1 files changed, 29 insertions, 4 deletions
diff --git a/os/hal/include/rtc.h b/os/hal/include/rtc.h
index 474862910..aa1a61f49 100644
--- a/os/hal/include/rtc.h
+++ b/os/hal/include/rtc.h
@@ -1,3 +1,23 @@
+/*
+    ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
+                 2011 Giovanni Di Sirio.
+
+    This file is part of ChibiOS/RT.
+
+    ChibiOS/RT is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 3 of the License, or
+    (at your option) any later version.
+
+    ChibiOS/RT is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
 /**
  * @file    rtc.h
  * @brief   RTC Driver macros and structures.
@@ -58,10 +78,15 @@ typedef void (*rtccb_t)(RTCDriver *rtcp);
 extern "C" {
 #endif
   void rtcInit(void);
-#if RTC_SUPPORTS_CALLBACKS
-  void rtcStart(RTCDriver *rtcp, const RTCConfig *rtccfgp);
-  void rtcStop(void);
-#endif /* RTC_SUPPORTS_CALLBACKS */
+
+  #if RTC_SUPPORTS_CALLBACKS
+    void rtcStart(RTCDriver *rtcp, const RTCConfig *rtccfgp);
+    void rtcStop(void);
+  #else /* RTC_SUPPORTS_CALLBACKS */
+    #define rtcStart(rtcp, rtccfgp){;}
+    #define rtcStop(){;}
+  #endif /* RTC_SUPPORTS_CALLBACKS */
+
   void rtcSetTime(uint32_t tv_sec);
   uint32_t rtcGetSec(void);
   uint16_t rtcGetMsec(void);