16X16点阵电子技术课程设计报告
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16X16点阵
北 华 航 天 工 业 学 院
《 电子技术 》
课程设计报告
报告题目： 16X16点阵控制接口设计 作者所在系部： 作者所在专业： 作者所在班级： B09212 作 者 姓 名 ： 张彪 作 者 学 号 ： 指导教师姓名：
完 成 时 间 ：
16X16点阵
课程设计任务书
16X16点阵
内 容 摘 要
LED显示屏广泛应用于车站、码头、机场、医院、市场和其他公共场所。 LED点阵显示是由多个独立的LED发光二极管封装而成。LED点阵显示屏可以显示数字或符号等。设计方案包括系统的硬件设计，软件流程图设计和VHDL语言的设计。设计采用动态扫描的显示方法。
LED列有4—16译码器控制。
关键词：LED 、 VHDL语言 、 4—16译码器
16X16点阵
目 录
一、 概 述 1
二、方案设计与论证 2
三、总原理图 2
四、元器件清单 4
五、程序 6
六、收获与体会 6
七、参考文献 6
16X16点阵
一 、概述
在实验仪中，16X16点阵的列驱动电路已经做好，其列选信号送到4—16译码电路，译码电路的输出通过8只75451驱动点阵管的16条共阴极列线；DIN[3..0]为显示花样模式选择，高电平有效；CLK为时钟输入端。
二 、方案设计与论证
用LED显示屏显示信息，不论显示文字还是图形，都是控制与组成这些图形或文字的各个点所在位置相应的LED器件发光。事先把需要显示的图案转换成点阵图形，在按照显示控制的要求以一定的格式形成显示数据。对于只控制通断的的图形显示屏来说，每个LED发光器件占据数据中的1位。
三 、总原理图
四 、原件清单
16X16点阵
LED发光二级管 256个 4—16译码器 1个 EPF10K10LC84-4芯片 1个 分频器 1个 拨码开关 3个 按键开关 1个 导线 导线
五 、程序
library ieee;
use ieee.std_logic_1164.all; use ieee.std_logic_unsigned.all; use ieee.std_logic_arith.all; use ieee.numeric_std; entity keshe is
port(
clk,clr : in std_logic;
din : in std_logic_vector(3 downto 0); dout : out std_logic_vector(15 downto 0); selout : out std_logic_vector(3 downto 0) );
end keshe;
architecture behave of keshe is
signal din_temp:std_logic_vector(3 downto 0); signal sel_temp :std_logic_vector(3 downto 0); signal dout_temp:std_logic_vector(15 downto 0); signal flag:std_logic;
16X16点阵
signal x: std_logic_vector(1 downto 0);
begin
process (clk ,din,clr)
variable note:integer :=0; variable num:integer :=0; begin if clr='1' then
sel_temp<=(others=>'0');
dout_temp<=(others=>'0');
flag<='1';
dout_temp<="0000000000000001"; elsif clk'event and clk='1' then
if din="0000" then
sel_temp<=sel_temp+1;
sel_temp<=sel_temp+1;
if sel_temp="1111" then sel_temp<="0000"; end if;
selout<=sel_temp; num:=num+1;
if num=160 then
num:=0;
if flag='1' then lop1:
for i in 1 to 15 loop
dout_temp(i)<=dout_temp(i-1); dout<=dout_temp; if dout_temp(15)='1' then
dout_temp(15)<='0';
16X16点阵
end if;
end loop lop1;
elsif flag='0' then lop2:
for i in 15 downto 1 loop
dout_temp(i-1)<=dout_temp(i); dout<=dout_temp; if dout_temp(0)='0' then
dout_temp(0)<='1'; flag<='1';
end if;
end loop lop2;
end if;
end if;
elsif din="0001" then
count<=count+1;
if count="1111" then
count<="0000"; note:=note+1; if note=100 then
note:=0; x<=x+1; if x="11" then
x<="00";
end if;
end if;
end if;
if x="00" then case count is
16X16点阵
WHEN <="0000000000000000";
WHEN
<="0000011100000000";
WHEN
<="0001000000010000";
WHEN
<="0001000000010000";
WHEN
<="0001000000010000";
WHEN
<="0001000000000000";
WHEN
<="0000111111111100";
WHEN
<="0000000000000000";
WHEN
<="0000111111111110";
WHEN
<="0000010000100000";
WHEN
<="0000010000100000";
WHEN
<="0000010000100000";
WHEN
<="0000000000000000";
WHEN
<="0000000000000000";
WHEN
<="0000000000000000";
"0000"=>SELOUT<="0000";dout
"0001"=>SELOUT<="0001";dout
"0010"=>SELOUT<="0010";dout
"0011"=>SELOUT<="0011";dout
"0100"=>SELOUT<="0100";dout
"0101"=>SELOUT<="0101";dout
"0110"=>SELOUT<="0110";dout
"0111"=>SELOUT<="0111";dout
"1000"=>SELOUT<="1000";dout
"1001"=>SELOUT<="1001";dout
"1010"=>SELOUT<="1010";dout
"1011"=>SELOUT<="1011";dout
"1100"=>SELOUT<="1100";dout
"1101"=>SELOUT<="1101";dout
"1110"=>SELOUT<="1110";dout
16X16点阵
WHEN "1111"=>SELOUT<="1111";dout
<="0000000000000000";
WHEN OTHERS=>NULL; end case; end if；
if x="01" then
case count is
WHEN
<="0000000010000000";
WHEN
<="0000000010000000";
WHEN
<="0000001010000100";
WHEN
<="0000001010001000";
WHEN
<="0000001000111111";
WHEN
<="0000001000000000";
WHEN
<="0000001111000000";
WHEN
<="1111110000000011";
WHEN
<="0000010011111100";
WHEN
<="0000010000001000";
WHEN
<="0000010000010000";
WHEN
"0000"=>SELOUT<="0000";dout
"0001"=>SELOUT<="0001";dout
"0010"=>SELOUT<="0010";dout
"0011"=>SELOUT<="0011";dout
"0100"=>SELOUT<="0100";dout
"0101"=>SELOUT<="0101";dout
"0110"=>SELOUT<="0110";dout
"0111"=>SELOUT<="0111";dout
"1000"=>SELOUT<="1000";dout "1001"=>SELOUT<="1001";dout
"1010"=>SELOUT<="1010";dout
"1011"=>SELOUT<="1011";dout
16X16点阵
<="0000010000100000";
WHEN
"1100"=>SELOUT<="1100";dout
<="0000000000000000";
WHEN
"1101"=>SELOUT<="1101";dout
<="0000000000000000";
WHEN
"1110"=>SELOUT<="1110";dout
<="0000000000000000";
WHEN
"1111"=>SELOUT<="1111";dout
<="0000000000000000";
WHEN OTHERS=>NULL; end case; end if;
if x="10" then
case count is
WHEN
"0000"=>SELOUT<="0000";dout
<="0000000000000000";
WHEN
"0001"=>SELOUT<="0001";dout
<="0000000000000000";
WHEN
"0010"=>SELOUT<="0010";dout
<="0000100000000000";
WHEN
"0011"=>SELOUT<="0011";dout
<="0001000000010000";
WHEN
"0100"=>SELOUT<="0100";dout
<="0000100000010000";
WHEN
"0101"=>SELOUT<="0101";dout
<="0000001111010010";
WHEN
"0110"=>SELOUT<="0110";dout
<="0000000000001001";
WHEN
"0111"=>SELOUT<="0111";dout
<="0000001111101000";
16X16点阵
WHEN <="0000010000001000";
WHEN
<="0000000000000000";
WHEN
<="0011111111111000";
WHEN
<="0001000010101111";
WHEN
<="0000000010001000";
WHEN
<="0000111111110000";
WHEN
<="0001000100000000";
WHEN
<="0010000100000000";
WHEN OTHERS=>NULL; end case; end if;
if x="11" then
case count is
WHEN
<="0000000000000000";
WHEN
<="0000000001000000";
WHEN
<="0100000001000100";
WHEN
<="0001100001000100";
WHEN
"1000"=>SELOUT<="1000";dout
"1001"=>SELOUT<="1001";dout
"1010"=>SELOUT<="1010";dout
"1011"=>SELOUT<="1011";dout
"1100"=>SELOUT<="1100";dout
"1101"=>SELOUT<="1101";dout
"1110"=>SELOUT<="1110";dout
"1111"=>SELOUT<="1111";dout
"0000"=>SELOUT<="0000";dout
"0001"=>SELOUT<="0001";dout
"0010"=>SELOUT<="0010";dout
"0011"=>SELOUT<="0011";dout
"0100"=>SELOUT<="0100";dout
16X16点阵
<="0000001101000100";
WHEN
"0101"=>SELOUT<="0101";dout
<="0000000001111100";
WHEN
"0110"=>SELOUT<="0110";dout
<="0000001101000100";
WHEN
"0111"=>SELOUT<="0111";dout
<="0001100001000100";
WHEN
"1000"=>SELOUT<="1000";dout
<="0010000001000100";
WHEN
"1001"=>SELOUT<="1001";dout
<="0100000001000000";
WHEN
"1010"=>SELOUT<="1010";dout
<="1000000001000000";
WHEN
"1011"=>SELOUT<="1011";dout
<="0000000000000000";
WHEN
"1100"=>SELOUT<="1100";dout
<="0000000000000000";
WHEN
"1101"=>SELOUT<="1101";dout
<="0000000000000000";
WHEN
"1110"=>SELOUT<="1110";dout
<="0000000000000000";
WHEN
"1111"=>SELOUT<="1111";dout
<="0000000000000000";
WHEN OTHERS=>NULL;
end case;
end if;
elsif din="0010" then
count<=count+1;
if count="1111" then
count<="0000";
16X16点阵
end if;
case count is
WHEN
<="0000000000000000";
WHEN
<="0011111111111100";
WHEN
<="0010000000000100";
WHEN
<="0010000000000100";
WHEN
<="0010000000000100";
WHEN
<="0010000000000100";
WHEN
<="0010000000000100";
WHEN
<="0010000000000100";
WHEN
<="0010000000000100";
WHEN
<="0010000000000100";
WHEN
<="0010000000000100";
WHEN
<="0010000000000100";
WHEN
<="0010000000000100";
WHEN
<="0010000000000100";
"0000"=>SELOUT<="0000";dout
"0001"=>SELOUT<="0001";dout
"0010"=>SELOUT<="0010";dout
"0011"=>SELOUT<="0011";dout
"0100"=>SELOUT<="0100";dout
"0101"=>SELOUT<="0101";dout
"0110"=>SELOUT<="0110";dout
"0111"=>SELOUT<="0111";dout
"1000"=>SELOUT<="1000";dout
"1001"=>SELOUT<="1001";dout
"1010"=>SELOUT<="1010";dout
"1011"=>SELOUT<="1011";dout
"1100"=>SELOUT<="1100";dout
"1101"=>SELOUT<="1101";dout
16X16点阵
<="0011111111111100";
WHEN
"1111"=>SELOUT<="1111";dout
<="0000000000000000";
WHEN OTHERS=>NULL;
end case;
elsif din="0011" then
count<=count+1;
if count="1111" then
count<="0000"; end if;
case count is
WHEN
<="0000000000000000";
WHEN
<="0000000000000000";
WHEN
<="0000000100000000";
WHEN
<="0000001010000000";
WHEN
<="0000010001000000";
WHEN
<="0000100000100000";
WHEN
<="0001000000010000";
WHEN
<="0010000000001000";
WHEN
<="0010000000001000";
"0000"=>SELOUT<="0000";dout
"0001"=>SELOUT<="0001";dout
"0010"=>SELOUT<="0010";dout
"0011"=>SELOUT<="0011";dout
"0100"=>SELOUT<="0100";dout
"0101"=>SELOUT<="0101";dout
"0110"=>SELOUT<="0110";dout
"0111"=>SELOUT<="0111";dout
"1000"=>SELOUT<="1000";dout
16X16点阵
<="0010000000001000";
WHEN
"1010"=>SELOUT<="1010";dout
<="0010000000001000";
WHEN
"1011"=>SELOUT<="1011";dout
<="0010000000001000";
WHEN
"1100"=>SELOUT<="1100";dout
<="0010000000001000";
WHEN
"1101"=>SELOUT<="1101";dout
<="0010000000001000";
WHEN
"1110"=>SELOUT<="1110";dout
<="0011111111111000";
WHEN
"1111"=>SELOUT<="1111";dout
<="0000000000000000";
WHEN OTHERS=>NULL;
end case;
elsif din="0100" then
count<=count+1;
if count="1111" then
count<="0000";
end if;
case count is
"0000"=>SELOUT<="0000";dout
WHEN
<="0000000000000000";
WHEN
"0001"=>SELOUT<="0001";dout
<="0000000000000000";
WHEN
"0010"=>SELOUT<="0010";dout
<="0000000100000000";
WHEN
"0011"=>SELOUT<="0011";dout
<="0000000100000000";
16X16点阵
<="0000000100000000";
WHEN
"0101"=>SELOUT<="0101";dout
<="0000000100000000";
WHEN
"0110"=>SELOUT<="0110";dout
<="1111111111111111";
WHEN
"0111"=>SELOUT<="0111";dout
<="0000000100000000";
WHEN
"1000"=>SELOUT<="1000";dout
<="0000000100000000";
WHEN
"1001"=>SELOUT<="1001";dout
<="0000000100000000";
WHEN
"1010"=>SELOUT<="1010";dout
<="0000000100000000";
WHEN
"1011"=>SELOUT<="1011";dout
<="0000000100000000";
WHEN
"1100"=>SELOUT<="1100";dout
<="0000000100000000";
WHEN
"1101"=>SELOUT<="1101";dout
<="0000000100000000";
WHEN
"1110"=>SELOUT<="1110";dout
<="0000000100000000";
WHEN
"1111"=>SELOUT<="1111";dout
<="0000000100000000";
WHEN OTHERS=>NULL;
end case;
elsif din="0101" then
count<=count+1;
if count="1111" then
count<="0000";
16X16点阵
end if;
case count is
WHEN
<="0000000000000000";
WHEN
<="0000000000000000";
WHEN
<="0000000000000000";
WHEN
<="0000001111000000";
WHEN
<="0000110000110000";
WHEN
<="0001100000011000";
WHEN
<="0011000000001100";
WHEN
<="0110000000001100";
WHEN
<="1100000000000110";
WHEN
<="0110000000001100";
WHEN
<="0011000000011000";
WHEN
<="0001100000110000";
WHEN
<="0000011111000000";
WHEN
<="0000000000000000";
"0000"=>SELOUT<="0000";dout
"0001"=>SELOUT<="0001";dout
"0010"=>SELOUT<="0010";dout
"0011"=>SELOUT<="0011";dout
"0100"=>SELOUT<="0100";dout
"0101"=>SELOUT<="0101";dout
"0110"=>SELOUT<="0110";dout
"0111"=>SELOUT<="0111";dout
"1000"=>SELOUT<="1000";dout
"1001"=>SELOUT<="1001";dout
"1010"=>SELOUT<="1010";dout
"1011"=>SELOUT<="1011";dout
"1100"=>SELOUT<="1100";dout
"1101"=>SELOUT<="1101";dout
16X16点阵
WHEN "1110"=>SELOUT<="1110";dout
<="0000000000000000";
WHEN
"1111"=>SELOUT<="1111";dout
<="0000000000000000";
WHEN OTHERS=>NULL;
end case; end if; end if;
end process;
end behave;
六 、收获与体会
通过这次课设，我不仅更加熟悉了VHDL语言的用运，还学到了很多知识。
16X16点阵
七 、参考文献 《EDA技术与实验》
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