rtc.h File Reference

CMOS Real-Time Clock (RTC) More...

#include <pic8259.h>

Go to the source code of this file.

Macros
#define	RTC_IRQ   8
	RTC IRQ.
#define	RTC_INT   IRQ_INT ( RTC_IRQ )
	RTC interrupt vector.
#define	CMOS_ADDRESS   0x70
	CMOS/RTC address (and NMI) register.
#define	CMOS_DISABLE_NMI   0x80
	NMI disable bit.
#define	CMOS_DATA   0x71
	CMOS/RTC data register.
#define	RTC_SEC   0x00
	RTC seconds.
#define	RTC_MIN   0x02
	RTC minutes.
#define	RTC_HOUR   0x04
	RTC hours.
#define	RTC_WDAY   0x06
	RTC weekday.
#define	RTC_MDAY   0x07
	RTC day of month.
#define	RTC_MON   0x08
	RTC month.
#define	RTC_YEAR   0x09
	RTC year.
#define	RTC_STATUS_A   0x0a
	RTC status register A.
#define	RTC_STATUS_A_UPDATE_IN_PROGRESS   0x80
	RTC update in progress bit.
#define	RTC_STATUS_B   0x0b
	RTC status register B.
#define	RTC_STATUS_B_24_HOUR   0x02
	RTC 24 hour format bit.
#define	RTC_STATUS_B_BINARY   0x04
	RTC binary mode bit.
#define	RTC_STATUS_B_PIE   0x40
	RTC Periodic Interrupt Enabled bit.
#define	RTC_STATUS_C   0x0c
	RTC status register C.
#define	RTC_STATUS_D   0x0d
	RTC status register D.
#define	CMOS_DEFAULT_ADDRESS   RTC_STATUS_D
	CMOS default address.

Functions
	FILE_LICENCE (GPL2_OR_LATER_OR_UBDL)

Detailed Description

CMOS Real-Time Clock (RTC)

The CMOS/RTC registers are documented (with varying degrees of accuracy and consistency) at

http://www.nondot.org/sabre/os/files/MiscHW/RealtimeClockFAQ.txt http://wiki.osdev.org/RTC http://wiki.osdev.org/CMOS

Definition in file rtc.h.

Macro Definition Documentation

RTC_IRQ

#define RTC_IRQ   8

RTC IRQ.

Definition at line 21 of file rtc.h.

Referenced by rtc_entropy_disable(), and rtc_entropy_enable().

RTC_INT

#define RTC_INT   IRQ_INT ( RTC_IRQ )

RTC interrupt vector.

Definition at line 24 of file rtc.h.

Referenced by rtc_hook_isr(), and rtc_unhook_isr().

CMOS_ADDRESS

#define CMOS_ADDRESS   0x70

CMOS/RTC address (and NMI) register.

Definition at line 27 of file rtc.h.

Referenced by rtc_disable_int(), rtc_enable_int(), rtc_hook_isr(), and rtc_readb().

CMOS_DISABLE_NMI

#define CMOS_DISABLE_NMI   0x80

NMI disable bit.

Definition at line 30 of file rtc.h.

Referenced by rtc_disable_int(), and rtc_enable_int().

CMOS_DATA

#define CMOS_DATA   0x71

CMOS/RTC data register.

Definition at line 33 of file rtc.h.

Referenced by rtc_disable_int(), rtc_enable_int(), rtc_hook_isr(), and rtc_readb().

RTC_SEC

#define RTC_SEC   0x00

RTC seconds.

Definition at line 36 of file rtc.h.

Referenced by rtc_read_time().

RTC_MIN

#define RTC_MIN   0x02

RTC minutes.

Definition at line 39 of file rtc.h.

Referenced by rtc_read_time().

RTC_HOUR

#define RTC_HOUR   0x04

RTC hours.

Definition at line 42 of file rtc.h.

Referenced by rtc_read_time().

RTC_WDAY

#define RTC_WDAY   0x06

RTC weekday.

Definition at line 45 of file rtc.h.

RTC_MDAY

#define RTC_MDAY   0x07

RTC day of month.

Definition at line 48 of file rtc.h.

Referenced by rtc_read_time().

RTC_MON

#define RTC_MON   0x08

RTC month.

Definition at line 51 of file rtc.h.

Referenced by rtc_read_time().

RTC_YEAR

#define RTC_YEAR   0x09

RTC year.

Definition at line 54 of file rtc.h.

Referenced by rtc_read_time().

RTC_STATUS_A

#define RTC_STATUS_A   0x0a

RTC status register A.

Definition at line 57 of file rtc.h.

Referenced by rtc_is_busy(), and rtc_read_time().

RTC_STATUS_A_UPDATE_IN_PROGRESS

#define RTC_STATUS_A_UPDATE_IN_PROGRESS   0x80

RTC update in progress bit.

Definition at line 60 of file rtc.h.

Referenced by rtc_is_busy().

RTC_STATUS_B

#define RTC_STATUS_B   0x0b

RTC status register B.

Definition at line 63 of file rtc.h.

Referenced by rtc_disable_int(), rtc_enable_int(), and rtc_read_time().

RTC_STATUS_B_24_HOUR

#define RTC_STATUS_B_24_HOUR   0x02

RTC 24 hour format bit.

Definition at line 66 of file rtc.h.

Referenced by rtc_read_time().

RTC_STATUS_B_BINARY

#define RTC_STATUS_B_BINARY   0x04

RTC binary mode bit.

Definition at line 69 of file rtc.h.

Referenced by rtc_read_time().

RTC_STATUS_B_PIE

#define RTC_STATUS_B_PIE   0x40

RTC Periodic Interrupt Enabled bit.

Definition at line 72 of file rtc.h.

Referenced by rtc_disable_int(), and rtc_enable_int().

RTC_STATUS_C

#define RTC_STATUS_C   0x0c

RTC status register C.

Definition at line 75 of file rtc.h.

Referenced by rtc_enable_int(), and rtc_hook_isr().

RTC_STATUS_D

#define RTC_STATUS_D   0x0d

RTC status register D.

Definition at line 78 of file rtc.h.

CMOS_DEFAULT_ADDRESS

#define CMOS_DEFAULT_ADDRESS   RTC_STATUS_D

CMOS default address.

Definition at line 81 of file rtc.h.

Referenced by rtc_disable_int(), and rtc_enable_int().

Function Documentation

FILE_LICENCE()

FILE_LICENCE

(

GPL2_OR_LATER_OR_UBDL

)