做硬件的第一个实例，一般当然是LED点灯啦~

硬件：ZedBoard

软件：ISE 14.7

1、新建工程

2、选择平台

3、新建完成后，输入如下代码：

`timescale 1ns / 1ps//////////////////////////////////////////////////////////////////////////////////// Company: // Engineer: // // Create Date:    16:49:10 11/23/2014 // Design Name: // Module Name:    main // Project Name: // Target Devices: // Tool versions: // Description: //// Dependencies: //// Revision: // Revision 0.01 - File Created// Additional Comments: ////////////////////////////////////////////////////////////////////////////////////module main(	input clk,	output reg [7:0] led = 8‘h01    );reg[31:0] cnt = 0;reg clk_buf = 0;reg direction = 0;always@(posedge clk) begin	if (cnt==32‘d10000000) begin		clk_buf <= !clk_buf;		cnt <= 0;	end	else begin		cnt <= cnt + 1;	endendalways@(posedge clk_buf) begin	// direction control	if (led==8‘h80) begin		direction = 1‘b1;	end else if (led==8‘h01) begin		direction = 1‘b0;	end		// shift	if (direction==1‘b0) begin		led <= {led[6:0], 1‘b0}; // shift left	end	else if (direction==1‘b1) begin		led <= {1‘b0,led[7:1]};  // shift right	endendendmodule

4、添加如下的UCF文件：

# "LD0"NET "led[0]" LOC = T22;NET "led[0]" IOSTANDARD = LVCMOS33;# "LD1"NET "led[1]" LOC = T21;NET "led[1]" IOSTANDARD = LVCMOS33;# "LD2"NET "led[2]" LOC = U22;NET "led[2]" IOSTANDARD = LVCMOS33;# "LD3"NET "led[3]" LOC = U21;NET "led[3]" IOSTANDARD = LVCMOS33;# "LD4"NET "led[4]" LOC = V22;NET "led[4]" IOSTANDARD = LVCMOS33;# "LD5"NET "led[5]" LOC = W22;NET "led[5]" IOSTANDARD = LVCMOS33;# "LD6"NET "led[6]" LOC = U19;NET "led[6]" IOSTANDARD = LVCMOS33;# "LD7"NET "led[7]" LOC = U14;NET "led[7]" IOSTANDARD = LVCMOS33;# "GCLK"NET "clk" LOC = Y9;NET "clk" IOSTANDARD = LVCMOS33;

5、编译，下载

Zynq学习笔记（1）