Created question in FIWARE Q/A platform on 26-07-2019 at 14:07
Please, ANSWER this question AT https://stackoverflow.com/questions/57220573/how-to-issue-command-to-orion

Question:
How to issue command to Orion

Description:
I have a camera and I want to send it a command to take a snapshot. My setup is Orion <-> iotagent-json <> mosquitto <-> device.

However, when I try to issue a command the iotagent does not receive anything.

The request I used for provisioning the device (to the agent):

curl -X POST \
http://localhost1:4041/iot/devices \
-H 'Content-Type: application/json' \
-H 'fiware-service: actuatoriot' \
-H 'fiware-servicepath: /' \
-d '{
"devices": [
{
"device_id": "actuatorCamera002",
"entity_name": "urn:ngsi-ld:ActuatorCamera:002",
"entity_type": "Actuator",
"protocol": "PDI-IoTA-UltraLight",
"transport": "MQTT",
"timezone": "Europe/Berlin",
"commands": [

]
}
]
}'

The device created on Agent:

{
"device_id":"actuatorCamera002",
"service":"actuatoriot",
"service_path":"/",
"entity_name":"urn:ngsi-ld:ActuatorCamera:002",
"entity_type":"Actuator",
"transport":"MQTT",
"attributes":[

],
"lazy":[

],
"commands":[

],
"static_attributes":[

],
"protocol":"PDI-IoTA-UltraLight"
}

The entity created on Orion:

{
"id": "urn:ngsi-ld:ActuatorCamera:002",
"type": "Actuator",
"Screen_info": {
"type": "commandResult",
"value": "aaa",
"metadata": {}
},
"Screen_status": {
"type": "commandStatus",
"value": "UNKNOWN",
"metadata": {}
},
"TimeInstant": {
"type": "ISO8601",
"value": " ",
"metadata": {}
}
}

I have tried sending PATCH requests on the entity values but nothing seems to be getting pushed to the iotagent-json.

(I have been using the iotagent and Orion for sensor measurements and everything works fine.)