2018年10月20日 | STM32F105VC 低功耗

STOP模式：

static void RCC_Close(void)

{

RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, DISABLE);

RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA |RCC_APB2Periph_GPIOB

|RCC_APB2Periph_GPIOC |RCC_APB2Periph_GPIOD |RCC_APB2Periph_GPIOE

|RCC_APB2Periph_ADC1  |RCC_APB2Periph_AFIO |RCC_APB2Periph_ADC2

|RCC_APB2Periph_SPI1, DISABLE );

RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2|RCC_APB1Periph_UART4

|RCC_APB1Periph_TIM2 | RCC_APB1Periph_SPI2

|RCC_APB1Periph_CAN1 | RCC_APB1Periph_CAN2, DISABLE );

RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA , ENABLE );

ADC_Cmd(ADC1, DISABLE); ADC_Cmd(ADC2, DISABLE); 

ADC_DMACmd(ADC1, DISABLE); DMA_Cmd(DMA1_Channel1, DISABLE); 

USART_Cmd(UART4, DISABLE);USART_Cmd(USART2, DISABLE);

SPI_Cmd(SPI2,DISABLE);

TIM_Cmd(TIM2,DISABLE);TIM_ITConfig(TIM2, TIM_IT_Update, DISABLE);

CAN_DeInit(CAN1);CAN_DeInit(CAN2);

ADC_DeInit(ADC1);

USART_DeInit(USART2);USART_DeInit(UART4);

SPI_I2S_DeInit(SPI1);SPI_I2S_DeInit(SPI2);

DMA_DeInit(DMA1_Channel1);

TIM_DeInit(TIM2);

}

static void RTC_Config(u16 value)

{

EXTI_InitTypeDef EXTI_InitStructure;

NVIC_InitTypeDef NVIC_InitStructure; 

BKP_DeInit();

RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR|RCC_APB1Periph_BKP,ENABLE);

PWR_BackupAccessCmd(ENABLE);

RCC_LSICmd(ENABLE);

while(RCC_GetFlagStatus(RCC_FLAG_LSIRDY) == RESET);

RCC_RTCCLKConfig(RCC_RTCCLKSource_LSI);//Ñ¡ÔñÄÚ²¿40KRC

RCC_RTCCLKCmd(ENABLE);

RTC_WaitForSynchro();

RTC_WaitForLastTask();

RTC_SetPrescaler(39999);

RTC_WaitForLastTask();

RTC_SetAlarm(RTC_GetCounter() + value);

RTC_WaitForLastTask();

RTC_ITConfig(RTC_IT_ALR,ENABLE);

RTC_WaitForLastTask();

EXTI_InitStructure.EXTI_Line = EXTI_Line17;

EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;

EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;

EXTI_InitStructure.EXTI_LineCmd = ENABLE;

EXTI_Init(&EXTI_InitStructure); 

EXTI_ClearFlag(EXTI_Line17);

EXTI_ClearITPendingBit(EXTI_Line17);

NVIC_InitStructure.NVIC_IRQChannel = RTCAlarm_IRQn;

NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;

NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;

NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;

NVIC_Init(&NVIC_InitStructure);  

}      

void RTCAlarm_IRQHandler(void)

{

// ÇåEXTI_Line17¹ÒÆðλ

EXTI_ClearITPendingBit(EXTI_Line17);

// ¼ì²é»½ÐѱêÖ¾ÊÇ·ñÉèÖÃ

if(PWR_GetFlagStatus(PWR_FLAG_WU) != RESET)

{

PWR_ClearFlag(PWR_FLAG_WU);// Çå³ý»½ÐѱêÖ¾

}

RTC_WaitForLastTask();

RTC_ClearITPendingBit(RTC_IT_ALR);// ÇåRTC±¨¾¯ÖжϹÒÆð

}

typedef void (*pFunction) (void );

void jump(unsigned long add)

{

pFunction pMyaddr = (pFunction)add;

pMyaddr();

}

void STM32StopMode(void)

{

GPIO_InitTypeDef GPIO_InitStructure;

u32 jmp_add;

if(!EnterStopMode_Flag)

{

EnterStopMode_Flag = 1;//1±íʾÒѾ­½øÈëµÍ¹¦ºÄ

GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_All;  

GPIO_Init(GPIOC, &GPIO_InitStructure);

GPIO_Init(GPIOB, &GPIO_InitStructure);  

GPIO_Init(GPIOD, &GPIO_InitStructure);  

GPIO_Init(GPIOE, &GPIO_InitStructure);  

GPIO_InitStructure.GPIO_Pin = 0Xfffe;

GPIO_Init(GPIOA, &GPIO_InitStructure);  

GPIO_InitStructure.GPIO_Pin =  GPIO_Pin_0 ;

GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;

GPIO_Init(GPIOA, &GPIO_InitStructure);

RCC_Close();

RTC_Config(10);

RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR|RCC_APB1Periph_BKP,ENABLE);

PWR_BackupAccessCmd(ENABLE);

PWR_EnterSTOPMode(PWR_Regulator_LowPower,PWR_STOPEntry_WFI);

// System_Reset() ;

//    jmp_add=*(unsigned long*)(0x8008004);

// __set_MSP(*(__IO uint32_t*)0x8008000);

// jump(jmp_add);

}

}

void RTC_IRQHandler(void)

{

while(1);

}

STOP模式唤醒后是从停止的地址开始运行，仿真和实际运行不同，仿真时不会进入低功耗，相当于 进入低功耗又被唤醒了。