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block FSA  //  Finite State Automaton



/* connector declarations outside this block:

connector InputInteger = input Integer;

connector OutputInteger = output Integer;

*/



InputInteger u; // external input

OutputInteger x; // state

parameter Real T = 1;



algorithm



when initial() then

x := 0;



elsewhen sample(0,T) then



if (pre(x) == 0) and (pre(u) == 0) then x := 2;

elseif (pre(x) == 0) and (pre(u) == 1) then x := 3;

elseif (pre(x) == 0) and (pre(u) == 2) then x := 4;

elseif (pre(x) == 1) and (pre(u) == 0) then x := 4;

elseif (pre(x) == 1) and (pre(u) == 1) then x := 0;

elseif (pre(x) == 2) and (pre(u) == 0) then x := 1;

elseif (pre(x) == 2) and (pre(u) == 1) then x := 3;

elseif (pre(x) == 2) and (pre(u) == 2) then x := 1;

elseif (pre(x) == 3) and (pre(u) == 1) then x := 0;

elseif (pre(x) == 3) and (pre(u) == 2) then x := 2;

elseif (pre(x) == 4) and (pre(u) == 1) then x := 3;

elseif (pre(x) == 4) and (pre(u) == 2) then x := 1;

else x := pre(x); // default

end if;



end when;

end FSA;
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