出租车计费器设计VHDL代码Quartus DE2-115开发板

名称：出租车计费器设计VHDL代码Quartus? DE2-115开发板

软件：Quartus

语言：VHDL

代码功能：

2km内起步价，起步价7元，超出2km后每公里1元，数码管显示里程和费用，按键控制开始和停止

FPGA代码Verilog/VHDL代码资源下载：www.hdlcode.com

本代码已在DE2-115开发板验证，DE2-115开发板如下，其他开发板可以修改管脚适配：

演示视频：

设计文档：

1.工程文件

2.程序文件

3.管脚分配

4.程序编译

5.RTL图

6.仿真图

计费模块仿真图

显示模块仿真图

部分代码展示:

LIBRARY?ieee;
???USE?ieee.std_logic_1164.all;
--出租车计价器
ENTITY?taxi_fee?IS
???PORT?(
??????clk??????:?IN?STD_LOGIC;--时钟
??????reset_n??:?IN?STD_LOGIC;--复位
??????stop?????:?IN?STD_LOGIC;--停车
??????start????:?IN?STD_LOGIC;--开车
??????HEX0?????:?OUT?STD_LOGIC_VECTOR(6?DOWNTO?0);--数码管0
??????HEX1?????:?OUT?STD_LOGIC_VECTOR(6?DOWNTO?0);--数码管1
??????HEX2?????:?OUT?STD_LOGIC_VECTOR(6?DOWNTO?0);--数码管2
??????HEX3?????:?OUT?STD_LOGIC_VECTOR(6?DOWNTO?0)--数码管3
???);
END?taxi_fee;
ARCHITECTURE?behave?OF?taxi_fee?IS
--计费控制模块
???COMPONENT?taxi_state?IS
??????PORT?(
?????????clk??????:?IN?STD_LOGIC;
?????????reset_n??:?IN?STD_LOGIC;
?????????stop?????:?IN?STD_LOGIC;
?????????start????:?IN?STD_LOGIC;
?????????mileage_out?:?OUT?STD_LOGIC_VECTOR(7?DOWNTO?0);
?????????totel_money_out?:?OUT?STD_LOGIC_VECTOR(7?DOWNTO?0)
??????);
???END?COMPONENT;
???
--数码管显示模块
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;
???SIGNAL?mileage_out?????:?STD_LOGIC_VECTOR(7?DOWNTO?0);
???SIGNAL?totel_money_out?:?STD_LOGIC_VECTOR(7?DOWNTO?0);
BEGIN
--调用计费控制模块
???i_taxi_state?:?taxi_state
??????PORT?MAP?(
?????????clk??????????????=>?clk,
?????????reset_n??????????=>?reset_n,
?????????stop?????????????=>?stop,
?????????start????????????=>?start,
?????????mileage_out??????=>?mileage_out,
?????????totel_money_out??=>?totel_money_out
??????);
???
???
???--调用数码管显示模块
???i_HEX?:?HEX
??????PORT?MAP?(
?????????clk????=>?clk,
?????????smg_1??=>?mileage_out,
?????????smg_2??=>?totel_money_out,
?????????hex0???=>?HEX0,
?????????hex1???=>?HEX1,
?????????hex2???=>?HEX2,
?????????hex3???=>?HEX3
??????);
???
END?behave;

点击链接获取代码文件：http://www.hdlcode.com/index.php?m=home&c=View&a=index&aid=1208