EDA综合实验-交通灯

学生实验报告系别电子信息学院课程名称《EDA综合实验》班级10通信A班实验名称交通灯控制器的设计姓名张炘实验时间2012年11月27日学号2010010101073指导教师王红航报告内容一、实验目的和任务本次实验的目的和任务是：1熟悉QUARTUES软件的使用及操作页面。2.设计一个交通灯控制器。3FPGA芯片的选择和对引脚的软件选择。4对实验箱的简单操作。二、实验原理介绍本次交通灯设计功能较简单，1.亮红绿黄灯。2.数码管倒计时。三、设计代码（或原理图）、仿真波形及分析moduletraffic_1(clk,rst,a_light,a_su);inputclk,rst;outputreg[2:0]a_light;outputreg[5:0]a_su;reg[2:0]a_red,a_yellow,a_green;reg[5:0]su_red,su_yellow,su_green;reg[3:0]a_num;regtemp;always@(rst)begin if(!rst) begin a_red<=3'b001; a_yellow<=3'b010; a_green<=3'b100; su_red<=6'd32; su_yellow<=6'd5; su_green<=6'd27; endendalways@(posedgeclk)begin if(rst)//gaodianpinyouyong begin if(!temp) begin temp<=1'b1; case(a_num) 0:begina_light<=a_red; a_su<=su_red; a_num<=4'd1; end 1:begina_light<=a_green; a_su<=su_green; a_num<=4'd2; end 2:begina_light<=a_yellow; a_su<=su_yellow; a_num<=4'd0; end endcase end else begin a_su<=a_su-1'b1; if(a_su==6'd2)//chichu6'd2shiyingweijishushi0kaishi temp<=1'd0; end end else begin a_light<=a_red; a_su<=su_red; temp<=1'b0; a_num<=4'd0; endendendmodule以上是一条道路A的红绿灯的显示，用case语句实现红、黄、绿灯的循环变换，以temp变量判断是否变换等色，以下是仿真时的时序图：moduleBCD(timer,timer_1);input[5:0]timer;outputreg[7:0]timer_1;always@(timer)beginif(timer>59)timer_1<=timer+8'b00100100;//加36elseif(timer>49)timer_1<=timer+8'b00011110;//加30elseif(timer>39)timer_1<=timer+8'b00011000;//加24elseif(timer>29)timer_1<=timer+8'b00010010;//加18elseif(timer>19)timer_1<=timer+8'b00001100;//加12elseif(timer>9)timer_1<=timer+8'b00000110;//加6elsetimer_1<=timer;endendmodule我们数码管显示的是BCD码对应的数字，所以我们输出前要把二进制变为BCD码形式，其仿真时序图如下：moduletraffic_3(clk,rst,b_light,b_su);inputclk,rst;outputreg[2:0]b_light;outputreg[5:0]b_su;reg[2:0]b_red,b_yellow,b_green;reg[5:0]su_red,su_yellow,su_green;reg[3:0]b_num;regtemp;always@(rst)begin if(!rst) begin b_red<=3'b001; b_yellow<=3'b010; b_green<=3'b100; su_red<=6'd32; su_yellow<=6'd5; su_green<=6'd27; endendalways@(posedgeclk)begin if(rst)//gaodianpinyouyong begin if(!temp) begin temp<=1'b1; case(b_num) 0:beginb_light<=b_green; b_su<=su_green; b_num<=4'd1; end 1:beginb_light<=b_red; b_su<=su_red; b_num<=4'd2; end 2:beginb_light<=b_yellow; b_su<=su_yellow; b_num<=4'd0; end endcase end else begin b_su<=b_su-1'b1; if(b_su==6'd2)//chichu6'd2shiyingweijishushi0kaishi temp<=1'd0; end end else begin b_light<=b_red; b_su<=su_red; temp<=1'b0; b_num<=4'd0; endendendmodule以上是另外一条道路B的红绿灯变换程序，其亮灯时序与A的亮灯相反，同时也是需要BCD转换与上面BCD转换一样；以下是整个交通灯变换的原理图：四、实验结论与心得本次实验充分了解了简单交通灯的基本设计概念，对软件、语言的使用更加熟悉，但对状态机设计还有待学习。五、实