[Backlogmanager] [FIWARE-JIRA] (HELP-13454) [fiware-stackoverflow] Send LoRa measures to Fiware IOT agent via MQTT

[Veronika Vlnkova (JIRA)]

     [ https://jira.fiware.org/browse/HELP-13454?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Veronika Vlnkova reassigned HELP-13454:
---------------------------------------

    Assignee: Jose Gato Luis

> [fiware-stackoverflow] Send LoRa measures to Fiware IOT agent via MQTT
> ----------------------------------------------------------------------
>
>                 Key: HELP-13454
>                 URL: https://jira.fiware.org/browse/HELP-13454
>             Project: Help-Desk
>          Issue Type: Monitor
>          Components: FIWARE-TECH-HELP
>            Reporter: Backlog Manager
>            Assignee: Jose Gato Luis
>              Labels: fiware, iot, json, lora, mqtt
>
> Created question in FIWARE Q/A platform on 06-02-2018 at 09:02
> {color: red}Please, ANSWER this question AT{color} https://stackoverflow.com/questions/48638932/send-lora-measures-to-fiware-iot-agent-via-mqtt
> +Question:+
> Send LoRa measures to Fiware IOT agent via MQTT
> +Description:+
> I have LoRa sensors which send measures with Cayenne LPP format payload.
> My Gateway(LOrank8v1) catches these packets and converts them to UDP.
> In the gateway there is a service(lora-gateway-bridge) which converts the packets from UDP to TCP/MQTT.
> Then the MQTT packets are published to the mosquitto MQTT broker in the cloud.
> Then i run lora-server and lora-app-server services in order to decrypt,decode and deduplicate the packets.
> Then i publish the decrypted information to the MQTT broker again.
> Here is an example of a publication after all these operations:
> application/1/node/0000000000000000/rx 
> {
>  "applicationID":"1",
>   "applicationName":"Temperature-Humidity",
>   "deviceName":"Temperature-Humidity",
>   "devEUI":"0000000000000  000",
>   "rxInfo":[
>     {
>       "mac":"1dee18c14948a955",
>       "rssi":-27,
>       "loRaSNR":9.5,
>       "name":"1dee18  c14948a955",
>       "latitude":0,
>       "longitude":0,
>       "altitude":0
>     }
>   ],
>   "txInfo": {
>     "frequency":8685  00000,
>     "dataRate": {
>       "modulation":"LORA",
>       "bandwidth":125,
>       "spreadFactor":9
>     },
>     "adr":false,
>     "codeRate":"4/5"
>   },
>   "fCnt":2,
>   "fPort":1,
>   "data":"AGcAxQFojA==",
>   "object": {
>     "temperatureSensor": {
>       "0":19.7
>     },
>     "humiditySensor": {
>       "1":70
>     }
>   }
> }
> Now i want to use Fiware's JSON/MQTT IOT agent to convert MQTT to NGSI in order to publish data to the Context Broker. 
> The data should be publised like this to be readable :
> $ mosquitto_pub -h $HOST_IOTAGENT_MQTT -u theUser -P thePassword -t /myapikey/mydevicemqtt/attrs -m '{ "t": 19,7, "h": 70}'
> Has anyone the same problem?
> Should i make a JSON parser and republish the data to another format into the MQTT Broker?
> How could i deal with this problem?



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