交通燈控制器的設(shè)計(jì)

1、交通燈控制器的設(shè)計(jì)一，實(shí)驗(yàn)?zāi)康模?，掌握用狀態(tài)機(jī)進(jìn)行數(shù)字系統(tǒng)設(shè)計(jì)的基本方法。1,，設(shè)計(jì)一個(gè)交通燈控制器，并在實(shí)驗(yàn)箱上做演示。二，實(shí)驗(yàn)器材：裝有quartus 2軟件的電腦一臺(tái)，eda教學(xué)實(shí)驗(yàn)系統(tǒng)一臺(tái)，下載電纜一根。三，實(shí)驗(yàn)原理與內(nèi)容： 利用verilog hdl語(yǔ)言設(shè)計(jì)一個(gè)交通燈控制器模塊，a方向和b方向各設(shè)紅（red），黃（yellow）,綠（green）和左轉(zhuǎn)（left）（用8個(gè)紅led中的兩個(gè)代替）四盞燈。四種燈按順序依次亮滅，并能將燈亮的時(shí)間以倒計(jì)時(shí)的形式顯示出來(lái)。紅燈綠燈黃燈左轉(zhuǎn)a方向55秒40秒5秒15秒b方向65秒30秒5秒15秒設(shè)計(jì)思路： 利用一個(gè)狀態(tài)機(jī)，來(lái)實(shí)現(xiàn)單一方向上的亮燈

2、順序；利用一個(gè)2位bcd碼減計(jì)數(shù)器，來(lái)實(shí)現(xiàn)單一方向上亮燈時(shí)得到及時(shí)控制器。四，硬件連接圖：五，程序：/*分頻模塊*/module fp(clk,newclk); /1khz時(shí)鐘信號(hào)clk，1hz計(jì)時(shí)信號(hào)clkoutinput clk; output newclk; reg newclk; reg10:0 jnb; always(posedge clk) begin if(jnb=1000/2) begin jnb=0; newclk=newclk; end else jnb=jnb+1; endendmodule/*交通燈模塊*/module traffic(clk,en,lampa,lamp

3、b,acount,bcount);input clk,en;output 3:0 lampa,lampb;output 7:0 acount,bcount;reg tempa,tempb;reg 2:0 counta,countb;reg 3:0 lampa,lampb;reg 7:0 ared ,ayellow,agreen,aleft,bred,byellow,bgreen,bleft;reg 7:0 numa,numb;always (en)if (!en) /設(shè)置各燈的計(jì)數(shù)器預(yù)置數(shù)beginared =8d55;ayellow =8d5;agreen =8d40;aleft =8d15

4、;bred =8d65;byellow =8d5;bgreen =8d30;bleft =8d15;endassign acount=numa; assign bcount=numb;always (posedge clk) /控制a方向的燈 begin if(en) begin if(!tempa) begin tempa=1; case(counta) /控制亮燈順序 0:begin numa=agreen; lampa=2; counta=1; end1:begin numa=ayellow; lampa=4; counta=2; end 2:begin numa=aleft; lamp

5、a=1; counta=3; end 3:begin numa=ayellow; lampa=4; counta=4; end 4:begin numa=ared; lampa=8; counta=0; end default:lampa1) if(numa3:0=0) begin numa3:0=4b1001; numa7:4=numa7:4-1; endelse numa3:0=numa3:0-1; if(numa=2) tempa=0; end end else begin lampa=4b1000; counta=0; tempa=0; end end always (posedge

6、clk) /控制a方向的燈 begin if(en) begin if(!tempb) begin tempb=1; case(countb) 0:begin numb=bgreen; lampb=8; countb=1; end1:begin numb=byellow; lampb=2; countb=2; end 2:begin numb=bleft; lampb=4; countb=3; end 3:begin numb=byellow; lampb=1; countb=4; end 4:begin numb=bred; lampb=4; countb=0; end default:la

7、mpb1) if(!numb3:0) begin numb3:0=9; numb7:4=numb7:4-1; end else numb3:0=numb3:0-1; if(numb=2) tempb=0; end end else begin lampb=4b1000; countb=0; tempb=0; end endendmodule/*顯示程序*/module led(clk1k,datain1,datain2,dataledout,ledsel);input 7:0 datain1; input 7:0datain2; input clk1k; reg 1:0cout; output

8、 reg 2:0ledsel;output 7:0dataledout;reg 7:0dataledout;always(posedge clk1k)begin case(cout) 2b00: begin if(datain1&8b11110000)=8b01100000) /show data 6 begin dataledout=8b10111110; ledsel=3b111; end else if(datain1&8b11110000)=8b01010000) /show data 5 begin dataledout=8b10110110; ledsel=3b111; end e

9、lse if(datain1&8b11110000)=8b01000000) /show data 4 begin dataledout=8b10111110; ledsel=3b111; end else if(datain1&8b11110000)=8b00110000) /show data 3 begin dataledout=8b11110010; ledsel=3b111; end else if(datain1&8b11110000)=8b00100000) /show data 2 begin dataledout=8b01100000; ledsel=3b111; end e

10、lse if(datain1&8b11110000)=8b00010000) /show data 1 begin dataledout=8b01100000; ledsel=3b111; end else if(datain1&8b11110000)=8b00000000) /show data 0 begin dataledout=8b11111100; ledsel=3b111; end else begin dataledout=8b00000000; ledsel=3b111; end cout=2b01; end 2b01: begin if(datain1&8b00001111)

11、=8b00001001) /show data 9 begin dataledout=8b11110110; ledsel=3b110; end else if (datain1&8b00001111)=8b00001000) /show data 8 begin dataledout=8b11111110; ledsel=3b110; end else if (datain1&8b00001111)=8b00000111) /show data 7 begin dataledout=8b11100000; ledsel=3b110; end else if (datain1&8b000011

12、11)=8b00000110) /show data 6 begin dataledout=8b10111110; ledsel=3b110; end else if(datain1&8b00001111)=8b00000101) /show data 5 begin dataledout=8b10110110; ledsel=3b110; end else if(datain1&8b00001111)=8b00000100) /show data 4 begin dataledout=8b10111110; ledsel=3b110; end else if(datain1&8b000011

13、11)=8b00000011) /show data 3 begin dataledout=8b11110010; ledsel=3b110; end else if(datain1&8b00001111)=8b00000010) /show data 2 begin dataledout=8b01100000; ledsel=3b110; end else if(datain1&8b00001111)=8b00000001) /show data 1 begin dataledout=8b01100000; ledsel=3b110; end else if(datain1&8b000011

14、11)=8b00000000) /show data 0 begin dataledout=8b11111100; ledsel=3b110; end else begin dataledout=8b00000000; ledsel=3b110; end cout=2b11; end 2b11: begin if(datain2&8b11110000)=8b01010000) /show data 5 begin dataledout=8b10110110; ledsel=3b001; end else if(datain2&8b11110000)=8b01000000) /show data

15、 4 begin dataledout=8b10111110; ledsel=3b001; end else if(datain2&8b11110000)=8b00110000) /show data 3 begin dataledout=8b11110010; ledsel=3b001; end else if(datain2&8b11110000)=8b00100000) /show data 2 begin dataledout=8b01100000; ledsel=3b001; end else if(datain2&8b11110000)=8b00010000) /show data

16、 1 begin dataledout=8b01100000; ledsel=3b001; end else if(datain2&8b11110000)=8b00000000) /show data 0 begin dataledout=8b11111100; ledsel=3b001; end else begin dataledout=8b00000000; ledsel=3b001; end cout=2b10; end 2b10: begin if(datain2&8b00001111)=8b00001001) /show data 9 begin dataledout=8b1111

17、0110; ledsel=3b000; end else if (datain2&8b00001111)=8b00001000) /show data 8 begin dataledout=8b11111110; ledsel=3b000; end else if (datain2&8b00001111)=8b00000111) /show data 7 begin dataledout=8b11100000; ledsel=3b000; end else if (datain2&8b00001111)=8b00000110) /show data 6 begin dataledout=8b1

18、0111110; ledsel=3b000; end else if(datain2&8b00001111)=8b00000101) /show data 5 begin dataledout=8b10110110; ledsel=3b000; end else if(datain2&8b00001111)=8b00000100) /show data 4 begin dataledout=8b10111110; ledsel=3b000; end else if(datain2&8b00001111)=8b00000011) /show data 3 begin dataledout=8b11110010; ledsel=3b000; end else if(datain2&8b00001111)=8b00000010) /show data 2 begin dataledout=8b01100000; ledsel=3b000; end else if(datain2&