编写 rgb 彩灯运行线程，三种颜色依次切换，中间延时 1s

static void rgb_thread_entry(void* p) { RGB_Init(); while(1) { rt_thread_mdelay(1000); RGB_Blue(1); rt_thread_mdelay(1000); RGB_Green(1); rt_thread_mdelay(1000); RGB_Red(1); } }

创建线程启动函数，用于启动上一步编写的线程主体

static int Thread_RGB(void) { rt_thread_t thread = RT_NULL; thread = rt_thread_create("rgb", rgb_thread_entry, RT_NULL, 512, 10, 10); if(thread == RT_NULL) { rt_kprintf("Thread_GRB Init ERROR"); return RT_ERROR; } rt_thread_startup(thread); }

添加将线程初始化添加入系统初始化中 INIT_APP_EXPORT(Thread_RGB);