Clock.cpp

00001 #include "Clock.h"
00002 
00003 
00004 Clock::Clock() : timezone(UTC) {
00005     set_time(1388534400);
00006 }
00007 
00008 void Clock::setAlarmThread(Thread *aThread) {
00009     alarmThread = aThread;
00010 }
00011 
00012 /**
00013  * Sets the time and stores it in UTC time
00014  */
00015 void Clock::setTime(int hour, int minute, int period) {
00016     time_t rawtime = time(NULL);
00017     struct tm *timeinfo = localtime(&rawtime);
00018     if (hour == 12)
00019         hour = 0;
00020     timeinfo->tm_hour = (((period == AM) ? hour : (hour + 12)) - timezone) % 24;
00021     timeinfo->tm_min = minute;
00022     timeinfo->tm_sec = 0;
00023     set_time(mktime(timeinfo));
00024 }
00025 
00026 /**
00027  * Sets the timezone. Since the time is stored in UTC, the system time 
00028  * is not modified
00029  */
00030 void Clock::setTimezone(int timezone) {
00031     
00032     this->timezone = timezone;
00033 }
00034 
00035 /**
00036  * Uses an NTP Client to set the time to UTC
00037  */
00038 int Clock::syncTime() {
00039     NTPClient ntp;
00040     return ntp.setTime("0.pool.ntp.org");
00041 }
00042 
00043 void Clock::setAlarm(int hour, int minute, int period) {
00044     time_t currentTime = getTime();
00045     struct tm *timeinfo = localtime(&currentTime);
00046     if (hour == 12)
00047         hour = 0;
00048     hour = ((period == AM) ? hour : (hour + 12)) % 24;
00049     if (hour <= timeinfo->tm_hour && minute <= timeinfo->tm_hour) {
00050         (timeinfo->tm_mday)++;
00051     }
00052     timeinfo->tm_hour = hour;
00053     timeinfo->tm_min = minute;
00054     timeinfo->tm_sec = 0;
00055     time_t alarmTime = mktime(timeinfo);
00056     alarmTicker.attach(this, &Clock::signalAlarm, difftime(alarmTime, currentTime));
00057     aSet = true;
00058 }
00059 
00060 bool Clock::alarmSet() {
00061     return aSet;
00062 }
00063 
00064 void Clock::setTimer(int hours, int minutes) {
00065     alarmTicker.attach(this, &Clock::signalAlarm, hours * 3600 + minutes * 60);
00066     aSet = true;
00067 }
00068 
00069 void Clock::deleteAlarm() {
00070     alarmTicker.detach();
00071     aSet = false;
00072 }
00073 
00074 /**
00075  * Gets the system time in UTC and converts it according to the given timezone
00076  */
00077 time_t Clock::getTime() {
00078     time_t rawtime = time(NULL);
00079     struct tm *timeinfo = localtime(&rawtime);
00080     timeinfo->tm_hour = (timeinfo->tm_hour + timezone) % 24;
00081     return mktime(timeinfo);
00082 }
00083 
00084 int Clock::getTimezone() {
00085     return timezone;
00086 }
00087 
00088 void Clock::signalAlarm() {
00089     alarmThread->signal_set(0x1);
00090     alarmTicker.detach();
00091     aSet = false;
00092 }
00093 
00094