所以我正在创建一个交通灯状态机，我的代码合成有几个问题。多年来我一直在努力解决它。
问题：
- 计数器模块未与其他模块连接
顶层示意图：可在http://i.imgur.com/MIeon6T.png查看
顶级.vhdl
library IEEE;
use IEEE.STD_LOGIC_1164.ALL;
use IEEE.STD_LOGIC_ARITH.ALL;
use IEEE.STD_LOGIC_UNSIGNED.ALL;
entity TopLevel is Port ( MasterReset : in STD_LOGIC;
Clock : in STD_LOGIC;
CarEW : in STD_LOGIC;
CarNS : in STD_LOGIC;
PedEW : in STD_LOGIC;
PedNS : in STD_LOGIC;
debugLED : out STD_LOGIC;
Lights : out STD_LOGIC_VECTOR (3 downto 0));
end TopLevel;
architecture Behavioral of TopLevel is
-- Synchronized Button inputs --
signal PedEWButton : STD_LOGIC;
signal PedNSButton : STD_LOGIC;
signal CarEWButton : STD_LOGIC;
signal CarNSButton : STD_LOGIC;
--Reset, Clear and Count Signals --
signal ClearRegister : STD_LOGIC;
signal ResetCounter : STD_LOGIC;
signal Count: STD_LOGIC_VECTOR (8 downto 0);
-- Registered Ped Signals --
signal PedEWReg : STD_LOGIC;
signal PedNSReg : STD_LOGIC;
begin
-- Check For MasterReset and Sync Inputs
process (MasterReset, clock, CarEWButton, CarNSButton, PedEWButton, PedNSButton)
begin
if (MasterReset = '1') then
debugLED <= '1';
CarNSButton <= '1';
CarEWButton <= '1';
PedEWButton <= '1';
PedNSButton <= '1';
elsif rising_edge(clock) then
CarEWButton <= CarEW;
CarNSButton <= CarNS;
PedEWButton <= PedEW;
PedNSButton <= PedNS;
end if;
end process;
-- Instantiate State Machine --
StateMachine:
entity work.TrafficStatesMachine
Port Map (
MasterReset => MasterReset,
Clock => Clock,
CarEWButton => CarEWButton,
CarNSButton => CarNSButton,
PedEWButton => PedEWReg,
PedNSButton => PedNSReg,
Counter => Count,
Lights => Lights,
ResetCounter => ResetCounter,
ClearRegister => ClearRegister
);
-- Instantiate Counter --
Counter:
entity work.Counter
Port Map (
MasterReset => MasterReset,
ResetCounter => ResetCounter,
Clock => Clock,
Counter => Count
);
-- Instantiate PedRegister --
PedRegister:
entity work.PedRegister
Port Map (
PedNSButton => PedNSButton,
PedEWButton => PedEWButton,
PedNSRegOut => PedNSReg,
PedEWRegOut => PedEWReg,
ClearRegister => ClearRegister
);
end architecture Behavioral;
交通状态机.vhdl
--===================================================================
-- Traffic states Machine
--
-- A states Machine to interpret and manage traffic
--
--===================================================================
library IEEE;
use IEEE.STD_LOGIC_1164.ALL;
use IEEE.STD_LOGIC_ARITH.ALL;
use IEEE.STD_LOGIC_UNSIGNED.ALL;
entity TrafficStatesMachine is
Port (
MasterReset : IN std_logic;
Clock : IN std_logic;
CarEWButton : IN std_logic;
CarNSButton : IN std_logic;
PedEWButton : IN std_logic;
PedNSButton : IN std_logic;
Counter : IN std_logic_vector(8 downto 0);
ResetCounter : OUT std_logic;
ClearRegister : OUT std_logic;
Lights : OUT std_logic_vector(3 downto 0)
);
end TrafficStatesMachine;
architecture Behavioural of TrafficStatesMachine is
type states_type is (EWCarGreen, EWPedGreen, EWAmber, NSCarGreen, NSPedGreen, NSAmber );
signal states: states_type;
begin
process( MasterReset, Clock, CarEWButton, CarNSButton, PedEWButton, PedNSButton, Counter )
begin
if (MasterReset = '1') then
states <= EWCarGreen;
elsif rising_edge(clock) then
case states is
when EWCarGreen =>
ClearRegister <= '0';
if (Counter < "111111111") then
if (PedEWButton = '1') then
if (CarNSButton = '0') and (PedNSButton = '0') then
states <= EWPedGreen;
ResetCounter <= '1';
else
states <= EWCarGreen;
end if;
end if;
elsif (Counter = "111111111") then
if (CarNSButton = '1') then
states <= EWAmber;
ResetCounter <= '1';
elsif (PedNSButton = '1') then
states <= EWAmber;
ResetCounter <= '1';
else
states <= EWCarGreen;
end if;
end if;
when EWPedGreen =>
ClearRegister <= '1';
ResetCounter <= '0';
if (Counter = "110010000") then
states <= EWCarGreen;
else
states <= EWPedGreen;
end if;
when EWAmber =>
ResetCounter <= '0';
if (Counter = "011001000") then
if (PedNSButton = '1') then
states <= NSPedGreen;
ResetCounter <= '1';
else
states <= NSCarGreen;
ResetCounter <= '1';
end if;
else
states <= EWAmber;
end if;
when NSCarGreen =>
ResetCounter <= '0';
ClearRegister <= '0';
if (Counter < "111111111") then
if (PedNSButton = '1') then
if (CarEWButton = '0') and (PedEWButton = '0') then
states <= NSPedGreen;
ResetCounter <= '1';
else
states <= NSCarGreen;
end if;
end if;
elsif (Counter = "111111111") then
if (CarEWButton = '1') then
states <= NSAmber;
ResetCounter <= '1';
elsif (PedEWButton = '1') then
states <= NSAmber;
ResetCounter <= '1';
else
states <= NSCarGreen;
end if;
end if;
when NSPedGreen =>
ResetCounter <= '0';
ClearRegister <= '1';
if (Counter = "110010000") then
states <= NSCarGreen;
else
states <= NSPedGreen;
end if;
when NSAmber =>
ResetCounter <= '0';
if (Counter = "011001000") then
if (PedEWButton = '1') then
states <= EWPedGreen;
ResetCounter <= '1';
else
states <= EWCarGreen;
ResetCounter <= '1';
end if;
else
states <= NSAmber;
end if;
end case;
end if;
end process;
process( states )
begin
case states is
when EWCarGreen => lights <= "0010";
when EWPedGreen => lights <= "0011";
when EWAmber => lights <= "0001";
when NSCarGreen => lights <= "1000";
when NSPedGreen => lights <= "1100";
when NSAmber => lights <= "0100";
when others => lights <= "0010";
end case;
end process;
end Behavioural;
计数器.vhdl
--===================================================================
-- Counter.vhdl
-- A counter to give time delays
--===================================================================
library IEEE;
use IEEE.STD_LOGIC_1164.ALL;
use IEEE.STD_LOGIC_ARITH.ALL;
use IEEE.STD_LOGIC_UNSIGNED.ALL;
entity Counter is
Port ( MasterReset : in std_logic;
Clock : in std_logic;
ResetCounter : in std_logic;
Counter : out std_logic_vector(8 downto 0));
end entity Counter;
architecture Behavioural of Counter is
signal Count : std_logic_vector(8 downto 0);
begin
Counter <= Count;
-- Produce Count sequence from 0 ... 512
process( MasterReset, Clock, ResetCounter)
begin
if (MasterReset = '1') then
Count <= "000000000"; -- start count from 0
elsif rising_edge(clock) then
if (ResetCounter = '1') then
Count <= "000000000";
elsif (Count < "111111111") then
Count <= Count + "000000001";
else
Count <= "111111111";
end if;
end if;
end process;
end architecture Behavioural;
PedRegister .vhdl
library IEEE;
use IEEE.STD_LOGIC_1164.ALL;
use IEEE.STD_LOGIC_ARITH.ALL;
use IEEE.STD_LOGIC_UNSIGNED.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 PedRegister is
Port ( ClearRegister : in STD_LOGIC;
PedNSButton: in STD_LOGIC;
PedEWButton : in STD_LOGIC;
PedNSRegOut : out STD_LOGIC;
PedEWRegOut : out STD_LOGIC);
end PedRegister;
architecture Behavioral of PedRegister is
signal PedNSReg : STD_LOGIC;
signal PedEWReg : STD_LOGIC;
begin
PedNSRegOut <= PedNSReg;
PedEWRegOut <= PedEWReg;
process (PedNSButton, PedEWButton, ClearRegister)
begin
if ClearRegister = '1' then
PedNSReg <='0';
elsif PedNSButton = '1' then
PedNSReg <='1';
else
PedNSReg <= '0';
end if;
if ClearRegister = '1' then
PedEWReg <= '0';
elsif PedEWButton = '1' then
PedEWReg <='1';
else
PedEWReg <= '0';
end if;
end process;
end Behavioral;
顶级.ucf
##################################################
# #
# Pin Assignments for Digilent C-Mod C2 Module #
# Traffic Light Hardware #
# #
##################################################
# The C-MOD Pin numbers are shown in the COMMENTS=20
# e.g. CMOD-P35 is pin 35 of the module and is (usualy) used for the = Clock input
# The following 3 CPLD pins have special on-chip Clock buffers
# Usually uncomment one Clock line as required
NET "Clock" LOC =3D "p1"|IOSTANDARD=3DLVCMOS33; # CMOD-P35 - GCK2, = Global Clock input
#NET "Clock" LOC =3D "p43"|IOSTANDARD=3DLVCMOS33; # CMOD-P33 - GCK0, = Global Clock input, May be used for I/O
#NET "Clock" LOC =3D "p44"|IOSTANDARD=3DLVCMOS33; # CMOD-P34 - GCK1, = Global Clock input, May be used for I/O
# System level constraints
Net Clock TNM_NET =3D Clock;
Timespec TS_Clock =3D PERIOD Clock 1 us; # adjust to suit Clock
# Convenient to allocate a Reset pin
NET "MasterReset" LOC =3D "p30"|IOSTANDARD=3DLVCMOS33; # CMOD-P18 - = GSR, Global Set/Reset
Net "Reset" TIG; # No timing constraint on system reset
#NET "" LOC =3D "p12"|IOSTANDARD=3DLVCMOS33; # CMOD-P1
#NET "" LOC =3D "p13"|IOSTANDARD=3DLVCMOS33; # CMOD-P2
#NET "" LOC =3D "p14"|IOSTANDARD=3DLVCMOS33; # CMOD-P3
#NET "" LOC =3D "p16"|IOSTANDARD=3DLVCMOS33; # CMOD-P4
# CMOD-P5-8 - N/C
#NET "" LOC =3D "p18"|IOSTANDARD=3DLVCMOS33; # CMOD-P9
NET "debugLED" LOC =3D "p19"|IOSTANDARD=3DLVCMOS33; # CMOD-P10
#NET "clockLED" LOC =3D "p20"|IOSTANDARD=3DLVCMOS33; # CMOD-P11
#NET "" LOC =3D "p21"|IOSTANDARD=3DLVCMOS33; # CMOD-P12
#NET "" LOC =3D "p22"|IOSTANDARD=3DLVCMOS33; # CMOD-P13
#NET "" LOC =3D "p23"|IOSTANDARD=3DLVCMOS33; # CMOD-P14
#NET "LEDs<0>" LOC =3D "p27"|IOSTANDARD=3DLVCMOS33; # CMOD-P15
#NET "LEDs<1>" LOC =3D "p28"|IOSTANDARD=3DLVCMOS33; # CMOD-P16
#NET "LEDs<2>" LOC =3D "p29"|IOSTANDARD=3DLVCMOS33; # CMOD-P17
# CMOD-P18 - GSR, Global Set/Reset - see above
# CMOD-P19 - N/C
# CMOD-P20 - Vcc
# CMOD-P21 - Gnd
#NET "" LOC =3D "p31"|IOSTANDARD=3DLVCMOS33; # CMOD-P22 - GTS2, Global = Tristate control
#NET "" LOC =3D "p32"|IOSTANDARD=3DLVCMOS33; # CMOD-P23 - GTS3, Global = Tristate control
#NET "" LOC =3D "p33"|IOSTANDARD=3DLVCMOS33; # CMOD-P24 - GTS0, Global = Tristate control
#NET "" LOC =3D "p34"|IOSTANDARD=3DLVCMOS33; # CMOD-P25 - GTS1, Global = Tristate control
NET "CarEW" LOC =3D "p36"|IOSTANDARD=3DLVCMOS33; # CMOD-P26
NET "CarNS" LOC =3D "p37"|IOSTANDARD=3DLVCMOS33; # CMOD-P27
NET "PedEW" LOC =3D "p38"|IOSTANDARD=3DLVCMOS33; # CMOD-P28
NET "PedNS" LOC =3D "p39"|IOSTANDARD=3DLVCMOS33; # CMOD-P29
NET "Lights<0>" LOC =3D "p40"|IOSTANDARD=3DLVCMOS33; # CMOD-P30
NET "Lights<1>" LOC =3D "p41"|IOSTANDARD=3DLVCMOS33; # CMOD-P31
NET "Lights<2>" LOC =3D "p42"|IOSTANDARD=3DLVCMOS33; # CMOD-P32
NET "Lights<3>" LOC =3D "p43"|IOSTANDARD=3DLVCMOS33; # CMOD-P33 - = GCK0, Global Clock input, May be used for I/O
#NET "Clock" LOC =3D "p44"|IOSTANDARD=3DLVCMOS33; # CMOD-P34 - GCK1, = Global Clock input, May be used for I/O
# CMOD-P35 - GCK1, Global Clock inputs, see above
#NET "" LOC =3D "p2"|IOSTANDARD=3DLVCMOS33; # CMOD-P35
#NET "" LOC =3D "p3"|IOSTANDARD=3DLVCMOS33; # CMOD-P36
#NET "" LOC =3D "p4"|IOSTANDARD=3DLVCMOS33; # CMOD-P37
#NET "" LOC =3D "p5"|IOSTANDARD=3DLVCMOS33; # CMOD-P38
#NET "" LOC =3D "p6"|IOSTANDARD=3DLVCMOS33; # CMOD-P39
#NET "" LOC =3D "p8"|IOSTANDARD=3DLVCMOS33; # CMOD-P40
