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Torbjorn Carlqvist Admin, 09/01/2022 09:11 AM

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h1. Then LION fieldbus concept
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> LION is a joint venture between DAVITOR AB and Naronic AB
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The concept consists of the following parts:
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* Field bus specification
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* Hardware form factor
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* Source code
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The bus is fundamentally an i2c bus and the IO-modules along the bus is slaves controlled by one master.
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h3. Highlights
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* All slaves share same i2c address independent of the number of slaves. This lowers the complexity in the Master code when the whole bus looks like a singe i2c slave device independent of the number of modules.
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* Data points as channels.
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Currently supported channel types in the standard:
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** AL - Alert Channel. Special event channel to read when then ALERT line goes low.
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** AI - Analog Input
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** AO - Analog Output
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** DI - Digital Input
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** DO - Digital Output
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** SI - Input Stream. Forwards log text or serial data etc. to Master.
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** DA - Dali lightning control
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* A dedicated ALERT line telling the master to read the alert channel
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* Supports firmware boot loading of the slave modules over the filed bus.
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!LION.png!
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* Config - This is a daisy changed link that goes _through_ all slave modules. This line is used when performing channel setup but also when there is a need for stepping the bus for single modules access. Typically for maintenance, firmware upgrade etc.
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* Alert - Goes low if a slave module needs to tell the master to read data.
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* Clock - Clock signal
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* Data - Data signal
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* Power - The power supply for the slave module bus circuitry. Typically 3.3v.
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* High Power - Typically 12v-24v that can be used when there is high power consumers internally or external from the module. Eg. motors, solenoids and lightning.
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* Reset - When held low all modules bus chip will be rebooted.
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* GND - Common ground for both Power and High Power lines.
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h3. The channel concept in LION
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All data points on a LION bus has a channel number assignment within it's channel type context.
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Eg. If the device has three modules with 4 DO points each the total number of DO _channels_ are 12. After the initial (usual factory preset) channel assignment process is done the master will only work with channels, not modules and points.
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h3. Bus modes and adresses
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The LION Bus operates in three modes.
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* Data (0x28) - Normal operational mode
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* Config (0x2C) - Halted operation while each module are acceded individually.
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* Bootloader (0x33) - I used when modules need firmware upgrade
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h3. LION Tool
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A java software called LionTool can be downloaded to handle all operation needed for test and maintain the bus. The software act as the Master and supports all three bus modes.
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LionTool uses same java driver to become a LION master as the DTXr.
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To install, first make sure you are in /home/admin/liontool, then you can download from davitor repository by
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<pre>
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wget --user admin --password **** https://artifacts.davitor.com/repository/davitor-mvn-release/com/davitor/multigrator/lion/1.7/lion-1.7-app.zip
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</pre>
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Unzip the file and chose to Overwrite All if you have a previous version installed.
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Consult DAVITOR for correct version and password to use!
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%{color:red}If project:DTXr is installed and running it is important to stop that service first!%
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<pre>sudo systemctl stop dtx</pre>
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The path will be: **/home/admin/liontool**
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Unzip and run as
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*  For automatic module setup with channel adress assignment use option -a as:
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<pre>
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sudo java -jar lion-1.7.jar -a
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</pre>
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*  For test mode only where a test menu will be shown use:
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<pre>
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sudo java -jar lion-1.7.jar
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</pre>
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NOTE: For now, you do get an error message at start that is perfectly normal:
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"2022-05-20 10:45:08,939 main ERROR properties Properties has no parameter that matches element PatternMatch"
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%{color:red}If project:DTXr is installed you can start it again now!%
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<pre>sudo systemctl start dtx</pre>