quartusii多种波形发生器

基于FPGA的quartusii平台可以实现多种波形发生器，包括正弦波、方波、三角波和PWM波。通过该平台，可以进行开关切换模式，并且可以通过按键调节频率、相位和占空比等参数。

以下是一个基于quartusii平台的任意波形发生器的示例代码：

module waveform_generator(
  input wire clk,
  input wire rst,
  output wire wave_out
);

  reg [31:0] counter;
  reg [31:0] frequency;
  reg [31:0] phase;
  reg [31:0] duty_cycle;
  reg [31:0] wave_period;
  reg [31:0] wave_counter;
  reg wave_state;

  always @(posedge clk or posedge rst) begin
    if (rst) begin
      counter <= 0;
      frequency <= 0;
      phase <= 0;
      duty_cycle <= 0;
      wave_period <= 0;
      wave_counter <= 0;
      wave_state <= 0;
    end else begin
      counter <= counter + 1;
      if (counter >= frequency) begin
        counter <= 0;
        wave_counter <= wave_counter + 1;
        if (wave_counter >= wave_period) begin
          wave_counter <= 0;
        end
      end
    end
  end

  always @(posedge clk or posedge rst) begin
    if (rst) begin
      wave_state <= 0;
    end else begin
      case (wave_state)
        0: begin // 正弦波
          wave_out <= (wave_counter < (wave_period / 2)) ? 1 : 0;
          if (wave_counter >= wave_period) begin
            wave_state <= 1;
          end
        end
        1: begin // 方波
          wave_out <= (wave_counter < duty_cycle) ? 1 : 0;
          if (wave_counter >= wave_period) begin
            wave_state <= 2;
          end
        end
        2: begin // 三角波
          wave_out <= (wave_counter < (wave_period / 2)) ? wave_counter : (wave_period - wave_counter);
          if (wave_counter >= wave_period) begin
            wave_state <= 3;
          end
        end
        3: begin // PWM波
          wave_out <= (wave_counter < (wave_period * duty_cycle / 100)) ? 1 : 0;
          if (wave_counter >= wave_period) begin
            wave_state <= 0;
          end
        end
      endcase
    end
  end

endmodule

该代码实现了一个波形发生器模块，通过输入的时钟信号和复位信号，以及设置的频率、相位和占空比等参数，可以输出不同类型的波形信号。