我正在做一个自动售货机项目，我唯一的问题是Seg的端口映射，我收到此错误：
警告：COMP96_0411： reu.vhd：（363,31）：模式'out'的实际情况无法分配到'in'模式的正式“x”。
错误：COMP96_0100： reu.vhd：（363,36）：端口映射中的实际参数类型与正式端口“display”的类型不匹配。
在四个地方。
设计的最高层：
library IEEE;
use IEEE.STD_LOGIC_1164.ALL;
use IEEE.STD_LOGIC_ARITH.ALL;
use IEEE.STD_LOGIC_UNSIGNED.ALL;
entity cafe_pf is Port (
inicio: in std_logic;
rst: in std_logic;
ck: in std_logic;
Unp: in std_logic;
DoP: in std_logic;
Ci5: in std_logic;
DiP: in std_logic;
Sie1: out std_logic_vector(3 downto 0);
Sie2: out std_logic_vector(3 downto 0);
Sie3: out std_logic_vector(3 downto 0) ;
Sie4: out std_logic_vector(3 downto 0)
);
end cafe_pf;
architecture behavioral of cafe_pf is
type nombres_estados is (Q0, Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8,Q9, Q10, Q11, Q12, Q13, Q14,Q15,Q16, Q17, Q18);
signal estado: nombres_estados;
signal entrada_aux: std_logic_vector (3 downto 0);
component clk200Hz Port (
clk_in : in STD_LOGIC;
reset : in STD_LOGIC;
clk_out: out STD_LOGIC
);
end component;
component conta1 port(
x: std_logic;
clk: in std_logic;
rst: std_logic;
y: out std_logic);
end component;
component Seg7 port(
x : in std_logic_vector(3 downto 0);
display : out std_logic_vector(6 downto 0)
);
end component;
signal ck2: std_logic;
signal Unp1: std_logic;
signal DoP2: std_logic;
signal Ci52: std_logic;
signal DiP2: std_logic;
signal Sie11: std_logic;
signal Sie21: std_logic;
signal Sie31: std_logic;
signal Sie41: std_logic;
begin
cl: clk200hz port map(ck,rst,ck2);
pulso_unpeso: conta1 port map(Unp,ck2,rst,Unp1) ;
pulso_dospesos: conta1 port map(DoP,ck,rst,DoP2) ;
pulso_cincopesos: conta1 port map(Ci5,ck,rst,Ci52) ;
pulso_Diezpesos: conta1 port map(Dip,ck,rst,DiP2) ;
entrada_aux<=DiP2&Ci52&DoP2&Unp1;
process(inicio, ck2)
begin
if rst='1' and ck2'event then
estado<=Q0;
end if;
if inicio='1' then
estado<=Q0;
elsif ck2='1' and ck2'event then
case estado is
when Q0 =>
case entrada_aux is
when "0000" => estado<=Q0;
when "0001" => estado<=Q1;
when "0010" => estado<=Q2;
when "0100" => estado<=Q5;
when "1000" => estado<=Q10;
when others => estado<=Q0;
end case;
when Q1 =>
case entrada_aux is
when "0000" => estado<=Q1;
when "0001" => estado<=Q2;
when "0010" => estado<=Q3;
when "0100" => estado<=Q6;
when "1000" => estado<=Q11;
when others => estado<=Q0;
end case;
when Q2 =>
case entrada_aux is
when "0000" => estado<=Q2;
when "0001" => estado<=Q3;
when "0010" => estado<=Q4;
when "0101" => estado<=Q7;
when "1010" => estado<=Q12;
when others => estado<=Q0;
end case;
when Q3 =>
case entrada_aux is
when "0000" => estado<=Q3;
when "0001" => estado<=Q4;
when "0010" => estado<=Q5;
when "0101" => estado<=Q8;
when "1010" => estado<=Q13;
when others => estado<=Q0;
end case;
when Q4 =>
case entrada_aux is
when "0000" => estado<=Q4;
when "0001" => estado<=Q5;
when "0010" => estado<=Q6;
when "0100" => estado<=Q9;
when "1000" => estado<=Q14;
when others => estado<=Q0;
end case;
when Q5 =>
case entrada_aux is
when "0000" => estado<=Q5;
when "0001" => estado<=Q6;
when "0010" => estado<=Q7;
when "0100" => estado<=Q10;
when "1000" => estado<=Q15;
when others => estado<=Q0;
end case;
when Q6 =>
case entrada_aux is
when "0000" => estado<=Q6;
when "0001" => estado<=Q7;
when "0010" => estado<=Q8;
when "0100" => estado<=Q11;
when "1000" => estado<=Q16;
when others => estado<=Q0;
end case;
when Q7 =>
case entrada_aux is
when "0000" => estado<=Q7;
when "0001" => estado<=Q8;
when "0010" => estado<=Q9;
when "0100" => estado<=Q12;
when "1000" => estado<=Q17;
when others => estado<=Q0;
end case;
when Q8 =>
case entrada_aux is
when "0000" => estado<=Q8;
when "0001" => estado<=Q9;
when "0010" => estado<=Q10;
when "0100" => estado<=Q13;
when "1000" => estado<=Q18;
when others => estado<=Q0;
end case;
when Q9 =>
case entrada_aux is
when "0000" => estado<=Q0;
when "0001" => estado<=Q1;
when "0010" => estado<=Q2;
when "0100" => estado<=Q5;
when "1000" => estado<=Q10;
when others => estado<=Q0;
end case;
when Q10 =>
case entrada_aux is
when "0000" => estado<=Q0;
when "0001" => estado<=Q1;
when "0010" => estado<=Q2;
when "0100" => estado<=Q5;
when "1000" => estado<=Q10;
when others => estado<=Q0;
end case;
when Q11 =>
case entrada_aux is
when "0000" => estado<=Q0;
when "0001" => estado<=Q1;
when "0010" => estado<=Q2;
when "0100" => estado<=Q5;
when "1000" => estado<=Q10;
when others => estado<=Q0;
end case;
when Q12 =>
case entrada_aux is
when "0000" => estado<=Q0;
when "0001" => estado<=Q1;
when "0010" => estado<=Q2;
when "0100" => estado<=Q5;
when "1000" => estado<=Q10;
when others => estado<=Q0;
end case;
when Q13 =>
case entrada_aux is
when "0000" => estado<=Q0;
when "0001" => estado<=Q1;
when "0010" => estado<=Q2;
when "0100" => estado<=Q5;
when "1000" => estado<=Q10;
when others => estado<=Q0;
end case;
when Q14 =>
case entrada_aux is
when "0000" => estado<=Q0;
when "0001" => estado<=Q1;
when "0010" => estado<=Q2;
when "0100" => estado<=Q5;
when "1000" => estado<=Q10;
when others => estado<=Q0;
end case;
when Q15 =>
case entrada_aux is
when "0000" => estado<=Q0;
when "0001" => estado<=Q1;
when "0010" => estado<=Q2;
when "0100" => estado<=Q5;
when "1000" => estado<=Q10;
when others => estado<=Q0;
end case;
when Q16 =>
case entrada_aux is
when "0000" => estado<=Q0;
when "0001" => estado<=Q1;
when "0010" => estado<=Q2;
when "0100" => estado<=Q5;
when "1000" => estado<=Q10;
when others => estado<=Q0;
end case;
when Q17 =>
case entrada_aux is
when "0000" => estado<=Q0;
when "0001" => estado<=Q1;
when "0010" => estado<=Q2;
when "0100" => estado<=Q5;
when "1000" => estado<=Q10;
when others => estado<=Q0;
end case;
when Q18 =>
case entrada_aux is
when "0000" => estado<=Q0;
when "0001" => estado<=Q1;
when "0010" => estado<=Q2;
when "0100" => estado<=Q5;
when "1000" => estado<=Q10;
when others => estado<=Q0;
end case;
when others => estado<=Q0;
end case;
end if;
end process;
process(estado)
begin
case estado is
when Q0 =>
Sie1<="0000";
Sie2<="0000";
Sie3<="0000";
Sie4<="0000";
when Q1 =>
Sie1<="0000";
Sie2<="0001";
Sie3<="0000";
Sie4<="0000";
when Q2 =>
Sie1<="0000";
Sie2<="0010";
Sie3<="0000";
Sie4<="0000";
when Q3 =>
Sie1<="0000";
Sie2<="0011";
Sie3<="0000";
Sie4<="0000";
when Q4 =>
Sie1<="0000";
Sie2<="0100";
Sie3<="0000";
Sie4<="0000";
when Q5 =>
Sie1<="0000";
Sie2<="0101";
Sie3<="0000";
Sie4<="0000";
when Q6 =>
Sie1<="0000";
Sie2<="0110";
Sie3<="0000";
Sie4<="0000";
when Q7 =>
Sie1<="0000";
Sie2<="0111";
Sie3<="0000";
Sie4<="0000";
when Q8 =>
Sie1<="0000";
Sie2<="1000";
Sie3<="0000";
Sie4<="0000";
when Q9 =>
Sie1<="0000";
Sie2<="1001";
Sie3<="0001";
Sie4<="0000";
when Q10 =>
Sie1<="0001";
Sie2<="0000";
Sie3<="0001";
Sie4<="0001";
when Q11 =>
Sie1<="0001";
Sie2<="0001";
Sie3<="0001";
Sie4<="0010";
when Q12 =>
Sie1<="0001" ;
Sie2<="0010";
Sie3<="0001";
Sie4<="0011";
when Q13 =>
Sie1<="0001" ;
Sie2<="0011";
Sie3<="0001";
Sie4<="0100";
when Q14 =>
Sie1<="0001";
Sie2<="0100";
Sie3<="0001";
Sie4<="0101";
when Q15 =>
Sie1<="0001";
Sie2<="0101";
Sie3<="0001";
Sie4<="0110";
when Q16 =>
Sie1<="0001";
Sie2<="0110";
Sie3<="0001";
Sie4<="0111";
when Q17 =>
Sie1<="0001";
Sie2<="0111";
Sie3<="0001";
Sie4<="1000";
when Q18 =>
Sie1<="0001";
Sie2<="1000";
Sie3<="0001";
Sie4<="1001";
end case;
end process;
display_1: seg7 port map(Sie1,Sie11); ------ERROR HERE
display_2: seg7 port map(Sie2,Sie21); ------ERROR HERE
display_3: seg7 port map(Sie3,Sie31); ------ERROR HERE
display_4: seg7 port map(Sie4,Sie41); ------ERROR HERE
end behavioral;
在每个州Idisplay Sie1,2,3,4的数据，但我在端口地图行中得到了这个错误。
这是Seg7计划：
library IEEE;
use ieee.std_logic_1164.all;
entity Seg7 is port(
x : in std_logic_vector(3 downto 0);
display : out std_logic_vector(0 to 6)
);
end Seg7;
architecture SIMPLE1 of Seg7 is
signal display0:std_logic_vector(0 to 6);
begin
bcd_7seg: process(x)
begin
case x is
when "0000" => display0 <= "1111110";
when "0001" => display0 <= "0110000";
when "0010" => display0 <= "1101101";
when "0011" => display0 <= "1111001";
when "0100" => display0 <= "0110011";
when "0101" => display0 <= "1011011";
when "0110" => display0 <= "1011111";
when "0111" => display0 <= "1110000";
when "1000" => display0 <= "1111110";
when "1001" => display0 <= "1110011";
when "1010" => display0 <= "1110111";
when "1011" => display0 <= "0011111";
when "1100" => display0 <= "1001110";
when "1101" => display0 <= "0111101";
when "1110" => display0 <= "1001111";
when others => display0 <= "1000111";
end case;
display<=not display0;
end process;
end SIMPLE1;
seg7是7段显示的程序，我真的不知道做错了什么。
更新。 13/2/2015 我添加建议的行并修复向量，这些错误消失了， 但现在我得到4个新错误。
Error: ELAB1_0008: reu.vhd : (370, 15): Cannot read output : "Sie1".
Error: ELAB1_0008: reu.vhd : (371, 16): Cannot read output : "Sie2".
Error: ELAB1_0008: reu.vhd : (372, 16): Cannot read output : "Sie3".
Error: ELAB1_0008: reu.vhd : (373, 16): Cannot read output : "Sie4".
新代码： 设计的最高级别（之前也是如此，我只是添加了这个）：
signal Sie1_i: std_logic_vector(3 downto 0);
signal Sie1_i1: std_logic_vector(3 downto 0);
signal Sie1_i2: std_logic_vector(3 downto 0);
signal Sie1_i3: std_logic_vector(3 downto 0);
.
.
.
when Q18 =>
Sie1<="0001";
Sie2<="1000";
Sie3<="0001";
Sie4<="1001";
end case;
end process;
Sie1_i <= Sie1;-------- ERROR HERE
Sie1_i1 <= Sie2; -------- ERROR HERE
Sie1_i2 <= Sie3; -------- ERROR HERE
Sie1_i3 <= Sie4; -------- ERROR HERE
display_1: seg7 port map(Sie1_i, Sie11);
display_2: seg7 port map(Sie1_i1,Sie21);
display_3: seg7 port map(Sie1_i2,Sie31);
display_4: seg7 port map(Sie1_i3,Sie41);
end behavioral;
答案 0 :(得分：0)
display_1: seg7 port map(Sie1,Sie11); ------ERROR HERE
Sie1是您实体的输出。您无法从输出中读取。为了解决这个问题，通常你会做类似的事情：
Sie1_i <= Sie1;
display_1: seg7 port map(Sie1_i, Sie11);
并将您之前的代码分配给Sie1_i。