/****************************************Copyright (c)****************************************************
**                            Guangzhou ZHIYUAN electronics Co.,LTD.
**
**                                 http://www.embedtools.com
**
**--------------File Info---------------------------------------------------------------------------------
** File name:           main.c
** Last modified Date:  2010-02-04
** Last Version:        V1.0
** Descriptions:        The main() function example template
**
**--------------------------------------------------------------------------------------------------------
** Created by:          Lanwuqiang
** Created date:        2010-02-05
** Version:             V1.0
** Descriptions:        添加用户应用程序
**
**--------------------------------------------------------------------------------------------------------
** Modified by:         ZhangNingbo
** Modified date:       2010-02-25
** Version:             V1.0
** Descriptions:        16位定时器匹配中断示例程序
**
**--------------------------------------------------------------------------------------------------------
** Modified by:        
** Modified date:      
** Version:            
** Descriptions:       
**
** Rechecked by:
*********************************************************************************************************/
#include "..\config.h"

/*********************************************************************************************************
  宏定义
*********************************************************************************************************/
#define BEEP       (1ul << 7)
#define BEEPOFF()   GPIO2DATA |=  BEEP                                  /*  蜂鸣器关                    */
#define BEEPON()    GPIO2DATA &= ~BEEP                                  /*  蜂鸣器开                    */

/*********************************************************************************************************
** Function name:       myDelay
** Descriptions:        软件延时
** input parameters:    无
** output parameters:   无
** Returned value:      无
*********************************************************************************************************/
void myDelay (INT32U ulTime)
{
    INT32U i;
    
    i = 0;
    while (ulTime--) {
        for (i = 0; i < 5000; i++);
    }
}

/*********************************************************************************************************
* Function Name:        timer0Isr
* Description:          TIMER0 中断处理函数
* Input:                无
* Output:               无
* Return:               无
*********************************************************************************************************/
void timer0Isr (void)
{
    TMR16B0IR = 0x01;                                                   /*  清除中断标志                */
    if (GPIO2DATA & BEEP) { 
        BEEPON();                                                       /*  开启BEEP                    */
    } else {
        BEEPOFF();
    }
}
/*********************************************************************************************************
** Function name:       timer0Init
** Descriptions:        16位定时器0初始化函数
** input parameters:    无
** output parameters:   无
** Returned value:      无
*********************************************************************************************************/
void timer0Init (void)
{
    SYSAHBCLKCTRL |= (1ul << 7);                                        /*  打开定时器模块              */

    TMR16B0IR      = 1;
    TMR16B0PR      = 10000;                                             /*  设置分频系数                */
    TMR16B0MCR     = 3;                                                 /*  设置MR0匹配后复位TC并产生中断*/
    TMR16B0MR0     = FAHBCLK / 10000;                                   /*  设置中断时间                */
    TMR16B0TCR     = 0x01;                                              /*  启动定时器                  */
    zyIsrSet(NVIC_TIMER16B0, (unsigned long)timer0Isr, PRIO_TWO);       /*  设置中断并使能              */
}

/*********************************************************************************************************
** Function name:       main
** Descriptions:        定时器0中断实验。每1秒产生中断，取反蜂鸣器引脚，短接JP8中的BEEP和P2.7
** input parameters:    无
** output parameters:   无
** Returned value:      无
*********************************************************************************************************/
int main (void)
{
    targetInit();                                                       /*  初始化目标板，切勿删除      */
    pinInit();                                                          /*  引脚初始化                  */

    SYSAHBCLKCTRL |= (1ul << 6);
    GPIO2DIR      |= BEEP;

    timer0Init();

    while (1);
}

/*********************************************************************************************************
  End Of File
*********************************************************************************************************/