Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

DE2 push buttons question

I have a simple counter in VHDL for DE2-115 (should work with any DE2). KEY0 starts counting, KEY1 stops, KEY2 resets. The output is displayed on 7-seg LEDs HEX0 - HEX3 in hexa digits (to be simple m...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

P1: process (key(0))

begin

if (rising_edge(key(0)) then

run <= not run;

reset <= '0';

end if;

end process;

P2: process (key(1))

begin

if (rising_edge(key(1)) then

if (run = '0') then

hex6 <= hex6 - 1;

else

hex6 <= hex6 + 1;

end if;

end if;

end process;