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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>nRF52840 USB CDC RX event only triggered on every other byte received</title><link>https://devzone.nordicsemi.com/f/nordic-q-a/39826/nrf52840-usb-cdc-rx-event-only-triggered-on-every-other-byte-received</link><description>Hi. In the nRF52840 SDK example USBD_CDC, the APP_USBD_CDC_ACM_USER_EVT_RX_DONE event only seems to fire every other byte that is sent through. E.g. If i send one character from putty the event doesn&amp;#39;t trigger, but then on the second character it fires</description><dc:language>en-US</dc:language><generator>Telligent Community 13</generator><lastBuildDate>Mon, 19 Nov 2018 17:11:18 GMT</lastBuildDate><atom:link rel="self" type="application/rss+xml" href="https://devzone.nordicsemi.com/f/nordic-q-a/39826/nrf52840-usb-cdc-rx-event-only-triggered-on-every-other-byte-received" /><item><title>RE: nRF52840 USB CDC RX event only triggered on every other byte received</title><link>https://devzone.nordicsemi.com/thread/158054?ContentTypeID=1</link><pubDate>Mon, 19 Nov 2018 17:11:18 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:b416d0ca-4868-4368-92ab-cc661adb6f0c</guid><dc:creator>Philip</dc:creator><description>&lt;p&gt;Silly&amp;nbsp;error of mine. There is an obvious variable READ_SIZE. This is set to 2 in the example code.&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: nRF52840 USB CDC RX event only triggered on every other byte received</title><link>https://devzone.nordicsemi.com/thread/154902?ContentTypeID=1</link><pubDate>Mon, 29 Oct 2018 14:15:09 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:0121a1ed-c1c5-4835-ac15-9cc2bc88f508</guid><dc:creator>Susheel Nuguru</dc:creator><description>&lt;p&gt;The code provided should only fire RX_DONE event once, as there is no read function in RX_DONE case. Can you please test this case on unmodified CDC ACM example code provided in the SDK?&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item></channel></rss>