#include"xparameters.h"/* Peripheral parameters 外围的參数 */
#include"xgpio.h"/* GPIO data struct and APIs GPIO、结构,应用程序编程接口 */
#include"xil_printf.h"
#include"xil_cache.h"
#define GPIO_BITWIDTH 8 /* This is the width of the GPIO */
#define GPIO_DEVICE_ID XPAR_AXI_GPIO_0_DEVICE_ID//device id
#define LED_DELAY 40000000/* times delay*/
#define LED_MAX_BLINK 0x1 /* Number of times the LED Blinks */
#define LED_CHANNEL 1/* GPIO channel*/
#define printf xil_printf /* A smaller footprint printf */
XGpio Gpio; /* The Instance of the GPIO Driver */
XGpio GpioOutput; /* The driver instance for GPIO Device configured as O/P */

int GpioMarquee (u16 DeviceId, u32 GpioWidth)
{
int Delay;
u32 LedBit;
u32 LedLoop;
int Status;
Status = XGpio_Initialize(&GpioOutput, DeviceId);
if (Status != XST_SUCCESS) {
return XST_FAILURE;
}
XGpio_SetDataDirection(&GpioOutput, LED_CHANNEL, 0x0);//输出模式
XGpio_DiscreteWrite(&GpioOutput, LED_CHANNEL, 0x0);
for (LedBit = 0x0; LedBit < GpioWidth; LedBit++) { XGpio_DiscreteWrite(&GpioOutput, LED_CHANNEL, 1 << LedBit); for (Delay = 0; Delay < LED_DELAY; Delay++); XGpio_DiscreteClear(&GpioOutput, LED_CHANNEL, 1 << LedBit); } for (LedBit = 0x07; LedBit >= 0x01; LedBit--) {
XGpio_DiscreteWrite(&GpioOutput, LED_CHANNEL,
1 << LedBit);
for (Delay = 0; Delay < LED_DELAY; Delay++);
XGpio_DiscreteClear(&GpioOutput, LED_CHANNEL,
1 << LedBit);
}
for (LedBit = 0x0; LedBit < GpioWidth; LedBit++) {
LedBit++;
XGpio_DiscreteWrite(&GpioOutput, LED_CHANNEL,
1 << LedBit);
for (Delay = 0; Delay < LED_DELAY; Delay++);
XGpio_DiscreteClear(&GpioOutput, LED_CHANNEL,
1 << LedBit);
}
return XST_SUCCESS;
}
main(void)
{
while(1){
u32 status;
status = GpioMarquee (GPIO_DEVICE_ID,GPIO_BITWIDTH);
printf("SUCESS!.\r\n");
}
return XST_SUCCESS;
}