RTC

Real Time Clock. More...

Macros
#define	CMOS_ADDRESS   0x70
	CMOS address port.
#define	CMOS_DATA   0x71
	CMOS data port.

Functions
void	rtc_read (struct tm *time)
	Reads the current time from the RTC.

Detailed Description

Real Time Clock.

The RTC driver provides functions to read the current time from the CMOS RTC.

See also

OSDev CMOS

Macro Definition Documentation

CMOS_ADDRESS

#define CMOS_ADDRESS   0x70

CMOS address port.

Definition at line 20 of file rtc.h.

CMOS_DATA

#define CMOS_DATA   0x71

CMOS data port.

Definition at line 25 of file rtc.h.

Function Documentation

rtc_read()

void rtc_read

(

struct tm *

time

)

Reads the current time from the RTC.

Parameters

time	Pointer to a struct tm to store the current time. If NULL, the function does nothing.

Definition at line 15 of file rtc.c.

References bcd_to_bin(), cmos_read(), NULL, and time().

Referenced by timer_init().