微处理器开发

开发平台：

C/C++

main.c：源码内容

							//  冬眠模块按键唤醒示例
#include  "hw_types.h"
#include  "hw_memmap.h"
#include  "hw_sysctl.h"
#include  "hw_gpio.h"
#include  "hw_hibernate.h"
#include  "sysctl.h"
#include  "gpio.h"
#include  "hibernate.h"
/*  定义LED  */
#define  LED_PORT               SYSCTL_PERIPH_GPIOA
#define  LED_PIN                GPIO_PORTA_BASE , GPIO_PIN_7
#define  ledOn()                GPIOPinWrite(LED_PIN , (0 << 7))
#define  ledOff()               GPIOPinWrite(LED_PIN , (1 << 7))
#define  ledToggle()            GPIOPinWrite(LED_PIN , ~GPIOPinRead(LED_PIN))
int  main(void)
{
    SysCtlLDOSet(SYSCTL_LDO_2_50V);                     		/*  设置LDO输出电压             */
    SysCtlClockSet(SYSCTL_USE_OSC |                    	 		/*  系统时钟设置，采用主振荡器  */
                   SYSCTL_OSC_MAIN |
                   SYSCTL_XTAL_8MHZ |
                   SYSCTL_SYSDIV_1);
    SysCtlPeripheralEnable(LED_PORT);                   		/*  使能LED所在的GPIO端口       */
    GPIOPinTypeGPIOOutput(LED_PIN);                     		/*  设置LED所在管脚为输出       */
    ledOff();                                           		/*  熄灭LED                     */
    SysCtlPeripheralEnable(SYSCTL_PERIPH_HIBERNATE);    		/*  使能冬眠模块                */
    if ( !HibernateIsActive() )                               	/*  如果冬眠模块未被激活        */
    {  
		ledOn();                                        		/*  点亮LED指示灯               */
        HibernateEnableExpClk(SysCtlClockGet());              	/*  使能冬眠                    */
        HibernateClockSelect(HIBERNATE_CLOCK_SEL_DIV128);    	/*  选择4.1943MHz晶体/128       */
		SysCtlDelay(25 * (SysCtlClockGet( ) / 4000)); 
        HibernateWakeSet(HIBERNATE_WAKE_PIN);                 	/*  进入冬眠后采用外部管脚唤醒  */
    }
	SysCtlDelay(2500 * (SysCtlClockGet( ) / 4000)); 
    HibernateRequest();                                       	/*  请求进入冬眠状态            */
    for (;;) 
	{
    }
	
}

						