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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>nRF Sniffer Capturing all 3 Advertising Channels with 3 seperate Dongles</title><link>https://devzone.nordicsemi.com/f/nordic-q-a/73948/nrf-sniffer-capturing-all-3-advertising-channels-with-3-seperate-dongles</link><description>Hello, 
 is there a way to record Advertising Packets on all three channels (37,38,39) simultaneously using 3 individual nRF52840-Dongles and piping the output to a stream. I tried solving this with Tshark but i don&amp;#39;t know how to set the Dongles to record</description><dc:language>en-US</dc:language><generator>Telligent Community 13</generator><lastBuildDate>Wed, 14 Apr 2021 15:13:22 GMT</lastBuildDate><atom:link rel="self" type="application/rss+xml" href="https://devzone.nordicsemi.com/f/nordic-q-a/73948/nrf-sniffer-capturing-all-3-advertising-channels-with-3-seperate-dongles" /><item><title>RE: nRF Sniffer Capturing all 3 Advertising Channels with 3 seperate Dongles</title><link>https://devzone.nordicsemi.com/thread/304893?ContentTypeID=1</link><pubDate>Wed, 14 Apr 2021 15:13:22 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:11f96b01-522d-493d-a295-88ad30c4503d</guid><dc:creator>Joakim Andersson</dc:creator><description>&lt;p&gt;I have never used tshark before, but since you have started it with an output pipe I&amp;#39;m guessing you can figure it out.&lt;br /&gt;&lt;br /&gt;You need to set up the input pipe and send the command over that.&lt;br /&gt;The command format is explained here:&amp;nbsp;&lt;a href="https://www.wireshark.org/docs/wsdg_html_chunked/ChCaptureExtcap.html"&gt;https://www.wireshark.org/docs/wsdg_html_chunked/ChCaptureExtcap.html&lt;/a&gt;&lt;br /&gt;Look at&amp;nbsp;8.2.3.2.1. Control Protocol.&lt;br /&gt;&lt;br /&gt;The control number is&amp;nbsp;3 (CTRL_ARG_ADVHOP = 3 in nrf_sniffer_ble.py) and the command byte is 2 for &amp;quot;SET&amp;quot; I think, since the type is string. The payload should be the channel map, with comma as separator. So for a single channel it just the string representation of a single channel (utf-8).&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item></channel></rss>