vhdl codes for edge detection

[rajesh yadav]

hi friends,
i m working on a project "edge detection using vhdl" .by using c and mat lab it is implimented but i want to make it on vhdl .so please send me vhdl codes .

 

[jeppe]

The Rising_edge function will do the trick

Process (Clk)
begin
     if Rising_edge( Clk) then
           Q <= D;                        -- single Flip/Flop
           Counter <= Counter+1;   -- Count number of edges
     end if;
end process;