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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>Issues with increasing USB transfer speeds</title><link>https://devzone.nordicsemi.com/f/nordic-q-a/59753/issues-with-increasing-usb-transfer-speeds</link><description>Hi, 
 I&amp;#39;ve been trying to set up a SPI &amp;lt;-&amp;gt; USB interface between an FPGA and my PC via the nrf52840 dk. My ultimate goal is to stream 1Mbps+ worth of data, but right now I can only hit 1 kbps (bits! not bytes!). If I try to speed up the frequency of my</description><dc:language>en-US</dc:language><generator>Telligent Community 13</generator><lastBuildDate>Tue, 31 Mar 2020 22:13:58 GMT</lastBuildDate><atom:link rel="self" type="application/rss+xml" href="https://devzone.nordicsemi.com/f/nordic-q-a/59753/issues-with-increasing-usb-transfer-speeds" /><item><title>RE: Issues with increasing USB transfer speeds</title><link>https://devzone.nordicsemi.com/thread/242799?ContentTypeID=1</link><pubDate>Tue, 31 Mar 2020 22:13:58 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:99e136c6-398c-4c39-a608-1cdcec1e653d</guid><dc:creator>ryerye120</dc:creator><description>&lt;p&gt;Turns out there are multiple issues, but the major USB issue was that I wasn&amp;#39;t setting any flags/checking&amp;nbsp;APP_USBD_CDC_ACM_USER_EVT_TX_DONE . After I checked that I stopped getting corrupted data. the FFFFF&amp;#39;s seem to be related to my SPI driver. Though that will be for another ticket.&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item></channel></rss>