DateModule.cpp

00001 #include "mbed.h"
00002 #include "DateModule.h"
00003 #include "time_helper.h"
00004 
00005 const char * k_aWeekDays[] = { "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" };
00006 
00007 DateModule::DateModule
00008 (
00009     Serial &    in_cDisplay,
00010     RTclock &   in_cRTclock
00011 )
00012     : Module(in_cDisplay)
00013     , m_cRTclock(in_cRTclock)
00014 {
00015     ::memset(&m_sLastTM,0,sizeof(m_sLastTM));
00016 }
00017 
00018 DateModule::~DateModule()
00019 {
00020 }
00021 
00022 void DateModule::change
00023 (
00024     size_t      in_nIndex,
00025     bool        in_bUp
00026 )
00027 {
00028     tm sTM;
00029     
00030     // to get the current time information
00031     if (!m_cRTclock.getTime(sTM)) GetTime(sTM);
00032     bool bTwelveHour = m_cRTclock.isTwelveHour();
00033 
00034     enum ETime
00035     {
00036         eWeekDay = 0,
00037         eDayTen,
00038         eDaySingle,
00039         eMonthTen,
00040         eMonthSingle,
00041         eYearTen,
00042         eYearSingle,
00043     };    
00044     
00045     switch (in_nIndex)
00046     {
00047         case eWeekDay:      sTM.tm_wday += (in_bUp ? 1 : -1);  break;
00048         case eDayTen:       sTM.tm_mday += (in_bUp ? 1 : -1) * 10;  break;
00049         case eDaySingle:    sTM.tm_mday += (in_bUp ? 1 : -1);  break;
00050         case eMonthTen:     sTM.tm_mon += (in_bUp ? 1 : -1) * 10;  break;
00051         case eMonthSingle:  sTM.tm_mon += (in_bUp ? 1 : -1);  break;
00052         case eYearTen:      sTM.tm_year += (in_bUp ? 1 : -1) * 10;  break;
00053         case eYearSingle:   sTM.tm_year += (in_bUp ? 1 : -1);  break;
00054     }
00055     
00056     if (sTM.tm_wday < 0)    sTM.tm_wday = 0;
00057     if (sTM.tm_wday > 6)    sTM.tm_wday = 6;
00058     if (sTM.tm_mday < 1)    sTM.tm_mday = 1;
00059     if (sTM.tm_mday > 31)   sTM.tm_mday = 31;
00060     if (sTM.tm_mon < 0)     sTM.tm_mon = 0;
00061     if (sTM.tm_mon > 11)    sTM.tm_mon = 11;
00062     if (sTM.tm_year < 2000 - 1900) sTM.tm_year = 2000 - 1900;
00063     if (sTM.tm_year > 2099 - 1900) sTM.tm_year = 2099 - 1900;
00064 
00065     if (m_cRTclock.setTime(sTM,bTwelveHour))
00066     {
00067         m_cRTclock.mapTime();
00068     }
00069     else
00070     {
00071         SetTime(sTM);
00072     }
00073 }
00074   
00075 int DateModule::getCursorOffset(size_t & inout_nIndex)
00076 {
00077     const int k_aCursor[] = { 2, 4, 5, 7, 8, 12, 13 };
00078     
00079     if ((int)inout_nIndex < 0) inout_nIndex = 0;
00080     if (inout_nIndex >= _countof(k_aCursor)) inout_nIndex = _countof(k_aCursor) - 1;
00081        
00082     return k_aCursor[inout_nIndex];
00083 }
00084 
00085 void DateModule::show(bool in_bRefresh)
00086 {
00087     tm sTM;
00088     
00089     // to get the current time information
00090     if (!m_cRTclock.getTime(sTM)) GetTime(sTM);
00091     
00092     // if refreshing - only update if there's a change
00093     if (in_bRefresh)
00094     {
00095         // Check for change based on day (rest is irrelevant)
00096         if (sTM.tm_mday == m_sLastTM.tm_mday) return;
00097     }
00098     
00099     // Ensure internal struct has new TM data
00100     ::memcpy(&m_sLastTM,&sTM,sizeof(m_sLastTM));
00101     m_cDisplay.printf ("%s %02i/%02i/%04i    ", k_aWeekDays[sTM.tm_wday], sTM.tm_mday, sTM.tm_mon + 1, 1900 + sTM.tm_year);
00102 }