	JLink INFO	- 1.298ms  
2020-Apr-25 20:14:43  . . . . . Segger_load_core_data
2020-Apr-25 20:14:43  . . . . . Segger_load_core_data:	JLink INFO	T0DE4 000:041.694 
2020-Apr-25 20:14:43  . . . . . Segger_load_core_data:	JLink INFO	JLINK_ExecCommand(&amp;quot;CORESIGHT_SetIndexAHBAPToUse = 0&amp;quot;, ...).   
2020-Apr-25 20:14:43  . . . . . Segger_load_core_data:	JLink INFO	T0DE4 000:042.433 
2020-Apr-25 20:14:43  . . . . . Segger_load_core_data:	JLink INFO	- 0.432ms returns 0x00  
2020-Apr-25 20:14:43  . . . . . Segger_load_core_data:	JLink INFO	T0DE4 000:043.251 
2020-Apr-25 20:14:43  . . . . . Segger_load_core_data:	JLink INFO	JLINK_ExecCommand(&amp;quot;device = Cortex-M4&amp;quot;, ...).   
2020-Apr-25 20:14:43  . . . . . Segger_load_core_data:	JLink INFO	T0DE4 000:051.673   
2020-Apr-25 20:14:43  . . . . . Segger_load_core_data:	JLink INFO	XML file found at: C:\Program Files (x86)\SEGGER\JLink\JLinkDevices.xml 
2020-Apr-25 20:14:43  . . . . . Segger_load_core_data:	JLink INFO	T0DE4 000:053.922   
2020-Apr-25 20:14:43  . . . . . Segger_load_core_data:	JLink INFO	C:\Program Files (x86)\SEGGER\JLink\JLinkDevices.xml evaluated successfully. 
2020-Apr-25 20:14:43  . . . . . Segger_load_core_data:	JLink INFO	T0DE4 000:093.040   
2020-Apr-25 20:14:43  . . . . . Segger_load_core_data:	JLink INFO	Device &amp;quot;CORTEX-M4&amp;quot; selected.
2020-Apr-25 20:14:43  . . . . . Segger_load_core_data:	JLink INFO	T0DE4 000:096.209 
2020-Apr-25 20:14:43  . . . . . Segger_load_core_data:	JLink INFO	- 52.687ms returns 0x00  
2020-Apr-25 20:14:43  nRF_read_connected_emu_snr
2020-Apr-25 20:14:43  . nRFXX_read_connected_emu_snr
2020-Apr-25 20:14:43  . . Segger_read_connected_emu_snr
2020-Apr-25 20:14:43  . . . Segger_is_connected_to_emu
2020-Apr-25 20:14:43  . . . Segger_is_connected_to_emu:	JLink INFO	T0DE4 000:099.253 
2020-Apr-25 20:14:43  . . . Segger_is_connected_to_emu:	JLink INFO	JLINK_IsOpen()  
2020-Apr-25 20:14:43  . . . Segger_is_connected_to_emu:	JLink INFO	T0DE4 000:100.041 
2020-Apr-25 20:14:43  . . . Segger_is_connected_to_emu:	JLink INFO	- 1.180ms returns 0x01  
2020-Apr-25 20:14:43  nRF_read_device_family
2020-Apr-25 20:14:43  . nRFXX_read_device_family
2020-Apr-25 20:14:43  . . Segger_is_connected_to_emu
2020-Apr-25 20:14:43  . . Segger_is_connected_to_emu:	JLink INFO	T0DE4 000:102.016 
2020-Apr-25 20:14:43  . . Segger_is_connected_to_emu:	JLink INFO	JLINK_IsOpen()  
2020-Apr-25 20:14:43  . . Segger_is_connected_to_emu:	JLink INFO	T0DE4 000:102.942 
2020-Apr-25 20:14:43  . . Segger_is_connected_to_emu:	JLink INFO	- 1.360ms returns 0x01  
2020-Apr-25 20:14:43  . . :	JLink INFO	T0DE4 000:103.787 
2020-Apr-25 20:14:43  . . :	JLink INFO	JLINK_Lock()  
2020-Apr-25 20:14:43  . . Segger_read_debug_port_idr
2020-Apr-25 20:14:43  . . . Segger_read_debug_port_register
2020-Apr-25 20:14:43  . . . . Segger_read_debug_port_register
2020-Apr-25 20:14:43  . . . . . Segger_coresight_configure
2020-Apr-25 20:14:43  . . . . . Segger_coresight_configure:	JLink INFO	T0DE4 000:106.182   
2020-Apr-25 20:14:43  . . . . . Segger_coresight_configure:	JLink INFO	JLINK_CORESIGHT_Configure()  
2020-Apr-25 20:14:43  . . . . . Segger_coresight_configure:	JLink INFO	T0DE4 000:208.438   
2020-Apr-25 20:14:43  . . . . . Segger_coresight_configure:	JLink INFO	- 104.462ms returns 0  
2020-Apr-25 20:14:43  . . . . Segger_read_debug_port_register:	JLink INFO	T0DE4 000:212.581   
2020-Apr-25 20:14:43  . . . . Segger_read_debug_port_register:	JLink INFO	JLINK_CORESIGHT_ReadAPDPReg(DP reg 0x00)  
2020-Apr-25 20:14:43  . . . . Segger_read_debug_port_register:	JLink INFO	T0DE4 000:217.864     
2020-Apr-25 20:14:43  . . . . Segger_read_debug_port_register:	JLink INFO	failed
2020-Apr-25 20:14:43  . . . . Segger_read_debug_port_register:	JLink INFO	T0DE4 000:222.375   
2020-Apr-25 20:14:43  . . . . Segger_read_debug_port_register:	JLink INFO	- 11.666ms returns -1  
2020-Apr-25 20:14:43  . . . . Segger_read_debug_port_register:	JLinkARM.dll reported &amp;quot;-1&amp;quot;, an unknown error.

2020-Apr-25 20:14:43  . . . . . Segger_abort_debug_action
2020-Apr-25 20:14:43  . . . . . Segger_abort_debug_action:	Attempting to clear any configuration errors in debug port before closing connection. 

2020-Apr-25 20:14:43  . . . . . Segger_abort_debug_action:	JLink INFO	T0DE4 000:231.518   
2020-Apr-25 20:14:43  . . . . . Segger_abort_debug_action:	JLink INFO	JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
2020-Apr-25 20:14:43  . . . . . Segger_abort_debug_action:	JLink INFO	T0DE4 000:236.123   
2020-Apr-25 20:14:43  . . . . . Segger_abort_debug_action:	JLink INFO	- 6.619ms returns -1  
2020-Apr-25 20:14:43  . . . . . Segger_abort_debug_action:	JLinkARM.dll reported &amp;quot;-1&amp;quot;, an unknown error.

2020-Apr-25 20:14:43  . . :	JLink INFO	T0DE4 000:241.917 
2020-Apr-25 20:14:43  . . :	JLink INFO	JLINK_Unlock()  
2020-Apr-25 20:14:43  nRF_close_dll
2020-Apr-25 20:14:43  . nRFXX_close_dll
2020-Apr-25 20:14:43  . . Segger_close
2020-Apr-25 20:14:43  . . . Segger_disconnect_from_emu
2020-Apr-25 20:14:43  . . . . Segger_is_connected_to_emu
2020-Apr-25 20:14:43  . . . . Segger_is_connected_to_emu:	JLink INFO	T0DE4 000:249.439 
2020-Apr-25 20:14:43  . . . . Segger_is_connected_to_emu:	JLink INFO	JLINK_IsOpen()  
2020-Apr-25 20:14:43  . . . . Segger_is_connected_to_emu:	JLink INFO	T0DE4 000:251.256 
2020-Apr-25 20:14:43  . . . . Segger_is_connected_to_emu:	JLink INFO	- 2.609ms returns 0x01  
2020-Apr-25 20:14:43  . . . . Segger_disconnect_from_emu
2020-Apr-25 20:14:43  . . . . . Segger_is_connected_to_device
2020-Apr-25 20:14:43  . . . . . Segger_is_connected_to_device:	JLink INFO	T0DE4 000:254.584 
2020-Apr-25 20:14:43  . . . . . Segger_is_connected_to_device:	JLink INFO	JLINK_IsConnected()  
2020-Apr-25 20:14:43  . . . . . Segger_is_connected_to_device:	JLink INFO	T0DE4 000:256.089 
2020-Apr-25 20:14:43  . . . . . Segger_is_connected_to_device:	JLink INFO	- 2.168ms returns FALSE  
2020-Apr-25 20:14:43  . . . . . Segger_is_debug_region_powered
2020-Apr-25 20:14:43  . . . . . . Segger_read_debug_port_register
2020-Apr-25 20:14:43  . . . . . . . Segger_is_connected_to_emu
2020-Apr-25 20:14:43  . . . . . . . Segger_is_connected_to_emu:	JLink INFO	T0DE4 000:259.298 
2020-Apr-25 20:14:43  . . . . . . . Segger_is_connected_to_emu:	JLink INFO	JLINK_IsOpen()  
2020-Apr-25 20:14:43  . . . . . . . Segger_is_connected_to_emu:	JLink INFO	T0DE4 000:260.324 
2020-Apr-25 20:14:43  . . . . . . . Segger_is_connected_to_emu:	JLink INFO	- 1.518ms returns 0x01  
2020-Apr-25 20:14:43  . . . . . . Segger_read_debug_port_register:	JLink INFO	T0DE4 000:261.344 
2020-Apr-25 20:14:43  . . . . . . Segger_read_debug_port_register:	JLink INFO	JLINK_Lock()  
2020-Apr-25 20:14:43  . . . . . . . Segger_write_debug_port_register
2020-Apr-25 20:14:43  . . . . . . . Segger_write_debug_port_register:	JLink INFO	T0DE4 000:262.838   
2020-Apr-25 20:14:43  . . . . . . . Segger_write_debug_port_register:	JLink INFO	JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x02, 0x00000000)  
2020-Apr-25 20:14:43  . . . . . . . Segger_write_debug_port_register:	JLink INFO	T0DE4 000:264.837   
2020-Apr-25 20:14:43  . . . . . . . Segger_write_debug_port_register:	JLink INFO	- 2.476ms returns -1  
2020-Apr-25 20:14:43  . . . . . . . Segger_write_debug_port_register:	JLinkARM.dll reported &amp;quot;-1&amp;quot;, an unknown error.

2020-Apr-25 20:14:43  . . . . . . . . Segger_abort_debug_action
2020-Apr-25 20:14:43  . . . . . . . . Segger_abort_debug_action:	Attempting to clear any configuration errors in debug port before closing connection. 

2020-Apr-25 20:14:43  . . . . . . . . Segger_abort_debug_action:	JLink INFO	T0DE4 000:267.238   
2020-Apr-25 20:14:43  . . . . . . . . Segger_abort_debug_action:	JLink INFO	JLINK_CORESIGHT_WriteAPDPReg(DP reg 0x00, 0x0000001F)  
2020-Apr-25 20:14:43  . . . . . . . . Segger_abort_debug_action:	JLink INFO	T0DE4 000:269.085   
2020-Apr-25 20:14:43  . . . . . . . . Segger_abort_debug_action:	JLink INFO	- 2.443ms returns -1  
2020-Apr-25 20:14:43  . . . . . . . . Segger_abort_debug_action:	JLinkARM.dll reported &amp;quot;-1&amp;quot;, an unknown error.

2020-Apr-25 20:14:43  . . . . . . Segger_read_debug_port_register:	JLink INFO	T0DE4 000:270.925 
2020-Apr-25 20:14:43  . . . . . . Segger_read_debug_port_register:	JLink INFO	JLINK_Unlock()  
2020-Apr-25 20:14:43  . . . . Segger_disconnect_from_emu:	JLink INFO	T0DE4 000:288.113 
2020-Apr-25 20:14:43  . . . . Segger_disconnect_from_emu:	JLink INFO	JLINK_Close()  
2020-Apr-25 20:14:43  . . Segger_close:	Freeing Library.

2020-Apr-25 20:14:43  nRF_close_dll:	Freeing Library.

&lt;/pre&gt;&lt;br /&gt;&lt;br /&gt;&lt;/p&gt;
&lt;p&gt;thanks,&amp;nbsp;&lt;br /&gt;&lt;br /&gt;Alanarf&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: Unable to find or open JLinkARM.dll after wrong p20 SWD connection</title><link>https://devzone.nordicsemi.com/thread/246498?ContentTypeID=1</link><pubDate>Fri, 24 Apr 2020 11:49:37 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:eb687163-7565-41c6-842b-4c9e657893f0</guid><dc:creator>ketiljo</dc:creator><description>&lt;p&gt;Have you tried to use nrfjprog in a command line instead of nRFgoStudio?&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item></channel></rss>