verilog汽车尾灯
时间: 2023-12-21 10:05:33 浏览: 35
根据提供的引用内容,下面是一个Verilog实现汽车尾灯的例子:
```verilog
module CarTailLights(
input wire clk,
input wire reset,
input wire brake,
input wire left_turn,
input wire right_turn,
output wire [2:0] left_lights,
output wire [2:0] right_lights
);
reg [3:0] state;
always @(posedge clk or posedge reset) begin
if (reset) begin
state <= 4'b0000;
end else begin
case (state)
4'b0000: begin // IDLE state
if (brake) begin
state <= 4'b1111; // LR3 state
end else if (left_turn) begin
state <= 4'b0001; // L1 state
end else if (right_turn) begin
state <= 4'b1000; // R1 state
end
end
4'b0001: begin // L1 state
state <= 4'b0010; // L2 state
end
4'b0010: begin // L2 state
state <= 4'b0100; // L3 state
end
4'b0100: begin // L3 state
state <= 4'b0001; // L1 state
end
4'b1000: begin // R1 state
state <= 4'b0100; // R2 state
end
4'b0100: begin // R2 state
state <= 4'b0010; // R3 state
end
4'b0010: begin // R3 state
state <= 4'b1000; // R1 state
end
4'b1111: begin // LR3 state
if (!brake) begin
state <= 4'b0000; // IDLE state
end
end
endcase
end
end
assign left_lights = (state == 4'b0001 || state == 4'b0010 || state == 4'b0100) ? 3'b111 : 3'b000;
assign right_lights = (state == 4'b1000 || state == 4'b0100 || state == 4'b0010) ? 3'b111 : 3'b000;
endmodule
```
这个Verilog模块实现了一个汽车尾灯的状态机。根据输入的刹车、左转弯和右转弯信号,它会控制左侧和右侧的灯的亮灭。根据状态机的状态,左侧和右侧的灯会按照规定的亮灭规律进行变化。
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