VHDL脚本语法错误
我有这个代码,我想做一个LSFR,但我有几个问题,包括: 错误:HDLParsers:3010-“C:/Users/user/Documents/tp_vhdl/media_LSFR/LSFR.vhd”第18行。实体LFSR不存在。VHDL脚本语法错误,vhdl,Vhdl,我有这个代码,我想做一个LSFR,但我有几个问题,包括: 错误:HDLParsers:3010-“C:/Users/user/Documents/tp_vhdl/media_LSFR/LSFR.vhd”第18行。实体LFSR不存在。 错误:HDLParsers:3312-“C:/Users/user/Documents/tp_vhdl/media_LSFR/LSFR.vhd”第19行。未定义符号“标准逻辑向量”。 错误:HDLParsers:1209-“C:/Users/user/Documen
错误:HDLParsers:3312-“C:/Users/user/Documents/tp_vhdl/media_LSFR/LSFR.vhd”第19行。未定义符号“标准逻辑向量”。
错误:HDLParsers:1209-“C:/Users/user/Documents/tp_vhdl/media_LSFR/LSFR.vhd”第19行。标准逻辑向量:未定义的符号(此块中的最后一个报告)
错误:HDLParsers:3312-“C:/Users/user/Documents/tp_vhdl/media_LSFR/LSFR.vhd”第20行。未定义的符号“标准逻辑”。
错误:HDLParsers:1209-“C:/Users/user/Documents/tp_vhdl/media_LSFR/LSFR.vhd”第20行。标准逻辑:未定义的符号(此块中的最后一个报告)
错误:HDLParsers:3312-“C:/Users/user/Documents/tp_vhdl/media_LSFR/LSFR.vhd”第24行。未定义的符号“s_xor1” 守则:
library ieee;
use ieee.std_logic_1164.all;
use IEEE.STD_LOGIC_ARITH.ALL;
use IEEE.STD_LOGIC_UNSIGNED.ALL;
library IEEE;
use IEEE.STD_LOGIC_1164.ALL;
entity LSFR is port (
clk : in std_logic;
reset,en : in std_logic;
de1,de2 : out std_logic_vector(2 downto 0)
);
end LSFR;
architecture arch of LFSR is
signal etatpresent, etatfutur : std_logic_vector(16 downto 1);
signal s_xor1, s_xor2, s_xor3 : std_logic;
begin
-- Calcul intermediaire des ou exclusifs
s_xor1 <= etatpresent(15) xor etatpresent(1);
s_xor2 <= etatpresent(14) xor etatpresent(1);
s_xor3 <= etatpresent(12) xor etatpresent(1);
-- Calcul de l'état futur en fonction de l'état présent et des ou exclusifs
process(etatpresent) begin
etatfutur(16) <= etatpresent(1);
etatfutur(1) <= etatpresent(2);
etatfutur (2) <= etatpresent(3);
etatfutur (3) <= etatpresent(4);
etatfutur (4) <= etatpresent(5);
etatfutur (5) <= etatpresent(6);
etatfutur (6) <= etatpresent(7);
etatfutur (7) <= etatpresent(8);
etatfutur (8) <= etatpresent(9);
etatfutur (9) <= etatpresent(10);
etatfutur (10) <= etatpresent(11);
etatfutur (11) <= s_xor3;
s_xor3 <= etatpresent(12);
etatfutur (12) <= etatpresent(13);
etatfutur (13) <= s_xor2;
s_xor2 <= etatpresent(14);
etatfutur (14) <= s_xor1;
s_xor1 <= etatpresent(15);
etatfutur (15) <= etatpresent(16);
end process;
process(reset) begin
if (reset = '1' ) then
etatfutur <="0000000000000001";
end if ;
end process;
-- cablage des deux sorties
de1(2 downto 0) <= etatpresent(16 downto 14);
de2 (2 downto 0) <= etatpresent(3 downto 1);
end arch;
ieee库;
使用ieee.std_logic_1164.all;
使用IEEE.STD_LOGIC_ARITH.ALL;
使用IEEE.STD_LOGIC_UNSIGNED.ALL;
图书馆IEEE;
使用IEEE.STD_LOGIC_1164.ALL;
实体LSFR是端口(
clk:标准逻辑中;
重置,en:标准_逻辑中;
de1,de2:输出标准逻辑向量(2到0)
);
结束LSFR;
LFSR的建筑拱门是
信号etatpresent,etatfutur:std_逻辑_向量(16向下至1);
信号s_xor1、s_xor2、s_xor3:std_逻辑;
开始
--不包括中间值的计算
s_xor1您在实体中拼写LFSR错误。(“LSFR”)虽然您没有识别行号,而且行号不匹配,但第一个错误是,正如Martin Zobel所指出的,LFSR不是架构arch的声明实体。在实体声明及其end语句中,它似乎是拼错的实体名称
如果不借助互联网搜索来识别产生错误消息的VHDL工具(它似乎不太符合标准),Maria可能会在她的评论中发现一些东西,因为她已经识别了错误消息的来源
通常情况下,上下文子句中的重复库名称会被忽略,同一内部声明性区域中的已复制声明in use子句也会被忽略
理顺实体名称和上下文子句(通过删除多余的元素):
IEEE库;
使用IEEE.STD_LOGIC_1164.ALL;
实体LFSR为——was LSFR为端口(
港口(
clk:标准逻辑中;
重置,en:标准_逻辑中;
de1,de2:输出标准逻辑向量(2到0)
);
结束实体LFSR;--是结束LSFR;
LFSR的建筑拱门是——第16行,LFSR与LSFR不匹配
信号etatpresent,etatfutur:std_逻辑_向量(16向下至1);
信号s_xor1、s_xor2、s_xor3:std_逻辑;
开始
--不包括中间值的计算
您已经声明了两次库。很高兴仔细阅读错误消息。这只是LSFR/LFSR中的一个输入错误。
library IEEE;
use IEEE.STD_LOGIC_1164.ALL;
entity LFSR is -- was LSFR is port (
port (
clk: in std_logic;
reset, en: in std_logic;
de1, de2: out std_logic_vector(2 downto 0)
);
end entity LFSR; -- was end LSFR;
architecture arch of LFSR is -- Line 16, LFSR doesn't match LSFR
signal etatpresent, etatfutur: std_logic_vector(16 downto 1);
signal s_xor1, s_xor2, s_xor3: std_logic;
begin
-- Calcul intermediaire des ou exclusifs
s_xor1 <= etatpresent(15) xor etatpresent(1);
s_xor2 <= etatpresent(14) xor etatpresent(1);
s_xor3 <= etatpresent(12) xor etatpresent(1);
-- Calcul de l'état futur en fonction de l'état présent et des ou exclusifs
process (etatpresent)
begin
etatfutur(16) <= etatpresent(1);
etatfutur(1) <= etatpresent(2);
etatfutur (2) <= etatpresent(3);
etatfutur (3) <= etatpresent(4);
etatfutur (4) <= etatpresent(5);
etatfutur (5) <= etatpresent(6);
etatfutur (6) <= etatpresent(7);
etatfutur (7) <= etatpresent(8);
etatfutur (8) <= etatpresent(9);
etatfutur (9) <= etatpresent(10);
etatfutur (10) <= etatpresent(11);
etatfutur (11) <= s_xor3;
s_xor3 <= etatpresent(12);
etatfutur (12) <= etatpresent(13);
etatfutur (13) <= s_xor2;
s_xor2 <= etatpresent(14);
etatfutur (14) <= s_xor1;
s_xor1 <= etatpresent(15);
etatfutur (15) <= etatpresent(16);
end process;
process (reset, clk) -- added clock to sensitivity list
begin
if reset = '1' then
etatpresent <= "0000000000000001"; -- was etatfutur
elsif rising_edge(clk) and en = '1' then
etatpresent <= etatfutur;
end if;
end process;
-- cablage des deux sorties
de1(2 downto 0) <= etatpresent(16 downto 14);
de2 (2 downto 0) <= etatpresent(3 downto 1);
end architecture arch;
library ieee;
use ieee.std_logic_1164.all;
entity lfsr_tb is
end entity;
architecture fum of lfsr_tb is
signal clk: std_logic := '0';
signal reset: std_logic;
signal en: std_logic;
signal de1: std_logic_vector (2 downto 0);
signal de2: std_logic_vector (2 downto 0);
begin
DUT:
entity work.lfsr
port map (
clk => clk,
reset => reset,
en => en,
de1 => de1,
de2 => de2
);
CLOCK:
process
begin
wait for 10 ns;
clk <= not clk;
if now > 450 ns then
wait;
end if;
end process;
STIMULI:
process
begin
wait for 11 ns;
reset <= '1';
en <= '0';
wait for 20 ns;
reset <= '0';
wait for 20 ns;
en <= '1';
wait for 100 ns;
en <= '0';
wait for 40 ns;
en <= '1';
wait;
end process;
end architecture;
-- Calcul de l'état futur en fonction de l'état présent et des ou exclusifs
process (etatpresent, s_xor1, s_xor2, s_xor3)
begin
etatfutur(16) <= etatpresent(1);
etatfutur(1) <= etatpresent(2);
etatfutur (2) <= etatpresent(3);
etatfutur (3) <= etatpresent(4);
etatfutur (4) <= etatpresent(5);
etatfutur (5) <= etatpresent(6);
etatfutur (6) <= etatpresent(7);
etatfutur (7) <= etatpresent(8);
etatfutur (8) <= etatpresent(9);
etatfutur (9) <= etatpresent(10);
etatfutur (10) <= etatpresent(11);
etatfutur (11) <= s_xor3;
-- s_xor3 <= etatpresent(12);
etatfutur (12) <= etatpresent(13);
etatfutur (13) <= s_xor2;
-- s_xor2 <= etatpresent(14);
etatfutur (14) <= s_xor1;
-- s_xor1 <= etatpresent(15);
etatfutur (15) <= etatpresent(16);
end process;