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自己寫的例子，MSP4305438 RTC程序，僅供參考： 本例子總共分三部分： 1 config.h文件，用于提供各種類型的簡(jiǎn)稱，方便編寫代碼： #ifndef __config_h__
#define __config_h__ typedef signed char S8;
typedef signed int S16;
typedef signed long S32;
typedef unsigned char U8;
typedef unsigned int U16;
typedef unsigned long U32;
typedef volatile signed char VS8;
typedef volatile signed int VS16;
typedef volatile signed long VS32;
typedef volatile unsigned char VU8;
typedef volatile unsigned int VU16;
typedef volatile unsigned long VU32;
typedef const U8 FLASH; typedef enum
{
FALSE = 0,
TRUE = !FALSE
} BOOL;
#endif 2.rtcReg.h文件，配置RTC物理層以及存儲(chǔ)RTC時(shí)間的結(jié)構(gòu)變量 #ifndef __rtcReg_H
#define __rtcReg_H #include "config.h"
#include "MSP430x54x.h"
typedef struct
{
VU16 RTCYEAR;
VU16 RTCMON;
VU16 RTCDOW;
VU16 RTCDAY;
VU16 RTCHOUR;
VU16 RTCMIN;
VU16 RTCSEC;
}RTC_RegisterDef; typedef struct
{
VU16 Year;
VU16 Month;
VU16 DayOfWeek;
VU16 Day;
VU16 Hour;
VU16 Minute;
VU16 Second;
}RTC_TimerDef; #define RTC_Delay2us _NOP();\
_NOP() #define RTC_Delay1us _NOP() /*----------------------------------------------------------------/
函數(shù)名:RTC_TimerInitial
參數(shù)：RTC相關(guān)寄存器結(jié)構(gòu)體指針變量self,RTC時(shí)間變量結(jié)構(gòu)體指針child
返回值：NULL
功能：初始化RTC寄存器結(jié)構(gòu)體和RTC變量結(jié)構(gòu)體相應(yīng)都為0
/----------------------------------------------------------------*/
void RTC_TimerInitial(RTC_RegisterDef *self,RTC_TimerDef *child); /*----------------------------------------------------------------/
函數(shù)名：RTC_TimerInfo
參數(shù)：RTC變量結(jié)構(gòu)體指針，相應(yīng)變量
返回值：NULL
功能：給RTC結(jié)構(gòu)體中的相應(yīng)變量賦值
/----------------------------------------------------------------*/
void RTC_TimerInfo(RTC_TimerDef *child,VU16 in_year,\
VU16 in_month,\
VU16 in_dow,\
VU16 in_day,\
VU16 in_hour,\
VU16 in_min,\
VU16 in_sec\
); /*----------------------------------------------------------------/
函數(shù)名：RTC_TimerSet
參數(shù)：RTC相關(guān)寄存器結(jié)構(gòu)體指針變量self,RTC時(shí)間變量結(jié)構(gòu)體指針child
返回值：NULL
功能：將RTC變量結(jié)構(gòu)體中的相應(yīng)變量值來設(shè)置RTC寄存器
/----------------------------------------------------------------*/
void RTC_TimerSet(RTC_RegisterDef *self,RTC_TimerDef *child); /*----------------------------------------------------------------/
函數(shù)名：RTC_TimerGet
參數(shù)：RTC相關(guān)寄存器結(jié)構(gòu)體指針變量self,RTC時(shí)間變量結(jié)構(gòu)體指針child
返回值：NULL
功能：用RTC變量結(jié)構(gòu)體指針child裝載讀取RTC寄存器指針中的相應(yīng)值
/----------------------------------------------------------------*/
void RTC_TimerGet(RTC_RegisterDef *self,RTC_TimerDef *child);
#endif 3.RTC.c文件，用于主程序調(diào)用函數(shù)的編寫 #include "rtcReg.h"
void RTC_TimerInitial(RTC_RegisterDef *self,RTC_TimerDef *child)
{
_DINT();
RTC_Delay2us;
self->RTCYEAR = child->Year = 0;
RTC_Delay2us;
self->RTCMON = child->Month = 0;
RTC_Delay2us;
self->RTCDOW = child->DayOfWeek = 0;
RTC_Delay2us;
self->RTCDAY = child->Day = 0;
RTC_Delay2us;
self->RTCHOUR = child->Hour = 0;
RTC_Delay2us;
self->RTCMIN = child->Minute = 0;
RTC_Delay2us;
self->RTCSEC = child->Second = 0;
RTC_Delay2us;
_EINT();
}
void RTC_TimerInfo(RTC_TimerDef *child,VU16 in_year,\
VU16 in_month,\
VU16 in_dow,\
VU16 in_day,\
VU16 in_hour,\
VU16 in_min,\
VU16 in_sec\
)
{
child->Year = in_year;
child->Month = in_month;
child->DayOfWeek = in_dow;
child->Day = in_day;
child->Hour = in_hour;
child->Minute = in_min;
child->Second = in_sec;
} void RTC_TimerSet(RTC_RegisterDef *self,RTC_TimerDef *child)
{
_DINT();
RTC_Delay2us;
self->RTCYEAR = child->Year;
RTC_Delay2us;
self->RTCMON = child->Month;
RTC_Delay2us;
self->RTCDOW = child->DayOfWeek;
RTC_Delay2us;
self->RTCDAY = child->Day;
RTC_Delay2us;
self->RTCHOUR = child->Hour;
RTC_Delay2us;
self->RTCMIN = child->Minute;
RTC_Delay2us;
self->RTCSEC = child->Second;
RTC_Delay2us;
_EINT();
} void RTC_TimerGet(RTC_RegisterDef *self,RTC_TimerDef *child)
{
RTC_Delay1us;
child->Year = self->RTCYEAR;
RTC_Delay1us;
child->Month = self->RTCMON;
RTC_Delay1us;
child->DayOfWeek = self->RTCDOW;
RTC_Delay1us;
child->Day = self->RTCDAY;
RTC_Delay1us;
child->Hour = self->RTCHOUR;
RTC_Delay1us;
child->Minute = self->RTCMIN;
RTC_Delay1us;
child->Second = self->RTCSEC;
RTC_Delay1us;
} 總結(jié) 為什么頭文件都定義好了物體層筆者還要去定義物理層呢？為什么要這樣頻繁的使用指針呢？ 很簡(jiǎn)單的回答這個(gè)問題主要有兩點(diǎn)原因： 1）節(jié)約系統(tǒng)內(nèi)存和運(yùn)行時(shí)間，具體筆者不解釋，你懂得 2）方便代碼升級(jí)，提高程序的可移植性，原因體現(xiàn)在rtcReg.h，具體筆者不解釋，如果你懂，我想你懂得。 最近一直試著把這幾年來的學(xué)習(xí)經(jīng)歷轉(zhuǎn)化為文字，許多都是一些個(gè)人見解。若有不同意見，可留言探討。
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