100 lines
3.0 KiB
Markdown
100 lines
3.0 KiB
Markdown
# WireViz
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## Summary
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WireViz is a simple yet flexible markup language for documenting wires and connector pinouts with beautiful graphical output.
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It is based on [GraphViz](https://www.graphviz.org/) and designed as an "extension" of it. A parser reads a WireViz file and generates valid GraphViz output, which can instantly be rendered to SVG/PNG.
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## Features
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* WireViz is fully text based
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* No special editor required
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* Human readable
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* Easy version control
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* GraphViz-like syntax
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* Understands and uses color abbreviations as per [IEC 60757](https://en.wikipedia.org/wiki/Electronic_color_code#Color_band_system) (black=BK, red=RD, ...)
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* Auto-generates standard wire color schemes and allows custom ones if needed
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* [DIN 47100](https://en.wikipedia.org/wiki/DIN_47100) (WT/BN/GN/YE/GY/PK/BU/RD/BK/VT/...)
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* [IEC 62](https://en.wikipedia.org/wiki/Electronic_color_code#Color_band_system) (BN/RD/OR/YE/GN/BU/VT/GY/WT/BK/...)
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* Allows more than one connector per side, as well as loopbacks
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* Will include images of known connectors, together with their pinouts
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## Example
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WireViz input file:
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// define connectors
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X1 [type="D-Sub",
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gender="female",
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pin_labels="DCD|RX|TX|DTR|GND|DSR|RTS|CTS|RI",
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]
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X2 [type="Molex KK 254",
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gender="female",
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pin_labels="GND|RX|TX|NC|OUT|IN",
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]
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// define wire
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W1 [mm2=0.25,
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length=0.2,
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num_wires=3,
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colors="din47100",
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shield=true
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]
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// define connections
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X1:5 -> W1:1 -> X2:1 // GND
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X1:2 -> W1:2 -> X2:3 // TX-RX
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X1:3 -> W1:3 -> X2:2 // RX-TX
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X1:5 -> W1:S // shield
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X2:5 -> X2:6 // loop
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Output file:
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GraphViz code generated by parser:
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digraph G {
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graph [rankdir = LR, ranksep=2, fontname = "arial"];
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edge [arrowhead=none, fontname = "arial"];
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node [shape=record, style=rounded, fontname = "arial"];
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X1[label="X1 | {D-Sub DE-9|female|9-pin} | {{DCD|RX|TX|DTR|GND|DSR|RTS|CTS|RI} | {<p1>1|<p2>2|<p3>3|<p4>4|<p5>5|<p6>6|<p7>7|<p8>8|<p9>9}}}"]
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X2[label="X2 | {Molex KK 254|female|6-pin} | {{<p1>1|<p2>2|<p3>3|<p4>4|<p5>5|<p6>6} | {|||||}}}"]
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{edge[style=bold]
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X2:p5:w -> X2:p6:w
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}
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W1[label="W1 | {3x|0.25 mm²| + S|0.2 m} | {{<w1i>1|<w2i>2|<w3i>3|<wsi>} | {WH|BN|GN|Shield} | {<w1o>1|<w2o>2|<w3o>3|<wso>}}}"]
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{edge[style=bold]
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{edge[color="#000000:#ffffff:#000000"] X1:p5 -> W1:w1i; W1:w1o -> X2:p1}
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{edge[color="#000000:#666600:#000000"] X1:p2 -> W1:w2i; W1:w2o -> X2:p3}
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{edge[color="#000000:#00ff00:#000000"] X1:p3 -> W1:w3i; W1:w3o -> X2:p2}
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{X1:p5 -> W1:wsi; }
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}
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}
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[Example 2](idea/example2.dot)
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## Status
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This is very much a work in progress, and mainly an idea in my head.
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A Python module and test scripts is available. Running the test script will generate GraphViz output.
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The parser will follow later; contributions are welcome!
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## License
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GNU GPLv3
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