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;
}