Changes

==How MQTT works==

==How MQTT works==

First lets look over how MQTT works on RUT routers. An MQTT connection takes place between two Clients and a Broker. A RUT router can be Broker, a Client or both. The MQTT Publisher (Client) present in RUT routers subscribes to two topics by default: '''router/get''' and '''get/<SERIAL>/command''', where '''<SERIAL>''' is the router's serial number. A third party  

First lets look over how MQTT works on RUT routers. An MQTT connection takes place between two Clients and a Broker. A RUT router can be Broker, a Client or both. The MQTT Publisher (Client) present in RUT routers subscribes to two topics by default: '''router/get''' and '''get/<SERIAL>/command''', where '''<SERIAL>''' is the router's serial number. When a third party client connects to the Broker, it sends the message '''id''' to the the topic '''router/get'''. The publisher then sends a response containing its serial number to the topic '''router/id'''. Now that the Client knows the router's serial number it can ask for values of various parameters by sending requests to the topic '''router/<SERIAL>/parameter_name'''. The MQTT Publisher can send responses containing values of these system parameters:

 

{| class="wikitable"

{| class="wikitable"

|+

|+

! style="width: 250px; background: black; color: white;"  | Field name

! style="width: 250px; background: black; color: white;"  | Parameter name

! style="width: 250px; background: black; color: white;"  | Value

! style="width: 250px; background: black; color: white;"  | Parameter description

|-

|-

! style="text-align: left; vertical-align: top;" | Enable

! style="text-align: left; vertical-align: top;" | temperature

| style="text-align: left; vertical-align: top;" | yes {{!}} no; Default: '''no'''

| style="text-align: left; vertical-align: top;" | Temperature of the module in 0.1 degrees Celsius

|-

|-

! style="text-align: left; vertical-align: top;" | Local Port

! style="text-align: left; vertical-align: top;" | operator

| style="text-align: left; vertical-align: top;" | integer [0..65535]; Default: " "

| style="text-align: left; vertical-align: top;" | Current operator’s name

|-

|-

! style="text-align: left; vertical-align: top;" | Enable Remote Access

! style="text-align: left; vertical-align: top;" | signal

| style="text-align: left; vertical-align: top;" | yes {{!}} no; Default: '''no'''

| style="text-align: left; vertical-align: top;" | Signal strength in dBm

| style="text-align: left; vertical-align: top;" | If enabled, MQTT Broker will be reachable by remote user (from WAN)

! style="text-align: left; vertical-align: top;" | wan

| style="text-align: left; vertical-align: top;" | Value of digital input no. 1

| style="text-align: left; vertical-align: top;" | Value of digital input no. 2

|-

! style="text-align: left; vertical-align: top;" | analog

|-

|-

|}

|}