stm32103C8T6 PVD保存数据不成功？

huangyangquan · 发表于 2018-7-7 10:54:40

我的问题是这样的分两种情况
1.我在用JTAG调试的时候调试着，然后拔掉JTAG，然后关电源。那么以后都能进入PVD_IRQHandler 中断掉电保存了。
2.如果我是先关电源，然后拔掉JTAG，就不能进入PVD_IRQHandler ，保存数据。
贴上代码
[mw_shl_code=applescript,true]void PWR_PVD_Init(void)
{
NVIC_InitTypeDef NVIC_InitStructure;
EXTI_InitTypeDef EXTI_InitStructure;

//RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR, ENABLE);//使能PWR时钟
RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR | RCC_APB1Periph_BKP, ENABLE);//使能PWR和BKP外设时钟

NVIC_InitStructure.NVIC_IRQChannel = PVD_IRQn;          //使能PVD所在的外部中断通道
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;//抢占优先级1
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;    //子优先级0
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;       //使能外部中断通道
NVIC_Init(&NVIC_InitStructure);

EXTI_StructInit(&EXTI_InitStructure);
EXTI_InitStructure.EXTI_Line = EXTI_Line16;          //PVD连接到中断线16上
EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;    //使用中断模式
EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising;  //电压低于阀值时产生中断
EXTI_InitStructure.EXTI_LineCmd = ENABLE;             //使能中断线
EXTI_Init(&EXTI_InitStructure);                      //初始

EXTI_ClearITPendingBit(EXTI_Line16);//清中断
PWR_PVDLevelConfig(PWR_PVDLevel_2V9);//设定监控阀值
PWR_PVDCmd(ENABLE);//使能PVD
}

void PVD_IRQHandler(void)
{
EXTI_ClearITPendingBit(EXTI_Line16);//清中断
WriteAccountFlash();
//Sw_Lamp(0,1);
//NIVC_GenerateReset();
while(1);

}

//线擦除
void Init_FlashP(u32 address)
{
  Erase_Flash(address);
}

//保存账目
void WriteAccountFlash(void)
{
u16 buf[50];
memcpy(&buf[0],&CreanZoren,4);
memcpy(&buf[2],&GameRunSt.Address,4);
STMFLASH_Write(ACCTION_ADDR,buf,50);

}

//读账目
void ReadAccountFlash(void)
{
u16 buf[50];
STMFLASH_Read(ACCTION_ADDR,buf,50);
memcpy(&CreanZoren,                &buf[0],4);
memcpy(&GameRunSt.Address,          &buf[2],4);
Init_FlashP(ACCTION_ADDR);

}

//开机读数据出来
void CreanZore(void)
{
//GameRunSt.Address=0;
ReadAccountFlash();
if(CreanZoren!=CREANFALG)
{
      CreanZoren=CREANFALG;
GameRunSt.Address=36;
WriteAccountFlash();
}

}
[/mw_shl_code]