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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>nRF9160 does not boot if UART hw-flow-control is enabled</title><link>https://devzone.nordicsemi.com/f/nordic-q-a/124022/nrf9160-does-not-boot-if-uart-hw-flow-control-is-enabled</link><description>Hello 
 
 On my application I have noticed that when I use hardware flow control of the uart1 (not the console uart) the processor will get stuck just before the application boots when the CTS line is not driven LOW. 
 Bellow is a screenshot of the LOGS</description><dc:language>en-US</dc:language><generator>Telligent Community 13</generator><lastBuildDate>Tue, 02 Sep 2025 10:53:10 GMT</lastBuildDate><atom:link rel="self" type="application/rss+xml" href="https://devzone.nordicsemi.com/f/nordic-q-a/124022/nrf9160-does-not-boot-if-uart-hw-flow-control-is-enabled" /><item><title>RE: nRF9160 does not boot if UART hw-flow-control is enabled</title><link>https://devzone.nordicsemi.com/thread/547446?ContentTypeID=1</link><pubDate>Tue, 02 Sep 2025 10:53:10 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:bdec4994-45f2-472a-85b9-9c710cf4cb97</guid><dc:creator>Hakon</dc:creator><description>[quote user="Avgerinos89"]Is this a normal operation when hardware control is enabled?[/quote]
&lt;p&gt;This is not normal as far as I know. I can try to test this if you share the code.&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: nRF9160 does not boot if UART hw-flow-control is enabled</title><link>https://devzone.nordicsemi.com/thread/547323?ContentTypeID=1</link><pubDate>Mon, 01 Sep 2025 11:51:51 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:fbec58de-7788-4b48-aef5-57b8eeb92b7a</guid><dc:creator>Avgerinos89</dc:creator><description>&lt;p&gt;The execution is getting stuck just before my application code starts execution, As you can see i the logs screenshot above.&lt;/p&gt;
&lt;p&gt;There is no dependency within the application code.&amp;nbsp;&lt;/p&gt;
&lt;p&gt;I just say that it looks like there is a dependency just before the application boot.&lt;/p&gt;
&lt;p&gt;Is this a normal operation when hardware control is enabled?&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: nRF9160 does not boot if UART hw-flow-control is enabled</title><link>https://devzone.nordicsemi.com/thread/547313?ContentTypeID=1</link><pubDate>Mon, 01 Sep 2025 11:07:01 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:3e053085-cbe4-4c3a-9dda-2718802f936b</guid><dc:creator>Hakon</dc:creator><description>&lt;p&gt;Hello,&lt;/p&gt;
[quote user=""]Because I do not want the application execution to depend on the CTS line and the receiver chip, is there a way to continue the execution of the application regardless the state of the CTS line?[/quote]
&lt;p&gt;Perhaps you can try to explain why your application depends on the CTS line to continue execution. And also show where in the code that dependency happens.&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item></channel></rss>