RTC for Philips PCF8563 clock chip. More...
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Functions | |
int | PcfRtcReadRegs (uint8_t reg, uint8_t *buff, size_t cnt) |
Read RTC registers. | |
int | PcfRtcWrite (int nv, CONST uint8_t *buff, size_t cnt) |
Write to RTC registers. | |
int | PcfRtcGetClock (struct _tm *tm) |
Get date and time from an PCF8563 hardware clock. | |
int | PcfRtcSetClock (CONST struct _tm *tm) |
Set an PCF8563 hardware clock. | |
int | PcfRtcGetAlarm (int idx, struct _tm *tm, int *aflgs) |
Get alarm date and time of an PCF8563 hardware clock. | |
int | PcfRtcSetAlarm (int idx, CONST struct _tm *tm, int aflgs) |
Set alarm of an PCF8563 hardware clock. | |
int | PcfRtcGetStatus (uint32_t *sflgs) |
Query RTC status flags. | |
int | PcfRtcClearStatus (uint32_t sflgs) |
Clear RTC status flags. | |
int | PcfRtcInit (void) |
Initialize the interface to an Intersil PCF8563 hardware clock. | |
Variables | |
NUTRTC | rtcPcf8563 |
RTC for Philips PCF8563 clock chip.
* * $Log$ * Revision 1.4 2008/08/11 06:59:42 haraldkipp * BSD types replaced by stdint types (feature request #1282721). * * Revision 1.3 2006/10/05 17:18:49 haraldkipp * Hardware independant RTC layer added. * * Revision 1.2 2006/06/28 17:23:47 haraldkipp * Bugfix. PcfRtcGetClock() returned wrong century. * * Revision 1.1 2006/04/07 13:54:17 haraldkipp * PCF8563 RTC driver added. * * *
Definition in file pcf8563.c.
Read RTC registers.
reg | The first register to read. | |
buff | Pointer to a buffer that receives the register contents. | |
cnt | The number of registers to read. |
Definition at line 83 of file pcf8563.c.
References NUT_WAIT_INFINITE, and TwMasterTransact().
Referenced by PcfRtcGetClock(), and PcfRtcGetStatus().
int PcfRtcWrite | ( | int | nv, | |
CONST uint8_t * | buff, | |||
size_t | cnt | |||
) |
Write to RTC registers.
nv | Must be set to 1 when writing to non-volatile registers. In this case the routine will poll for write cycle completion before returning to the caller. Set to zero if writing to volatile registers. | |
buff | This buffer must contain all bytes to be transfered to the RTC chip, including the register address. | |
cnt | Number of valid bytes in the buffer. |
Definition at line 106 of file pcf8563.c.
References NUT_WAIT_INFINITE, and TwMasterTransact().
Referenced by PcfRtcSetClock().
int PcfRtcGetClock | ( | struct _tm * | tm | ) |
Get date and time from an PCF8563 hardware clock.
tm | Points to a structure that receives the date and time information. |
Definition at line 119 of file pcf8563.c.
References BCD2BIN, PcfRtcReadRegs(), tm::tm_hour, tm::tm_mday, tm::tm_min, tm::tm_mon, tm::tm_sec, tm::tm_wday, and tm::tm_year.
int PcfRtcSetClock | ( | CONST struct _tm * | tm | ) |
Set an PCF8563 hardware clock.
New time will be taken over at the beginning of the next second.
tm | Points to a structure which contains the date and time information. |
Definition at line 149 of file pcf8563.c.
References BIN2BCD, memset(), and PcfRtcWrite().
int PcfRtcGetAlarm | ( | int | idx, | |
struct _tm * | tm, | |||
int * | aflgs | |||
) |
Get alarm date and time of an PCF8563 hardware clock.
Not implemented.
idx | Zero based index. Two alarms are supported. | |
tm | Points to a structure that receives the date and time information. | |
aflgs | Points to an unsigned long that receives the enable flags. |
int PcfRtcSetAlarm | ( | int | idx, | |
CONST struct _tm * | tm, | |||
int | aflgs | |||
) |
Set alarm of an PCF8563 hardware clock.
Not implemented.
idx | Zero based index. Two alarms are supported. | |
tm | Points to a structure which contains the date and time information. May be NULL to clear the alarm. | |
aflgs | Each bit enables a specific comparision.
|
int PcfRtcGetStatus | ( | uint32_t * | sflgs | ) |
Query RTC status flags.
sflgs | Points to an unsigned long that receives the status flags.
|
Definition at line 224 of file pcf8563.c.
References PcfRtcReadRegs(), and RTC_STATUS_PF.
Referenced by PcfRtcInit().
int PcfRtcClearStatus | ( | uint32_t | sflgs | ) |
int PcfRtcInit | ( | void | ) |
Initialize the interface to an Intersil PCF8563 hardware clock.
Definition at line 258 of file pcf8563.c.
References PcfRtcGetStatus(), and TwInit().
NUTRTC rtcPcf8563 |