VHDL在if语句中改变和保持信号
我是超级新的VHDL和我有一个指定的项目要做。基本上,我的目标是显示2个数字和减法,并在开关的帮助下添加它们。(在FPGA板上) 例如: 假设我有一个位值为9的信号a和位值为2的信号B,每当我打开开关时,它将操作a-B并显示7。问题是,当我关闭开关时,我得到的是9而不是7。(它不保存该值)我想要的是在打开和关闭同一个开关时显示所有的减法结果:9,7,5,3,1 到目前为止我所做的:VHDL在if语句中改变和保持信号,vhdl,fpga,Vhdl,Fpga,我是超级新的VHDL和我有一个指定的项目要做。基本上,我的目标是显示2个数字和减法,并在开关的帮助下添加它们。(在FPGA板上) 例如: 假设我有一个位值为9的信号a和位值为2的信号B,每当我打开开关时,它将操作a-B并显示7。问题是,当我关闭开关时,我得到的是9而不是7。(它不保存该值)我想要的是在打开和关闭同一个开关时显示所有的减法结果:9,7,5,3,1 到目前为止我所做的: 我为七段显示编码了一个解码器 我有一个5位的位片加法器-减法器实现 在我的主模块中,我将它们作为组件和实例化 在主
library IEEE;
use IEEE.STD_LOGIC_1164.ALL;
-- Uncomment the following library declaration if using
-- arithmetic functions with Signed or Unsigned values
--use IEEE.NUMERIC_STD.ALL;
-- Uncomment the following library declaration if instantiating
-- any Xilinx primitives in this code.
--library UNISIM;
--use UNISIM.VComponents.all;
entity main is
Port (
S : in STD_LOGIC_VECTOR (1 downto 0);
Cin : in STD_LOGIC;
Cout: out STD_LOGIC;
StartGameSwitch : IN std_logic;
SevenSegControl : OUT std_logic_vector(7 downto 0):=x"ff";
SevenSegBus : OUT std_logic_vector(7 downto 0);
clk : IN std_logic);
end main;
architecture Behavioral of main is
--COMPONENTS-------------------------------------------------------------------------------------------------------
COMPONENT sevenSegment
PORT(
A : IN std_logic_vector(4 downto 0);
B : IN std_logic_vector(4 downto 0);
C : IN std_logic_vector(4 downto 0);
D : IN std_logic_vector(4 downto 0);
E : IN std_logic_vector(4 downto 0);
F : IN std_logic_vector(4 downto 0);
G : IN std_logic_vector(4 downto 0);
H : IN std_logic_vector(4 downto 0);
SevenSegControl : OUT std_logic_vector(7 downto 0);
SevenSegBus : OUT std_logic_vector(7 downto 0);
clk : IN std_logic
);
END COMPONENT;
COMPONENT logic
PORT(
A : IN std_logic;
B : IN std_logic;
COld : IN std_logic;
S : IN std_logic_vector(1 downto 0);
AG : IN std_logic;
BG : IN std_logic;
CNew : OUT std_logic;
NumberBit : OUT std_logic;
negativeSign : OUT std_logic
);
END COMPONENT;
COMPONENT comparator
PORT(
A : IN std_logic_vector(4 downto 0);
B : IN std_logic_vector(4 downto 0);
AG : OUT std_logic;
BG : OUT std_logic
);
END COMPONENT;
--SIGNALS-------------------------------------------------------------------------------------------------------
signal sA,sB,sC,sD,sE,sF,sG,sH: std_logic_vector (4 downto 0) ;
signal logicLed,result,negativeSign,sevenSegmentResult,sevenSegmentNegativeSign: std_logic_vector (4 downto 0);
signal c0,c1,c2,c3,c4: std_logic;
signal AG,BG: std_logic;
signal HP1,HP2,ATK1,ATK2: std_logic_vector (4 downto 0);
--CONSTANTS-------------------------------------------------------------------------------------------------------
constant charO:std_logic_vector(4 downto 0):= "01010"; --10
constant charP:std_logic_vector(4 downto 0):= "01011"; --11
constant charE:std_logic_vector(4 downto 0):= "01100"; --12
constant charN:std_logic_vector(4 downto 0):= "01101"; --13
constant charF:std_logic_vector(4 downto 0):= "01110"; --14
constant charI:std_logic_vector(4 downto 0):= "01111"; --15
constant charG:std_logic_vector(4 downto 0):= "10000"; --16
constant charH:std_logic_vector(4 downto 0):= "10001"; --17
constant charT:std_logic_vector(4 downto 0):= "10010"; --18
constant charA: std_logic_vector(4 downto 0):= "10011";--19
constant char0:std_logic_vector(4 downto 0):= "00000";
constant char1:std_logic_vector(4 downto 0):= "00001";
constant char2:std_logic_vector(4 downto 0):= "00010";
constant char3:std_logic_vector(4 downto 0):= "00011";
constant char4:std_logic_vector(4 downto 0):= "00100";
constant char5:std_logic_vector(4 downto 0):= "00101";
constant char6:std_logic_vector(4 downto 0):= "00110";
constant char7:std_logic_vector(4 downto 0):= "00111";
constant char8:std_logic_vector(4 downto 0):= "01000";
constant char9:std_logic_vector(4 downto 0):= "01001";
constant charEmpty:std_logic_vector(4 downto 0):= "11111";
begin
--INSTANTIATIONS-------------------------------------------------------------------------------------------------------
Inst_logic1: logic PORT MAP(
A =>HP2(0) ,
B =>ATK1(0) ,
COld =>c0 ,
CNew =>c1,
NumberBit =>result(0) ,
S =>S,
AG => AG,
BG => BG,
negativeSign => negativeSign(0)
);
Inst_logic2: logic PORT MAP(
A =>HP2(1) ,
B =>ATK1(1) ,
COld =>c1 ,
CNew =>c2,
NumberBit =>result(1) ,
S =>S,
AG => AG,
BG => BG,
negativeSign => negativeSign(1)
);
Inst_logic3: logic PORT MAP(
A =>HP2(2) ,
B =>ATK1(2) ,
COld =>c2 ,
CNew =>c3,
NumberBit =>result(2) ,
S =>S,
AG => AG,
BG => BG,
negativeSign => negativeSign(2)
);
Inst_logic4: logic PORT MAP(
A =>HP2(3) ,
B =>ATK1(3) ,
COld =>c3 ,
CNew =>c4,
NumberBit =>result(3) ,
S =>S,
AG => AG,
BG => BG,
negativeSign => negativeSign(3)
);
Inst_logic5: logic PORT MAP(
A =>HP2(4) ,
B =>ATK1(4) ,
COld =>c4 ,
CNew =>Cout,
NumberBit =>result(4) ,
S =>S,
AG => AG,
BG => BG,
negativeSign => negativeSign(4)
);
Inst_comparator: comparator PORT MAP(
A => HP2,
B => ATK1,
AG => AG,
BG => BG
);
--GAME LOGIC-------------------------------------------------------------------------------------------------------
process(StartGameSwitch)
begin
--DEFAULT VALUES FOR HP1,HP2,ATK1,ATK2--
-- I WANT HP1 AND HP2 TO CHANGE ACCORDING TO SWITCHES --
HP2 <= char9;
ATK1 <= char2;
HP1 <= char9;
ATK2 <= char3;
if(StartGameSwitch = '0') then -- OPEN P35 ON FPGA
sA <= charO; -- s_ are the signals for the seven segment
sB <= charP;
sC <= charE;
sD <= charN;
sE <= charEmpty;
sF <= charP;
sG <= char7;
sH <= char8;
else -- WHEN P35 IS OPENED ( WHEN THE GAME STARTS)
sA <= HP1; --HP POINT FOR P1
sB <= charEmpty;
sC <= ATK1; --Attack POINT FOR P1
sD <= charEmpty;
sE <= charEmpty;
sF <= ATK2; --Attack POINT FOR P2
sG <= charEmpty;
sH <= HP2; --HP POINT FOR P2
if(S = "01") then -- WHEN PLAYER 1 ATTACKS PLAYER 2 ( HP2 - ATK1 = RESULT (i.e 9-2 = 7))
HP2 <= result;
sH <= HP2; -- When SWITCH IS OPEN, IT SHOWS 7 WITHOUT ANY PROBLEM
end if;
-- HOWEVER, WHEN THE SWITCH IS AGAIN BACK TO 00, sH displays 9 instead of 7, HOW CAN I SAVE THE VALUE OF HP2?
end if;
end process;
-- SIGNALS ASSIGNED TO DISPLAY
Inst_sevenSegment: sevenSegment PORT MAP(
A =>sA, --1ST PLAYER HEALTH
B =>sB, -- 1ST PLAYER DMG
C =>sC ,
D =>sD ,
E =>sE ,
F =>sF ,
G =>sG , -- 2ND PLAYER DMG
H =>sH , --2ND PLAYER HEALTH
SevenSegControl =>SevenSegControl ,
clk => clk,
SevenSegBus => SevenSegBus
);
end Behavioral;
IEEE库;
使用IEEE.STD_LOGIC_1164.ALL;
--如果使用,请取消注释以下库声明
--具有有符号或无符号值的算术函数
--使用IEEE.NUMERIC_STD.ALL;
--如果正在实例化,请取消对以下库声明的注释
--此代码中的任何Xilinx原语。
--UNISIM图书馆;
--使用UNISIM.VComponents.all;
实体主体是
港口(
S:标准逻辑向量(1到0);
Cin:标准逻辑;
Cout:输出标准逻辑;
STARTGAMESSWITCH:标准逻辑中;
七级控制:输出标准逻辑向量(7到0):=x“ff”;
SevenSegBus:OUT标准逻辑向量(7到0);
时钟:在标准逻辑中);
端干管;
主要信息系统的架构
--组成部分-------------------------------------------------------------------------------------------------------
成分七聚
港口(
A:标准逻辑向量(4到0);
B:标准逻辑向量(4到0);
C:标准逻辑向量(4到0);
D:标准逻辑向量(4到0);
E:标准逻辑向量(4到0);
F:标准逻辑向量(4到0);
G:标准逻辑向量(4到0);
H:标准逻辑向量(4到0);
七级控制:输出标准逻辑向量(7到0);
SevenSegBus:OUT标准逻辑向量(7到0);
时钟:在标准逻辑中
);
端部元件;
组件逻辑
港口(
答:标准逻辑;
B:标准逻辑;
冷:在标准逻辑中;
S:标准逻辑向量(1到0);
AG:IN-std_逻辑;
BG:标准逻辑中;
CNew:输出标准逻辑;
NumberBit:输出标准逻辑;
否定设计:输出标准逻辑
);
端部元件;
分量比较器
港口(
A:标准逻辑向量(4到0);
B:标准逻辑向量(4到0);
AG:输出标准逻辑;
BG:输出标准逻辑
);
端部元件;
--信号-------------------------------------------------------------------------------------------------------
信号sA、sB、sC、sD、sE、sF、sG、sH:std_逻辑_向量(4到0);
信号逻辑LED、结果、否定设计、七段结果、七段否定设计:标准逻辑向量(4到0);
信号c0、c1、c2、c3、c4:std_逻辑;
信号AG、BG:std_逻辑;
信号HP1、HP2、ATK1、ATK2:std_逻辑_向量(4到0);
--常数-------------------------------------------------------------------------------------------------------
常数charO:std_逻辑_向量(4到0):=“01010”--10
常量字符:标准逻辑向量(4到0):=“01011”--11
常量字符:标准逻辑向量(4到0):=“01100”--12
常量字符:标准逻辑向量(4到0):=“01101”--13
常量字符:标准逻辑向量(4到0):=“01110”--14
常数charI:std_逻辑_向量(4到0):=“01111”--15
常量字符:标准逻辑向量(4到0):=“10000”--16
常量字符:标准逻辑向量(4到0):=“10001”--17
常数图:标准逻辑向量(4到0):=“10010”--18
常数字符:标准逻辑向量(4到0):=“10011”--19
常数char0:std_逻辑_向量(4到0):=“00000”;
常数char1:std_逻辑_向量(4到0):=“00001”;
常数char2:std_逻辑_向量(4到0):=“00010”;
常数char3:std_逻辑_向量(4到0):=“00011”;
常数char4:std_逻辑_向量(4到0):=“00100”;
常数char5:std_逻辑_向量(4到0):=“00101”;
常数char6:std_逻辑_向量(4到0):=“00110”;
常数char7:std_逻辑_向量(4到0):=“00111”;
常数char8:std_逻辑_向量(4到0):=“01000”;
常数char9:std_逻辑_向量(4到0):=“01001”;
常数charEmpty:std_逻辑_向量(4到0):=“11111”;
开始
--实例-------------------------------------------------------------------------------------------------------
Inst_logic1:逻辑端口映射(
A=>HP2(0),
B=>ATK1(0),
冷=>c0,
CNew=>c1,
NumberBit=>结果(0),
S=>S,
AG=>AG,
BG=>BG,
negativeSign=>negativeSign(0)
);
Inst_logic2:逻辑端口映射(
A=>HP2(1),
B=>ATK1(1),
冷=>c1,
CNew=>c2,
NumberBit=>结果(1),
S=>S,
AG=>AG,
BG=>BG,
negativeSign=>negativeSign(1)
);
Inst_logic3:逻辑端口映射(
A=>HP2(2),
B=>ATK1(2),
冷=>c2,
CNew=>c3,
NumberBit=>结果(2),
S=>S,
AG=>AG,
BG=>BG,
negativeSign=>negativeSign(2)
);
仪器逻辑4:逻辑端口M
process(StartGameSwitch,S)
begin
--DEFAULT VALUES FOR HP1,HP2,ATK1,ATK2--
-- I WANT HP1 AND HP2 TO CHANGE ACCORDING TO SWITCHES --
--HP2 <= char9;
--ATK1 <= char2;
--HP1 <= char9;
--ATK2 <= char3;
if(StartGameSwitch = '0') then -- OPEN P35 ON FPGA
HP2 <= char9; --Assign default values here instead
ATK1 <= char2;
HP1 <= char9;
ATK2 <= char3;
sA <= charO; -- s_ are the signals for the seven segment
sB <= charP;
sC <= charE;
sD <= charN;
sE <= charEmpty;
sF <= charP;
sG <= char7;
sH <= char8;
else -- WHEN P35 IS OPENED ( WHEN THE GAME STARTS)