我正在使用 vhdl 配置 fpga 板 spartan 3E 的项目。我要做的是一个天才谜题，在我的主代码中有一个状态机来控制逻辑。
当我使用 xilinx 模拟器模拟代码时一切正常，但是当我将 .bit 文件运行到 FPGA 板上时，会发生序列的第一个 LED 开启然后关闭，这应该会发生，但是当我单击右侧时按钮它只是停止工作，下一个序列永远不会显示。当然有一个按钮去抖动的问题，这就是我使用计数器来防止repic破坏系统的原因。
我正在努力使这段代码正常工作，但这个问题并没有消失，也许我做错了我不知道的事情，或者我没有做我应该做的事情。
这是我的主要代码，它是状态机和带有计数器的时钟进程。
Flag_conte = starts ou blocks the counter
Flag_estou_contando = 1=counting, 0= not counting, 3= just finished count.
BCD = board buttons IN
LEDs = corresponds to 4 leds that will show the sequence in the game
entity Algoritmo is
port(
clk: in std_logic;
BCD: in std_logic_vector (3 downto 0);
botaoStart: in std_logic;
botaoReset: in std_logic;
seven_seg: out std_logic_vector(6 downto 0);
anode: out std_logic_vector(3 downto 0);
LEDS: out std_logic_vector(3 downto 0)
);
END Algoritmo;
architecture Behavioral of Algoritmo is
subtype state_type is integer range 5 downto 0;
signal state, nextstate: state_type:=0;
signal Inicio, nclk: std_logic:= '0';
--variable posicaoAtual: integer :=0;
type mem1 is array (0 to 13) of std_logic_vector (3 downto 0);
constant vetorSequencia: mem1 := ( "0001", "0010", "0100", "1000", "0001", "0010", "0100", "1000", "0001", "0010", "0100", "1000", "0001", "0010");
constant generic1hz: integer:= 12_500_000;
signal t3count:integer:=0;
signal posA, posB, signalScore, Flag_conte,
Flag_estou_contando:integer:=0;
signal valor: integer :=12_500_000;
Begin
-------------
process (state,BCD,botaoStart,Flag_estou_contando)
variable Pos: integer :=0;
variable score: integer:=0;
variable posicaoAtual: integer:=0;
variable tentativa: std_logic_vector (3 downto 0);
begin
case state is
when 0 => if (botaoStart = '0')
then nextstate <= 0;-- estado idle, esperando entrada do tclado,led1=1;
else nextstate <= 1;
end if;
when 1 =>-- if(Flag_estou_contando =0)then
if(nextstate=2)then
Flag_conte <=0;
nextstate <= 2;
else if (nextstate/=2)then
if (posicaoAtual < score)then
if(Flag_estou_contando=0)then
LEDS <= vetorSequencia(posicaoAtual);
posA <= posicaoAtual;
Flag_conte<=1;
valor<=10_000_000;
else if(Flag_estou_contando=1)then
LEDS <=vetorSequencia(posicaoAtual);
else if (Flag_estou_contando=3)then
--posicaoAtual:=0;
posicaoAtual := posicaoAtual + 1;
posA <= posicaoAtual;
nextstate <=1;
Flag_conte<=0;
end if;end if;end if;
else if(posicaoAtual = score)then
if(Flag_estou_contando=0)then
Flag_conte<=1;
valor<=10_000_000;
-- posicaoAtual :=0;
posA <= posicaoAtual;
else if(Flag_estou_contando=1)then
LEDS <=vetorSequencia(posicaoAtual);
nextstate<=1;
else if(Flag_estou_contando=3)then
posicaoAtual:=0;
posA <= posicaoAtual;
Flag_conte<=0;
nextstate <= 2;
end if;end if;end if;
end if;end if;
Flag_conte <=1;
end if;end if;
when 2 => --if(Flag_estou_contando=0)then
if (BCD = "0000")then
if(Flag_estou_contando=0)then
LEDS <= "0000"; --nextstate <= 2;
else if (Flag_estou_contando=1)then
nextstate<=2;
else if (Flag_estou_contando=3)then
Flag_conte <= 0;
nextstate<=3;
end if;end if;end if;
else if(BCD /= "0000")then
if(Flag_estou_contando=0)then
Flag_conte<=1;
valor<=200_000_000;
tentativa := BCD;
LEDS <= tentativa;
else if(Flag_estou_contando=3)then
nextstate <= 3;
else if(Flag_estou_contando=1)then
LEDS <= tentativa;
nextstate <=2;
end if;end if;end if;
end if;end if;
when 3 => if (vetorSequencia(Pos) = tentativa)then
if (Pos < score)then
nextstate <= 2;
Pos := Pos + 1;
posB <= Pos;
else if(Pos = score)then
score := score + 1;
signalScore <= score;
nextstate <= 1;
Pos := 0;
if (score = 15)-- if score =15 finish game
then nextstate <= 5;
end if;--end if
end if;end if;
else -- se estiver errado, perde o jogo
nextstate <= 4; -- goes to game over
end if;
when 4 => if (botaoReset = '1') -- game over
then nextstate <= 4;-- "U LOST nOOB"
elsif (botaoReset = '0')
then nextstate <= 0; --
end if;
when 5 => if (botaoReset = '1') -- jogo ganho
then nextstate <= 5; -- "GG"
elsif (botaoReset = '0')
then nextstate <= 0;
end if;
end case;
end process;
process (clk, Flag_conte)
variable sum, count :integer:=0;
begin
if rising_edge(clk) then
if(Flag_estou_contando = 0) then
if (Flag_conte = 1) then
count :=0;
Flag_estou_contando <=1;
end if;
end if;
if(Flag_estou_contando=3) then
if(Flag_conte =0)then
Flag_estou_contando <= 0;
else
Flag_estou_contando <=3;
end if;
end if;
if (Flag_estou_contando =1)then
if(count < valor)then
count := count + 1;
else
count:=0;
Flag_estou_contando <=3;
end if;
end if;
sum := sum +1;
if(sum = generic1hz)then -- 1hz generate
state <= nextstate;
nclk <= not nclk;
sum := 0;--restart count for 1hz generate
end if;
end if;
end process;
end Behavioral;
if i wasnt clear, please let me know i will try to explain better, if anyone could help i would be very greatful, thank you for your time.