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2026-04-08 20:11:20 +02:00
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LIBRARY ieee;
USE ieee.std_logic_1164.ALL;
USE ieee.numeric_std.ALL;
ENTITY compteur is
PORT (
clk : IN STD_LOGIC;
rst_n : IN STD_LOGIC;
max : IN STD_LOGIC_VECTOR(3 DOWNTO 0);
enable : IN STD_LOGIC;
valeur : OUT STD_LOGIC_VECTOR(3 DOWNTO 0)
);
END compteur;
ARCHITECTURE archi OF compteur is
SIGNAL valeur_interne : STD_LOGIC_VECTOR(3 DOWNTO 0);
BEGIN
PROCESS (clk, rst_n)
begin
IF rst_n = '0' THEN
valeur_interne <= (OTHERS => '0');
else
IF rising_edge(clk) AND enable = '1' THEN
IF valeur_interne = max THEN
valeur_interne <= (OTHERS => '0');
else
valeur_interne <= STD_LOGIC_VECTOR(UNSIGNED(valeur_interne) + 1);
END IF;
END IF;
END IF;
END PROCESS;
valeur <= valeur_interne;
END archi;