<?xml version="1.0" encoding="UTF-8" ?>
<?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>Why Serial LTE modem（SLM）doesn&amp;#39;t work on SIAA.</title><link>https://devzone.nordicsemi.com/f/nordic-q-a/114443/why-serial-lte-modem-slm-doesn-t-work-on-siaa</link><description>Hi. I wrote a firmware on nrf9160(SIAA chip), but it doesn&amp;#39;t work. On the hardware side, the circuit is same as that of nrf9160-DK, CTS and RTS is short respectively. 
 If the firmware is normal, I&amp;#39;ll expect the firmware transmits &amp;quot;Ready&amp;quot;. But, I activate</description><dc:language>en-US</dc:language><generator>Telligent Community 13</generator><lastBuildDate>Wed, 04 Sep 2024 09:23:18 GMT</lastBuildDate><atom:link rel="self" type="application/rss+xml" href="https://devzone.nordicsemi.com/f/nordic-q-a/114443/why-serial-lte-modem-slm-doesn-t-work-on-siaa" /><item><title>RE: Why Serial LTE modem（SLM）doesn't work on SIAA.</title><link>https://devzone.nordicsemi.com/thread/501115?ContentTypeID=1</link><pubDate>Wed, 04 Sep 2024 09:23:18 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:0ad70621-9a17-4bce-b89e-20f83fced3f9</guid><dc:creator>Hakon</dc:creator><description>&lt;p&gt;I would advice you to capture a modem trace then.&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: Why Serial LTE modem（SLM）doesn't work on SIAA.</title><link>https://devzone.nordicsemi.com/thread/501057?ContentTypeID=1</link><pubDate>Wed, 04 Sep 2024 02:06:32 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:4d9c085c-ccec-4f83-a576-e96b0a1023bc</guid><dc:creator>shibuta</dc:creator><description>&lt;p&gt;Hello,&lt;/p&gt;
&lt;p&gt;I confirmed SICA chip works normally, but it won&amp;#39;t long an hour.&lt;/p&gt;
&lt;p&gt;SIAA chip has no response.&lt;/p&gt;
&lt;p&gt;On the other side, SICA, I can show the log below, I omitted the personal information as &amp;quot;...&amp;quot; .&lt;/p&gt;
&lt;p&gt;Should I add any other option in prj.conf ?&lt;/p&gt;
&lt;p&gt;I use TLS session. When I use modem side TLS, I failed to upload on SIAA (SICA is successful).&lt;/p&gt;
&lt;p&gt;Best regards.&lt;/p&gt;
&lt;p&gt;&lt;pre class="ui-code" data-mode="text"&gt;AT%CMNG=0,222,0,&amp;quot;
-----BEGIN CERTIFICATE-----
...
-----END CERTIFICATE-----&amp;quot;

 &amp;lt;-LTE(236 - 167) : Ready[OK]
 
 AT%XSYSTEMMODE=1,0,0,0

OK
AT+CGDCONT=0,&amp;quot;IP&amp;quot;,&amp;quot;...&amp;quot;

OK
AT+CFUN=1

OK
AT+CGDCONT?

+CGDCONT: 0,&amp;quot;IP&amp;quot;,&amp;quot;...&amp;quot;,&amp;quot;&amp;quot;,0,0

OK

:
:

AT+CGDCONT?

+CGDCONT: 0,&amp;quot;IP&amp;quot;,&amp;quot;...&amp;quot;,&amp;quot;MMM.NNN.OOO.PPP&amp;quot;,0,0

OK


AT#XHTTPCCON=1,&amp;quot;....amazonaws.com&amp;quot;,443,222

#XHTTPCCON: 1

OK
AT#XHTTPCREQ=&amp;quot;POST&amp;quot;,&amp;quot;...&amp;quot;,&amp;quot;User-Agent: slm\r\naccept: */*\r\n&amp;quot;,&amp;quot;2024/08/01 10:00:39,...,...&amp;quot;,32

OK

#XHTTPCREQ: 1
2024/08/24 16:54:39,WLA-051,28.6
+++
#XDATAMODE: 0

#XHTTPCREQ: 0
HTTP/1.1 200 OK
Date: Thu, 01 Aug 2024 01:35:43 GMT
Content-Type: application/json
Content-Length: 26
Connection: keep-alive
x-amzn-RequestId: d9caa529-f671-43f6-b204-0adff4aca122
x-amz-apigw-id: bzjxVHqnNjMEDCA=
X-Amzn-Trace-Id: Root=1-66aae5f1-4c2814ed165b9d8b153655d0;Parent=1dcfaf7248eacb1d;Sampled=0;lineage=7656a112:0


#XHTTPCRSP:334,1
CSV Processed Successfully
#XHTTPCRSP:26,1&lt;/pre&gt;&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: Why Serial LTE modem（SLM）doesn't work on SIAA.</title><link>https://devzone.nordicsemi.com/thread/500965?ContentTypeID=1</link><pubDate>Tue, 03 Sep 2024 11:55:53 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:a9fce20a-7c6b-4890-b4e2-74b506d993f5</guid><dc:creator>Hakon</dc:creator><description>&lt;p&gt;Hello,&lt;/p&gt;
[quote user=""]I wrote a firmware on nrf9160(SIAA chip), but it doesn&amp;#39;t work. [/quote]
&lt;p&gt;does this work with other hardware versions? Can you show the log?&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item></channel></rss>