stm32_ota/SYSTEM/PVD/pvd.c

#include "pvd.h"		 
#include "sysport.h"
#include "stm32f10x_pwr.h"
#include "stm32f10x_bkp.h"

/********************************************************************************
  * @file    pvd.c
  * @author  <EFBFBD>̳ϿƼ<EFBFBD>  Mr.Wang
  * @version V1.0.0
  * @date    11-Dec-2018
  * @brief   pvd<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
  ******************************************************************************
*******************************************************************************/

/*****************************************
*<EFBFBD><EFBFBD><EFBFBD>ڲ<EFBFBD>ʹ<EFBFBD>õij<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
****************************************/
							    
  
/**************************************************************************************************
* <EFBFBD><EFBFBD>    <EFBFBD>ƣ<EFBFBD>  void Delay_Us(u32 nus)
* <EFBFBD><EFBFBD>    <EFBFBD>ܣ<EFBFBD>  <EFBFBD><EFBFBD>ʱnus
* <EFBFBD><EFBFBD><EFBFBD>ڲ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
*           @param nus    Ҫ<EFBFBD><EFBFBD>ʱ<EFBFBD><EFBFBD>us<EFBFBD><EFBFBD><EFBFBD><EFBFBD>û<EFBFBD><EFBFBD>ϵͳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
* ˵    <EFBFBD><EFBFBD><EFBFBD><EFBFBD>  nus:0~59652323(<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֵ<EFBFBD><EFBFBD>2^32/fac_us@fac_us=72)	    59652323
*************************************************************************************************/ 								   
void Pvd_Init( EXTITrigger_TypeDef exitTrigger, IntPriority_e ePriority)
{
		/*<2A><><EFBFBD><EFBFBD>EXIT<49><54><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҫ <20><><EFBFBD><EFBFBD>AFIOʱ<4F><CAB1><EFBFBD>ҳ<EFBFBD>ʼ<EFBFBD><CABC> EXIT<49><54>NVIC*/
		EXTI_InitTypeDef EXTI_InitStructure ;                //EXIT<49><54><EFBFBD><EFBFBD> <20>ṹ<EFBFBD>嶨<EFBFBD><E5B6A8>	
		NVIC_InitTypeDef NVIC_InitStructure ;	               //NVIC<49><43><EFBFBD><EFBFBD> <20>ṹ<EFBFBD>嶨<EFBFBD><E5B6A8>
		RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE); //GPIO EXIT<49><54><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҫ<EFBFBD><D2AA><EFBFBD><EFBFBD>AFIOʱ<4F><CAB1>

		EXTI_InitStructure.EXTI_Line    = EXTI_Line16 ;	           //<2F>ж<EFBFBD><D0B6><EFBFBD><EFBFBD><EFBFBD>
		EXTI_InitStructure.EXTI_Mode    = EXTI_Mode_Interrupt ;	   //<2F>ж<EFBFBD>ģʽ
		EXTI_InitStructure.EXTI_Trigger = exitTrigger ;            //IO<49>ⲿ<EFBFBD>жϴ<D0B6><CFB4><EFBFBD><EFBFBD><EFBFBD>ʽ
		EXTI_InitStructure.EXTI_LineCmd = ENABLE;
		EXTI_Init( &EXTI_InitStructure );					
		/*<2A><><EFBFBD>жϱ<D0B6>־λ<D6BE><CEBB><EFBFBD>ٿ<EFBFBD><D9BF>ж<EFBFBD>*/		
		EXTI_ClearITPendingBit( EXTI_Line16); 

		NVIC_InitStructure.NVIC_IRQChannel = PVD_IRQn ;			         
		NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = ePriority ;	//<2F><>ռ<EFBFBD><D5BC><EFBFBD>ȼ<EFBFBD><C8BC><EFBFBD><EFBFBD><EFBFBD> 
		NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0 ;					        //freertos<6F><73><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȼ<EFBFBD>
		NVIC_InitStructure.NVIC_IRQChannelCmd = DISABLE ;						        //ʧ<><CAA7><EFBFBD>ⲿ<EFBFBD>ж<EFBFBD>ͨ<EFBFBD><CDA8>
		NVIC_Init(&NVIC_InitStructure);                                     //<2F>ж<EFBFBD>NVIC<49><43><EFBFBD><EFBFBD>
		NVIC_EnableIRQ(PVD_IRQn) ;

		PWR_PVDLevelConfig(PWR_PVDLevel_2V8) ;
		PWR_PVDCmd(ENABLE) ;
}

//void PVD_IRQHandler(void)
//{
//if( EXTI_GetFlagStatus(EXTI_Line16) != RESET )
//	{
//	EXTI_ClearITPendingBit(EXTI_Line16);  
//	WriteLogToFlash("Pvd Irq!") ;
//  SysErr("Pvd Irq!") ;
//	}
//}

void PWR_PVD_Init(void)
{ 
		NVIC_InitTypeDef NVIC_InitStructure; 
		EXTI_InitTypeDef EXTI_InitStructure; 
		RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR, ENABLE);//ʹ<><CAB9>PWRʱ<52><CAB1> 
		NVIC_InitStructure.NVIC_IRQChannel = PVD_IRQn; //ʹ<><CAB9>PVD<56><44><EFBFBD>ڵ<EFBFBD><DAB5>ⲿ<EFBFBD>ж<EFBFBD>ͨ<EFBFBD><CDA8> 
		NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;//<2F><>ռ<EFBFBD><D5BC><EFBFBD>ȼ<EFBFBD>1
		NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0; //<2F><><EFBFBD><EFBFBD><EFBFBD>ȼ<EFBFBD>0
		NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //ʹ<><CAB9><EFBFBD>ⲿ<EFBFBD>ж<EFBFBD>ͨ<EFBFBD><CDA8> 
		NVIC_Init(&NVIC_InitStructure); EXTI_StructInit(&EXTI_InitStructure);
	
		EXTI_InitStructure.EXTI_Line = EXTI_Line16; //PVD<56><44><EFBFBD>ӵ<EFBFBD><D3B5>ж<EFBFBD><D0B6><EFBFBD>16<31><36> 
		EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt; //ʹ<><CAB9><EFBFBD>ж<EFBFBD>ģʽ 
		EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising; //<2F><>ѹ<EFBFBD><D1B9><EFBFBD>ڷ<EFBFBD>ֵʱ<D6B5><CAB1><EFBFBD><EFBFBD><EFBFBD>ж<EFBFBD> 
		EXTI_InitStructure.EXTI_LineCmd = ENABLE; //ʹ<><CAB9><EFBFBD>ж<EFBFBD><D0B6><EFBFBD> 
		EXTI_Init(&EXTI_InitStructure); //<2F><>ʼ 
		PWR_PVDLevelConfig(PWR_PVDLevel_2V8);//<2F>趨<EFBFBD><E8B6A8><EFBFBD>ط<EFBFBD>ֵ 
		PWR_PVDCmd(ENABLE);//ʹ<><CAB9>PVD 
} 
u16  num = 0 ;
void PVD_IRQHandler(void) 
{ 
		EXTI_ClearITPendingBit(EXTI_Line16);//<2F><><EFBFBD>ж<EFBFBD> 
//		num = BKP_ReadBackupRegister(BKP_DR10); 
//		num++; //<2F>û<EFBFBD><C3BB><EFBFBD><EFBFBD>ӽ<EFBFBD><D3BD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>봦 
//		RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR | RCC_APB1Periph_BKP, ENABLE);//ʹ<><CAB9>PWR<57><52>BKP<4B><50><EFBFBD><EFBFBD>ʱ<EFBFBD><CAB1> 
//		PWR_BackupAccessCmd(ENABLE);//ʹ<>ܺ󱸼Ĵ<F3B1B8BC><C4B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 
//		BKP_WriteBackupRegister(BKP_DR1, num);//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 
}
			
//uint16_t power_time = 0 ;
//void PVD_IRQHandler(void) 
//{	
//	EXTI_ClearITPendingBit(EXTI_Line16);//<2F><><EFBFBD>ж<EFBFBD> 
//	RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR , ENABLE);//ʹ<><CAB9>PWR<57><52>BKP<4B><50><EFBFBD><EFBFBD>ʱ<EFBFBD><CAB1> 
//	PWR_BackupAccessCmd(ENABLE);                        //ʹ<>ܺ󱸼Ĵ<F3B1B8BC><C4B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 
//	while(1) 
//		{ 
//			power_time++; 
//		  BKP_WriteBackupRegister(BKP_DR14, power_time) ;			
//		} 
//}