交通灯fpga-如何使用-有什么中文资料面包板社区

技术交流或者创业交流请关注我的微博： http://weibo.com/yc18 无论是课程设计，还是实验课，最好的方法就是在FPGA实验板上进行测试实验，这样可以看到实际交通灯的效果。对每一部分修改可以看到修改的效果，知道程序的修改带来的效果，那样比只看代码要理解的更深刻。在设计中最好是分模块设计，状态控制，脉冲发生等部分，对每个模块的调试书写时要特别注意每位的意义，尤其在软件绑定引脚时，每个输入输出信号的绑定，引脚的输入输出特性等，要与实际代码中的相符，在调试中不断发现问题，解决问题。下面附上代码部分：自制交通灯控制器加倒计时功能： module traffic(CLK,EN,LIGHT_A,LIGHT_B,TIME_A,TIME_B,a,b,c,d,e,f,g); output TIME_A,TIME_B; output LIGHT_A,LIGHT_B; output a,b,c,d,e,f,g; input CLK,EN; reg numa,numb; reg tempa,tempb; reg counta,countb; reg ared,ayellow,agreen,bred,byellow,bgreen; reg LIGHT_A,LIGHT_B; reg a,b,c,d,e,f,g; always @(EN) if(!EN) begin ared =8'd45; ayellow =8'd05; agreen =8'd40; bred =8'd45; byellow =8'd05; bgreen =8'd40; end assign TIME_A=numa; assign TIME_B=numb; always @(posedge CLK) begin if(EN) begin if(!tempa) begin tempa=1; case(counta) 0: begin numa=ared; LIGHT_A=4; counta=1; end 1: begin numa=agreen; LIGHT_A=1; counta=2; end 2:begin numa=ayellow; LIGHT_A=2;counta=0; end default: LIGHT_A=4; endcase end else begin if(numa=1) if(numa ==0) begin numa =9; numa =numa -1; end else numa =numa -1; if (numa==0) tempa=0; end end else begin LIGHT_A=4; counta=0; tempa=0; end end always @(posedge CLK) begin if (EN) begin if(!tempb) begin tempb=1; case (countb) 0: begin numb=bgreen; LIGHT_B=1; countb=1; end 1:begin numb=byellow; LIGHT_B=2; countb=2; end 2: begin numb=bred; LIGHT_B=4; countb=0; end default: LIGHT_B=1; endcase end else begin if(numb=1) if(!numb ) begin numb =9; numb =numb -1; end else numb =numb -1; if(numb==0) tempb=0; end end else begin LIGHT_B=4; tempb=0; countb=0; end end always @(TIME_A) begin case(TIME_A ) 4'd0:{a ,b ,c ,d ,e ,f ,g }=7'b1111110; 4'd1:{a ,b ,c ,d ,e ,f ,g }=7'b0110000; 4'd2:{a ,b ,c ,d ,e ,f ,g }=7'b1101101; 4'd3:{a ,b ,c ,d ,e ,f ,g }=7'b1111001; 4'd4:{a ,b ,c ,d ,e ,f ,g }=7'b0110011; 4'd5:{a ,b ,c ,d ,e ,f ,g }=7'b1011011; 4'd6:{a ,b ,c ,d ,e ,f ,g }=7'b1011111; 4'd7:{a ,b ,c ,d ,e ,f ,g }=7'b1110000; 4'd8:{a ,b ,c ,d ,e ,f ,g }=7'b1111111; 4'd9:{a ,b ,c ,d ,e ,f ,g }=7'b1111011; default:{a ,b ,c ,d ,e ,f ,g }=7'bx; endcase end always @(TIME_A) begin case(TIME_A ) 4'd0:{a ,b ,c ,d ,e ,f ,g }=7'b1111110; 4'd1:{a ,b ,c ,d ,e ,f ,g }=7'b0110000; 4'd2:{a ,b ,c ,d ,e ,f ,g }=7'b1101101; 4'd3:{a ,b ,c ,d ,e ,f ,g }=7'b1111001; 4'd4:{a ,b ,c ,d ,e ,f ,g }=7'b0110011; 4'd5:{a ,b ,c ,d ,e ,f ,g }=7'b1011011; 4'd6:{a ,b ,c ,d ,e ,f ,g }=7'b1011111; 4'd7:{a ,b ,c ,d ,e ,f ,g }=7'b1110000; 4'd8:{a ,b ,c ,d ,e ,f ,g }=7'b1111111; 4'd9:{a ,b ,c ,d ,e ,f ,g }=7'b1111011; default:{a ,b ,c ,d ,e ,f ,g }=7'bx; endcase end always @(TIME_B) begin case(TIME_B ) 4'd0:{a ,b ,c ,d ,e ,f ,g }=7'b1111110; 4'd1:{a ,b ,c ,d ,e ,f ,g }=7'b0110000; 4'd2:{a ,b ,c ,d ,e ,f ,g }=7'b1101101; 4'd3:{a ,b ,c ,d ,e ,f ,g }=7'b1111001; 4'd4:{a ,b ,c ,d ,e ,f ,g }=7'b0110011; 4'd5:{a ,b ,c ,d ,e ,f ,g }=7'b1011011; 4'd6:{a ,b ,c ,d ,e ,f ,g }=7'b1011111; 4'd7:{a ,b ,c ,d ,e ,f ,g }=7'b1110000; 4'd8:{a ,b ,c ,d ,e ,f ,g }=7'b1111111; 4'd9:{a ,b ,c ,d ,e ,f ,g }=7'b1111011; default:{a ,b ,c ,d ,e ,f ,g }=7'bx; endcase end always @(TIME_B) begin case(TIME_B ) 4'd0:{a ,b ,c ,d ,e ,f ,g }=7'b1111110; 4'd1:{a ,b ,c ,d ,e ,f ,g }=7'b0110000; 4'd2:{a ,b ,c ,d ,e ,f ,g }=7'b1101101; 4'd3:{a ,b ,c ,d ,e ,f ,g }=7'b1111001; 4'd4:{a ,b ,c ,d ,e ,f ,g }=7'b0110011; 4'd5:{a ,b ,c ,d ,e ,f ,g }=7'b1011011; 4'd6:{a ,b ,c ,d ,e ,f ,g }=7'b1011111; 4'd7:{a ,b ,c ,d ,e ,f ,g }=7'b1110000; 4'd8:{a ,b ,c ,d ,e ,f ,g }=7'b1111111; 4'd9:{a ,b ,c ,d ,e ,f ,g }=7'b1111011; default:{a ,b ,c ,d ,e ,f ,g }=7'bx; endcase end endmodule

标签: 交通灯fpga