import RT-Thread@9217865c without bsp, libcpu and components/net

components/libc/posix/delay/delay.c

@@ -0,0 +1,78 @@
+/*
+ * Copyright (c) 2006-2023, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2021-05-07     Meco Man     first Version
+ */
+
+#include <sys/types.h>
+#include <rtthread.h>
+#include <rthw.h>
+
+void msleep(unsigned int msecs)
+{
+    rt_thread_mdelay(msecs);
+}
+RTM_EXPORT(msleep);
+
+void ssleep(unsigned int seconds)
+{
+    msleep(seconds * 1000);
+}
+RTM_EXPORT(ssleep);
+
+void mdelay(unsigned long msecs)
+{
+    rt_hw_us_delay(msecs * 1000);
+}
+RTM_EXPORT(mdelay);
+
+void udelay(unsigned long usecs)
+{
+    rt_hw_us_delay(usecs);
+}
+RTM_EXPORT(udelay);
+
+void ndelay(unsigned long nsecs)
+{
+    rt_hw_us_delay(1);
+}
+RTM_EXPORT(ndelay);
+
+unsigned int sleep(unsigned int seconds)
+{
+    if (rt_thread_self() != RT_NULL)
+    {
+        ssleep(seconds);
+    }
+    else /* scheduler has not run yet */
+    {
+        while(seconds > 0)
+        {
+            udelay(1000000u);
+            seconds --;
+        }
+    }
+
+    return 0;
+}
+RTM_EXPORT(sleep);
+
+int usleep(useconds_t usec)
+{
+    if (rt_thread_self() != RT_NULL)
+    {
+        msleep(usec / 1000u);
+        udelay(usec % 1000u);
+    }
+    else  /* scheduler has not run yet */
+    {
+        udelay(usec);
+    }
+
+    return 0;
+}
+RTM_EXPORT(usleep);