NetModule Router Wiki

User Tools

Site Tools

no way to compare when less than two revisions

Differences

This shows you the differences between two versions of the page.


—app-notes:metric-cloudsetup:sdk-gnss-mqtt-publish [2020/11/12 09:34] (current) – created erdmann
Line 1: Line 1:
 +<file c sdk-gnss-mqtt-publish.are>
 +HOST = "123.123.123.123"; 
 +PORT = 1883;
 +KEEPALIVE = 60;
 +PROTOCOL = "V31";
 +USERNAME = "mqtt-username";
 +PASSWORD = "mqtt-password";
 +CLIENT_ID = "SDK-GPS";
 +TOPIC = "your-topic";
 +QOS = 0;
 +RETAIN = 0; 
 +MESSAGE = "";
 +CLEAN_SESSION = true;
 +MQTT_HANDLE = 0;
  
 +/*create new mqtt instance*/
 +MQTT_HANDLE = nb_mqttlib_new(CLIENT_ID, CLEAN_SESSION);
 + 
 +if (nb_mqttlib_set_protocol_version(MQTT_HANDLE, PROTOCOL)  < 0 ) {
 +  printf("Unable to set Protocol version\n");
 +    exit(1);
 +}
 +
 +if (nb_mqttlib_set_user_pw(MQTT_HANDLE, USERNAME, PASSWORD) < 0 ) {
 + printf("Unable to set Username and Passsword\n");
 +
 + exit(1);
 +}
 +
 +if (nb_mqttlib_connect(MQTT_HANDLE, HOST, PORT, KEEPALIVE) < 0 ) {
 + printf("Unable to connect\n");
 + exit(1);
 +}
 +
 +
 +while (1) {
 + sys_tmp = nb_status("system").TEMPERATURE;
 + gps_long = nb_status("gnss").GNSS1_LONGITUDE;
 + gps_lat = nb_status("gnss").GNSS1_LATITUDE;
 + gps_hdop = nb_status("gnss").GNSS1_HDOP;
 + gps_vdop = nb_status("gnss").GNSS1_VDOP;
 + gps_pdop = nb_status("gnss").GNSS1_PDOP;
 + gps_altitude = nb_status("gnss").GNSS1_ALTITUDE;
 + gps_satellites_used = nb_status("gnss").GNSS1_SATELLITES_USED;
 + gps_satellites_inview = nb_status("gnss").GNSS1_SATELLITES_INVIEW;
 + gps_horizontal_speed = nb_status("gnss").GNSS1_HORIZONTAL_SPEED;
 + 
 + /* create the message */
 + MESSAGE=sprintf("%s,%s,%s,%s,%s,%s,%s,%s,%s,%s",sys_tmp, gps_long, gps_lat, gps_hdop, gps_vdop, gps_pdop, gps_altitude, gps_satellites_used, gps_satellites_inview, gps_horizontal_speed);
 + 
 + /*uncomment to view MESSAGE*/
 + //printf("%s", MESSAGE);
 + 
 + /* publish the message to mqtt broker */
 + ret = nb_mqttlib_publish(MQTT_HANDLE, TOPIC, MESSAGE, QOS, RETAIN);
 +
 +if(ret<0){
 + nb_syslog("Failed to publish mqtt message");
 + }
 +
 +sleep(30);
 +}
 + 
 +exit(0);
 +</file>

Page Tools

app-notes/metric-cloudsetup/sdk-gnss-mqtt-publish.txt · Last modified: 2020/11/12 09:34 by erdmann