drewfish / arduino-trimwright Goto Github PK
View Code? Open in Web Editor NEWUML State Machines for Arduino
License: MIT License
UML State Machines for Arduino
License: MIT License
FYI
I got a linker error when trying to build a android library using another library that has the TrimWright .h and .cpp in it.
The error is:
out/target/product/myExperiment/obj_arm/SHARED_LIBRARIES/libneorender_intermediates/src/UsRenderer.o:UsRenderer.cpp:typeinfo for gfx::UsRenderer: error: undefined reference to 'typeinfo for StateMachineTrimWright::FSM'
The error was resolved by making the function below non virtual (it doesn't make sense to me why this would be a linker issue).
// This dispatches an event to the current state.
// It doesn't generally need to be overridden by child classes.
//virtual void dispatch(const Event* event);
void dispatch(const Event* event);
I observed in the blink example (blink/main.cpp) that the state machine first processes "ENTER" before processing "INIT".
blink.init((State) &Blink::stateON);
In the init() code below from TrimWright.cpp, what is the purpose of having it sending the SIG_ENTER before sending SIG_INIT? One would think that init() should only cause a SIG_INIT event.
FSM::init(State initial) { m_stateCurrent = initial; _TW_PSEUDO(m_stateCurrent, SIG_ENTER);
Is there a way to initialize the state machine without entering the state?
Eddie
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