用verilog语言,将十字路通灯改写丁字路通灯
时间: 2023-10-05 22:06:40 浏览: 108
以下是将十字路通灯改写为丁字路通灯的Verilog代码:
```
module traffic_light(
input clk, // 时钟信号
input reset, // 复位信号
output reg red, // 红灯
output reg yellow, // 黄灯
output reg green, // 绿灯
output reg pedestrian_red, // 行人红灯
output reg pedestrian_green // 行人绿灯
);
reg [1:0] state; // 状态寄存器
// 定义状态常量
localparam STOP = 2'b00;
localparam READY = 2'b01;
localparam GO = 2'b10;
localparam PEDESTRIAN = 2'b11;
// 状态转移逻辑
always @(posedge clk, negedge reset) begin
if (reset) begin
state <= STOP;
end else begin
case (state)
STOP: begin
state <= READY;
end
READY: begin
state <= GO;
end
GO: begin
state <= PEDESTRIAN;
end
PEDESTRIAN: begin
state <= STOP;
end
endcase
end
end
// 灯光输出逻辑
always @(state) begin
case (state)
STOP: begin
red <= 1;
yellow <= 0;
green <= 0;
pedestrian_red <= 0;
pedestrian_green <= 1;
end
READY: begin
red <= 1;
yellow <= 1;
green <= 0;
pedestrian_red <= 0;
pedestrian_green <= 1;
end
GO: begin
red <= 0;
yellow <= 0;
green <= 1;
pedestrian_red <= 1;
pedestrian_green <= 0;
end
PEDESTRIAN: begin
red <= 0;
yellow <= 0;
green <= 0;
pedestrian_red <= 1;
pedestrian_green <= 0;
end
endcase
end
endmodule
```
在这个版本的代码中,我们将原来的十字路口变成了丁字路口,因此行人过街的时间变成了信号灯绿灯时刻。在READY状态下,红灯和黄灯同时亮起,表示车辆需要停车等待;在GO状态下,绿灯亮起,表示车辆可以通行,而行人红灯亮起,表示行人需要等待;在PEDESTRIAN状态下,行人绿灯亮起,表示行人可以过街,而车辆红灯亮起,表示车辆需要停车等待。
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