timetick.h File Reference

#include <stdint.h>

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Functions
uint32_t	TimeTick_Configure (uint32_t dwNew_MCK)
	Configures the SAM3 SysTick & reset tickCount. Systick interrupt handler will generates 1ms interrupt and increase a tickCount. More...
void	TimeTick_Increment (void)
	Handler for Sytem Tick interrupt.
uint32_t	GetTickCount (void)
	Get current Tick Count, in ms.
void	Wait (volatile uint32_t dwMs)
	Sync Wait for several ms.
void	Sleep (volatile uint32_t dwMs)
	Sync Sleep for several ms.

Detailed Description

Purpose

Methods and definitions for Global time tick and wait functions.

Defines a common and simpliest use of Time Tick, to increase tickCount every 1ms, the application can get this value through GetTickCount().

Usage

1. Configure the System Tick with TimeTick_Configure() when MCK changed

   Note

   Must be done before any invoke of GetTickCount(), Wait() or Sleep().

2. Uses GetTickCount to get current tick value.
3. Uses Wait to wait several ms.
4. Uses Sleep to enter wait for interrupt mode to wait several ms.

Function Documentation

uint32_t TimeTick_Configure

(

uint32_t

dwNew_MCK

)

Configures the SAM3 SysTick & reset tickCount. Systick interrupt handler will generates 1ms interrupt and increase a tickCount.

Parameters

dwNew_MCK

Current master clock.