交通灯控制器的设计.doc

交通灯控制器的设计一，实验目的：1，掌握用状态机进行数字系统设计的基本方法。1,，设计一个交通灯控制器，并在实验箱上做演示。二，实验器材：装有quartus 2软件的电脑一台，eda教学实验系统一台，下载电缆一根。三，实验原理与内容： 利用verilog hdl语言设计一个交通灯控制器模块，a方向和b方向各设红（red），黄（yellow）,绿（green）和左转（left）（用8个红led中的两个代替）四盏灯。四种灯按顺序依次亮灭，并能将灯亮的时间以倒计时的形式显示出来。红灯绿灯黄灯左转a方向55秒40秒5秒15秒b方向65秒30秒5秒15秒设计思路： 利用一个状态机，来实现单一方向上的亮灯顺序；利用一个2位bcd码减计数器，来实现单一方向上亮灯时得到及时控制器。四，硬件连接图：五，程序：/*分频模块*/module fp(clk,newclk); /1khz时钟信号clk，1hz计时信号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/*交通灯模块*/module traffic(clk,en,lampa,lampb,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) /设置各灯的计数器预置数beginared =8d55;ayellow =8d5;agreen =8d40;aleft =8d15;bred =8d65;byellow =8d5;bgreen =8d30;bleft =8d15;endassign acount=numa; assign bcount=numb;always (posedge clk) /控制a方向的灯 begin if(en) begin if(!tempa) begin tempa=1; case(counta) /控制亮灯顺序 0:begin numa=agreen; lampa=2; counta=1; end1:begin numa=ayellow; lampa=4; counta=2; end 2:begin numa=aleft; lampa=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 clk) /控制a方向的灯 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:lampb1) 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/*显示程序*/module led(clk1k,datain1,datain2,dataledout,ledsel);input 7:0 datain1; input 7:0datain2; input clk1k; reg 1:0cout; output 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 else 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 else 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)=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&8b00001111)=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&8b00001111)=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&8b00001111)=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 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 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=8b11110110; 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=8b10111110; 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&