Xilinx ISE 12.3 LED测试程序

1. 进入XPS，使用BSB wizard。

2. 命名新建的工程，并选择I would like to creat a system for a custom board

3. 板子参数：virtex4///xc4vsx25///ff668///-10

4. 晶振频率100MHz，Local memory选16KB

5. 点击Add Device，IO Interface Type选GPIO，Device选LEDS。GPIO Data Width就是板子上led的个数，选择6

6. STDIN和STDOUT选NONE

7. 点finish之后会弹出一个窗口，提示你需要该两个文件data/system.ucf和etc/download.cmd，点OK

8. 在system下双击download.cmd文件。其中需要修改的是两处数字，这个数字表示的是你FPGA在JTAG链中是第几个。这里将1改为2.

9. 在system下双击system.ucf文件，开始锁管脚。打开SEED-FEM025.pdf，找到clk、rst和LEDS的管脚，并修改。

10. Hardware->Generate Netlist。这个过程比较费时。

11. Software->Generate Libraries and BSPs

12. 双击Application下sources下的TestApp_Memory.c，写程序。

13. 在SEED-FEM025.pdf中可以看到赋值为1时led亮，LED的排列方式为：

SEED	led2	led5
led4	led3
led6	led1

14. 写完之后Software->Build All User Applications。

无误之后就可以Download到板子上查看结果了 ，下面是源码：

/*
 * Xilinx EDK 12.3 EDK_MS3.70d
 *
 * This file is a sample test application
 *
 * This application is intended to test and/or illustrate some 
 * functionality of your system.  The contents of this file may
 * vary depending on the IP in your system and may use existing
 * IP driver functions.  These drivers will be generated in your
 * XPS project when you run the "Generate Libraries" menu item
 * in XPS.
 *
 * Your XPS project directory is at:
 *    E:\Projects\FPGA\Xilinx\TEST12.3\light_led\
 */

// Located in: microblaze_0/include/xparameters.h

#include "xparameters.h"
#include "xgpio.h"
#include "xstatus.h"
#define LED_DELAY 1000000
XGpio LED_POINTER;
//====================================================

int main (void) {
   /*
    * Enable and initialize cache
    */
   #if XPAR_MICROBLAZE_0_USE_ICACHE
      Xil_ICacheInvalidate();
      Xil_ICacheEnable();
   #endif

   #if XPAR_MICROBLAZE_0_USE_DCACHE
      Xil_DCacheInvalidate();
       Xil_DCacheEnable();
   #endif

   #if XPAR_MICROBLAZE_0_USE_DCACHE
      Xil_DCacheDisable();
      Xil_DCacheInvalidate();
   #endif

   #if XPAR_MICROBLAZE_0_USE_ICACHE
      Xil_ICacheDisable();
      Xil_ICacheInvalidate();
   #endif

volatile int DELAY;
int count=0;

XGpio_Initialize(&LED_POINTER,XPAR_LEDS_DEVICE_ID);
XGpio_SetDataDirection(&LED_POINTER,1,0x0000);


while(1)
 {count++;
 if(count%2==0)
  {
  XGpio_WriteReg(XPAR_LEDS_BASEADDR,1,0x02);
  }
 else
  {
  XGpio_WriteReg(XPAR_LEDS_BASEADDR,1,0x16);
  }
  
 for(DELAY=0;DELAY<LED_DELAY;DELAY++);
 
 if(count%2==0)
  {
  XGpio_WriteReg(XPAR_LEDS_BASEADDR,1,0x08);
  }
 else
  {
  XGpio_WriteReg(XPAR_LEDS_BASEADDR,1,0x04);
  }
  
  for(DELAY=0;DELAY<LED_DELAY;DELAY++);
  
  if(count%2==0)
  {
  XGpio_WriteReg(XPAR_LEDS_BASEADDR,1,0x32);
  }
 else
  {
  XGpio_WriteReg(XPAR_LEDS_BASEADDR,1,0x01);
  }
  
  for(DELAY=0;DELAY<LED_DELAY;DELAY++);
 }
 
   return 0;
}