C8051F330自动调焦电机Verilog代码

对于C8051F330芯片自动调焦电机的Verilog代码，需要根据具体的电路设计和功能需求来编写。以下是一个简单的示例，仅供参考：

module auto_focus (
  input clk,
  input rst,
  input [7:0] motor_ctrl,
  output reg [7:0] motor_speed
);

// 定义FPGA控制寄存器地址
localparam FPGA_ADDR_CTRL = 8'h01;
// 定义FPGA状态寄存器地址
localparam FPGA_ADDR_STATUS = 8'h02;

// 定义电机方向寄存器地址
localparam MOTOR_DIRECTION_ADDR = 12'h1000;
// 定义电机速度寄存器地址
localparam MOTOR_SPEED_ADDR = 12'h1001;

// 定义焦距自动调节的最大、最小值
localparam FOCUS_MAX = 8'h64;
localparam FOCUS_MIN = 8'h00;

// 定义焦距当前值
reg [7:0] focus_current = 8'h32;

// 定义内部状态
reg [7:0] state = 8'h00;
reg [7:0] direction = 8'h00;
reg [7:0] speed = 8'h00;
reg [7:0] focus_target = 8'h00;

// 定义状态机
always @(posedge clk, posedge rst) begin
  if(rst) begin
    state <= 8'h00;
  end
  else begin
    case(state)
      8'h00: begin // 初始化FPGA
        if(motor_ctrl == FPGA_ADDR_CTRL) begin
          state <= 8'h01;
        end
      end
      8'h01: begin // 等待FPGA初始化完成
        if(motor_ctrl == FPGA_ADDR_STATUS && motor_speed == 8'h01) begin
          state <= 8'h02;
        end
      end
      8'h02: begin // 自动调焦
        focus_target <= // 根据焦距当前值和环境光线等因素，计算目标焦距
        if(focus_target > focus_current) begin // 电机正转
          direction <= 8'h01;
          speed <= 8'h80;
          state <= 8'h03;
        end
        else if(focus_target < focus_current) begin // 电机反转
          direction <= 8'h00;
          speed <= 8'h80;
          state <= 8'h03;
        end
        else begin // 焦距已经达到目标值，无需调整
          direction <= 8'h00;
          speed <= 8'h00;
          state <= 8'h02;
        end
      end
      8'h03: begin // 控制电机
        motor_speed <= speed;
        // 将电机方向和速度写入对应的寄存器
        // ...
        state <= 8'h04;
      end
      8'h04: begin // 等待电机停止
        if(focus_target == focus_current) begin // 焦距达到目标值
          direction <= 8'h00;
          speed <= 8'h00;
          state <= 8'h02;
        end
      end
      default: begin
        state <= 8'h00;
      end
    endcase
  end
end

endmodule

需要注意的是，此示例代码仅为参考，实际应用中需要根据具体的硬件电路、软件算法和控制逻辑来进行修改和优化。同时，需要根据实际情况来编写FPGA控制寄存器和状态寄存器的读写逻辑。