add examples

RTL00_SDKV35a/example_sources/rtc/readme.txt

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+Example Description
+
+This example describes how to use the RTC API. The RTC function is implemented by a G-Timer.
+
+Behavior:
+This example will print out the time information every secand.
+

RTL00_SDKV35a/example_sources/rtc/src/main.c

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+/*
+ *  Routines to access hardware
+ *
+ *  Copyright (c) 2013 Realtek Semiconductor Corp.
+ *
+ *  This module is a confidential and proprietary property of RealTek and
+ *  possession or use of this module requires written permission of RealTek.
+ */
+#include "rtc_api.h"
+     
+ int main() 
+ {
+    time_t seconds;
+    struct tm *timeinfo;
+    
+    rtc_init();
+    rtc_write(1256729737);  // Set RTC time to Wed, 28 Oct 2009 11:35:37
+
+    while(1) {
+        seconds = rtc_read();
+        timeinfo = localtime(&seconds);
+
+        DBG_8195A("Time as seconds since January 1, 1970 = %d\n", seconds);
+
+        DBG_8195A("Time as a basic string = %s", ctime(&seconds));
+
+        DBG_8195A("Time as a custom formatted string = %d-%d-%d %d:%d:%d ", 
+            timeinfo->tm_year, timeinfo->tm_mon, timeinfo->tm_mday, timeinfo->tm_hour,
+            timeinfo->tm_min,timeinfo->tm_sec);
+
+        wait(1);
+    }
+ }
+