SEP DGEST SNEST

INSTITUTO TECNOLÓGICO DE MATAMOROS

DEPARTAMENTO DE INGENIERÍA ELÉCTRICA Y ELECTRÓNICA

Diseño Digital con VHDL

Equipo:

Alumno(s): Núm. de control:

Mario Arturo Cruz Colunga 11260077

Miguel Angel Fierros Peña 11260081

Hermenegildo Martínez de la Cruz 11260095

Jorge Alejandro Reyes Torres 11260108

H. MATAMOROS, TAM. 1 de Noviembre del 2013

Practica 9

Objetivo:

Realizar la implementación de un cronometro de 2 dígitos mediante aldec hdl y basys2.

Material:

Laptop

Kit spartan3e

Software aldec HDL, xilinx ISE, adept.

Procedimiento:

Se crea nuevo proyecto en aldec HDL Se crea un diagrama de estados

Clock second.library IEEE;use IEEE.STD_LOGIC_1164.ALL;use IEEE.STD_LOGIC_UNSIGNED.ALL;entity clockSecond isport (rst : in std_logic;clk : in std_logic;clkOut : out std_logic);end clockSecond;architecture behavioral of clockSecond is-- signal assignmentssignal counter : std_logic_Vector (27 downto 0);signal clkOutSignal : std_logic;beginprocess (clk, rst)

beginif (rst = '1') thenclkOutSignal <= '0';counter <= (others => '0');elsif (clk'event and clk = '1') thenif (counter = "1011111010111100001000000")thencounter <= (others => '0');clkOutSignal <= not clkOutSignal;elsecounter <= counter + 1;end if;end if;end process;-- output assignmentsclkOut <= clkOutSignal;end behavioral;

Counter7seg

library IEEE;use IEEE.STD_LOGIC_1164.ALL;use IEEE.STD_LOGIC_UNSIGNED.ALL;entity binary7decoder isport (binaryIn : in std_logic_vector (3 downto 0);sevenSegment : out std_logic_vector (7 downto 0));end binary7decoder;architecture behavioral of binary7decoder is-- signal declerationssignal sevenSegmentSignal : std_logic_vector (7 downto 0);beginprocess (binaryIn)begincase binaryIn iswhen "0000" =>sevenSegmentSignal (6 downto 0) <= "1000000";when "0001" =>sevenSegmentSignal (6 downto 0) <= "1111001";when "0010" =>sevenSegmentSignal (6 downto 0) <= "0100100";when "0011" =>sevenSegmentSignal (6 downto 0) <= "0110000";when "0100" =>sevenSegmentSignal (6 downto 0) <= "0011001";when "0101" =>sevenSegmentSignal (6 downto 0) <= "0010010";when "0110" =>sevenSegmentSignal (6 downto 0) <= "0000010";when "0111" =>sevenSegmentSignal (6 downto 0) <= "1111000";when "1000" =>sevenSegmentSignal (6 downto 0) <= "0000000";when others =>sevenSegmentSignal (6 downto 0) <= "0010000";end case;end process;-- dp is always zerosevenSegmentSignal(7) <= '1';-- output assignmentssevenSegment <= sevenSegmentSignal;end behavioral;

binary7decoder

library IEEE;use IEEE.STD_LOGIC_1164.ALL;use IEEE.STD_LOGIC_UNSIGNED.ALL;entity counter7seg isport (clk : in std_logic;rst : in std_logic;start : in std_logic;pause : in std_logic;continue : in std_logic;digitOne : out std_logic_vector (3 downto 0);digitTen : out std_logic_vector (3 downto 0));end counter7seg;architecture behavioral of counter7seg is-- signal assignmentssignal digitOneSignal : std_logic_vector (3 downto 0);signal digitTenSignal : std_logic_vector (3 downto 0);type states is (resetState, countState, pauseState);signal state : states;beginprocess (clk, rst)beginif (rst = '1') thenstate <= resetState;elsif (clk'event and clk = '1') thencase state iswhen resetState =>digitOneSignal <= (others => '0');digitTenSignal <= (others => '0');if (start = '1') thenstate <= countState;end if;when countState =>if (pause = '1') thenstate <= pauseState;end if;if (digitOneSignal = "1001") thendigitOneSignal <= (others => '0');digitTenSignal <= digitTenSignal + '1';

if (digitTenSignal = "1001") thendigitTenSignal <= (others =>'0');end if;elsedigitOneSignal <= digitOneSignal + '1';end if;when pauseState =>if (continue = '1') thenstate <= countState;end if;end case;end if;end process;-- output signal assignmentsdigitOne <= digitOneSignal;digitTen <= digitTenSignal;end behavioral;anodecontrollerlibrary IEEE;use IEEE.STD_LOGIC_1164.ALL;use IEEE.STD_LOGIC_UNSIGNED.ALL;entity anodeController isport (clk : in std_logic;an0 : out std_logic;an1 : out std_logic;an2 : out std_logic;an3 : out std_logic);end anodeController;architecture behavioral of anodeController is-- signal declerationssignal an0Signal : std_logic;signal an1Signal : std_logic;signal an2Signal : std_logic;signal an3Signal : std_logic;beginprocess (clk)beginif (clk = '0') thenan2Signal <= '1';

an3Signal <= '0';elsean2Signal <= '0';an3Signal <= '1';end if;end process;-- an0 & an1 are always '1'an0Signal <= '1';an1Signal <= '1';-- output assignmentsan0 <= an0Signal;an1 <= an1Signal;an2 <= an2Signal;an3 <= an3Signal;end behavioral;anodeclocklibrary IEEE;use IEEE.STD_LOGIC_1164.ALL;use IEEE.STD_LOGIC_UNSIGNED.ALL;entity anodeClock isport (rst : in std_logic;clk : in std_logic;clkOut : out std_logic);end anodeClock;architecture behavioral of anodeClock is-- signal assignmentssignal counter : std_logic_Vector (19 downto 0);signal clkOutSignal : std_logic;beginprocess (clk, rst)beginif (rst = '1') thenclkOutSignal <= '0';counter <= (others => '0');elsif (clk'event and clk = '1') thenif (counter = x"186a0")thencounter <= (others => '0');clkOutSignal <= not clkOutSignal;elsecounter <= counter + 1;

end if;end if;end process;clkOut <= clkOutSignal;end behavioral;sevenselectlibrary IEEE;use IEEE.STD_LOGIC_1164.ALL;use IEEE.STD_LOGIC_UNSIGNED.ALL;entity sevenSelect isport (an2 : in std_logic;an3 : in std_logic;sevenOne : in std_logic_vector (7 downto 0);sevenTen : in std_logic_vector (7 downto 0);sevenOut : out std_logic_vector (7 downto 0));end sevenSelect;architecture behavioral of sevenSelect is-- signal declerationssignal sevenOutSignal : std_logic_vector (7 downto 0);beginprocess (an2, an3, sevenOne, sevenTen)beginif (an2 = '1' and an3 = '0') thensevenOutSignal <= sevenTen;elsesevenOutSignal <= sevenOne;end if;end process;-- output assignmentssevenOut <= sevenOutSignal;end behavioral;

Diagrama bde top

rst clkOut

clk

U1

anodeClock

clk an0

an1

an2

an3

U2

anodeControllerrst clkOut

clk

U3

clockSecondclk digitOne(3:0)

rst digitTen(3:0)

start

pause

continue

U4

counter7seg

startpause

continue

an0an1

rst

clk

an2an3

binaryIn(3:0) sevenSegment(7:0)

U8

binary7decoder

binaryIn(3:0) sevenSegment(7:0)

U6

binary7decoder

an2 sevenOut(7:0)

an3

sevenOne(7:0)

sevenTen(7:0)

U5

sevenSelect

sevenOut(7:0)

Observaciones y conclusiones:

El programa realiza el conteo mediante 2 dígitos como lo hace un cronometro. Siendo la velocidad de conteo clocksecond, el conteo realizado por counter7seg, binary7decoder el decodificador a 7 segmentos y por digito y sevenselect el encargado de seleccionar cada uno de los digitos a mostrar a la velocidad de anodeclock.