{"id":9700,"date":"2019-06-09T08:20:35","date_gmt":"2019-06-09T08:20:35","guid":{"rendered":"http:\/\/blog.bachi.net\/?p=9700"},"modified":"2019-06-09T08:58:08","modified_gmt":"2019-06-09T08:58:08","slug":"windows-10-bluetooth-spp-two-virtual-com-ports","status":"publish","type":"post","link":"https:\/\/blog.bachi.net\/?p=9700","title":{"rendered":"Windows 10 Bluetooth SPP &#8211; Two Virtual COM Ports"},"content":{"rendered":"<h1>1<\/h1>\n<p><a href=\"https:\/\/social.technet.microsoft.com\/Forums\/en-US\/58f690e5-1939-43c2-a2d3-245a527c678b\/bluetooth-serial-port-settings-for-windows10-pc?forum=win10itprohardware\">Bluetooth Serial Port settings for Windows10 PC<\/a><br \/>\nIt is true that with Windows own Bluetooth software two virtual COM ports are created after pairing:<\/p>\n<ul>\n<li>when connecting your terminal program to the <strong>first<\/strong> you are actually instructing Windows to attempt to <em>establish the Bluetooth connection<\/em> to the remote paired device, and if the connection is established the RFCOMM channel <em>will be opened for the exchange of data<\/em><\/li>\n<li>when connecting your terminal program to the <strong>second<\/strong> you are actually instructing Windows to <em>load the SPP SDP record<\/em> and<em> to remain waiting for incoming connections<\/em> from the remote paired device.<\/li>\n<\/ul>\n<h1>2<\/h1>\n<p><a href=\"https:\/\/www.pcreview.co.uk\/threads\/difference-between-incomming-bt-com-port-and-outgoing.2891488\/\">difference between incomming BT com-port and outgoing?<\/a><\/p>\n<ul>\n<li>An <strong>incoming port<\/strong> is used when a remote device established a connection to your device, and is exposed as the SerialPort service to the remote device.<\/li>\n<li>An <strong>outgoing port<\/strong> is used to make a connection to the serial port service on a remote device (e.g. GPS Receiver).<\/li>\n<\/ul>\n<h1>3<\/h1>\n<p><a href=\"https:\/\/www.silabs.com\/community\/wireless\/bluetooth\/forum.topic.html\/_two_virtual_serial-NP23\">*TWO* virtual serial ports created on Windows (BT121 class SPP)<\/a><\/p>\n<table>\n<tr>\n<td>\n<a href=\"http:\/\/blog.bachi.net\/wp-content\/uploads\/2019\/06\/win10_bluetooth_spp-1.png\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/blog.bachi.net\/wp-content\/uploads\/2019\/06\/win10_bluetooth_spp-1-300x234.png\" alt=\"\" width=\"300\" height=\"234\" class=\"alignleft size-medium wp-image-9703\" srcset=\"https:\/\/blog.bachi.net\/wp-content\/uploads\/2019\/06\/win10_bluetooth_spp-1-300x234.png 300w, https:\/\/blog.bachi.net\/wp-content\/uploads\/2019\/06\/win10_bluetooth_spp-1-768x598.png 768w, https:\/\/blog.bachi.net\/wp-content\/uploads\/2019\/06\/win10_bluetooth_spp-1-1024x797.png 1024w, https:\/\/blog.bachi.net\/wp-content\/uploads\/2019\/06\/win10_bluetooth_spp-1-624x486.png 624w, https:\/\/blog.bachi.net\/wp-content\/uploads\/2019\/06\/win10_bluetooth_spp-1.png 1200w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a>\n    <\/td>\n<\/tr>\n<\/table>\n<p><a href=\"https:\/\/support.microsoft.com\/en-gb\/help\/4028396\/windows-10-how-to-find-bluetooth-settings\">How to find Bluetooth settings in Windows 10<\/a><br \/>\n<a href=\"https:\/\/answers.microsoft.com\/en-us\/windows\/forum\/all\/virtual-bluetooth-adapter-settings-on-windows-10\/ccc4173c-442d-487c-b57e-234d51ed5a92\">Virtual Bluetooth adapter settings on windows 10<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>1 Bluetooth Serial Port settings for Windows10 PC It is true that with Windows own Bluetooth software two virtual COM ports are created after pairing: when connecting your terminal program to the first you are actually instructing Windows to attempt to establish the Bluetooth connection to the remote paired device, and if the connection is [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-9700","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/blog.bachi.net\/index.php?rest_route=\/wp\/v2\/posts\/9700","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.bachi.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.bachi.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.bachi.net\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.bachi.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=9700"}],"version-history":[{"count":7,"href":"https:\/\/blog.bachi.net\/index.php?rest_route=\/wp\/v2\/posts\/9700\/revisions"}],"predecessor-version":[{"id":9709,"href":"https:\/\/blog.bachi.net\/index.php?rest_route=\/wp\/v2\/posts\/9700\/revisions\/9709"}],"wp:attachment":[{"href":"https:\/\/blog.bachi.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=9700"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.bachi.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=9700"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.bachi.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=9700"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}