User's Manual

Project
DATE
22/06/20
TCU-FITAX-3.5
FCC Certification
REFERENCE
LEVEL
V01.04
SHEET
42/45
Link to TOP INDEX
BY
MVT
Version:
V01.00
V01.01
V01.02
V01.03
V01.04
Author:
MVT
MVT
MVT
MVT
MVT
Date:
23/03/20
11/05/20
20/05/20
22/05/20
22/06/20
FICOSA INTERNATIONAL S.A. 2016. This document or its contents may not be communicated
or distributed to third parties or reproduced in whole or in part without the express permission of FICOSA
This application does not provide a command line interface and its functionality
shall be exploited through the usage of MQTT API as described in this section.
5. sysLogger: sysLogger (short for System Logger) is an application running on
OBU's main board that periodically collects OBU system logs, primarily by
requesting status information to sysMng applications present on the MQTT
network.
Applications can request log historics to the sysLogger through specific MQTT
topics.
This application does not provide a command line interface and, as sysMng, its
functionality has to be exploited through the usage of MQTT API.
11.3.3 API over MQTT
The API defines two channels:
1. Response/Event topics: An application can subscribe to these topics in order
to get notified when some event triggers or to get the answer to given request.
2. Request topics: An application can publish to this topic to control the OBU or
some of the components or to inject DATA to CAN or to V2X stack.
11.3.4 MQTT Channels specification
The API offers a MQTT tree structure for topics. Applications can subscribe to the root
of the tree or to a specific leaf getting different results. Below it is shown an example
in order to ease understanding.