stm32 待机模式后出不来请大家帮看看？-astwyg的回答

stm32 待机模式后出不来请大家帮看看？

2019-03-23 20:32发布

各位朋友晚上好  我是一名接触STM32 不久的新手，对32的配置不是很在行由于项目需要用32的片子做低功耗这是我的配置  不知道什地方有问题进入待机模式后用外部中断 usart都无法唤醒请高手指点  拜托了
   #include "stm32f10x_lib.h"
//#include <stdio.h>
//#include <string.h>
extern u8 SCII[5];
extern u8 ret;
extern u8 k,dat;
u8 xi=0;
ErrorStatus HSEStartUpStatus;

void RCC_Configuration(void);
void NVIC_Configuration(void);
void EXTI_Configuration(void);
void GPIO_Configuration(void);
void USART_Configuration(void);
void Sys_Standby(void);
void SYSCLKConfig_STOP(void);
void delay(u8 time);
int main (void)
{
u8 i;

#ifdef DEBUG
  debug();
#endif
  RCC_Configuration();
  RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR,ENABLE);  // RCC_APB1Periph_BKP
  NVIC_Configuration();
  EXTI_Configuration();
  USART_Configuration();
  GPIO_Configuration();
  while(1)
  {
// delay(50);
if(GPIO_ReadInputDataBit(GPIOA, GPIO_Pin_7)==0)
   {
      /* Turn off led connected to PC.06 */
      k=1;
   GPIO_SetBits(GPIOD, GPIO_Pin_10);
      /* Request to enter STOP mode with regulator ON */
   PWR_WakeUpPinCmd(ENABLE);
   /*ENABLE all GPIO_EXTI*/
   PWR_EnterSTANDBYMode();    // PWR_Regulator_LowPower
//       PWR_EnterSTOPMode(PWR_Regulator_ON, PWR_STOPEntry_WFE); //停止中断后程序重这运行下去
      /* At this stage the system has resumed from STOP mode -------------------*/
   //GPIO_SetBits(GPIOD, GPIO_Pin_11);
      /* Turn on led connected to PC.06 */
//       GPIO_SetBits(GPIOD, GPIO_Pin_9);
      /* Configures system clock after wake-up from STOP: enable HSE, PLL and select PLL
         as system clock source (HSE and PLL are disabled in STOP mode) */
      SYSCLKConfig_STOP();    //需要重新配置时钟
      /* Turn off led connected to PC.09 */
   GPIO_ResetBits(GPIOD, GPIO_Pin_10);
   }
delay(50);
if(xi==1)
{
   for(i=1;i<6;i++)
   {
   USART_SendData(USART1, SCII);
   while (!(USART1->SR & USART_FLAG_TXE));
   USART_ClearITPendingBit(USART1,USART_IT_TXE);
//    delay(50);
   }
   xi=0;
   }
}
}

void RCC_Configuration(void)
{
  ErrorStatus HSEStartUpStatus;
  /**************************/
  RCC_DeInit();
  /* Enable HSE */
  RCC_HSEConfig(RCC_HSE_ON);

  /* Wait till HSE is ready */
  HSEStartUpStatus = RCC_WaitForHSEStartUp();

  if(HSEStartUpStatus == SUCCESS)
  {
/* HCLK = SYSCLK */
RCC_HCLKConfig(RCC_SYSCLK_Div1);

/* PCLK2 = HCLK */
RCC_PCLK2Config(RCC_HCLK_Div1);

/* PCLK1 = HCLK/2 */
RCC_PCLK1Config(RCC_HCLK_Div2);

/* Flash 2 wait state */
FLASH_SetLatency(FLASH_Latency_2);
/* Enable Prefetch Buffer */
FLASH_PrefetchBufferCmd(FLASH_PrefetchBuffer_Enable);

/* PLLCLK = 8MHz * 9 = 72 MHz */
RCC_PLLConfig(RCC_PLLSource_HSE_Div1, RCC_PLLMul_9);

/* Enable PLL */
RCC_PLLCmd(ENABLE);

/* Wait till PLL is ready */
while(RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET)
{
}
  /* Select PLL as system clock source */
RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK);
/* Wait till PLL is used as system clock
source */
while(RCC_GetSYSCLKSource() != 0x08)
{
}
  }
  /* Enable USART1 and GPIOA clock */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1 | RCC_APB2Periph_GPIOA|
                  RCC_APB2Periph_GPIOB|RCC_APB2Periph_GPIOD| RCC_APB2Periph_AFIO,ENABLE);
}

void NVIC_Configuration(void)
{
  NVIC_InitTypeDef NVIC_InitStructure;
#ifdef  VECT_TAB_RAM
  /* Set the Vector Table base location at 0x20000000 */
NVIC_SetVectorTable(NVIC_VectTab_RAM, 0x0);
  //指定向量表位置在RAM存储器
  //向量表位于RAM 参阅Section：NVIC_VectTab查阅更多该参数允许取值范围
#else  /* VECT_TAB_FLASH  */
  /* Set the Vector Table base location at 0x08000000 */
NVIC_SetVectorTable(NVIC_VectTab_FLASH, 0x0);
//指定向量表位置在flash程序存储器
#endif
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_0);
NVIC_InitStructure.NVIC_IRQChannel = EXTI9_5_IRQChannel;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);

NVIC_InitStructure.NVIC_IRQChannel = EXTI15_10_IRQChannel;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 2;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);

NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQChannel; //UART4全局中断通道
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority =0;//
NVIC_InitStructure.NVIC_IRQChannelSubPriority =4; //
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);

}

void EXTI_Configuration(void)
{
  EXTI_InitTypeDef EXTI_InitStructure;

  /* Connect EXTI Line9 to PB.09 */
  GPIO_EXTILineConfig(GPIO_PortSourceGPIOA, GPIO_PinSource10);
  GPIO_EXTILineConfig(GPIO_PortSourceGPIOB, GPIO_PinSource9);

  EXTI_InitStructure.EXTI_Line = EXTI_Line9;
  EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;  //外中断 EXTI_Mode_Event 事件中断
  EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;
  EXTI_InitStructure.EXTI_LineCmd = ENABLE;
  EXTI_Init(&EXTI_InitStructure);
  EXTI_GenerateSWInterrupt(EXTI_Line9);

  EXTI_InitStructure.EXTI_Line = EXTI_Line10;
  EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;  //外中断 EXTI_Mode_Event 事件中断
  EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;
  EXTI_InitStructure.EXTI_LineCmd = ENABLE;
  EXTI_Init(&EXTI_InitStructure);
  EXTI_GenerateSWInterrupt(EXTI_Line10);
}

/*void Sys_Standby(void)
{
  SCB->SCR|=1<<2;// SLEEPDEEP (SYS->CTRL)
  RCC->APB1ENR|=1<<28; //
  PWR->CSR|=1<<8; // WKUP
  PWR->CR|=1<<2; // Wake-up
  PWR->CR|=1<<1; //PDDS
  __WFE(); // WFI
} */

void USART_Configuration(void)
{
USART_InitTypeDef USART_InitStructure;
/************************************************/
USART_InitStructure.USART_BaudRate = 9600;
//该成员设置了USART传输的波特率
//波特率可以由以下公式计算
//IntegerDivider = ((APBClock) / (16 * (USART_InitStruct->USART_BaudRate)))
//FractionalDivider = ((IntegerDivider - ((u32) IntegerDivider)) * 16) + 0.5
USART_InitStructure.USART_WordLength = USART_WordLength_8b;
//设置传输数据位数提示了在一个帧中传输或者接收到的数据位数
USART_InitStructure.USART_StopBits = USART_StopBits_1;
//发送的停止位数目
USART_InitStructure.USART_Parity = USART_Parity_No ;
//定义了奇偶校验
USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
//指定了硬件流控制模式使能还是失能
USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
//指定了使能或者失能发送和接收模式
/* Configure USART1 basic and asynchronous paramters */
USART_Init(USART1, &USART_InitStructure);
/* Enable USART1 */
USART_ITConfig(USART1,USART_IT_RXNE, ENABLE);
USART_Cmd(USART1, ENABLE); //使能或者失能USART外设
}

void SYSCLKConfig_STOP(void)
{
  /* Enable HSE */
  RCC_HSEConfig(RCC_HSE_ON);
  /* Wait till HSE is ready */
  HSEStartUpStatus = RCC_WaitForHSEStartUp();

  if(HSEStartUpStatus == SUCCESS)
  {
/* Enable PLL */
RCC_PLLCmd(ENABLE);
/* Wait till PLL is ready */
while(RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET)
{
}
/* Select PLL as system clock source */
RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK);
/* Wait till PLL is used as system clock source */
while(RCC_GetSYSCLKSource() != 0x08)
{
}
  }
}

void GPIO_Configuration(void)
{
  GPIO_InitTypeDef GPIO_InitStructure;
  /* Configure USART1 Tx (PA.09) as alternate function push-pull */
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_Init(GPIOA, &GPIO_InitStructure);

  /*Configure USART1 Rx (PA.10) as input floating; */
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
  GPIO_Init(GPIOA, &GPIO_InitStructure);

  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_7;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
  GPIO_Init(GPIOA, &GPIO_InitStructure);

  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9; //EXTI
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
  GPIO_Init(GPIOB, &GPIO_InitStructure);

  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8 | GPIO_Pin_9 | GPIO_Pin_10 | GPIO_Pin_11;  //LED
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
  GPIO_Init(GPIOD, &GPIO_InitStructure);
}

void delay(u8 time)
{
u16 a,b;
for(a=time;a>0;a--)
  for(b=200;b>0;b--);
}

#ifdef  DEBUG
void assert_failed(u8* file, u32 line)
{
  //如果传给宏assert_param的参数为false，
  //则调用函数assert_failed并返回被错误调用的函数所在的文件名
  //和行数。如果传给宏assert_param的参数为true，则无返回值
  /* Infinite loop */
while (1)
  {
  }
}
#endif 此帖出自小平头技术问答

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2条回答

astwyg
2019-03-24 08:09

希望楼主把弄好以后的程序发上来一份大家学习参考

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