基于VerilogHDL的通行时间可变的交通灯控制器

1、百度文库通行时间可变的交通灯控制器设计moduletr1(ng,clk,reset,resets,emergency,lighta,lightb,seg,select);inputng,clk,reset,emergency,resets;output6:0seg;显示用的output3:0lighta,lightb;/a是主干道，b是支干道output3:0select;/选择那一个管子进行显示regclk1,clk2;clk1要5HZclk2要几千HZreg3:0select;regtim1,tim2;这是看你的等有没有变过颜色的控制信号reg1:0cont;reg2:0state1,st

2、ate2,ste;两个控制颜色变化状态的信号。reg3:0lighta,lightb;/a是主干道，b是支干道reg3:0num;/译码器是根据这个东西来译码的reg35:0fout;reg6:0seg;显示reg7:0numa,numb;reg7:0red1,red2,green1,green2,yellow1,yellow2,left1,left2;always(ng)if(!ng)begin设置计数初值green1<=8'b00110000;30Sred1<=8'b01010001;51S/yellow1<=8'b00000011;3s/left

3、1<=8'b00010101;/15S百度文库green2<=8'b00110000;/30Sred2<=8'b01010001;/51Syellow2<=8'b00000011;/3Sleft2<=8'b00010101;/15Sendalways(posedgeclk)beginif(fout=36'b11)fout<=0;elsebeginfout<=fout+1;clk1=fout23;5HZclk2=fout13;几千HZendendalways(posedgeclk1)beginif(rese

4、t)/复位与特殊情况控制这是主干道的复位beginlighta<=4'b1000;/lighta是主干道的交通灯，lightb是支干道的交通灯，1000是红灯，0100是直行绿灯,0010是黄灯，0001是左转绿灯numa<=red1;主干道的数码管从红灯开始记state1<=0;/这时候灯变化的控制信号为0end/elseif(emergency)/紧急情况百度文库beginlighta<=4'b1000;/主干道红了numa<=red1;/计时也从红灯记end/elseif(ng)/这下开始正常工作了begin使能有效开始控制计数if(!tim

5、1)/你有没有变过颜色啊？没有？那开始变颜色吧。begin主干道交通灯点亮控制tim1<=1;主干道的灯的开关，行了，我变过了。case(state1)/state1是用来控制主干道亮灯的各个状态的。/1000(8)是红灯，0100(4)是直行绿灯，0010(2)是黄灯，0001(1)是左转绿灯3'b000:beginnuma<=green1;lighta<=4;state1<=3'b001;end/直行绿3'b001:beginnuma<=yellow1;lighta<=2;state1<=3'b010;end/黄3&

6、#39;b010:beginnuma<=left1;lighta<=1;state1<=3'b011;end/左转绿3'b011:beginnuma<=yellow1;lighta<=2;state1<=3'b100;end/黄3'b100:beginnuma<=red1;lighta<=8;state1<=3'b000;end/红default:lighta<=8;/接二极管正极，负极接地endcaseend,/else/tm1=1,我变过颜色了，可以开始计数了。begin倒数计时if(num

7、a>0)if(numa3:0=0)/begin/numa3:0<=4'b1001;百度文库numa7:4<=numa7:4-1;end/elsenuma3:0<=numa3:0-1;if(numa=1)tim1<=0;好了，差不多计完了，再让我变一次吧。endendelse如果电路没有启动beginlighta<=4'b0100;/默认为直行绿灯numa=0;默认计数为0tim1<=0;/默认我没有变过颜色endendalways(posedgeclk1)/下面就和主干道的一样了beginif(reset)/复位与特殊情况控制begin

8、lightb<=4'b1000;numb<=red2;state2<=0;end、/elseif(emergency)/begin/lightb<=4'b1000;numb<=red2;百度文库endelseif(ng)beginif(!tim2)begintim2<=1;state2<=1;endstate2<=2;endstate2<=3;endstate2<=4;endstate2<=0;endcase(state2)0:beginnumb<=red2;lightb<=8;1:beginnumb

9、<=green2;lightb<=4;2:beginnumb<=yellow2;lightb<=2;3:beginnumb<=left2;lightb<=1;4:beginnumb<=yellow2;lightb<=2;default:lightb<=8;endcaseendelsebegin倒数计时if(numb>0)if(numb3:0=0)beginnumb3:0<=4'b1001;numb7:4<=numb7:4-1;endelsenumb3:0<=numb3:0-1;if(numb=1)tim2&l

10、t;=0;end百度文库endelsebegin/tim2<=0;state2<=0;lightb<=4'b0100;endendalways(posedgeclk2)begin/数码管扫描if(resets)begincont=0;select=4'b1111;endelsebegincase(cont)2'b00:beginnum<=numa3:0;select<=4'b1101;cont<=cont+1;end2'b01:beginnum<=numa7:4;select<=4'b1011;co

11、nt<=cont+1;end2'b10:beginnum<=numb3:0;select<=4'b0111;cont<=cont+1;end2'b11:beginnum<=numb7:4;select<=4'b1110;cont<=cont+1;endendcase百度文库endendalways(posedgeclk2)begin/数码管译码显示case(num)4'b0000:seg<=7'b0111111;/04'b0001:seg<=7'b0000110;/14'b0010:seg<=7'b1011011;/24'b0011:seg<=7'b1001111;/34'b0100:seg<=7'b1100110;/44'b0101:seg<=7'b1101101;/54'b0110:seg<