物联网移动应用开发课程设计指导书1.pdf

#include
#include
#include
void main（）
{
while(1)
{
system("echo 1 > /sys/class/leds/green_led/brightness");
system("echo 0 > /sys/class/leds/red_led/brightness");
sleep(1);
system("echo 0 >/sys/class/leds/green_led/brightness");
system("echo 1 > /sys/class/leds/red_led/brightness");
sleep(1);
}
}

sudo chmod 777 brightness 最高权限 给brightness最高的执行权限