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<?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>Connection for NRF51822 J-Link base</title><link>https://devzone.nordicsemi.com/f/nordic-q-a/4581/connection-for-nrf51822-j-link-base</link><description>Hello, 
 I just bought an nrf51822 evaluation kit and a segger J-link BASE Jtag. I understand that I have to play with the SW4 swith and the U4. 
 I identified the switch SW4 but not the U4. In other word,even if it is probably quite basic, I don&amp;#39;t</description><dc:language>en-US</dc:language><generator>Telligent Community 13</generator><lastBuildDate>Fri, 13 Apr 2018 17:15:48 GMT</lastBuildDate><atom:link rel="self" type="application/rss+xml" href="https://devzone.nordicsemi.com/f/nordic-q-a/4581/connection-for-nrf51822-j-link-base" /><item><title>RE: Connection for NRF51822 J-Link base</title><link>https://devzone.nordicsemi.com/thread/128295?ContentTypeID=1</link><pubDate>Fri, 13 Apr 2018 17:15:48 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:2128923f-aa0c-4bd3-a9da-01b2020cc3ee</guid><dc:creator>Omnia</dc:creator><description>&lt;p&gt;- yes, it is possible to use printf using RTT log. (different &amp;quot;printf&amp;quot; name but same behaviour) andit is also possible to use an UART communication&lt;/p&gt;
&lt;p&gt;SW4 is used to use the segger with a custom board&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: Connection for NRF51822 J-Link base</title><link>https://devzone.nordicsemi.com/thread/16218?ContentTypeID=1</link><pubDate>Tue, 25 Nov 2014 12:50:57 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:6c507424-77f6-4867-bfe4-a8652c86dc83</guid><dc:creator>Omnia</dc:creator><description>&lt;p&gt;Hello Asbjørn,&lt;/p&gt;
&lt;p&gt;Thanks for the answer,&lt;/p&gt;
&lt;p&gt;Please have a look to this link and picture to see the board I bought.
&lt;a href="https://www.nordicsemi.com/eng/Products/Bluetooth-Smart-Bluetooth-low-energy/nRF51822-Evaluation-Kit"&gt;www.nordicsemi.com/.../nRF51822-Evaluation-Kit&lt;/a&gt;.
&lt;img src="https://devzone.nordicsemi.com/cfs-file/__key/communityserver-discussions-components-files/4/IMG_5F00_1629.JPG" alt="image description" /&gt;&lt;/p&gt;
&lt;p&gt;I haven&amp;#39;t seen that, there is already a ship allowing me to debug my program. Is it the same thing than the J-Link Base?&lt;/p&gt;
&lt;p&gt;I am a little bit lost, so what is the use of SW4 and U4 described in this document : &lt;a href="https://devzone.nordicsemi.com/question/21400/nrf51822-and-j-link-base-connections/"&gt;https://devzone.nordicsemi.com/question/21400/nrf51822-and-j-link-base-connections/&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;Furthermore if the USB plug is used to debug (via the ship you told to me), Am I still able to send log debug (such as printf ) at the same time ? Isn&amp;#39;t there any synchronisation issue ?&lt;/p&gt;
&lt;p&gt;Thanks,&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: Connection for NRF51822 J-Link base</title><link>https://devzone.nordicsemi.com/thread/16217?ContentTypeID=1</link><pubDate>Tue, 25 Nov 2014 12:03:36 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:e5a0cabb-61b6-4d25-803b-9f5d1da94987</guid><dc:creator>Asbj&amp;#248;rn</dc:creator><description>&lt;p&gt;Just to make sure, you have a nRF51822-EK and you want to program this with a J-Link Base? Why don&amp;#39;t you want to use the Segger J-link lite chip that is already on the nRF51822-EK? You don&amp;#39;t need the external J-link base to program the nRF51822-EK. Could you upload a picture of what you have and why you want to use the J-link base to program the nRF51822-EK?&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item></channel></rss>