基于FPGA的16×16點(diǎn)陣顯示控制器

1、目錄第一章 系統(tǒng)設(shè)計(jì)總述11.1 設(shè)計(jì)要求11.2 要求分析1第二章 系統(tǒng)設(shè)計(jì)原理2第三章 系統(tǒng)子程序設(shè)計(jì)33.1 32進(jìn)制計(jì)數(shù)器設(shè)計(jì)33.2 16進(jìn)制計(jì)數(shù)器設(shè)計(jì)43.3 列驅(qū)動(dòng)設(shè)計(jì)53.4 行驅(qū)動(dòng)設(shè)計(jì)6第四章 原理圖仿真波形25第五章 設(shè)計(jì)小結(jié)26參考文獻(xiàn)27第一章 系統(tǒng)設(shè)計(jì)總述1.1 設(shè)計(jì)要求使用fpga設(shè)計(jì)一個(gè)1616的點(diǎn)陣顯示的控制器，使點(diǎn)陣顯示器以兩種花樣顯示“江西理工大學(xué)應(yīng)用科學(xué)學(xué)院歡迎您！”1.2 要求分析根據(jù)設(shè)計(jì)要求可以分析出：點(diǎn)陣顯示的花樣有靜態(tài)顯示一個(gè)漢字，一屏一屏的顯示漢字還有滾動(dòng)顯示漢字，還可以用亮著的燈顯示漢字或者用暗著的燈顯示漢字。根據(jù)以上的分析，本實(shí)驗(yàn)采用如下兩種

2、花樣顯示：第一種花樣是用亮著的燈組合所要顯示的字，第二種方案是用暗著的燈組成所需要的字。兩種花樣都是用一屏一屏的顯示方法。 圖1-1 方案一示例 圖1-2 方案二示例第二章 系統(tǒng)設(shè)計(jì)原理1616掃描led點(diǎn)陣只要其對(duì)應(yīng)的x、y軸順向偏壓，即可使led發(fā)亮。例如如果想使左上角led點(diǎn)亮，則y0=1，x0=0即可。應(yīng)用時(shí)限流電阻可以放在x軸或y軸。它有16個(gè)共陰極輸出端口，每個(gè)共陰極對(duì)應(yīng)有16個(gè)led顯示燈。本實(shí)驗(yàn)就是要通過cpld芯片產(chǎn)生讀時(shí)序，將字形 從寄存器中讀出，然后產(chǎn)生寫時(shí)序，寫入1616的點(diǎn)陣，使其掃描顯示輸出。為了顯示整個(gè)漢字，首先分布好漢字的排列，以行給漢字信息；然后以128hz的

3、時(shí)序逐個(gè)點(diǎn)亮每一行，即每行逐一加高電平，根據(jù)人眼的視覺殘留特性，使之形成整個(gè)漢字的顯示。led點(diǎn)陣每個(gè)點(diǎn)都有一個(gè)紅色的發(fā)光二極管。點(diǎn)陣內(nèi)的二極管間的連接都是行共陽，列共陰。本實(shí)驗(yàn)采用共陰，當(dāng)二極管的共陽極為高電平，共陰極為低電平時(shí)，所接點(diǎn)發(fā)光；反之處于截止?fàn)顟B(tài)，不放光。本實(shí)驗(yàn)采取行掃描方式，用列給文字信息，利用周期為1s的脈沖來控制所顯示的字。本設(shè)計(jì)由32進(jìn)制計(jì)數(shù)器(count32)，16進(jìn)制計(jì)數(shù)器(count16)，行驅(qū)動(dòng)（xianshi）和列驅(qū)動(dòng)(rowcon)組成。圖2-1 1616點(diǎn)陣原理圖第三章 系統(tǒng)子程序設(shè)計(jì)3.1 32進(jìn)制計(jì)數(shù)器設(shè)計(jì) count32.vhd是32進(jìn)制的計(jì)數(shù)器，其每

4、計(jì)一次數(shù)，輸出一個(gè)字。例如當(dāng)計(jì)數(shù)為“00000b”時(shí)顯示“江”，當(dāng)計(jì)數(shù)為“00001b”時(shí)顯示“西”。給其脈沖周期為1s。其描述如下：library ieee;use ieee.std_logic_1164.all;use ieee.std_logic_unsigned.all;entity count32 isport( clk1: in std_logic;qout : out std_logic_vector(4 downto 0);end entity count32;architecture behv of count32 issignal cqi : std_logic_vecto

5、r(4 downto 0);beginprocess(clk1)beginif (clk1event and clk1=1) thencqi=cqi+1;end if;qout=cqi;end process;end architecture behv;圖3-1 cuont32.vhd仿真波形圖從上圖中可以看出，本模塊是32進(jìn)制的計(jì)數(shù)器，當(dāng)clk1給予脈沖時(shí)輸出為前一個(gè)數(shù)值加1，例如：在31.46ms前輸出為00110b，在這個(gè)時(shí)刻clk1給予觸發(fā)脈沖，31.46ms后的輸出為00111b?？梢钥闯鲈撃K滿足設(shè)計(jì)要求。3.2 16進(jìn)制計(jì)數(shù)器設(shè)計(jì)count16.vhd是16進(jìn)制的計(jì)數(shù)器，其輸出端

6、控制行和列驅(qū)動(dòng)控制器的輸出數(shù)據(jù)；其描述如下：library ieee;use ieee.std_logic_1164.all;use ieee.std_logic_unsigned.all;entity count16 isport( clk : in std_logic;qout : out std_logic_vector(3 downto 0);end entity count16;architecture behv of count16 issignal cqi : std_logic_vector(3 downto 0);beginprocess(clk)beginif (clkev

7、ent and clk=1) thencqi=cqi+1;end if;qout row row row row row row row row row row row row row row row row rowcase wei is when 0000 =b:=0100000000000000; when 0001 =b:=0011000000001000; when 0010 =b:=0001011111111100; when 0011 =b:=0000000001000000; when 0100 =b:=1000000001000000; when 0101 =b:=011000

8、0001000000; when 0110 =b:=0010000001000000; when 0111 =b:=0000100001000000; when 1000 =b:=0001000001000000; when 1001 =b:=0010000001000000; when 1010 =b:=1110000001000000; when 1011 =b:=0010000001000000; when 1100 =b:=0010000001001000; when 1101 =b:=0010111111111100; when 1110 =b:=0010000000000000;

9、when 1111 =b:=0010000000000000; when others=null; end case;when 00001=case wei is when 0000 =b:=0000000000000000; when 0001 =b:=0000000000000100; when 0010 =b:=1111111111111110; when 0011 =b:=0000010010000000; when 0100 =b:=0000010010000000; when 0101 =b:=0000010010000100; when 0110 =b:=011111111111

10、1110; when 0111 =b:=0100010001000100; when 1000 =b:=0100010001000100; when 1001 =b:=0100010001000100; when 1010 =b:=0100010001000100; when 1011 =b:=0100100000110100; when 1100 =b:=0101000000000100; when 1101 =b:=0100000000000100; when 1110 =b:=0111111111111100; when 1111 =b:=0100000000000100; when o

11、thers=null; end case;when 00010=case wei is when 0000 =b:=0000000000001000; when 0001 =b:=0000011111111000; when 0010 =b:=1111101001001000; when 0011 =b:=0010001001001000; when 0100 =b:=0010011111111100; when 0101 =b:=0010001001001000; when 0110 =b:=1111101001001000; when 0111 =b:=0010001111111000;

12、when 1000 =b:=0010000001000000; when 1001 =b:=0010000001010000; when 1010 =b:=0010001111111000; when 1011 =b:=0011110001000000; when 1100 =b:=1110000001000000; when 1101 =b:=0100000001000100; when 1110 =b:=0000111111111110; when 1111 =b:=0000000000000000; when others=null; end case;when 00011=case w

13、ei is when 0000 =b:=0000000000000000; when 0001 =b:=0000000000001000; when 0010 =b:=0111111111111100; when 0011 =b:=0000000100000000; when 0100 =b:=0000000100000000; when 0101 =b:=0000000100000000; when 0110 =b:=0000000100000000; when 0111 =b:=0000000100000000; when 1000 =b:=0000000100000000; when 1

14、001 =b:=0000000100000000; when 1010 =b:=0000000100000000; when 1011 =b:=0000000100000000; when 1100 =b:=0000000100000100; when 1101 =b:=1111111111111110; when 1110 =b:=0000000000000000; when 1111 =b:=0000000000000000; when others=null; end case;when 00100=case wei is when 0000 =b:=0000000100000000;

15、when 0001 =b:=0000000100000000; when 0010 =b:=0000000100000000; when 0011 =b:=0000000100000000; when 0100 =b:=0000000100000100; when 0101 =b:=1111111111111110; when 0110 =b:=0000000100000000; when 0111 =b:=0000001010000000; when 1000 =b:=0000001010000000; when 1001 =b:=0000001010000000; when 1010 =b

16、:=0000001001000000; when 1011 =b:=0000001000010000; when 1100 =b:=0000100000010000; when 1101 =b:=0001000000001110; when 1110 =b:=0110000000000100; when 1111 =b:=0000000000000000; when others=null; end case;when 00101=case wei is when 0000 =b:=0010001000001000; when 0001 =b:=0001000100001000; when 0

17、010 =b:=0000000000000000; when 0011 =b:=0000000000100000; when 0100 =b:=0111111111111110; when 0101 =b:=0100000000000010; when 0110 =b:=1000000000000100; when 0111 =b:=0001111111100000; when 1000 =b:=0000000001000000; when 1001 =b:=0000000110000100; when 1010 =b:=1111111111111110; when 1011 =b:=0000

18、000100000000; when 1100 =b:=0000000100000000; when 1101 =b:=0000000100000000; when 1110 =b:=0000010100000000; when 1111 =b:=0000001000000000; when others=null; end case;when 00110=case wei is when 0000 =b:=0000001000000000; when 0001 =b:=0000000100000100; when 0010 =b:=0011111111111110; when 0011 =b

19、:=0010000000000000; when 0100 =b:=0010000100000100; when 0101 =b:=0010100010000100; when 0110 =b:=0010010010000100; when 0111 =b:=0010010001001000; when 1000 =b:=0010001001001000; when 1001 =b:=0010001001001000; when 1010 =b:=0010001000010000; when 1011 =b:=0010001000010000; when 1100 =b:=0010000000

20、100000; when 1101 =b:=0100000001000100; when 1110 =b:=1001111111111110; when 1111 =b:=1001111111111110; when others=null; end case;when 00111=case wei is when 0000 =b:=0000000000001000; when 0001 =b:=0011111111111100; when 0010 =b:=0010000100001000; when 0011 =b:=0010000100001000; when 0100 =b:=0010

21、000100001000; when 0101 =b:=0011111111111000; when 0110 =b:=0010000100001000; when 0111 =b:=0010000100001000; when 1000 =b:=0010000100001000; when 1001 =b:=0011111111111000; when 1010 =b:=0010000100001000; when 1011 =b:=0010000100001000; when 1100 =b:=0010000100001000; when 1101 =b:=0100000100001000

22、; when 1110 =b:=0100000100101111; when 1111 =b:=1000000000010000; when others=null; end case; when 01000=case wei is when 0000 =b:=0000010000010000; when 0001 =b:=0000111000010000; when 0010 =b:=1111100010010000; when 0011 =b:=0000100001010000; when 0100 =b:=0000100000010000; when 0101 =b:=111111101

23、0010000; when 0110 =b:=0000100001010000; when 0111 =b:=0001110000010100; when 1000 =b:=0001101000011110; when 1001 =b:=0010100111110000; when 1010 =b:=0010100000010000; when 1011 =b:=0100100000010000; when 1100 =b:=1000100000010000; when 1101 =b:=0000100000010000; when 1110 =b:=0000100000010000; whe

24、n 1111 =b:=0000100000010000; when others=null; end case; when01001=case wei is when 0000 =b:=0010001000001000; when 0001 =b:=0001000100001000; when 0010 =b:=0001000100010000; when 0011 =b:=0000000000100000; when 0100 =b:=0111111111111110; when 0101 =b:=0100000000000010; when 0110 =b:=100000000000010

25、0; when 0111 =b:=0001111111100000; when 1000 =b:=0000000001000000; when 1001 =b:=0000000110000100; when 1010 =b:=1111111111111110; when 1011 =b:=0000000100000000; when 1100 =b:=0000000100000000; when 1101 =b:=0000000100000000; when 1110 =b:=0000010100000000; when 1111 =b:=0000001000000000; when othe

26、rs=null; end case; when 01010=case wei is when 0000 =b:=0010001000001000; when 0001 =b:=0001000100001000; when 0010 =b:=0001000100010000; when 0011 =b:=0000000000100000; when 0100 =b:=0111111111111110; when 0101 =b:=0100000000000010; when 0110 =b:=1000000000000100; when 0111 =b:=0001111111100000; wh

27、en 1000 =b:=0000000001000000; when 1001 =b:=0000000110000100; when 1010 =b:=1111111111111110; when 1011 =b:=0000000100000000; when 1100 =b:=0000000100000000; when 1101 =b:=0000000100000000; when 1110 =b:=0000010100000000; when 1111 =b:=0000001000000000; when others=null; end case;when 01011=case wei

28、 is when 0000 =b:=0000000010000000; when 0001 =b:=0111100001000000; when 0010 =b:=0100111111111110; when 0011 =b:=0101010000000010; when 0100 =b:=0101100000010100; when 0101 =b:=0110001111111000; when 0110 =b:=0101000000000000; when 0111 =b:=0100100000001000; when 1000 =b:=0100111111111100; when 100

29、1 =b:=0100100010100000; when 1010 =b:=0110100010100000; when 1011 =b:=0101000010100000; when 1100 =b:=0100000100100010; when 1101 =b:=0100000100100010; when 1110 =b:=0100001000011110; when 1111 =b:=0100110000000000; when others=null; end case; when01100=case wei is when 0000 =b:=0000000010000000; wh

30、en 0001 =b:=0000000010000000; when 0010 =b:=1111110010000000; when 0011 =b:=0000010011111100; when 0100 =b:=0100010100000100; when 0101 =b:=0100011001001000; when 0110 =b:=0010100001000000; when 0111 =b:=0010100001000000; when 1000 =b:=0001000001000000; when 1001 =b:=0010100001000000; when 1010 =b:=

31、0010010010100000; when 1011 =b:=0100010010100000; when 1100 =b:=1000000100010000; when 1101 =b:=0000000100001000; when 1110 =b:=0000001000001110; when 1111 =b:=0000110000000100; when others=null; end case; when01101=case wei is when 0000 =b:=0000000000000000; when 0001 =b:=0100000110000100; when 001

32、0 =b:=0010011001111110; when 0011 =b:=0001010001000100; when 0100 =b:=0000010001000100; when 0101 =b:=0000010001000100; when 0110 =b:=1111010001000100; when 0111 =b:=0001010011000100; when 1000 =b:=0001010101000100; when 1001 =b:=0001011001010100; when 1010 =b:=0001010001001000; when 1011 =b:=000100

33、0001000000; when 1100 =b:=0001000001000000; when 1101 =b:=0010100001000110; when 1110 =b:=0100011111111100; when 1111 =b:=0000000000000000; when others=null; end case; when 01110=case wei is when 0000 =b:=0000100100000000; when 0001 =b:=0000100100000000; when 0010 =b:=0001001111111100; when 0011 =b:=0001001000001000; when 0100 =b:=0011010001001000; when 0101 =b:=0101100101000000; when 0110 =b:=1001000101010000; when 0111 =b:=0001001001001100;