Vhdl 在de1板的状态机中增加七段显示
我正在使用状态机创建一个倒计时计时器，在启动时显示00:00，当按下键1时，您可以通过将分钟增加/减少1来输入时间，如果按住“向上/向下”按钮5个周期，它将向上/向下增加5。多亏了一些很棒的帮助@DavidKoontz，我已经完成了代码。我的代码b/c中的按钮不需要去抖动，我的altera板似乎很好地接收到了低信号。因为我只使用了一个时钟，按钮反应缓慢b/c，时钟设置为1HzVhdl 在de1板的状态机中增加七段显示,vhdl,state-machine,seven-segment-display,Vhdl,State Machine,Seven Segment Display,我正在使用状态机创建一个倒计时计时器，在启动时显示00:00，当按下键1时，您可以通过将分钟增加/减少1来输入时间，如果按住“向上/向下”按钮5个周期，它将向上/向下增加5。多亏了一些很棒的帮助@DavidKoontz，我已经完成了代码。我的代码b/c中的按钮不需要去抖动，我的altera板似乎很好地接收到了低信号。因为我只使用了一个时钟，按钮反应缓慢b/c，时钟设置为1Hz Library ieee; USE ieee.std_logic_1164.ALL; ENTITY CountDownT
Library ieee;
USE ieee.std_logic_1164.ALL;
ENTITY CountDownTimer IS
PORT(
CLK,RESET: IN STD_LOGIC;
a1, b1, c1, d1, e1, f1, g1 : OUT STD_LOGIC;
a2, b2, c2, d2, e2, f2, g2 : OUT STD_LOGIC;
a3, b3, c3, d3, e3, f3, g3 : OUT STD_LOGIC;
a4, b4, c4, d4, e4, f4, g4 : OUT STD_LOGIC;
--All 4 buttons for timer
BUTTON0, BUTTON1, BUTTON2, BUTTON3: IN STD_LOGIC;
--LEDR9
ON_OFF_LED: OUT BIT;
--LEDR9-R6
INPUT_LED1, INPUT_LED2, INPUT_LED3, INPUT_LED4: OUT BIT;
--LEDR0
DONE_LED: OUT BIT);
END CountdownTimer;
ARCHITECTURE Counter OF CountDownTimer IS
--Define state machine
TYPE STATE_TYPE IS (A_ON_OFF, B_INPUT, C_COUNTDOWN, D_DONE);
SIGNAL State : STATE_TYPE;
--Buttons produce 0 when pressed, signal for 1 when pressed
SIGNAL B3D0, B3D1, B3D2, B3D3: STD_LOGIC := '0';
SIGNAL B2D0, B2D1, B2D2, B2D3: STD_LOGIC := '0';
SIGNAL CLOCK: STD_LOGIC := '0';
SIGNAL Count: INTEGER:= 1;
--SIGNAL for range of integer values
SIGNAL Minute1 : INTEGER RANGE 0 TO 6;
SIGNAL Minute2 : INTEGER RANGE 0 TO 9;
SIGNAL Second1 : INTEGER RANGE 0 TO 5;
SIGNAL Second2 : INTEGER RANGE 0 TO 9;
--Output for the seven segment displays
SIGNAL OUTPUT_HEX0 : STD_LOGIC_VECTOR(6 DOWNTO 0);
SIGNAL OUTPUT_HEX1 : STD_LOGIC_VECTOR (6 DOWNTO 0);
SIGNAL OUTPUT_HEX2 : STD_LOGIC_VECTOR (6 DOWNTO 0);
SIGNAL OUTPUT_HEX3 : STD_LOGIC_VECTOR (6 DOWNTO 0);
SIGNAL B3_HOLD: STD_LOGIC := '0'; --Gets 1 if button3 was held
SIGNAL B2_HOLD: STD_LOGIC := '0'; --Gets 1 is button2 was held
BEGIN
--Segment 1 display pins
a1 <= OUTPUT_HEX0(6);
b1 <= OUTPUT_HEX0(5);
c1 <= OUTPUT_HEX0(4);
d1 <= OUTPUT_HEX0(3);
e1 <= OUTPUT_HEX0(2);
f1 <= OUTPUT_HEX0(1);
g1 <= OUTPUT_HEX0(0);
--Segment 2 display pins
a2 <= OUTPUT_HEX1(6);
b2 <= OUTPUT_HEX1(5);
c2 <= OUTPUT_HEX1(4);
d2 <= OUTPUT_HEX1(3);
e2 <= OUTPUT_HEX1(2);
f2 <= OUTPUT_HEX1(1);
g2 <= OUTPUT_HEX1(0);
--Segment 3 display pins
a3 <= OUTPUT_HEX2(6);
b3 <= OUTPUT_HEX2(5);
c3 <= OUTPUT_HEX2(4);
d3 <= OUTPUT_HEX2(3);
e3 <= OUTPUT_HEX2(2);
f3 <= OUTPUT_HEX2(1);
g3 <= OUTPUT_HEX2(0);
--Segment 4 display pins
a4 <= OUTPUT_HEX3(6);
b4 <= OUTPUT_HEX3(5);
c4 <= OUTPUT_HEX3(4);
d4 <= OUTPUT_HEX3(3);
e4 <= OUTPUT_HEX3(2);
f4 <= OUTPUT_HEX3(1);
g4 <= OUTPUT_HEX3(0);
WITH Second2 SELECT
--One's second place, 0 to 9
OUTPUT_HEX0 <= "0000001" WHEN 0,
"1001111" WHEN 1,
"0010010" WHEN 2,
"0000110" WHEN 3,
"1001100" WHEN 4,
"0100100" WHEN 5,
"0100000" WHEN 6,
"0001101" WHEN 7,
"0000000" WHEN 8,
"0001100" WHEN 9,
"0000001" WHEN OTHERS;
WITH Second1 SELECT
--Tens second place, 0 to 5
OUTPUT_HEX1 <= "0000001" WHEN 0,
"1001111" WHEN 1,
"0010010" WHEN 2,
"0000110" WHEN 3,
"1001100" WHEN 4,
"0100100" WHEN 5,
"0000001" WHEN OTHERS;
WITH Minute2 SELECT
--Ones minute place, 0 to 9
OUTPUT_HEX2 <= "0000001" WHEN 0,
"1001111" WHEN 1,
"0010010" WHEN 2,
"0000110" WHEN 3,
"1001100" WHEN 4,
"0100100" WHEN 5,
"0100000" WHEN 6,
"0001101" WHEN 7,
"0000000" WHEN 8,
"0001100" WHEN 9,
"0000001" WHEN OTHERS;
WITH Minute1 SELECT
--Tens minute place, 0 to 6
OUTPUT_HEX3 <= "0000001" WHEN 0,
"1001111" WHEN 1,
"0010010" WHEN 2,
"0000110" WHEN 3,
"1001100" WHEN 4,
"0100100" WHEN 5,
"0100000" WHEN 6,
"0000001" WHEN OTHERS;
PROCESS(CLK)
BEGIN
IF RISING_EDGE(CLK) THEN
Count <= Count + 1;
IF (Count = 30000000) THEN
CLOCK <= NOT(CLOCK);
Count <= 1;
END IF;
END IF;
END PROCESS;
PROCESS(CLOCK)
BEGIN
IF RISING_EDGE(CLOCK) THEN
B3D0 <= BUTTON3;
B3D1 <= NOT B3D0;
B3D2 <= B3D1;
B3D3 <= B3D2;
B2D0 <= BUTTON2;
B2D1 <= NOT B2D0;
B2D2 <= B2D1;
B2D3 <= B2D2;
B3_HOLD <= B3D1 AND B3D2 AND B3D3;
B2_HOLD <= B2D1 AND B2D2 AND B2D3;
END IF;
END PROCESS;
PROCESS(CLOCK)
BEGIN
IF RESET = '1' THEN --Async Reset
State <= A_ON_OFF;
ELSIF RISING_EDGE(CLOCK) THEN
CASE State IS
---------------------------------A_ON_OFF---------------------------------
WHEN A_ON_OFF =>
--Red LED9
ON_OFF_LED <= '1';
Minute1 <= 0;
Minute2 <= 0;
Second1 <= 0;
Second2 <= 0;
IF (BUTTON0 = '0') THEN
ON_OFF_LED <= '0';
State <= B_INPUT;
END IF;
---------------------------------B_INPUT/PAUSE---------------------------------
WHEN B_INPUT =>
--Light up LEDs
INPUT_LED1 <= '1';
INPUT_LED2 <= '1';
INPUT_LED3 <= '1';
INPUT_LED4 <= '1';
IF (Minute1 = 6) THEN
Minute2 <= 0;
Second1 <= 0;
Second2<= 0;
State <= B_INPUT;
END IF;
--Count up button
IF (BUTTON3 = '0' AND B3_HOLD = '0') THEN
IF (Minute1 = 6 AND Minute2 >= 0) THEN
Minute1 <= 0;
Minute2 <= 1;
Second1 <= 0;
Second2 <= 0;
State <= B_INPUT;
ELSIF (Minute2 < 9) THEN
Minute2 <= (Minute2 + 1);
State <= B_INPUT;
ELSIF (Minute2 = 9) THEN
Minute1 <= (Minute1 + 1);
Minute2 <= 0;
State <= B_INPUT;
END IF;
END IF;
IF (BUTTON3 = '0' AND B3_HOLD = '1') THEN
IF (Minute1 = 6 AND Minute2 >= 0) THEN
Minute1 <= 0;
Minute2 <= 5;
Second1 <= 0;
Second2 <= 0;
State <= B_INPUT;
ELSIF (Minute2 < 5) THEN
IF (Minute2 = 0) THEN
Minute2 <= (Minute2 + 5);
State <= B_INPUT;
ELSE
Minute2 <= (Minute2 + 1);
State <= B_INPUT;
END IF;
ELSIF (Minute2 = 5) THEN
Minute2 <= 0;
Minute1 <= (Minute1 + 1);
State <= B_INPUT;
ELSIF (Minute2 > 5) THEN
IF (Minute2 = 9) THEN
Minute2 <= 0;
Minute1 <= (Minute1 + 1);
State <= B_INPUT;
ELSE
Minute2 <= (Minute2 + 1);
State <= B_INPUT;
END IF;
END IF;
END IF;
--Count down button
IF (BUTTON2 = '0' AND B2_HOLD = '0') THEN
IF ((Minute1 = 0) AND (Minute2 = 0)) THEN
Minute1 <= 6;
Minute2 <= 0;
Second1 <= 0;
Second2 <= 0;
ELSIF (Minute2 = 0) THEN
Minute2 <= 9;
Minute1 <= (Minute1 - 1);
ELSE
Minute2 <= (Minute2 - 1);
END IF;
State <= B_INPUT;
END IF;
IF (BUTTON2 = '0' AND B2_HOLD = '1') THEN
IF (Minute1 = 0 AND Minute2 = 0) THEN
Minute1 <= 6;
Minute2 <= 0;
Second1 <= 0;
Second2 <= 0;
State <= B_INPUT;
ELSIF (Minute2 = 0 AND Minute1 > 0) THEN
Minute1 <= (Minute1 - 1);
Minute2 <= 5;
State <= B_INPUT;
ELSIF (Minute2 < 5) THEN
IF (Minute2 = 0) THEN
Minute1 <= (Minute1 - 1);
Minute2 <= 5;
State <= B_INPUT;
ELSE
Minute2 <= (Minute2 - 1);
State <= B_INPUT;
END IF;
ELSIF (Minute2 = 5) THEN
Minute2 <= (Minute2 - 5);
State <= B_INPUT;
ELSIF (Minute2 > 5) THEN
Minute2 <= (Minute2 - 1);
State <= B_INPUT;
END IF;
END IF;
--Clear button
IF (BUTTON1 = '0') THEN
Minute1 <= 0;
Minute2 <= 0;
Second1 <= 0;
Second2 <= 0;
State <= B_INPUT;
END IF;
--Start Button
IF (BUTTON0 = '0') THEN
--Turn off LEDs
INPUT_LED1 <= '0';
INPUT_LED2 <= '0';
INPUT_LED3 <= '0';
INPUT_LED4 <= '0';
State <= C_COUNTDOWN;
END IF;
---------------------------------C_COUNTDOWN---------------------------------
WHEN C_COUNTDOWN =>
IF (Second2 > 0) THEN
Second2 <= (Second2 - 1);
ELSIF (Second2 = 0) THEN
IF (Second1 > 0) THEN
Second2 <= 9;
Second1 <= (Second1 - 1);
ELSIF (Second1 = 0) THEN
IF (Minute2 > 0) THEN
Second1 <= 5;
Minute2 <= (Minute2 - 1);
IF (Second2 = 0) THEN
Second2 <= 9;
END IF;
ELSIF (Minute2 = 0) THEN
IF (Minute1 > 0) THEN
IF (Second1 = 0) THEN
Second1 <= 5;
Minute2 <= (Minute2 - 1);
IF (Second2 = 0) THEN
Second2 <= 9;
END IF;
END IF;
Minute2 <= 9;
Minute1 <= (Minute1 - 1);
ELSIF (Minute1 <= 0) THEN
State <= D_DONE;
END IF;
END IF;
END IF;
END IF;
--Reset Button
IF (BUTTON1 = '0') THEN
STATE <= A_ON_OFF;
--Input button
ELSIF (BUTTON0 = '0') THEN
STATE <= B_INPUT;
END IF;
---------------------------------D_DONE---------------------------------
WHEN D_DONE =>
--LEDR0
DONE_LED <= '1';
--Reset button
IF (BUTTON1 = '0') THEN
DONE_LED <= '0';
STATE <= A_ON_OFF;
--Input button
ELSIF (BUTTON0 = '0') THEN
DONE_LED <= '0';
STATE <= B_INPUT;
END IF;
END CASE;
END IF;
END PROCESS;
END Counter;
PROCESS(BUTTON3)
BEGIN
IF RISING_EDGE(BUTTON3) THEN
FF3 <= NOT(BUTTON3);
END IF;
END PROCESS;
if minute2 = 9 then
minute2 <= 0;
else
minute2 <= minute2 + 1;
end if;
signal debounce_en: std_logic;
signal button3_d0, button3_d1, button3_d2:
begin
button3_enable <= not_button3_d1 and not button3_d2 and button3_d3 and debounce_en;
您仍然需要同步到clk并生成一个clk周期启用。没有太多。您的代码似乎是由两个不同的人编写的，它不完整，架构缺少begin语句。这不是一个问题。谢谢David Koontz的帮助，因为我担心我有很多事情会发生冲突，而我的经验有限，我发现有些事情非常复杂，难以区分。谢谢你澄清其中的一些问题。有一个问题，我应该为ff3使用按钮3的下降沿吗？因为这样做我的代码也会有问题。搜索中不会出现命令，也不会让可能搜索的任何人受益
在问他们自己的问题之前，先找到你的问题。请清楚地向你们补充一个问题。你们有太多的知识，我有一个运行的代码，多谢了！
signal debounce_en: std_logic;
signal button3_d0, button3_d1, button3_d2:
begin
UNLABELLED1:
process(clk)
begin
if rising_edge(clk) then
debounce_en <= '0'; -- one ping only.
count <= count + 1;
if count = 4000000 then
clock <= not clock;
debounce_en <= '1'; -- for one clk every 4000000
count <= 1;
end if;
end if;
end process;
process (clk)
begin
if rising_edge(clk) and debounce_en = '1' then
button3_d0 <= button3;
button3_d1 <= button3_d0;
button3_d2 <= button3_d1;
end if;
button3_enable <= not button3_d1 and button3_d2 and debounce_en;
button3_enable <= not_button3_d1 and not button3_d2 and button3_d3 and debounce_en;
when b_input =>
if button3_enable = '1' then -- count up button
if minute2 = 9 then
minute2 <= 0;
else
minute2 <= minute2 + 1;
end if;
input_led <= '1'; --green led7
end if;