{"id":25,"date":"2013-08-12T20:42:15","date_gmt":"2013-08-12T20:42:15","guid":{"rendered":"http:\/\/www.itluxembourg.lu\/site\/?page_id=25"},"modified":"2021-10-27T23:07:06","modified_gmt":"2021-10-27T21:07:06","slug":"the-ftdi-adapter","status":"publish","type":"page","link":"https:\/\/www.itluxembourg.lu\/site\/the-ftdi-adapter\/","title":{"rendered":"The FTDI adapter"},"content":{"rendered":"<form id=\"form1\" action=\"http:\/\/www.itluxembourg.lu\/openlrs\/FTDI.aspx\" method=\"post\" name=\"form1\">\n<h1>Introduction<\/h1>\n<p>The 6 pin header next to the antenna connector is the serial connector, which allows communication between the ULRS and the computer or tablet.<\/p>\n<p>This connector is sometimes referred to as the FTDI header, in reference to the <a href=\"https:\/\/fr.wikipedia.org\/wiki\/Future_Technology_Devices_International\" target=\"_blank\" rel=\"noopener noreferrer\">FTDI company<\/a> who is one of the main manufacturer of USB-to-serial chips and adapters.<\/p>\n<div><\/div>\n<div><a href=\"https:\/\/www.itluxembourg.lu\/site\/wp-content\/uploads\/2013\/08\/ftdi.png\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-1481\" src=\"https:\/\/www.itluxembourg.lu\/site\/wp-content\/uploads\/2013\/08\/ftdi.png\" alt=\"ftdi\" width=\"1000\" height=\"423\" \/><\/a><\/div>\n<div><\/div>\n<h1>Where to order an\u00a0FTDI adapter<\/h1>\n<ul>\n<li>Please use only genuine FTDI adapter :\u00a0<a href=\"https:\/\/ftdichip.com\/products\/ttl-232r-3v3\/\" target=\"_blank\" rel=\"noopener noreferrer\">link to order page<\/a><\/li>\n<li>Be careful to choose the 3.3V version (follow the link above).<\/li>\n<li>The first advantage is that the electronics in hidden in the USB connector :<\/li>\n<\/ul>\n<p><a href=\"https:\/\/ftdichip.com\/products\/ttl-232r-3v3\/\" target=\"_blank\" rel=\"noopener noreferrer\"><img loading=\"lazy\" decoding=\"async\" class=\" size-full wp-image-91 aligncenter\" src=\"https:\/\/www.itluxembourg.lu\/site\/wp-content\/uploads\/2013\/08\/ftdichip.jpg\" alt=\"ftdichip\" width=\"270\" height=\"196\" \/><\/a><\/p>\n<ul>\n<li>The second advantage is that it works. It&#8217;s really worth the cost of using a genuine FTDI cable, as I&#8217;ve seen several clones giving many issues. For example flashing the firmware will work every three times.<\/li>\n<li>The core issue is that the atmega isn&#8217;t able to give a precise 115200 bauds serial, and gives something close but higher like 117000 bauds. This works with genuine FTDI adapters, but not with all clones.<\/li>\n<\/ul>\n<h3><\/h3>\n<h1>Remarks<\/h1>\n<\/form>\n<h2>How to connect RX and TX<\/h2>\n<p>There&#8217;s sometimes a confusion, because the TX pin of the ULRS must\u00a0be connected to the RX of the FTDI, and vice-versa. This is normal, for serial connection the RX pin of anything has to be connected on the TX pin of something else.<\/p>\n<p>But to make it clear, you must connect the FTDI adapter pin to pin to the OrangeRX serial connector, without any crossing cable. The Wolfbox modules do have a different pinout, which is described here.<\/p>\n<h2>Alternative color code<\/h2>\n<p>Some FTDI use an alternative color code described below :<\/p>\n<p><a href=\"https:\/\/www.itluxembourg.lu\/site\/wp-content\/uploads\/2018\/02\/6fb5f1752cde5e201.png\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-2409\" src=\"https:\/\/www.itluxembourg.lu\/site\/wp-content\/uploads\/2018\/02\/6fb5f1752cde5e201.png\" alt=\"\" width=\"282\" height=\"461\" srcset=\"https:\/\/www.itluxembourg.lu\/site\/wp-content\/uploads\/2018\/02\/6fb5f1752cde5e201.png 282w, https:\/\/www.itluxembourg.lu\/site\/wp-content\/uploads\/2018\/02\/6fb5f1752cde5e201-184x300.png 184w\" sizes=\"auto, (max-width: 282px) 100vw, 282px\" \/><\/a><\/p>\n<h2>The DTR or RTS signal<\/h2>\n<p>Notice the important pin marked DTR on the ULRS : this is used during programming, and causes a reset that will put the module in bootloader mode.<\/p>\n<p>On the alternative color FTDI cable described above, use the RTS signal in place of the DTR signal (which isn&#8217;t available).<\/p>\n<h2>The CTS signal<\/h2>\n<p>The CTS pin is not needed for ULRS.<\/p>\n<h2>Flashing a Wolfbox 1W module<\/h2>\n<p>The Wolfbox modules have a non-standard connector for FTDI.<\/p>\n<p>Be careful to connect the correct pins (DTR, RX, TX, GND), taking care of crossing the RX and TX as usual.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Introduction The 6 pin header next to the antenna connector is the serial connector, which allows communication between the ULRS and the computer or tablet. This connector is sometimes referred<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":74,"comment_status":"open","ping_status":"open","template":"","meta":{"footnotes":""},"class_list":["post-25","page","type-page","status-publish","hentry"],"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/www.itluxembourg.lu\/site\/wp-json\/wp\/v2\/pages\/25","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.itluxembourg.lu\/site\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.itluxembourg.lu\/site\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.itluxembourg.lu\/site\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.itluxembourg.lu\/site\/wp-json\/wp\/v2\/comments?post=25"}],"version-history":[{"count":34,"href":"https:\/\/www.itluxembourg.lu\/site\/wp-json\/wp\/v2\/pages\/25\/revisions"}],"predecessor-version":[{"id":3138,"href":"https:\/\/www.itluxembourg.lu\/site\/wp-json\/wp\/v2\/pages\/25\/revisions\/3138"}],"wp:attachment":[{"href":"https:\/\/www.itluxembourg.lu\/site\/wp-json\/wp\/v2\/media?parent=25"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}