Design of Stepper Motor Driver (Full Step) using Behavior Modeling Style (VHDL Code).

Design of Stepper Motor Driver (Full Step) using Behavior Modeling Style -

Output Waveform  :  Stepper Motor Driver (Full Step).

VHDL Code -


-------------------------------------------------------------------------------
--
-- Title       : stepper_driver_full_step
-- Design      : vhdl_upload2
-- Author      : Naresh Singh Dobal
-- Company     : nsdobal@gmail.com
-- VHDL Programs &  Exercise with Naresh Singh Dobal.
--
-------------------------------------------------------------------------------
--
-- File        : Stepper Motor Driver (full step).vhd



library IEEE;
use IEEE.STD_LOGIC_1164.all;       
use ieee.std_logic_arith.all;
use ieee.std_logic_unsigned.all;

entity stepper_driver_full_step is
     port(
         clk : in STD_LOGIC;
         start : in STD_LOGIC;
         dout : out STD_LOGIC_VECTOR(3 downto 0)
         );
end stepper_driver_full_step;


architecture stepper_driver_arc of stepper_driver_full_step is
begin

    stepper : process (clk,start) is
    variable m : std_logic_vector (1 downto 0) := "00";
    begin
        if (start='1') then
            if (rising_edge (clk)) then
                m := m + 1;
            end if;
        end if;
       
        case m is
            when "00" => dout <= "1000";  
            when "01" => dout <= "0100";
            when "10" => dout <= "0010";
            when others => dout <= "0001";
        end case;
    end process stepper;

end stepper_driver_arc;