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app-notes:metric-cloudsetup:sdk-gnss-mqtt-publish [2020/11/12 09:34] (current) erdmann created |
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| + | <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> | ||