1 files changed, 45 insertions, 0 deletions
diff --git a/counter.vhd b/counter.vhd
new file mode 100644
index 0000000..4ae6a2a
--- /dev/null
+++ b/counter.vhd
@@ -0,0 +1,45 @@
+
+
+library IEEE;
+use IEEE.STD_LOGIC_1164.all;
+use IEEE.std_logic_unsigned.all;
+use IEEE.numeric_std.all;
+
+entity counter is
+    port
+        (
+            divisor : in  std_logic_vector(15 downto 0) := (others => '0');
+            clk     : in  std_logic;
+            n_reset : in  std_logic;
+            clk_out : out std_logic
+            );
+end counter;
+
+
+architecture rtl of counter is
+
+    signal d :
+        std_logic_vector (15 downto 0);
+    signal q :
+        std_logic;
+begin
+
+    clk_out <= q;
+    process (clk, d, q, divisor, n_reset)
+    begin
+        if n_reset = '0' then
+            d <= (others => '0');
+            q <= '0';
+        elsif RISING_EDGE(clk) then
+
+            if d < divisor then
+                d <= d + 1;
+            else
+                d <= (others => '0');
+                q <= not q;
+            end if;
+        end if;
+    end process;
+
+end rtl;
+