rtc_helper.cpp File Reference

Detailed Description

Real Time Clock helper.

Date

Feb 5, 2014

Author

Andrey Belomutskiy, (c) 2012-2020

Definition in file rtc_helper.cpp.

Functions
int	_gettimeofday (timeval *tv, void *tzvp)
void PUBLIC_API_WEAK	hal_lld_rtc_fixup (void)
void	initRtc ()
void	printRtcDateTime ()
void	setRtcDateTime (efidatetime_t const *const dateTime)
static time_t	rtc_encode (const RTCDateTime *timespec)
uint32_t	getEpochTime ()
efidatetime_t	getRtcDateTime ()
efidatetime_t	convertRtcDateTimeToEfi (RTCDateTime const *const timespec)
RTCDateTime	convertRtcDateTimeFromEfi (efidatetime_t const *const dateTime)
static void	putTwoSymbolDecimal (int offset, char *destination, int value)
bool	dateToStringShort (char *destination)

Variables
static const char *const	monthAbbrs []

Function Documentation

_gettimeofday()

int _gettimeofday	(	timeval *	tv,
		void *	tzvp
	)

Definition at line 23 of file rtc_helper.cpp.

                                                      {
    (void)tv; (void)tzvp;
    return 0;
}

convertRtcDateTimeFromEfi()

RTCDateTime convertRtcDateTimeFromEfi

(

efidatetime_t const *const

dateTime

)

Definition at line 100 of file rtc_helper.cpp.

                                                                            {
    RTCDateTime timespec;
    timespec.year = dateTime->year - RTC_BASE_YEAR; // ChibiOS year origin is e.g. 1980
    timespec.month = dateTime->month; // [1..12]
    timespec.day = dateTime->day; // [1..31]
    timespec.millisecond = (((dateTime->hour * 60) + dateTime->minute) * 60 + dateTime->second) * 1000; // ms since midnight
    timespec.dayofweek = RTC_DAY_CATURDAY; // CATURDAY: 0 ... ?
    timespec.dstflag = 0; // 0 ... ?
    return timespec;
}

Referenced by setRtcDateTime().

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convertRtcDateTimeToEfi()

efidatetime_t convertRtcDateTimeToEfi

(

RTCDateTime const *const

timespec

)

Definition at line 82 of file rtc_helper.cpp.

                                                                          {
    uint32_t second = timespec->millisecond / 1000;
    uint16_t minute = second / 60;
    second -= minute * 60;
    uint8_t hour = minute / 60;
    minute -= hour * 60;
 
    efidatetime_t const dateTime = {
        .year = timespec->year + RTC_BASE_YEAR,
        .month = (uint8_t)timespec->month,
        .day = (uint8_t)timespec->day,
        .hour = hour,
        .minute = (uint8_t)minute,
        .second = (uint8_t)second,
    };
    return dateTime;
}

Referenced by getRtcDateTime().

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dateToStringShort()

bool dateToStringShort

(

char *

destination

)

Returns

true if we seem to know current date, false if no valid RTC state

Definition at line 131 of file rtc_helper.cpp.

                                          {
#if EFI_RTC
    strcpy(destination, "000000_000000\0");
    efidatetime_t dateTime = getRtcDateTime();
    if (dateTime.year < 2016 || dateTime.year > 2030) {
        // 2016 to 2030 is the valid range
        destination[0] = 0;
        return false;
    }
 
    putTwoSymbolDecimal(0, destination, dateTime.year % 100);       // year, format as just the last two digits
    putTwoSymbolDecimal(2, destination, dateTime.month);            // month    1-12
    putTwoSymbolDecimal(4, destination, dateTime.day);              // day of the month 1-31
 
    putTwoSymbolDecimal(7, destination, dateTime.hour);         // hours since midnight 0-23
    putTwoSymbolDecimal(9, destination, dateTime.minute);           // minutes
    putTwoSymbolDecimal(11, destination, dateTime.second);          // seconds
 
    return true;
#else // EFI_RTC
    destination[0] = 0;
    return false;
#endif // EFI_RTC
}

Referenced by prepareLogFileName().

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getEpochTime()

uint32_t getEpochTime

(

)

Definition at line 70 of file rtc_helper.cpp.

                        {
    RTCDateTime timespec;
    rtcGetTime(&RTCD1, &timespec);
    return rtc_encode(&timespec);
}

Referenced by updateDevConsoleState().

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getRtcDateTime()

efidatetime_t getRtcDateTime

(

)

Definition at line 76 of file rtc_helper.cpp.

                               {
    RTCDateTime timespec;
    rtcGetTime(&RTCD1, &timespec);
    return convertRtcDateTimeToEfi(&timespec);
}

Referenced by canDashboardBmwE90(), dateToStringShort(), onGpsMessage(), and printRtcDateTime().

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hal_lld_rtc_fixup()

void PUBLIC_API_WEAK hal_lld_rtc_fixup

(

void

)

Definition at line 31 of file rtc_helper.cpp.

                                             {
    /* nop */
}

Referenced by initRtc().

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initRtc()

void initRtc

(

)

Definition at line 35 of file rtc_helper.cpp.

               {
    efiPrintf("initRtc()");
    hal_lld_rtc_fixup();
    printDateTime(); // this would test RTC, see #311
}

Referenced by initHardwareNoConfig().

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printRtcDateTime()

void printRtcDateTime

(

)

Definition at line 48 of file rtc_helper.cpp.

                        {
    efidatetime_t dateTime = getRtcDateTime();
    // prints the date like: 19 sep 2022 21:19:55
    efiPrintf("Current RTC time: %02u %s %04lu %02u:%02u:%02u",
            dateTime.day, monthAbbrs[dateTime.month - 1], dateTime.year,
            dateTime.hour, dateTime.minute, dateTime.second);
}

Referenced by printDateTime(), and setDateTime().

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putTwoSymbolDecimal()

static void putTwoSymbolDecimal ( int  offset, char *  destination, int  value  )

static

Definition at line 113 of file rtc_helper.cpp.

                                                                          {
    static char buff[_MAX_FILLER];
    efiAssertVoid(ObdCode::CUSTOM_ERR_6666, value >=0 && value <100, "value");
    itoa10(buff, value);
    if (value < 10) {
        destination[offset] = '0';
        destination[offset + 1] = buff[0];
    } else {
        destination[offset] = buff[0];
        destination[offset + 1] = buff[1];
    }
}

Referenced by dateToStringShort().

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rtc_encode()

static time_t rtc_encode ( const RTCDateTime *  timespec )

static

Definition at line 61 of file rtc_helper.cpp.

                                                      {
  struct tm tim;
 
  // todo: looks like this pulls a lot of library code? 4K+?
  // todo: reimplement lighter? https://github.com/rusefi/rusefi/issues/6876
  rtcConvertDateTimeToStructTm(timespec, &tim, NULL);
  return mktime(&tim);
}

Referenced by getEpochTime().

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setRtcDateTime()

void setRtcDateTime

(

efidatetime_t const *const

dateTime

)

Definition at line 56 of file rtc_helper.cpp.

                                                          {
    RTCDateTime timespec = convertRtcDateTimeFromEfi(dateTime);
    rtcSetTime(&RTCD1, &timespec);
}

Referenced by onGpsMessage(), and setDateTime().

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Variable Documentation

monthAbbrs

const char* const monthAbbrs[]

static

Initial value:

= {
    "Jan", "Feb", "Mar",
    "Apr", "May", "Jun",
    "Jul", "Aug", "Sep",
    "Oct", "Nov", "Dec"
}

Definition at line 41 of file rtc_helper.cpp.

                                         {
    "Jan", "Feb", "Mar",
    "Apr", "May", "Jun",
    "Jul", "Aug", "Sep",
    "Oct", "Nov", "Dec"
};

Referenced by printRtcDateTime().

Go to the source code of this file.