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authorrahulp132019-12-04 11:49:21 +0530
committerrahulp132019-12-04 11:49:21 +0530
commit0095eb955212199f27ccee94f88871c3b202a7b2 (patch)
treec17b440630247977092973bb944255927572157e /Example/counter/updown_counter.vhdl
parent96c30a142de5fe48e9765934eb5a073ea9318cf4 (diff)
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Diffstat (limited to 'Example/counter/updown_counter.vhdl')
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diff --git a/Example/counter/updown_counter.vhdl b/Example/counter/updown_counter.vhdl
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--- a/Example/counter/updown_counter.vhdl
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-library IEEE;
-use IEEE.STD_LOGIC_1164.ALL;
-use IEEE.numeric_std.ALL;
-
-
-entity updown_counter is
- Port ( clk: in std_logic;
- reset: in std_logic;
- up_down: in std_logic;
- counter: out std_logic_vector(3 downto 0)
- );
-end updown_counter;
-
-architecture Behavioral of updown_counter is
-signal tmp: std_logic_vector(3 downto 0);
-begin
-
-process(clk,reset)
-begin
- if(reset='1') then
- tmp <= "0000";
- elsif(clk'event and clk='1') then
- if(up_down='1') then
- tmp <= std_logic_vector(to_unsigned(to_integer(unsigned(tmp)-1), tmp'length));
- else
- tmp <= std_logic_vector(to_unsigned(to_integer(unsigned(tmp)+1), tmp'length));
- end if;
- end if;
-end process;
- counter <= std_logic_vector(tmp);
-
-end Behavioral; \ No newline at end of file