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Installation

TinyFSM is an header-only library, no special installation steps are needed. Just point your compiler to the "include" directory, and in your source files:

#include <tinyfsm.hpp>

Prerequisites

TinyFSM requires a compiler supporting the C++11 language standard ("-std=c++11" in gcc).

TinyFSM does not depend on RTTI, exceptions or any external library. If you need to compile without standard libraries (e.g. in conjunction with -nostdlib linker option), add -DTINYFSM_NOSTDLIB to the compiler options: this removes all dependencies on the standard library by disabling some compile-time type checks.

Building the Elevator Example

Change to the elevator example directory and compile the sources:

$ cd examples/elevator
$ make

Our elevator has call buttons on every floor, sensors reporting the current position, and an alarm button for emergency. These actors can be triggered via a simple command interface:

$ ./elevator
Motor: stopped
Motor: stopped
c=Call, f=FloorSensor, a=Alarm, q=Quit ?

Let's call the elevator to floor 2:

c=Call, f=FloorSensor, a=Alarm, q=Quit ? c
Floor ? 2
Motor: moving up
c=Call, f=FloorSensor, a=Alarm, q=Quit ?

Now the elevator is moving up, and we need to trigger the floor sensor:

c=Call, f=FloorSensor, a=Alarm, q=Quit ? f
Floor ? 1
Reached floor 1
c=Call, f=FloorSensor, a=Alarm, q=Quit ? f
Floor ? 2
Reached floor 2
Motor: stopped
c=Call, f=FloorSensor, a=Alarm, q=Quit ?

Now we simulate a sensor defect:

c=Call, f=FloorSensor, a=Alarm, q=Quit ? c
Floor ? 1
Motor: moving down
c=Call, f=FloorSensor, a=Alarm, q=Quit ? f
Floor ? 2
Floor sensor defect (expected 1, got 2)
*** calling maintenance ***
Motor: stopped