| Table of Contents |
|---|
Configuration of the data acquisition (DA) modules
...
Publish strategy
...
| Include Page | ||||
|---|---|---|---|---|
|
Passive
...
modules without polling and timeout
currently available:
| DA module | description |
|---|---|
| trapd | SNMP trap daemon |
| gps_tcp_client | listen to GPS NMEA packet received from a TCP connection |
| gps_serial_client | listen to GPS NMEA packet received from a serial port |
These modules are not polling and are also not waiting up to a timeout time. They just listen and forward a result, when present.
...
Modules with interval and timeout
http_server
The http_server works passive regarding incoming notifications (no polling, no timeout) and is driven by actions to request images. These requests have a configurable timeout. If this timeout is exceeded the action ends up with an error.
...
The ap_scanner is a data acquisition module which scans Wireless Access Points on the neighborhood.
interval
Mandatory parameter which defines the interval in milliseconds between each scan.
| unit | min | max | default |
|---|---|---|---|
milliseconds | 1000 ms | undefined | undefined |
timeout
Mandatory parameter which defines the maximum amount of time that the scan is allowed to run, in milliseconds.
| unit | min | max | default |
|---|---|---|---|
milliseconds | 1000 ms | undefined | undefined |
...
In difference to the other DA modules the poll_interval is configured for the complete module but not separated in the sensor gateways.
...
Modules with scheduled polling
The DA modules, listed in this section use a configuration schema, which is defined in the XML schema definition (XSD).
...
These three DA modules essentially calculate
and perform the query up to trials times until they either get the result or specify the error of the query. This is done each polling_interval cycle.
...
Example
The following configuration example for the scheduling configuration
...
| Include Page | ||||
|---|---|---|---|---|
|
Example
TODO add heartbeat mode example.