1 代码

`timescale 1ns / 1ps


module simulate_camera_out (
    input clk,
    input rest_n,
    output camera_clk,  //像素时钟
    output [13:0] camera_data,  //像素值数据
    output [19:0] pixel_xy,  //此时输出的像素值坐标
    output reg frame_valid  //帧有效信号，1代表帧有效0代表帧无效
);

  localparam PIXEL_SIZE = 640 * 512;  //输出像素数量
  localparam PIXEL_VALUE = 16383;  //14位1
  localparam FRAME_DELAY = 100;  //延迟100个时钟单位

  reg [19:0] pixel_count;
  reg [13:0] out_count;
  reg [14:0] frame_delay_count;


  assign camera_clk = clk;
  assign camera_data = out_count;
  assign pixel_xy = pixel_count;

  //计算此时输出的像素坐标，0~640*512-1
  always @(posedge clk or negedge rest_n) begin
    if (!rest_n) begin
      pixel_count <= 0;
    end else begin
      if (frame_valid == 0) begin
        pixel_count <= 0;
      end else if (pixel_count == PIXEL_SIZE - 1) begin
        pixel_count <= 0;
      end else begin