https://devzone.nordicsemi.com/f/nordic-q-a/73476/mqtt-and-gpsI have an application where i have to regularly send gps data to an mqtt broker. I started with the mqtt sample which works fine, and i also tried the gps example with assited fix over supl which also works fine. When it comes to combinig the two examplesen-USTelligent Community 13Wed, 07 Apr 2021 09:21:46 GMThttps://devzone.nordicsemi.com/thread/303413?ContentTypeID=1Wed, 07 Apr 2021 09:21:46 GMT137ad170-7792-4731-bb38-c0d22fbe4515:31653e72-28ec-4b56-9de9-4ca734024edfH&#229;kon Alseth<p>Hi,</p> <p>&nbsp;</p> <p>The path of least resistance is normally looking at two (or more) samples that match your requirement, and then combining these into one project.</p> <p>&nbsp;</p> <p>the&nbsp;&quot;gps&quot; application turns on/off the LTE link, while&nbsp;a more wide-spread approach is to&nbsp;enter eDRX/PSM, then start the GPS.</p> <p>First, I would recommend that you enable both GPS and your LTE PHY (NB1 or LTE-M1), by setting:</p> <p><pre class="ui-code" data-mode="text"># M1 + GPS CONFIG_LTE_NETWORK_MODE_LTE_M_GPS=y OR: # NB1 + GPS CONFIG_LTE_NETWORK_MODE_NBIOT_GPS=y</pre></p> <p>&nbsp;</p> <p>Then use the <a href="https://infocenter.nordicsemi.com/topic/ref_at_commands/REF/at_commands/packet_domain/cscon.html?cp=2_1_6_16">CSCON notification</a> to ensure that the link is inactive, so you can start the GPS, and then stop it when your application criterias are met.</p> <p>The initialization and gps-handling can be taken from the &quot;gps&quot; sample.</p> <p>&nbsp;</p> <p>Let me know if you run into any issues!</p> <p>&nbsp;</p> <p>Kind regards,</p> <p>Håkon</p><div style="clear:both;"></div>