ok6410 led 流水灯程序
#include <stdio.h>#include <stdlib.h>
#include <unistd.h>
#include "sys/types.h"
#include "sys/ioctl.h"
#include "stdlib.h"
#include "termios.h"
#include "sys/stat.h"
#include "fcntl.h"
#include "sys/time.h"
#define LED_ON 0
#define LED_OFF 1
int main()
{
int fd,i,j,k;
int led_status = 0; //初始状态为熄灭
fd = open("/dev/leds", O_RDONLY); //打开设备
if (fd < 0) { // 如果打开设备失败，退出
perror("open device led failed !");
exit(1);
}
printf("led test show. press ctrl+c to exit \n");
ioctl(fd,LED_OFF);
while(1){//主循环
k++;
ioctl(fd,LED_ON,0); //点亮
printf("led0: on \n");
for(i=0;i<3000;i++)
for(j=0;j<10000;j++);
ioctl(fd,LED_OFF,0); //熄灭
ioctl(fd,LED_ON,1); //点亮
printf("led1: on \n");
for(i=0;i<3000;i++)
for(j=0;j<10000;j++);
ioctl(fd,LED_OFF,1); //熄灭
ioctl(fd,LED_ON,2); //点亮
printf("led2: on \n");
for(i=0;i<3000;i++)
for(j=0;j<10000;j++);
ioctl(fd,LED_OFF,2); //熄灭
ioctl(fd,LED_ON,3); //点亮
printf("led3: on \n");
for(i=0;i<3000;i++)
for(j=0;j<10000;j++);
ioctl(fd,LED_OFF,3); //熄灭
}
close(fd); //关闭设备
return 0;
}
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