你可以用Verilog的计数器架构,帮我写一个十字信号灯吗,要求主体是计数器架构而且要用hdl
时间: 2024-03-17 10:40:06 浏览: 12
好的,我可以为您编写一个Verilog计数器架构的十字信号灯。以下是代码:
```verilog
module traffic_light (
input clk,
output reg red_n, green_n, yellow_n, red_w, green_w, yellow_w
);
reg [2:0] count;
reg [1:0] state;
parameter STOP = 2'b00;
parameter PROCEED = 2'b01;
parameter WARNING = 2'b10;
always @(posedge clk) begin
if (count == 3) begin
count <= 0;
case (state)
STOP: state <= PROCEED;
PROCEED: state <= WARNING;
WARNING: state <= STOP;
endcase
end else begin
count <= count + 1;
end
end
always @(*) begin
case (state)
STOP: begin
red_n = 0;
yellow_n = 0;
green_n = 1;
red_w = 1;
yellow_w = 0;
green_w = 0;
end
PROCEED: begin
red_n = 0;
yellow_n = 1;
green_n = 0;
red_w = 1;
yellow_w = 0;
green_w = 0;
end
WARNING: begin
red_n = 0;
yellow_n = 1;
green_n = 0;
red_w = 0;
yellow_w = 1;
green_w = 0;
end
endcase
end
endmodule
```
该模块具有六个输出:north方向的红、黄、绿灯(red_n、yellow_n、green_n)和west方向的红、黄、绿灯(red_w、yellow_w、green_w)。计数器每次增加一,当计数器达到3时,状态机会更新状态并重置计数器。根据不同的状态,输出不同的信号灯。