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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>MDK 6.5 USB CDC issue</title><link>https://community.arm.com/developer/tools-software/tools/f/keil-forum/34663/mdk-6-5-usb-cdc-issue</link><description> 
While stress testing the MDK USB Device CDC support by sending
large amounts of data, randomly the data that is actually sent is
halted. 
Studying the transactions with a USB analyzer (Ellisys USB Explorer
200) one can see that when it stops sending</description><dc:language>en-US</dc:language><generator>Telligent Community 10</generator><item><title>RE: MDK 6.5 USB CDC issue</title><link>https://community.arm.com/thread/117865?ContentTypeID=1</link><pubDate>Fri, 02 Oct 2015 05:11:27 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:9aa9c131-473c-471c-ab4e-3f8e0ccf638e</guid><dc:creator>Tobias Lindkvist</dc:creator><description>&lt;p&gt;&lt;p&gt;
I haven&amp;#39;t had any problem with the USB Device CDC since I turned
off the USB register view in the System Viewer.&lt;br /&gt;
Previously, I experienced the stopping of data from device to host in
less than a minute, now it&amp;#39;s been running nonstop for 3 hours at max
rate that I was able to achieve.&lt;/p&gt;

&lt;p&gt;
I believe it&amp;#39;s safe to say that the problem I had is related to
the system viewer displaying USB registers rather than a problem in
MDK.&lt;/p&gt;
&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: MDK 6.5 USB CDC issue</title><link>https://community.arm.com/thread/108459?ContentTypeID=1</link><pubDate>Fri, 02 Oct 2015 04:21:51 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:e0a87a6f-3f3a-4a2a-a897-9285149687de</guid><dc:creator>Milorad Cvjetkovic</dc:creator><description>&lt;p&gt;&lt;p&gt;
Hi Tobias,&lt;/p&gt;

&lt;p&gt;
do report if there are any issues you come across with CDC
device?&lt;/p&gt;

&lt;p&gt;
Best regards, Milorad&lt;/p&gt;
&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: MDK 6.5 USB CDC issue</title><link>https://community.arm.com/thread/82826?ContentTypeID=1</link><pubDate>Fri, 02 Oct 2015 01:56:13 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:1aa221b5-fdf7-4c1c-8d3f-05e57c856443</guid><dc:creator>Tobias Lindkvist</dc:creator><description>&lt;p&gt;&lt;p&gt;
After further testing... This might have been caused by having USB
related registers open in the system viewer while debugging...&lt;br /&gt;
Further testing will show if it appears as a problem again or
not.&lt;/p&gt;
&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: MDK 6.5 USB CDC issue</title><link>https://community.arm.com/thread/64145?ContentTypeID=1</link><pubDate>Thu, 01 Oct 2015 01:12:55 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:7921faa6-59f7-46ef-9c31-367205e29c4a</guid><dc:creator>Tobias Lindkvist</dc:creator><description>&lt;p&gt;&lt;p&gt;
I should add that this is tested with uVision 5.15 and 5.16a, and
the MCU is a STM32F439ZIT6 rev3.&lt;/p&gt;
&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item></channel></rss>