名稱：多功能交通燈控制系統(tǒng)VHDL十字路口紅綠燈倒計時DE2-115開發(fā)板（代碼在文末下載）

軟件：Quartus II

語言：VHDL

代碼功能：

要求設計一個多功能交通燈控制系統(tǒng)。并進行軟件仿真與硬件實現(xiàn)。要求做到：

(1)主干道綠燈亮時,支干道紅燈亮,反之亦然,兩者交替允許通行,主干道每次放行60s,支干道每次放行45s.每次由綠燈變?yōu)榧t燈的過程中,黃燈亮3S作為過渡;

(2)能實現(xiàn)正常的倒計時顯示功能;

(3)能實現(xiàn)總體清零功能:計數(shù)器由初始狀態(tài)開始計數(shù),對應狀態(tài)的指示燈亮

(4)能實現(xiàn)特殊狀態(tài)的功能顯示:進入特殊狀態(tài)時,東西、南北路口均顯示紅燈狀態(tài)

(5)在任何一個時刻,有一盞燈亮而且只有一盞燈亮。否則發(fā)出故障信號,提醒相關人員去維修。

本代碼的通行時間可以設置，如下代碼修改即可：

--主、支干道均有車時，兩者交替允許通行，
--主干道每次放行60秒，支干道每次放行45秒，
--設立60秒、45秒計時、顯示電路
--設置時間，可自行修改時間,
--主路紅燈時間等于支路綠燈加黃燈
--支路紅燈時間等于主路綠燈加黃燈
???G1_time?<=?"00111100";--主路綠燈60s
???Y1_time?<=?"00000011";--主路黃燈3s
???G2_time?<=?"00101101";--支路綠燈45s
???Y2_time?<=?"00000011";--支路黃燈3s

要求學生有一定的模擬及數(shù)字電子技術知識,對VHDL語言比較熟悉,有一定的動手能力

FPGA代碼Verilog/VHDL代碼資源下載：www.hdlcode.com

本代碼已在DE2-115開發(fā)板驗證，開發(fā)板如下，其他開發(fā)板可以修改管腳適配：

演示視頻：

設計文檔：

1. 工程文件

2. 程序文件

3. 管腳分配

4. 程序編譯

5. RTL圖

6. 仿真圖

整體仿真圖

分頻模塊仿真圖

交通燈控制模塊

顯示模塊

部分代碼展示:

LIBRARY?ieee;
???USE?ieee.std_logic_1164.all;
USE?ieee.std_logic_unsigned.all;
--交通燈
ENTITY?Traffic_Light_Control?IS
???PORT?(
??????clk?????:?IN?STD_LOGIC;--50Mhz
reset_n?:?IN?STD_LOGIC;--復位
control?:?IN?STD_LOGIC;--特殊功能
??????R1??????:?OUT?STD_LOGIC;--高電平亮，主路紅燈
??????G1??????:?OUT?STD_LOGIC;--高電平亮，主路綠燈
??????Y1??????:?OUT?STD_LOGIC;--高電平亮，主路黃燈
??????R2??????:?OUT?STD_LOGIC;--高電平亮，支路紅燈
??????G2??????:?OUT?STD_LOGIC;--高電平亮，支路綠燈
??????Y2??????:?OUT?STD_LOGIC;--高電平亮，支路黃燈
alarm???:?OUT?STD_LOGIC;--故障提示
??????HEX0????:?OUT?STD_LOGIC_VECTOR(6?DOWNTO?0);--數(shù)碼管0
??????HEX1????:?OUT?STD_LOGIC_VECTOR(6?DOWNTO?0);--數(shù)碼管1
??????HEX2????:?OUT?STD_LOGIC_VECTOR(6?DOWNTO?0);--數(shù)碼管2
??????HEX3????:?OUT?STD_LOGIC_VECTOR(6?DOWNTO?0)--數(shù)碼管3
???);
END?Traffic_Light_Control;
ARCHITECTURE?behave?OF?Traffic_Light_Control?IS
--分頻模塊
COMPONENT?CLOCK?IS--?Divide?50MHz?to?1Hz
GENERIC(D?:?INTEGER?:=?50000000);--仿真時改小為500加快仿真速度，實際上板驗證時改為50000000
???PORT(CLK:?IN?STD_LOGIC;
?????????DAV:?OUT?STD_LOGIC);
???END?COMPONENT;
--顯示模塊
???COMPONENT?HEX?IS
??????PORT?(
?????????clk?????:?IN?STD_LOGIC;
?????????SMG_1???:?IN?STD_LOGIC_VECTOR(7?DOWNTO?0);
?????????SMG_2???:?IN?STD_LOGIC_VECTOR(7?DOWNTO?0);
?????????HEX0????:?OUT?STD_LOGIC_VECTOR(6?DOWNTO?0);
?????????HEX1????:?OUT?STD_LOGIC_VECTOR(6?DOWNTO?0);
?????????HEX2????:?OUT?STD_LOGIC_VECTOR(6?DOWNTO?0);
?????????HEX3????:?OUT?STD_LOGIC_VECTOR(6?DOWNTO?0)
??????);
???END?COMPONENT;
???
--交通燈控制模塊
???COMPONENT?RGY?IS
??????PORT?(
?????????clk_1???:?IN?STD_LOGIC;
clk???:?IN?STD_LOGIC;
reset_n?:?IN?STD_LOGIC;--復位
control?:?IN?STD_LOGIC;----特殊功能
?????????G1_time?:?IN?STD_LOGIC_VECTOR(7?DOWNTO?0);
?????????Y1_time?:?IN?STD_LOGIC_VECTOR(7?DOWNTO?0);
?????????G2_time?:?IN?STD_LOGIC_VECTOR(7?DOWNTO?0);
?????????Y2_time?:?IN?STD_LOGIC_VECTOR(7?DOWNTO?0);
?????????R1??????:?OUT?STD_LOGIC;
?????????G1??????:?OUT?STD_LOGIC;
?????????Y1??????:?OUT?STD_LOGIC;
?????????R2??????:?OUT?STD_LOGIC;
?????????G2??????:?OUT?STD_LOGIC;
?????????Y2??????:?OUT?STD_LOGIC;
??????SMG1?????:?OUT?STD_LOGIC_VECTOR(7?DOWNTO?0);--輸出數(shù)碼管顯示數(shù)
??????SMG2?????:?OUT?STD_LOGIC_VECTOR(7?DOWNTO?0)--輸出數(shù)碼管顯示數(shù)
??????);
???END?COMPONENT;
???
???
???SIGNAL?clk_1??????:?STD_LOGIC;
???SIGNAL?SMG1???????:?STD_LOGIC_VECTOR(7?DOWNTO?0);
???SIGNAL?SMG2???????:?STD_LOGIC_VECTOR(7?DOWNTO?0);
???
???SIGNAL?R1_led?????:?STD_LOGIC;
???SIGNAL?G1_led?????:?STD_LOGIC;
???SIGNAL?Y1_led?????:?STD_LOGIC;
???
???SIGNAL?R2_led?????:?STD_LOGIC;
???SIGNAL?G2_led?????:?STD_LOGIC;
???SIGNAL?Y2_led?????:?STD_LOGIC;
???
???SIGNAL?G1_time????:?STD_LOGIC_VECTOR(7?DOWNTO?0);
???SIGNAL?Y1_time????:?STD_LOGIC_VECTOR(7?DOWNTO?0);
???SIGNAL?G2_time????:?STD_LOGIC_VECTOR(7?DOWNTO?0);
???SIGNAL?Y2_time????:?STD_LOGIC_VECTOR(7?DOWNTO?0);
SIGNAL?led1_cnt????:?STD_LOGIC_VECTOR(1?DOWNTO?0);
SIGNAL?led2_cnt????:?STD_LOGIC_VECTOR(1?DOWNTO?0);
???
???SIGNAL?HEX0_SIG?:?STD_LOGIC_VECTOR(6?DOWNTO?0);
???SIGNAL?HEX1_SIG?:?STD_LOGIC_VECTOR(6?DOWNTO?0);
???SIGNAL?HEX2_SIG?:?STD_LOGIC_VECTOR(6?DOWNTO?0);
???SIGNAL?HEX3_SIG?:?STD_LOGIC_VECTOR(6?DOWNTO?0);
BEGIN
--每條路led計數(shù)
???led1_cnt<=('0'&?R1_led)?+?('0'&?G1_led)?+?('0'&?Y1_led);
led2_cnt<=('0'&?R2_led)?+?('0'&?G2_led)?+?('0'&?Y2_led);
--判斷是否有2個以上燈亮,若有輸出1
alarm<='1'?when(led1_cnt?>?"01"?)?or?(led2_cnt?>?"01")?else?'0'?;
???HEX0?<=?HEX0_SIG;
???HEX1?<=?HEX1_SIG;
???HEX2?<=?HEX2_SIG;
???HEX3?<=?HEX3_SIG;
???R1?<=?R1_led;--主路紅燈
???G1?<=?G1_led;--主路綠燈
???Y1?<=?Y1_led;--主路黃燈
???R2?<=?R2_led;--支路紅燈
???G2?<=?G2_led;--支路綠燈
???Y2?<=?Y2_led;--支路黃燈
???
--分頻到1hz???
???U_CLOCK?:?CLOCK
??????PORT?MAP?(
?????????clk??=>?clk,
?????????dav??=>?clk_1
??????);
--主、支干道均有車時，兩者交替允許通行，
--主干道每次放行60秒，支干道每次放行45秒，
--設立60秒、45秒計時、顯示電路
--設置時間，可自行修改時間,
--主路紅燈時間等于支路綠燈加黃燈
--支路紅燈時間等于主路綠燈加黃燈
???G1_time?<=?"00111100";--主路綠燈60s
???Y1_time?<=?"00000011";--主路黃燈3s
???G2_time?<=?"00101101";--支路綠燈45s
???Y2_time?<=?"00000011";--支路黃燈3s
???
???
?--交通燈控制模塊??
???U1?:?RGY
??????PORT?MAP?(
?????????clk_1????=>?clk_1,
clk????=>?clk,
reset_n=>reset_n,
?????????control??=>?control,
?????????R1???????=>?R1_led,
?????????G1???????=>?G1_led,
?????????Y1???????=>?Y1_led,
?????????
?????????R2???????=>?R2_led,
?????????G2???????=>?G2_led,
?????????Y2???????=>?Y2_led,
?????????
?????????G1_time??=>?G1_time,
?????????Y1_time??=>?Y1_time,
?????????G2_time??=>?G2_time,
?????????Y2_time??=>?Y2_time,
?????????
?????????SMG1?????=>?SMG1,--數(shù)碼管顯示
?????????SMG2?????=>?SMG2--數(shù)碼管顯示
??????);
???
???--數(shù)碼管顯示模塊
???U3?:?HEX
??????PORT?MAP?(
?????????clk????=>?clk,
?????????SMG_1??=>?SMG1,--數(shù)碼管數(shù)據(jù)顯示
?????????SMG_2??=>?SMG2,--數(shù)碼管數(shù)據(jù)顯示
?????????
?????????HEX0???=>?HEX0_SIG,--低電平亮
?????????HEX1???=>?HEX1_SIG,--低電平亮
?????????HEX2???=>?HEX2_SIG,--低電平亮
?????????HEX3???=>?HEX3_SIG--低電平亮
??????);
???
END?behave;

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