mirror of
https://github.com/Klagarge/Cursor.git
synced 2024-11-23 09:53:29 +00:00
50 lines
1.8 KiB
VHDL
50 lines
1.8 KiB
VHDL
|
ARCHITECTURE test OF debouncer_tester IS
|
||
|
|
|
||
|
|
constant clockFrequency : real := 66.0E6;
|
||
|
|
constant clockPeriod : time := 1.0/clockFrequency * 1 sec;
|
||
|
|
signal clock_int : std_ulogic := '1';
|
||
|
|
|
||
|
|
BEGIN
|
||
|
|
------------------------------------------------------------------------------
|
||
|
|
-- reset and clock
|
||
|
|
reset <= '1', '0' after 3*clockPeriod;
|
||
|
|
clock_int <= not clock_int after clockPeriod/2;
|
||
|
|
clock <= transport clock_int after clockPeriod*9/10;
|
||
|
|
|
||
|
|
------------------------------------------------------------------------------
|
||
|
|
-- input signal
|
||
|
|
process
|
||
|
|
begin
|
||
|
|
input <= '0';
|
||
|
|
wait for 10*clockPeriod;
|
||
|
|
-- transition 0 to 1
|
||
|
|
input <= '1',
|
||
|
|
'0' after 1*clockPeriod,
|
||
|
|
'1' after 3*clockPeriod,
|
||
|
|
'0' after 5*clockPeriod,
|
||
|
|
'1' after 6*clockPeriod,
|
||
|
|
'0' after 8*clockPeriod,
|
||
|
|
'1' after 10*clockPeriod;
|
||
|
|
wait for 50*clockPeriod;
|
||
|
|
-- transition 1 to 0
|
||
|
|
input <= '0',
|
||
|
|
'1' after 1*clockPeriod,
|
||
|
|
'0' after 3*clockPeriod,
|
||
|
|
'1' after 5*clockPeriod,
|
||
|
|
'0' after 6*clockPeriod,
|
||
|
|
'1' after 8*clockPeriod,
|
||
|
|
'0' after 10*clockPeriod;
|
||
|
|
wait for 50*clockPeriod;
|
||
|
|
-- short 1 pulse
|
||
|
|
input <= '1',
|
||
|
|
'0' after 1*clockPeriod,
|
||
|
|
'1' after 3*clockPeriod,
|
||
|
|
'0' after 5*clockPeriod,
|
||
|
|
'1' after 6*clockPeriod,
|
||
|
|
'0' after 8*clockPeriod;
|
||
|
|
-- end of simulation
|
||
|
|
wait;
|
||
|
|
end process;
|
||
|
|
|
||
|
|
END ARCHITECTURE test;
|