hibernatertc.c

easyARM8962 定时器RTC实验操作源码

/****************************************Copyright (c)****************************************************
**                            Guangzhou ZHIYUAN electronics Co.,LTD.
**                                      
**                                 http://www.embedtools.com
**
**--------------File Info---------------------------------------------------------------------------------
** File name:               hibernateRTC.c
** Latest modified Date:    2007-09-16
** Latest Version:          1.0
** Descriptions:            The hibernate function example template
**
**--------------------------------------------------------------------------------------------------------
** Created by:              Zhao shimin
** Created date:            2007-09-16
** Version:                 1.0
** Descriptions:            The original version
**
**--------------------------------------------------------------------------------------------------------
** Modified by:             
** Modified date:           
** Version:                 
** Descriptions:            
**
*********************************************************************************************************/

/*  系统库函数头文件　　*/
#include "hw_ints.h"
#include "hw_memmap.h"
#include "hw_types.h"
#include "gpio.h"
#include "sysctl.h"
#include "hibernate.h"
#include "interrupt.h"
/********************************************************************************************************/
#define   PIN1        GPIO_PIN_4                                         /*  PA4控制LED　　             */
#define   PIN2        GPIO_PIN_5                                         /*  PA5控制LED　　             */
#define   PINS       (PIN1 | PIN2)
#define   HIBCTL   (*(volatile unsigned long *) 0x400FC010)              /*  休眠控制寄存器             */
/********************************************************************************************************/

/*********************************************************************************************************
** Function name:           HIBRTCMatch0wake 
**
** Descriptions:            用wake管脚唤醒中断服务程序，用于唤醒CPU
**
** input parameters:        NONE
** output parameters:       NONE
**
** Returned value:          NONE
**
** Created by:              Zhao shimin
** Created Date:            2007/09/16
**--------------------------------------------------------------------------------------------------------
** Modified by:
** Modified date:
**--------------------------------------------------------------------------------------------------------
*********************************************************************************************************/

void HIBRTCMatch0wake (void)
{
   
   HIBCTL &= ~(1<<1);                                                   /*  清除休眠标志                */
   /*  清除所有休眠中断标志    */
   HibernateIntClear(HIBERNATE_INT_PIN_WAKE    | HIBERNATE_INT_LOW_BAT |
	                 HIBERNATE_INT_RTC_MATCH_0 | HIBERNATE_INT_RTC_MATCH_1);
   
   HibernateRTCSet(0);                                                  /*  RTC计数初值设为0            */
   GPIOPinWrite(GPIO_PORTA_BASE, PIN2, ~PIN2);

}


/*********************************************************************************************************
** Function name:           main
**
** Descriptions:            主函数初始化休眠模块，使LED闪烁并进入休眠状态
**
** input parameters:        NONE
** output parameters:       NONE
**
** Returned value:          NONE
**
** Created by:              Zhao shimin
** Created Date:            2007/09/16
**--------------------------------------------------------------------------------------------------------
** Modified by:
** Modified date:
**--------------------------------------------------------------------------------------------------------
*********************************************************************************************************/

int main (void)
{
    unsigned long    i, k;
	
    SysCtlPeripheralEnable(SYSCTL_PERIPH_HIBERNATE);                    /*  给休眠模块提供时钟          */
    SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOA);                        /*  给GPIOA提供时钟             */

    GPIOPadConfigSet(GPIO_PORTA_BASE, PINS, GPIO_STRENGTH_2MA,
                     GPIO_PIN_TYPE_STD);                                /*  设置管脚为上拉驱动          */
    GPIODirModeSet(GPIO_PORTA_BASE, PINS, GPIO_DIR_MODE_OUT);           /*  设置管脚为输出              */
	
    HibernateEnable();                                                  /*  使能休眠模块                */
    HibernateClockSelect(HIBERNATE_CLOCK_SEL_DIV128);                   /*  对输入时钟进行128分频       */
   
    HibernateRTCEnable();                                               /*  RTC使能                     */
    HibernateRTCSet(0);	
    for( i = 0 ;i < 20000; i++);                                        /*  延时用于休眠模块寄存器写操作*/
    HibernateRTCMatch0Set(HibernateRTCGet() + 10);                      /*  设定匹配值10s               */
    for( i = 0 ;i < 20000; i++);                                        /*  延时用于休眠模块寄存器写操作*/

    HibernateWakeSet(HIBERNATE_WAKE_RTC);                               /*  设置RTC匹配唤醒        　   */
    HibernateIntEnable(HIBERNATE_INT_RTC_MATCH_0);                      /*  使能RTC匹配唤醒             */
 
    /*  清除休眠模块的所有中断源的中断标志            */
    HibernateIntClear(HIBERNATE_INT_PIN_WAKE    | HIBERNATE_INT_LOW_BAT |
                      HIBERNATE_INT_RTC_MATCH_0 | HIBERNATE_INT_RTC_MATCH_1);
	
    IntEnable(INT_HIBERNATE);                                           /*  允许休眠模块中断            */
    IntMasterEnable();                                                  /*  开放总中断                  */
		 
    while (1)  {

	    for (k = 0; k < 16; k++) {
                for (i = 0; i < 200000; i++);
                GPIOPinWrite(GPIO_PORTA_BASE, PIN1, ~PIN1);
                for (i = 0; i < 200000; i++);
                GPIOPinWrite(GPIO_PORTA_BASE, PIN1, PIN1);

        }
                                                    
        GPIOPinWrite(GPIO_PORTA_BASE, PIN2, PIN2);     
        HibernateRequest();                                             /*  使CPU进入休眠状态           */ 
   }

}
/*********************************************************************************************************
  END FILE
*********************************************************************************************************/