{"id":136967,"date":"2020-05-16T07:40:12","date_gmt":"2020-05-16T14:40:12","guid":{"rendered":"https:\/\/m2msupport.net\/m2msupport\/?page_id=136967"},"modified":"2020-05-16T08:03:49","modified_gmt":"2020-05-16T15:03:49","slug":"atsmsub-subscribe-to-a-topic-with-mqtt-server","status":"publish","type":"page","link":"https:\/\/m2msupport.net\/m2msupport\/atsmsub-subscribe-to-a-topic-with-mqtt-server\/","title":{"rendered":"AT+SMSUB -Subscribe to a topic with MQTT server"},"content":{"rendered":"\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/m2msupport.net\/m2msupport\/wp-content\/uploads\/2020\/05\/at_smunsub.png\" alt=\"\" class=\"wp-image-32155\"\/><\/figure>\n\n\n<p>Try the below script in the <a href=\"https:\/\/m2msupport.net\/m2msupport\/download-at-command-tester-for-simcom-modules\/\">AT Command Tester tool<\/a>\n<\/p>\n<pre style=\"color: blue; background-color: white; border: 1px solid black;\">\/\/Script: at+smsub\n\/\/The AT commands in this script are applicable for Simcom modules only\n\/\/Check SIMCOM Module AT Command documentaiton\n\n\/\/Get the support for AT+SMPUB command\nAT+SMSUB=?\n\n\n\/\/Wait\nWAIT=1\n\n\/\/Activate the application network\nAT+CNACT=0,1\n\n\/\/Wait\nWAIT=1\n\n\/\/Set up the MQTT URL\nAT+SMCONF=\"URL\",\"test.mosquitto.org\",\"1883\"\n\n\/\/Wait\nWAIT=1\n\n\/\/Set up the MQTT time to connect server\nAT+SMCONF=\"KEEPTIME\",60\n\n\/\/Wait\nWAIT=1\n\n\/\/Connect to the MQTT server\nAT+SMCONN\n\n\/\/Wait\nWAIT=4\n\n\/\/Subcribe to a topic on the MQTT server\nAT+SMSUB=\"my_topic\",1\n\n\/\/Publish to the MQTT server\n\/\/Content length is 5, QoS is 1, server hold is 1\nAT+SMPUB=\"my_topic\",5,1,1\n\n\/\/Wait for the &gt; prompt\nWAIT=1\n\n\/\/Send the message\nHello\n\n\n\n<\/pre>\n<p>Output of the above script in the <a href=\"https:\/\/m2msupport.net\/m2msupport\/download-at-command-tester-for-simcom-modules\/\">AT Command Tester tool<\/a><\/p>\n<pre style=\"color: blue; background-color: #ffffcc; border: 1px solid black;\">AT+SMSUB=?\n\n+SMSUB: 128,(0-2)\n\nOK\nAT+CNACT=0,1\n\nOK\n\n+APP PDP: 0,ACTIVE\nAT+SMCONF=\"URL\",\"test.mosquitto.org\",\"1883\"\n\nOK\nAT+SMCONF=\"KEEPTIME\",60\n\nOK\nAT+SMCONN\n\nOK\nAT+SMSUB=\"my_topic\",1\n\nOK\nAT+SMPUB=\"my_topic\",5,1,1\n\n&gt; Hello\n\n+SMSUB: \"my_topic\",\"Hello\"\n\nOK\n\n\n\n\n<\/pre>\n<div class=\"video-responsive\"><iframe loading=\"lazy\" id=\"youTubePlayer\" src=\"https:\/\/www.youtube.com\/embed\/q5ti3lIX99Q\" width=\"750\" height=\"421\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/div>","protected":false},"excerpt":{"rendered":"<p>Try the below script in the AT Command Tester tool \/\/Script: at+smsub \/\/The AT commands in this script are applicable for Simcom modules only \/\/Check SIMCOM Module AT Command documentaiton \/\/Get the support for AT+SMPUB command AT+SMSUB=? \/\/Wait WAIT=1 \/\/Activate &hellip; <a href=\"https:\/\/m2msupport.net\/m2msupport\/atsmsub-subscribe-to-a-topic-with-mqtt-server\/\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"atcommands.php","meta":{"footnotes":""},"class_list":["post-136967","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/m2msupport.net\/m2msupport\/wp-json\/wp\/v2\/pages\/136967","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/m2msupport.net\/m2msupport\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/m2msupport.net\/m2msupport\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/m2msupport.net\/m2msupport\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/m2msupport.net\/m2msupport\/wp-json\/wp\/v2\/comments?post=136967"}],"version-history":[{"count":2,"href":"https:\/\/m2msupport.net\/m2msupport\/wp-json\/wp\/v2\/pages\/136967\/revisions"}],"predecessor-version":[{"id":136974,"href":"https:\/\/m2msupport.net\/m2msupport\/wp-json\/wp\/v2\/pages\/136967\/revisions\/136974"}],"wp:attachment":[{"href":"https:\/\/m2msupport.net\/m2msupport\/wp-json\/wp\/v2\/media?parent=136967"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}