📄 tb_uart.ant
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--------------------------------------------------------------------------------
-- Copyright (c) 1995-2003 Xilinx, Inc.
-- All Right Reserved.
--------------------------------------------------------------------------------
-- ____ ____
-- / /\/ /
-- /___/ \ / Vendor: Xilinx
-- \ \ \/ Version : 7.1.04i
-- \ \ Application : ISE Foundation
-- / / Filename : tb_uart.ant
-- /___/ /\ Timestamp : Sun Mar 15 21:55:01 2009
-- \ \ / \
-- \___\/\___\
--
--Command:
--Design Name: tb_uart
--Device: Xilinx
--
library IEEE;
use IEEE.STD_LOGIC_1164.ALL;
use IEEE.STD_LOGIC_ARITH.ALL;
use IEEE.STD_LOGIC_UNSIGNED.ALL;
USE IEEE.STD_LOGIC_TEXTIO.ALL;
USE STD.TEXTIO.ALL;
ENTITY tb_uart IS
END tb_uart;
ARCHITECTURE testbench_arch OF tb_uart IS
FILE RESULTS: TEXT OPEN WRITE_MODE IS "F:\data file\uart01\tb_uart.ano";
COMPONENT top
PORT (
clk32mhz : In std_logic;
reset : In std_logic;
rxd : In std_logic;
xmit_cmd_p_in : In std_logic;
txdbuf_in : In std_logic_vector (7 DownTo 0);
rec_ready : Out std_logic;
txd_out : Out std_logic;
txd_done_out : Out std_logic;
clkout : Out std_logic;
rec_buf : Out std_logic_vector (7 DownTo 0)
);
END COMPONENT;
SIGNAL clk32mhz : std_logic := '0';
SIGNAL reset : std_logic := '1';
SIGNAL rxd : std_logic := '0';
SIGNAL xmit_cmd_p_in : std_logic := '0';
SIGNAL txdbuf_in : std_logic_vector (7 DownTo 0) := "00000000";
SIGNAL rec_ready : std_logic := '0';
SIGNAL txd_out : std_logic := '0';
SIGNAL txd_done_out : std_logic := '0';
SIGNAL clkout : std_logic := '0';
SIGNAL rec_buf : std_logic_vector (7 DownTo 0) := "00000000";
SHARED VARIABLE TX_ERROR : INTEGER := 0;
SHARED VARIABLE TX_OUT : LINE;
constant PERIOD : time := 200 ns;
constant DUTY_CYCLE : real := 0.5;
constant OFFSET : time := 0 ns;
BEGIN
UUT : top
PORT MAP (
clk32mhz => clk32mhz,
reset => reset,
rxd => rxd,
xmit_cmd_p_in => xmit_cmd_p_in,
txdbuf_in => txdbuf_in,
rec_ready => rec_ready,
txd_out => txd_out,
txd_done_out => txd_done_out,
clkout => clkout,
rec_buf => rec_buf
);
PROCESS -- clock process for clk32mhz
BEGIN
WAIT for OFFSET;
CLOCK_LOOP : LOOP
clk32mhz <= '0';
WAIT FOR (PERIOD - (PERIOD * DUTY_CYCLE));
clk32mhz <= '1';
WAIT FOR (PERIOD * DUTY_CYCLE);
END LOOP CLOCK_LOOP;
END PROCESS;
PROCESS -- Annotation process for clk32mhz
VARIABLE TX_TIME : INTEGER := 0;
PROCEDURE ANNOTATE_rec_ready(
TX_TIME : INTEGER
) IS
VARIABLE TX_STR : String(1 to 4096);
VARIABLE TX_LOC : LINE;
BEGIN
STD.TEXTIO.write(TX_LOC, string'("Annotate["));
STD.TEXTIO.write(TX_LOC, TX_TIME);
STD.TEXTIO.write(TX_LOC, string'(", rec_ready, "));
IEEE.STD_LOGIC_TEXTIO.write(TX_LOC, rec_ready);
STD.TEXTIO.write(TX_LOC, string'("]"));
TX_STR(TX_LOC.all'range) := TX_LOC.all;
STD.TEXTIO.writeline(RESULTS, TX_LOC);
STD.TEXTIO.Deallocate(TX_LOC);
END;
PROCEDURE ANNOTATE_txd_out(
TX_TIME : INTEGER
) IS
VARIABLE TX_STR : String(1 to 4096);
VARIABLE TX_LOC : LINE;
BEGIN
STD.TEXTIO.write(TX_LOC, string'("Annotate["));
STD.TEXTIO.write(TX_LOC, TX_TIME);
STD.TEXTIO.write(TX_LOC, string'(", txd_out, "));
IEEE.STD_LOGIC_TEXTIO.write(TX_LOC, txd_out);
STD.TEXTIO.write(TX_LOC, string'("]"));
TX_STR(TX_LOC.all'range) := TX_LOC.all;
STD.TEXTIO.writeline(RESULTS, TX_LOC);
STD.TEXTIO.Deallocate(TX_LOC);
END;
PROCEDURE ANNOTATE_txd_done_out(
TX_TIME : INTEGER
) IS
VARIABLE TX_STR : String(1 to 4096);
VARIABLE TX_LOC : LINE;
BEGIN
STD.TEXTIO.write(TX_LOC, string'("Annotate["));
STD.TEXTIO.write(TX_LOC, TX_TIME);
STD.TEXTIO.write(TX_LOC, string'(", txd_done_out, "));
IEEE.STD_LOGIC_TEXTIO.write(TX_LOC, txd_done_out);
STD.TEXTIO.write(TX_LOC, string'("]"));
TX_STR(TX_LOC.all'range) := TX_LOC.all;
STD.TEXTIO.writeline(RESULTS, TX_LOC);
STD.TEXTIO.Deallocate(TX_LOC);
END;
PROCEDURE ANNOTATE_clkout(
TX_TIME : INTEGER
) IS
VARIABLE TX_STR : String(1 to 4096);
VARIABLE TX_LOC : LINE;
BEGIN
STD.TEXTIO.write(TX_LOC, string'("Annotate["));
STD.TEXTIO.write(TX_LOC, TX_TIME);
STD.TEXTIO.write(TX_LOC, string'(", clkout, "));
IEEE.STD_LOGIC_TEXTIO.write(TX_LOC, clkout);
STD.TEXTIO.write(TX_LOC, string'("]"));
TX_STR(TX_LOC.all'range) := TX_LOC.all;
STD.TEXTIO.writeline(RESULTS, TX_LOC);
STD.TEXTIO.Deallocate(TX_LOC);
END;
PROCEDURE ANNOTATE_rec_buf(
TX_TIME : INTEGER
) IS
VARIABLE TX_STR : String(1 to 4096);
VARIABLE TX_LOC : LINE;
BEGIN
STD.TEXTIO.write(TX_LOC, string'("Annotate["));
STD.TEXTIO.write(TX_LOC, TX_TIME);
STD.TEXTIO.write(TX_LOC, string'(", rec_buf, "));
IEEE.STD_LOGIC_TEXTIO.write(TX_LOC, rec_buf);
STD.TEXTIO.write(TX_LOC, string'("]"));
TX_STR(TX_LOC.all'range) := TX_LOC.all;
STD.TEXTIO.writeline(RESULTS, TX_LOC);
STD.TEXTIO.Deallocate(TX_LOC);
END;
BEGIN
WAIT for 1 fs;
ANNOTATE_rec_ready(0);
ANNOTATE_txd_out(0);
ANNOTATE_txd_done_out(0);
ANNOTATE_clkout(0);
ANNOTATE_rec_buf(0);
WAIT for OFFSET;
TX_TIME := TX_TIME + 0;
ANNO_LOOP : LOOP
--Rising Edge
WAIT for 115 ns;
TX_TIME := TX_TIME + 115;
ANNOTATE_rec_ready(TX_TIME);
ANNOTATE_txd_out(TX_TIME);
ANNOTATE_txd_done_out(TX_TIME);
ANNOTATE_clkout(TX_TIME);
ANNOTATE_rec_buf(TX_TIME);
WAIT for 85 ns;
TX_TIME := TX_TIME + 85;
END LOOP ANNO_LOOP;
END PROCESS;
PROCESS
BEGIN
-- ------------- Current Time: 285ns
WAIT FOR 285 ns;
txdbuf_in <= "00000001";
-- -------------------------------------
-- ------------- Current Time: 485ns
WAIT FOR 200 ns;
txdbuf_in <= "00000010";
-- -------------------------------------
-- ------------- Current Time: 685ns
WAIT FOR 200 ns;
reset <= '0';
txdbuf_in <= "00000011";
-- -------------------------------------
-- ------------- Current Time: 885ns
WAIT FOR 200 ns;
txdbuf_in <= "00000100";
-- -------------------------------------
-- ------------- Current Time: 1085ns
WAIT FOR 200 ns;
txdbuf_in <= "00000101";
-- -------------------------------------
-- ------------- Current Time: 1285ns
WAIT FOR 200 ns;
xmit_cmd_p_in <= '1';
txdbuf_in <= "00000110";
-- -------------------------------------
-- ------------- Current Time: 1485ns
WAIT FOR 200 ns;
rxd <= '1';
txdbuf_in <= "00000111";
-- -------------------------------------
-- ------------- Current Time: 1685ns
WAIT FOR 200 ns;
txdbuf_in <= "00001000";
-- -------------------------------------
-- ------------- Current Time: 1885ns
WAIT FOR 200 ns;
txdbuf_in <= "00001001";
-- -------------------------------------
-- ------------- Current Time: 2085ns
WAIT FOR 200 ns;
txdbuf_in <= "00001010";
-- -------------------------------------
-- ------------- Current Time: 2285ns
WAIT FOR 200 ns;
txdbuf_in <= "00001011";
-- -------------------------------------
-- ------------- Current Time: 2485ns
WAIT FOR 200 ns;
txdbuf_in <= "00001100";
-- -------------------------------------
-- ------------- Current Time: 2685ns
WAIT FOR 200 ns;
txdbuf_in <= "00001101";
-- -------------------------------------
-- ------------- Current Time: 2885ns
WAIT FOR 200 ns;
txdbuf_in <= "00001110";
-- -------------------------------------
-- ------------- Current Time: 3085ns
WAIT FOR 200 ns;
txdbuf_in <= "00001111";
-- -------------------------------------
-- ------------- Current Time: 3285ns
WAIT FOR 200 ns;
txdbuf_in <= "00010000";
-- -------------------------------------
-- ------------- Current Time: 3485ns
WAIT FOR 200 ns;
txdbuf_in <= "00010001";
-- -------------------------------------
-- ------------- Current Time: 3685ns
WAIT FOR 200 ns;
txdbuf_in <= "00010010";
-- -------------------------------------
-- ------------- Current Time: 3885ns
WAIT FOR 200 ns;
txdbuf_in <= "00010011";
-- -------------------------------------
-- ------------- Current Time: 4085ns
WAIT FOR 200 ns;
txdbuf_in <= "00010100";
-- -------------------------------------
-- ------------- Current Time: 4285ns
WAIT FOR 200 ns;
txdbuf_in <= "00010101";
-- -------------------------------------
-- ------------- Current Time: 4485ns
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