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<?xml-stylesheet type="text/xsl" href="https://community.arm.com/utility/feedstylesheets/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/"><channel><title>st-link problem</title><link>https://community.arm.com/developer/tools-software/tools/f/keil-forum/41520/st-link-problem</link><description> 
hi guys, 

 
I have a problem! 
I am tryin&amp;#39; to program a STM32F407VGT microcontroller, but when I
connect the programmer the 
st-link debugger keeps sayin&amp;#39; &amp;quot;no st-link detected&amp;quot; . I have
installed the st-link usb driver 
over and over but didn&amp;#39;t help</description><dc:language>en-US</dc:language><generator>Telligent Community 10</generator><item><title>RE: st-link problem</title><link>https://community.arm.com/thread/129360?ContentTypeID=1</link><pubDate>Sat, 25 Feb 2017 08:40:06 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:cceb7eb7-e590-4db9-b9ab-11d95bc26451</guid><dc:creator>Andy Neil</dc:creator><description>&lt;p&gt;&lt;p&gt;
Good point!&lt;/p&gt;

&lt;p&gt;
So, another thing to check: Is the STLink detected OK when it&amp;#39;s
&lt;b&gt;not&lt;/b&gt; connected to your board?&lt;/p&gt;

&lt;p&gt;
I think it would have to be quite a gross error to actually stop
the STLink working!&lt;/p&gt;

&lt;p&gt;
Note that the error &amp;quot;STLink not detected&amp;quot; is distinct from &amp;quot;Cannot
connect to target&amp;quot; errors (in the ST Utility, at least):&lt;/p&gt;

&lt;p&gt;
* &amp;quot;STLink not detected&amp;quot; means that the PC cannot see the STLink at
all - check in Device Manager;&lt;/p&gt;

&lt;p&gt;
* &amp;quot;Cannot connect to target&amp;quot; errors mean that the STLink can be
seen, but then there&amp;#39;s a problem connecting to the target.&lt;/p&gt;

&lt;p&gt;
Is it a genuine, standalone STLink - from ST?&lt;/p&gt;

&lt;p&gt;
Is it a genuine, embedded STLink - on a Discovery or Nucleo
board?&lt;/p&gt;

&lt;p&gt;
Or is it a cheap knock-off from ebay, etc?&lt;/p&gt;

&lt;p&gt;
If it&amp;#39;s a cheap ebay knock-off, check the target connector pinout
carefully - there are some identical-looking units which have
&lt;b&gt;&lt;i&gt;different&lt;/i&gt; pinouts!!&lt;/b&gt;&lt;/p&gt;
&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: st-link problem</title><link>https://community.arm.com/thread/121014?ContentTypeID=1</link><pubDate>Sat, 25 Feb 2017 07:38:05 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:50893a55-7d51-4bd7-b2f0-6cbf652b0204</guid><dc:creator>Westonsupermare Pier</dc:creator><description>&lt;p&gt;&lt;p&gt;
Ok, so perhaps you haven&amp;#39;t built this one properly?&lt;/p&gt;

&lt;p&gt;
Check for obvious electrical issues like shorts, opens, lack of
power, etc. that might interfere with connectivity, or cause the
ST-LINK to malfunction.&lt;/p&gt;

&lt;p&gt;
Do you have other interfaces you could try? Say USART or USB in
boot mode?&lt;/p&gt;
&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: st-link problem</title><link>https://community.arm.com/thread/109092?ContentTypeID=1</link><pubDate>Sat, 25 Feb 2017 03:03:36 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:fd04237b-f043-4ce0-b47a-aa8ef43ab6cc</guid><dc:creator>Andy Neil</dc:creator><description>&lt;p&gt;&lt;p&gt;
So if ST&amp;#39;s own utility also can&amp;#39;t detect the STLink, that clearly
shows that it is a fundamental problem with the STLink and has
&lt;b&gt;nothing to do with Keil&lt;/b&gt;&lt;/p&gt;

&lt;p&gt;
So you need to contact &lt;b&gt;ST&lt;/b&gt; support to resolve this.&lt;/p&gt;

&lt;p&gt;
Have you tried the &lt;b&gt;ST&lt;/b&gt; forums?&lt;/p&gt;
&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: st-link problem</title><link>https://community.arm.com/thread/83566?ContentTypeID=1</link><pubDate>Fri, 24 Feb 2017 22:42:37 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:2670e8b4-7ae4-4400-88e7-40a6c8f3ef3b</guid><dc:creator>ghazal abdulali</dc:creator><description>&lt;p&gt;&lt;p&gt;
exactly!!!!&lt;/p&gt;
&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: st-link problem</title><link>https://community.arm.com/thread/83565?ContentTypeID=1</link><pubDate>Fri, 24 Feb 2017 22:41:17 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:17056e7b-7b2f-4187-9529-68fc00afaeab</guid><dc:creator>ghazal abdulali</dc:creator><description>&lt;p&gt;&lt;p&gt;
how is this even possible? we have created the board (usin&amp;#39; altium
designer) &amp;amp; I am pretty&lt;br /&gt;
sure that it works, cause we have 4 board of a same kind &amp;amp; only
this one doesn&amp;#39;t work :(&lt;/p&gt;
&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: st-link problem</title><link>https://community.arm.com/thread/69840?ContentTypeID=1</link><pubDate>Thu, 23 Feb 2017 23:54:36 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:938ad875-8141-4e98-8929-4302446de401</guid><dc:creator>Andy Neil</dc:creator><description>&lt;p&gt;&lt;p&gt;
What do you mean by that?&lt;/p&gt;

&lt;p&gt;
Are you saying that the STLink utility also can&amp;#39;t detect your
STLink?&lt;/p&gt;
&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: st-link problem</title><link>https://community.arm.com/thread/65366?ContentTypeID=1</link><pubDate>Thu, 23 Feb 2017 23:52:35 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:a11abace-2527-4720-b80c-d9d1cb08351e</guid><dc:creator>cOSankalp Agarwal</dc:creator><description>&lt;p&gt;&lt;p&gt;
May be there is no ST-Link on the board ?&lt;/p&gt;

&lt;p&gt;
Which board you are using ?&lt;/p&gt;
&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item></channel></rss>