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4.6 Transducer
type: transducer
server : evatas trans server
network level: TCP
application level: custom binary, msgpack based
Service is intended to connect external devices, SOC boards (currently Raspberry Pi used) with
“transducer” program installed. It can deliver packets from different source protocols to EVA TAS
system. Therefore configuration can include several upstream protocol entries.
General options:
autostart — transducer could not connect to service, when it is false;
handlers — handlers list to process packets, currently only “espa” and “serial printer” handlers
supported. Some other types are in development.
Service can not be started or stopped. It starts on connection establishing, in case if state is
active.
4.6.1 ESPA handler parameters
Some parameters, with the same meaning, applicable to handlers. Complete list:
type — should be espa;
name — unique across handlers of type espa;
process reset — process reset action;
initiator — alarms initiator;
espa system id — system id value if not provided by protocol;
regexps — regular expressions.
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4.6.2 Serial printer handler parameters
Some parameters, with the same meaning, applicable to handlers. Complete list:
type — should be serial_printer;
name — unique across handlers of type serial_printer;
initiator — alarm initiator;
regexps — regular expressions.