关于交通灯实验报告.docxVIP

交通灯实验报告 班级A0903 姓名朱亚平 学号4200109320082 代码 ∥traf文件 E module traffic(rst, clk, red_light, green_light, yellow_light red counter==59 input clk;s;∥定义输入变量时钟信号clk,复位信号rst ∥定义输出信号,红灯,黄灯,绿灯 output red_light; 123 output green_light; DUD2kD4 5100 output yellow_GREENlightS reg red light reg green light reg yellow_light; regl:0 currentstate, nextstate;∥定义两种状态:当前状态和下一状态 yellow light=l∥定义6位红、黄、绿计数器 55 reg[5: 0)red_counter; reen counter==54 55 reg[5: 01 green_counter; YELLOW S reg[5: 0] yellow_counter parameter RED S=3b000 parameter GREEN_$=3b001; parameter YELLOW_S=3b010 ∥异步复绿位灯,当时钟的上升延和复位信号的上升延有效,采用非阻塞赋值 黄灯 时间 always @(posedge clk or posedge rst) 0 0  if(rst∥当rst=1时有效 red counter=6 b0: 123456题 ∥判断当前状态为红灯时,红灯计数器加1,否则为0 else if(currentstate==RED_S) 59 red counter=red counter+6bl else red counter=6DiD b0: always @(posedge clk or posedge rst) rs green0 counter=6b0 ∥判断当前状态为绿灯时,绿灯计数器加1,否则为0 else if(currentstate==GREEN_S) green counter=green counter+6b1 100 110u 1130 else green counter=6b0 always @(posedge clk or posedge rst 0 4 if(rst) yellow_counter=4b0; ∥判断当前状态为黄灯时,黄灯计数器加1,否则为0 Ise if(currentstate==YELLOW_S) yellow counter=yellow counter+6b1 Ise yellow_counter=6b0; 区E区 E区 E 区 HB  ∥开始只要复位即变成红灯状态,否则是下一个状态 always@(posedge clk or posedge rst) if(rst currentstate=RED S else currentstate=nextstate always @(rst or currentstate or green_counter or red_counter) if(rst) nextstate=RED S case(currentstate) RED S f(red counter==59) nextstate=GREEN S else nextstate=RED S GREEN S: if(green_counter==54)nextstate=YELLOW_S; else nextstate=GREEN S YELLOW S if(yellow_counter==4)nextstate=RED_S; else nextstate=YELLOW S default. nextstate=RED S endcase al ways@(currentstate) if(currentstate==RED_S) red light=lbl else red light=l b0: always@(currentstate) if(currentstate==YELLOWS) yellow_light=lbl dIse yellow light=lb0: endmodule 二、功能仿真测试文件 ∥交通灯测试代码 test traffic. v module traffic testtrafic reg rst reg c wire red light; wire green_light, wire yellow_light traffic tra( rst(rst), clk(clk) red light(red li