[mini2440]rtc clean up

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@518 bbd45198-f89e-11dd-88c7-29a3b14d5316

libcpu/arm/s3c24x0/rtc.c

@@ -9,32 +9,38 @@
  *
  * Change Logs:
  * Date           Author       Notes
- * 2009-04-26     yi.qiu       first version
- * 2010-03-18     Gary Lee     add functions such as GregorianDay
- *                             and rt_rtc_time_to_tm
+ * 2009-04-26     yi.qiu       	first version
+ * 2010-03-18     Gary Lee	add functions such as GregorianDay
+ *                             		and rt_rtc_time_to_tm
+ * 2009-03-20     yi.qiu       	clean up
  */
 
 #include <rtthread.h>
 #include <time.h>
 #include <s3c24x0.h>
-#include "rtc.h"
 
+#define RTC_DEBUG
+
+#define RTC_ENABLE		(RTCCON |=  0x01);	/*RTC read and write enable */
+#define RTC_DISABLE		(RTCCON &= ~0x01);	/* RTC read and write disable */
+#define BCD2BIN(n)		(((((n) >> 4) & 0x0F) * 10) + ((n) & 0x0F))
+#define BIN2BCD(n)		((((n) / 10) << 4) | ((n) % 10))
 
 /**
  * This function get rtc time
  */
-void rt_hw_rtc_get(struct rtc_time *ti)
+void rt_hw_rtc_get(struct tm *ti)
 {
 	rt_uint8_t sec, min, hour, mday, wday, mon, year;
 
 	/* enable access to RTC registers */
-	RTC_ENABLE();
+	RTC_ENABLE
 
 	/* read RTC registers */
 	do
 	{
-		sec 	= BCDSEC;
-		min 	= BCDMIN;
+		sec 		= BCDSEC;
+		min 		= BCDMIN;
 		hour 	= BCDHOUR;
 		mday	= BCDDATE;
 		wday 	= BCDDAY;
@@ -43,7 +49,7 @@ void rt_hw_rtc_get(struct rtc_time *ti)
     } while (sec != BCDSEC);
 
 	/* disable access to RTC registers */
-	RTC_DISABLE();
+	RTC_DISABLE
 
 	ti->tm_sec  	= BCD2BIN(sec  & 0x7F);
 	ti->tm_min  	= BCD2BIN(min  & 0x7F);
@@ -59,20 +65,20 @@ void rt_hw_rtc_get(struct rtc_time *ti)
 /**
  * This function set rtc time
  */
-void rt_hw_rtc_set(struct rtc_time *ti)
+void rt_hw_rtc_set(struct tm *ti)
 {
 	rt_uint8_t sec, min, hour, mday, wday, mon, year;
 
-	year 	= BIN2BCD(ti->tm_year);
+	year		= BIN2BCD(ti->tm_year);
 	mon 	= BIN2BCD(ti->tm_mon);
 	wday 	= BIN2BCD(ti->tm_wday);
 	mday 	= BIN2BCD(ti->tm_mday);
 	hour 	= BIN2BCD(ti->tm_hour);
-	min 	= BIN2BCD(ti->tm_min);
-	sec 	= BIN2BCD(ti->tm_sec);
+	min 		= BIN2BCD(ti->tm_min);
+	sec 		= BIN2BCD(ti->tm_sec);
 
 	/* enable access to RTC registers */
-	RTC_ENABLE();
+	RTC_ENABLE
 
 	/* write RTC registers */
 	BCDSEC 		= sec;
@@ -80,11 +86,11 @@ void rt_hw_rtc_set(struct rtc_time *ti)
 	BCDHOUR 	= hour;
 	BCDDATE 	= mday;
 	BCDDAY 		= wday;
-	BCDMON 		= mon;
+	BCDMON 	= mon;
 	BCDYEAR 	= year;
 
 	/* disable access to RTC registers */
-	RTC_DISABLE();
+	RTC_DISABLE
 }
 
 /**
@@ -96,95 +102,16 @@ void rt_hw_rtc_reset (void)
 	RTCCON &= ~(0x08|0x01);
 }
 
-/*
- * This only works for the Gregorian calendar - i.e. after 1752 (in the UK)
- */
-void GregorianDay(struct rtc_time * tm)
-{
-	int leapsToDate;
-	int lastYear;
-	int day;
-	int MonthOffset[] = { 0,31,59,90,120,151,181,212,243,273,304,334 };
-
-	lastYear=tm->tm_year-1;
-
-	/*
-	 * Number of leap corrections to apply up to end of last year
-	 */
-	leapsToDate = lastYear/4 - lastYear/100 + lastYear/400;
-
-	/*
-	 * This year is a leap year if it is divisible by 4 except when it is
-	 * divisible by 100 unless it is divisible by 400
-	 *
-	 * e.g. 1904 was a leap year, 1900 was not, 1996 is, and 2000 will be
-	 */
-	if((tm->tm_year%4==0) &&
-	   ((tm->tm_year%100!=0) || (tm->tm_year%400==0)) &&
-	   (tm->tm_mon>2)) {
-		/*
-		 * We are past Feb. 29 in a leap year
-		 */
-		day=1;
-	} else {
-		day=0;
-	}
-
-	day += lastYear*365 + leapsToDate + MonthOffset[tm->tm_mon-1] + tm->tm_mday;
-
-	tm->tm_wday=day%7;
-}
-
-void rt_rtc_time_to_tm(rt_uint32_t tim, struct rtc_time *tm)
-{
-	register int    i;
-	register long   hms, day;
-
-	day = tim / SECDAY;
-	hms = tim % SECDAY;
-
-	/* Hours, minutes, seconds are easy */
-	tm->tm_hour = hms / 3600;
-	tm->tm_min = (hms % 3600) / 60;
-	tm->tm_sec = (hms % 3600) % 60;
-
-	/* Number of years in days */
-	for (i = STARTOFTIME; day >= days_in_year(i); i++) {
-		day -= days_in_year(i);
-	}
-	tm->tm_year = i;
-
-	/* Number of months in days left */
-	if (LEAP_YEAR(tm->tm_year)) {
-		days_in_month(FEBRUARY) = 29;
-	}
-	for (i = 1; day >= days_in_month(i); i++) {
-		day -= days_in_month(i);
-	}
-	days_in_month(FEBRUARY) = 28;
-	tm->tm_mon = i;
-
-	/* Days are what is left over (+1) from all that. */
-	tm->tm_mday = day + 1;
-
-	/*
-	 * Determine the day of week
-	 */
-	GregorianDay(tm);
-}
-
-
-
 static struct rt_device rtc;
 static rt_err_t rt_rtc_open(rt_device_t dev, rt_uint16_t oflag)
 {
-	RTC_ENABLE();
+	RTC_ENABLE
 	return RT_EOK;
 }
 
 static rt_err_t rt_rtc_close(rt_device_t dev)
 {
-	RTC_DISABLE();
+	RTC_DISABLE
 	return RT_EOK;
 }
 
@@ -195,10 +122,10 @@ static rt_size_t rt_rtc_read(rt_device_t dev, rt_off_t pos, void* buffer, rt_siz
 
 static rt_err_t rt_rtc_control(rt_device_t dev, rt_uint8_t cmd, void *args)
 {
-	struct rtc_time* time;
+	struct tm* time;
 	RT_ASSERT(dev != RT_NULL);
 
-	time = (struct rtc_time*)args;
+	time = (struct tm*)args;
 	switch (cmd)
 	{
 	case RT_DEVICE_CTRL_RTC_GET_TIME:
@@ -258,7 +185,7 @@ time_t time(time_t* t)
 #include <finsh.h>
 void set_date(rt_uint32_t year, rt_uint32_t month, rt_uint32_t day)
 {
-	struct rtc_time ti;
+	struct tm ti;
 	rt_device_t device;
 		
 	device = rt_device_find("rtc");
@@ -275,7 +202,7 @@ FINSH_FUNCTION_EXPORT(set_date, set date(year, month, day))
 
 void set_time(rt_uint32_t hour, rt_uint32_t minute, rt_uint32_t second)
 {
-	struct rtc_time ti;
+	struct tm ti;
 	rt_device_t device;
 		
 	device = rt_device_find("rtc");
@@ -283,7 +210,7 @@ void set_time(rt_uint32_t hour, rt_uint32_t minute, rt_uint32_t second)
 	{
 		rt_rtc_control(device, RT_DEVICE_CTRL_RTC_GET_TIME, &ti);
 		ti.tm_hour	= hour;
-		ti.tm_min	= minute;
+		ti.tm_min		= minute;
 		ti.tm_sec 	= second;
 		rt_rtc_control(device, RT_DEVICE_CTRL_RTC_SET_TIME, &ti);
 	}
@@ -299,4 +226,3 @@ void list_date(void)
 }
 FINSH_FUNCTION_EXPORT(list_date, list date)
 #endif
-

libcpu/arm/s3c24x0/rtc.h

-#ifndef __RT_HW_SERIAL_H__
-#define __RT_HW_SERIAL_H__
-
-#include <rthw.h>
-#include <rtthread.h>
-
-#include "s3c24x0.h"
-
-#define RTC_DEBUG
-
-#define	RTC_ENABLE()		    (RTCCON |=  0x01)	//RTC read and write enable
-#define	RTC_DISABLE()		    (RTCCON &= ~0x01)	//RTC read and write disable
-
-#define BCD2BIN(n)			    (((((n) >> 4) & 0x0F) * 10) + ((n) & 0x0F))
-#define BIN2BCD(n)			    ((((n) / 10) << 4) | ((n) % 10))
-
-#define LEAPS_THRU_END_OF(y)    ((y)/4 - (y)/100 + (y)/400)
-#define LEAP_YEAR(year) 	    ((!(year % 4) && (year % 100)) || !(year % 400))
-
-#define FEBRUARY		        2
-#define	STARTOFTIME		        1970
-#define SECDAY			        86400L
-#define SECYR			        (SECDAY * 365)
-#define	days_in_year(a)		    (LEAP_YEAR(a) ? 366 : 365)
-#define	days_in_month(a)	    (month_days[(a) - 1])
-
-static unsigned char month_days[] = 
-{
-	31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31
-};
-
-struct rtc_time 
-{
-	int tm_sec;
-	int tm_min;
-	int tm_hour;
-	int tm_mday;
-	int tm_mon;
-	int tm_year;
-	int tm_wday;
-	int tm_yday;
-	int tm_isdst;
-};
-
-void rt_hw_rtc_get (struct rtc_time *tmp);
-void rt_hw_rtc_set (struct rtc_time *tmp);
-void rt_hw_rtc_reset (void);
-void GregorianDay (struct rtc_time *);
-void rt_rtc_time_to_tm(rt_uint32_t tim, struct rtc_time *tm);
+/*
+ * File      : rtc.h
+ * This file is part of RT-Thread RTOS
+ * COPYRIGHT (C) 2009, RT-Thread Development Team
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rt-thread.org/license/LICENSE
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2010-03-20     yi.qiu      the first version
+ */
+
+#ifndef __RTC_H__
+#define __RTC_H__
+
+void rt_hw_rtc_init(void);
 
 #endif
+