FPGA驱动热敏打印头源码

以下是一个简单的FPGA驱动热敏打印头的Verilog代码示例，仅供参考。

module thermal_printer(
  input clk,
  input rst,
  input [7:0] data,
  input enable,
  output [7:0] status
);

  parameter [7:0] INIT_DATA = 8'h1B; // ESC
  parameter [7:0] INIT_DATA1 = 8'h40; // @
  parameter [7:0] HEAT_DATA = 8'h1B; // ESC
  parameter [7:0] HEAT_DATA1 = 8'h37; // 7
  parameter [7:0] HEAT_DATA2 = 8'h79; // y
  parameter [7:0] HEAT_DATA3 = 8'h01; // 1
  parameter [7:0] HEAT_DATA4 = 8'h00; // 0

  reg [7:0] state;
  reg [7:0] count;
  reg [7:0] data_out;
  reg [7:0] status_out;

  always @(posedge clk)
  begin
    if (rst)
    begin
      state <= 0;
      count <= 0;
      data_out <= INIT_DATA;
      status_out <= 0;
    end
    else
    begin
      case (state)
        0: // Send init command
          begin
            data_out <= INIT_DATA;
            if (count == 2) state <= 1;
          end
        1: // Send heat command
          begin
            data_out <= HEAT_DATA;
            if (count == 0) state <= 2;
          end
        2: // Send heat parameters
          begin
            case (count)
              0: data_out <= HEAT_DATA1;
              1: data_out <= HEAT_DATA2;
              2: data_out <= HEAT_DATA3;
              3: data_out <= HEAT_DATA4;
            endcase
            if (count == 3) state <= 3;
          end
        3: // Send data
          begin
            data_out <= data;
            if (enable == 0) state <= 4;
          end
        4: // Wait for idle
          begin
            data_out <= 0;
            if (enable) state <= 3;
          end
      endcase

      count <= count + 1;
      if (count == 3) count <= 0;
    end
  end

  always @(posedge clk)
  begin
    status_out <= 0;
    case (state)
      0: if (count == 2) status_out <= 0xFF;
      1: if (count == 0) status_out <= 0xFF;
      2: if (count == 3) status_out <= 0xFF;
      3: if (enable == 0) status_out <= 0xFF;
      4: if (enable == 1) status_out <= 0xFF;
    endcase
  end

  assign status = status_out;
  assign data = data_out;

endmodule

这个示例代码使用了有限状态机（FSM）控制热敏打印头的状态，根据输入的数据和使能信号控制打印头的工作状态。具体实现方式可以根据热敏打印头的通信协议和驱动要求进行修改。