Time

Time functions. More...

Defines
#define	SIXTEENTH_SECOND   1
	A sixteenth of a second.
#define	EIGTH_SECOND   2
	An eighth of a second.
#define	QUARTER_SECOND   4
	A quarter of a second.
#define	HALF_SECOND   8
	Half of a second.
#define	SECOND   16
	One second.
#define	TWO_SECOND   32
	Two seconds.
#define	FOUR_SECOND   64
	Four seconds.
Functions
void	delay_ms (int ms)
	Delay execution for the specified time.
void	rtc_init (int prescale_opt, void(*rtc_func)(void))
	Enable the realtime clock.
int	rtc_get (void)
	Get the value of the realtime clock.
void	rtc_reset (void)
	Reset the counter of the realtime clock.

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Detailed Description

Time functions.

Functions dealing with time.

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Function Documentation

void delay_ms (  int  ms  )

Delay execution for the specified time. Delays for the specified number of milliseconds. The accuracy of this function is unknown. Parameters: ms  the number of milliseconds to delay for

int rtc_get (  void   )

Get the value of the realtime clock. Returns the time elapsed in seconds since the last call to rtc_init or rtc_reset. Returns: the number of seconds since the last call to rtc_init or rtc_reset See also: rtc_init, rtc_reset

void rtc_init (  int  prescale_opt, void(*)(void)  rtc_func )

Enable the realtime clock. Initializes the real time clock. Prescales are defined in time.h. For example, SECOND will give 1 second. The specified function is called every clock tick. For the real time clock to activate, interrupts must be enabled. (through sei() ) Parameters: prescale_opt  the period with which the timer is triggered rtc_func  the function called when the timer is triggered See also: rtc_get, rtc_reset

void rtc_reset (  void   )

Reset the counter of the realtime clock. Resets the real time clock counter to 0. See also: rtc_init, rtc_get

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