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@@ -0,0 +1,55 @@
+#include <rtthread.h>
+#include <rtdevice.h>
+#include <board.h>
+
+
+rt_thread_t thread1;
+rt_thread_t thread2;
+rt_thread_t thread3;
+
+void thread1_task(void*parm)
+{
+    while(1)
+    {
+       rt_kprintf("run the thread1\r\n");
+       rt_thread_delay(1000);
+    }
+}
+void thread2_task(void*parm)
+{
+    while(1)
+    {
+       rt_kprintf("run the thread2\r\n");
+       rt_thread_delay(500);
+    }
+}
+void thread3_task(void*parm)
+{
+    while(1)
+    {
+       rt_kprintf("run the thread3\r\n");
+       rt_thread_delay(500);
+    }
+}
+
+int main(void)
+{
+
+    thread1 = rt_thread_create("thread1", thread1_task, RT_NULL, 1024, 4, 10);
+    thread2 = rt_thread_create("thread2", thread2_task, RT_NULL, 1024, 5, 10);
+    thread3 = rt_thread_create("thread3", thread3_task, RT_NULL, 1024, 5 ,10);
+
+    if(thread1 !=RT_NULL)
+    {
+         rt_thread_startup(thread1);
+    }
+    if(thread2 !=RT_NULL)
+    {
+         rt_thread_startup(thread2);
+    }
+    if(thread3 !=RT_NULL)
+    {
+         rt_thread_startup(thread3);
+    }
+    return RT_EOK;
+}