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README.md

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+# State machine generator
+
+This tool is used to describe a state machine in dot format (used by Graphviz).
+It then generates the corresponding C++ code with identified callbacks.
+
+## Usage
+- Create a Python3 virtualenv with pydot installed
+- Create a dot file with the state machine named "state_machine.gv"
+- Run 'make png' to see the PNG representation
+- Run 'make cpp' to generate the C++ code
+
+## C++ code
+The tool will generate 3 files:
+- 'state_machine.h' and 'state_machine.cpp' that contain the skeleton of the
+  state machine
+- 'state_impl.cpp' that contains the empty callbacks
+
+You can compile these sources with a simple main like the one provided.