LED.v文件

 
`timescale 1ns/1ps //时间单位：1ns，精度：1ps
module LED
(
 input clk,
 output led
);
 
parameter count_s = 26'd50_000_000; //50M晶振时钟，一个周期20ns
reg [25:0] time_count = 26'd0;      //时钟计数器，2^26 = 67108864
reg led_r = 1'b0;
 
always@(posedge clk)
 if(time_count >= count_s - 1)
   begin
     time_count <= 26'd0;
     led_r <= ~led_r;
   end
 else time_count <= time_count + 1'b1;
assign led = led_r;
 
endmodule

4444444444444444444444

Schematic



LED.xdc文件：

set_property IOSTANDARD LVCMOS33 [get_ports clk]
set_property PACKAGE_PIN M19 [get_ports clk]
set_property PACKAGE_PIN P21 [get_ports led]
set_property IOSTANDARD LVCMOS33 [get_ports led]
硬创社

还没有评论，抢个沙发！