Question

如何用verilog写10个流水灯

10个灯能依次亮，第10个灯亮完后再从第一个开始循环。

Answer 1

你好，下面是对应的代码，另外时钟的频率不要太高否者实际的那个灯可能会看不来。

module show(clk, reset, ledLight)

input clk,reset;

output [9:0] ledLight;

reg [10:0] count ;

always @(posdge clk or negedge reset)
if (!reset)
count =0;
else if (count ==10)
count =1;
else
count = count +1

assign ledLight[0] = (count ==1)? 1 :0;
assign ledLight[1] = (count ==2)? 1 :0;
assign ledLight[2] = (count ==3)? 1 :0;
assign ledLight[3] = (count ==4)? 1 :0;
assign ledLight[4] = (count ==5)? 1 :0;
assign ledLight[5] = (count ==6)? 1 :0;

assign ledLight[6] = (count ==7)? 1 :0;
assign ledLight[7] = (count ==8)? 1 :0;
assign ledLight[8] = (count ==9)? 1 :0;
assign ledLight[9] = (count ==10)? 1 :0;

endmodule