M451的定时器操作方法

/******************************************************************************

 * [url=home.php?mod=space&uid=288409]@file[/url]     main.c

 * [url=home.php?mod=space&uid=895143]@version[/url]  V1.00

 * $Revision: 4 $

 * $Date: 15/09/02 10:03a $

 * [url=home.php?mod=space&uid=247401]@brief[/url]    NuEdu Basic01 Timer Sample Code

 * @note

 * Copyright (C) 2014~2015 Nuvoton Technology Corp. All rights reserved.

*****************************************************************************/

#include <stdio.h>

#include "M451Series.h"

#include "NuEdu-Basic01.h"



/*---------------------------------------------------------------------------------------------------------*/

/*  TMR0 IRQ handler                                                                                       */

/*---------------------------------------------------------------------------------------------------------*/

uint32_t volatile TimerCounter = 0;

void TMR0_IRQHandler(void)

{

    TimerCounter == 99 ? (TimerCounter = 0) : (TimerCounter++);

    // clear Timer0 interrupt flag

    TIMER_ClearIntFlag(TIMER0);

}

/*---------------------------------------------------------------------------------------------------------*/

/*  MAIN function                                                                                          */

/*---------------------------------------------------------------------------------------------------------*/

int main(void)

{

    //Initial System

    SYS_Init();



    //Enable Timer0 clock and select Timer0 clock source

    CLK_EnableModuleClock(TMR0_MODULE);

    CLK_SetModuleClock(TMR0_MODULE, CLK_CLKSEL1_TMR0SEL_HXT, 0);



    //Initial Timer0 to periodic mode with 2Hz

    TIMER_Open(TIMER0, TIMER_PERIODIC_MODE, 2);

    //Enable Timer0 interrupt

    TIMER_EnableInt(TIMER0);

    NVIC_EnableIRQ(TMR0_IRQn);



    //Initial 7-Segment

    Open_Seven_Segment();



    //Start Timer0

    TIMER_Start(TIMER0);



    while(1)

    {

        Show_Seven_Segment(TimerCounter / 10, 1);

        CLK_SysTickDelay(200);

        Show_Seven_Segment(TimerCounter % 10, 2);

        CLK_SysTickDelay(200);

    }

}



/*** (C) COPYRIGHT 2014~2015 Nuvoton Technology Corp. ***/