Add rtc.h header file

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@3493 42af7a65-404d-4744-a932-0658087f49c3

3 files changed, 25 insertions, 10 deletions

diff --git a/nuttx/include/sys/time.h b/nuttx/include/sys/time.h
index d9493b386..2ac8ae004 100644
--- a/nuttx/include/sys/time.h
+++ b/nuttx/include/sys/time.h
@@ -33,8 +33,8 @@
  *
  ****************************************************************************/
 
-#ifndef __SYS_MMAN_H
-#define __SYS_MMAN_H
+#ifndef __INCLUDE_SYS_TIME_H
+#define __INCLUDE_SYS_TIME_H
 
 /****************************************************************************
  * Included Files
@@ -71,4 +71,4 @@ EXTERN int gettimeofday(struct timeval *tp, FAR void *tzp);
 }
 #endif
 
-#endif /* __SYS_MMAN_H */
+#endif /* __INCLUDE_SYS_TIME_H */
diff --git a/nuttx/include/sys/types.h b/nuttx/include/sys/types.h
index 736d2fb75..43731f13c 100644
--- a/nuttx/include/sys/types.h
+++ b/nuttx/include/sys/types.h
@@ -179,6 +179,10 @@ typedef int16_t      blksize_t;
 typedef unsigned int socklen_t;
 typedef uint16_t     sa_family_t;
 
+/* Used for system times in clock ticks */
+
+typedef uint32_t     clock_t;
+
 /* The type useconds_t shall be an unsigned integer type capable of storing
  * values at least in the range [0, 1000000]. The type suseconds_t shall be
  * a signed integer type capable of storing values at least in the range
diff --git a/nuttx/include/time.h b/nuttx/include/time.h
index e3560b5c1..fab20e020 100644
--- a/nuttx/include/time.h
+++ b/nuttx/include/time.h
@@ -49,15 +49,22 @@
  * Pre-processor Definitions
  ********************************************************************************/
 
-/* Clock tick of the system (frequency Hz).  The default value is 100Hz, but this
- * default setting can be overridden by defining the clock interval in
- * milliseconds as CONFIG_MSEC_PER_TICK in the board configuration file.
+/* Clock tick of the system (frequency Hz).  
+ *
+ * NOTE: This symbolic name CLK_TCK has been removed from the standard.  It is
+ * replaced with CLOCKS_PER_SEC.  Both are defined here.
+ *
+ * The default value is 100Hz, but this default setting can be overridden by
+ * defining the clock interval in milliseconds as CONFIG_MSEC_PER_TICK in the
+ * board configuration file.
  */
 
 #ifdef CONFIG_MSEC_PER_TICK
-# define CLK_TCK (1000/CONFIG_MSEC_PER_TICK)
+# define CLK_TCK        (1000/CONFIG_MSEC_PER_TICK)
+# define CLOCKS_PER_SEC (1000/CONFIG_MSEC_PER_TICK)
 #else
-# define CLK_TCK (100)
+# define CLK_TCK        (100)
+# define CLOCKS_PER_SEC (100)
 #endif
 
 /* This is the only clock_id supported by the "Clock and Timer
@@ -141,15 +148,19 @@ extern "C" {
 #define EXTERN extern
 #endif
 
+EXTERN clock_t clock(void);
+
 EXTERN int clock_settime(clockid_t clockid, const struct timespec *tp);
 EXTERN int clock_gettime(clockid_t clockid, struct timespec *tp);
 EXTERN int clock_getres(clockid_t clockid, struct timespec *res);
 
 EXTERN time_t mktime(const struct tm *tp);
-EXTERN struct tm *gmtime(const time_t *clock);
-EXTERN struct tm *gmtime_r(const time_t *clock, struct tm *result);
+EXTERN struct tm *gmtime(const time_t *timer);
+EXTERN struct tm *gmtime_r(const time_t *timer, struct tm *result);
 EXTERN size_t strftime(char *s, size_t max, const char *format, const struct tm *tm);
 
+EXTERN time_t time(time_t *tloc);
+
 EXTERN int timer_create(clockid_t clockid, FAR struct sigevent *evp, FAR timer_t *timerid);
 EXTERN int timer_delete(timer_t timerid);
 EXTERN int timer_settime(timer_t timerid, int flags, FAR const struct itimerspec *value,