请使用Verlige DHL语言将上述两段代码合并，实现流水灯与呼吸灯的模式转换

以下是使用Verlige DHL语言将流水灯和呼吸灯模式转换的代码：

// 确定引脚
input clk, reset;
output reg [2:0] led;

// 初始化变量
reg [3:0] count = 4'b0000;
reg [2:0] brightness = 3'b000;

// 定义流水灯模式
always @(posedge clk, posedge reset) begin
    if (reset) begin
        led <= 3'b000;
    end else begin
        case (count)
            4'b0000: led <= 3'b001;
            4'b0001: led <= 3'b010;
            4'b0010: led <= 3'b100;
            4'b0011: led <= 3'b010;
            4'b0100: led <= 3'b001;
            4'b0101: led <= 3'b010;
            4'b0110: led <= 3'b100;
            4'b0111: led <= 3'b010;
            4'b1000: led <= 3'b001;
            4'b1001: led <= 3'b010;
            4'b1010: led <= 3'b100;
            4'b1011: led <= 3'b010;
            4'b1100: led <= 3'b001;
            4'b1101: led <= 3'b010;
            4'b1110: led <= 3'b100;
            4'b1111: led <= 3'b010;
        endcase
        count <= count + 1;
    end
end

// 定义呼吸灯模式
always @(posedge clk, posedge reset) begin
    if (reset) begin
        brightness <= 3'b000;
    end else begin
        case (brightness)
            3'b000: brightness <= 3'b001;
            3'b001: brightness <= 3'b010;
            3'b010: brightness <= 3'b011;
            3'b011: brightness <= 3'b100;
            3'b100: brightness <= 3'b101;
            3'b101: brightness <= 3'b110;
            3'b110: brightness <= 3'b111;
            3'b111: brightness <= 3'b000;
        endcase
    end
end

// 控制LED亮度
always @(posedge clk, posedge reset) begin
    if (reset) begin
        led <= 3'b000;
    end else begin
        case (led)
            3'b001: led <= {brightness, 1'b0, 1'b0};
            3'b010: led <= {1'b0, brightness, 1'b0};
            3'b100: led <= {1'b0, 1'b0, brightness};
        endcase
    end
end

该代码使用Verilog HDL语言编写，实现了流水灯和呼吸灯模式的转换。在每个时钟上升沿和复位上升沿时，根据计数器的值和亮度值来控制LED的状态，从而实现流水灯和呼吸灯模式的切换。