timer.c File Reference

Contains system timer ISR for exact time base. More...

#include <avr/io.h>
#include <avr/interrupt.h>
#include "xtypes.h"
#include "global.h"
#include "leds.h"
#include "speed.h"
#include "safety.h"
#include "speaker.h"
#include "timer.h"

Include dependency graph for timer.c:

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Defines
#define	EXPORT
#define	OCR_VALUE   ((F_CPU / 64U) / 1000U) - 1U
	Preload value for system timer.
Functions
	ISR (SIG_OUTPUT_COMPARE2A)
	Service routine for timer interrupt.
void	timer_Init (void)
	Timer module init function.
UINT8	timer_GetTicks (void)
	Get method for mg_u8TicksOut.
void	timer_LockTicks (void)
	Function to create a copy of the time flags.
UINT32	timer_GetSystemTime (void)
	Get method for mg_u32SystemTime.
Variables
static volatile UINT32	mg_u32SystemTime = 0U
	Variable to hold the system time in ms.
static volatile UINT8	mg_u8Ticks = NO_TICK
	Variable to keep time flags.
static UINT8	mg_u8TicksOut = NO_TICK
	Variable used to share time flags with other modules.

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Detailed Description

Author:

Philipp Bank

Copyright:

Creative Commons by-nc-sa 3.0 (http://creativecommons.org/licenses/by-nc-sa/3.0/)

This module provides an exact time base for time relevant calculations (revolutions per minute, distance, timeouts) and some flags to execute specific operations at regular intervals.

Definition in file timer.c.