STM32L151进入低功耗，并由RTC唤醒的故事

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zhao.zhao 发布时间：2017-4-20 23:34

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最近试了一次如题的实验，电路相对比较简单，只接了2个LED指示灯，就不列出了，有点基础的朋友看程序就可以知道了。单片机供电电压为3V，开机正常工作时电流为8mA，由定时器T7控制一个LED快闪，以示正常工作。定时器TIM6定时30秒后，程序进入STOP+RTC模式下，这时电流实测在7uA。RTC时钟为内部LSI, 37KHz，设为1分钟产生唤醒中断，所以在停机30秒后，程序醒来，LED又可以快闪了。以后就一直循环此过程。

赞 1 收藏 7 评论29 发布时间：2017-4-20 23:34

29个回答

zhao.zhao 回答时间：2017-4-22 11:56:44

自己贴程序
/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "stm32l1xx_hal.h"
#include "iwdg.h"
#include "rtc.h"
#include "tim.h"
#include "gpio.h"
#include "led.h"

/* USER CODE BEGIN Includes */

/* USER CODE END Includes */

/* Private variables ---------------------------------------------------------*/

/* USER CODE BEGIN PV */
/* Private variables ---------------------------------------------------------*/

/* USER CODE END PV */

/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
void Error_Handler(void);
static void MX_NVIC_Init(void);

/* USER CODE BEGIN PFP */
/* Private function prototypes -----------------------------------------------*/

/* USER CODE END PFP */

/* USER CODE BEGIN 0 */
FunctionalState    EnterStopMode_Enable = DISABLE;
BOOL             Just_Wukeup = FALSE;
/* USER CODE END 0 */

int main(void)
{

  /* USER CODE BEGIN 1 */

  /* USER CODE END 1 */

  /* MCU Configuration----------------------------------------------------------*/

  /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
  HAL_Init();

  /* Configure the system clock */
  SystemClock_Config();
  HAL_Delay(1000);
  /* Initialize all configured peripherals */

  MX_RTC_Init();
  MX_TIM6_Init();
  MX_TIM7_Init();
//  MX_IWDG_Init();

  MX_GPIO_Init();
  /* Initialize interrupts */
  MX_NVIC_Init();

  /* USER CODE BEGIN 2 */

dataLED_GPIO_Init();
statusLED_GPIO_Init();

  /* USER CODE END 2 */

  /* Infinite loop */
  /* USER CODE BEGIN WHILE */
while (1)
{
/* USER CODE END WHILE */
/* USER CODE BEGIN 3 */
//       MX_IWDG_Reload();
      if(EnterStopMode_Enable == ENABLE) // T6µÄ30ÃëÊ±¼äµ½ÁË, ÔÊÐí½øÈëµÍ¹¦ºÄÍ£»úÄ£Ê½
      {
         EnterStopMode_Enable = DISABLE; // ÏÈ°Ñ½øÈë µÍ¹¦ºÄÍ£»úÄ£Ê½Ê¹ÄÜ¹ØÁË£¬ÒÔÃâÐÑÀ´ºóÓÖÂíÉÏ½øÈëÍ£»úÄ£Ê½
         MX_GPIO_Init();                // °ÑËùÓÐÒý½Å¹Ø±Õ
         HAL_PWREx_EnableUltraLowPower();
         HAL_PWREx_EnableFastWakeUp();
         HAL_PWR_EnterSTOPMode(PWR_LOWPOWERREGULATOR_ON,PWR_STOPENTRY_WFI); // ½øÈëµÍ¹¦ºÄÍ£»úÄ£Ê½
      }

      if( Just_Wukeup == TRUE )
      {
         Just_Wukeup = FALSE;
         SystemClock_Config();          // ÖØÐÂÅäÖÃÏµÍ³Ê±ÖÓ

         dataLED_GPIO_Init();
         statusLED_GPIO_Init();
         LED_STATUS_ON();
      }
}
  /* USER CODE END 3 */

}

/** System Clock Configuration
*/
void SystemClock_Config(void)
{

  RCC_OscInitTypeDef RCC_OscInitStruct;
  RCC_ClkInitTypeDef RCC_ClkInitStruct;
  RCC_PeriphCLKInitTypeDef PeriphClkInit;

/**Configure the main internal regulator output voltage
*/
  __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);

/**Initializes the CPU, AHB and APB busses clocks
*/
  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI|RCC_OSCILLATORTYPE_LSI;
  RCC_OscInitStruct.HSIState = RCC_HSI_ON;
  RCC_OscInitStruct.HSICalibrationValue = 16;
  RCC_OscInitStruct.LSIState = RCC_LSI_ON;
  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
  if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
  {
Error_Handler();
  }

/**Initializes the CPU, AHB and APB busses clocks
*/
  RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
                           |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_HSI;
  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
  RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;

  if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_0) != HAL_OK)
  {
Error_Handler();
  }

  PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_RTC;
  PeriphClkInit.RTCClockSelection = RCC_RTCCLKSOURCE_LSI;
  if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)
  {
Error_Handler();
  }

/**Configure the Systick interrupt time
*/
  HAL_SYSTICK_Config(HAL_RCC_GetHCLKFreq()/1000);

/**Configure the Systick
*/
  HAL_SYSTICK_CLKSourceConfig(SYSTICK_CLKSOURCE_HCLK);

  /* SysTick_IRQn interrupt configuration */
  HAL_NVIC_SetPriority(SysTick_IRQn, 0, 0);
}

/** NVIC Configuration
*/
static void MX_NVIC_Init(void)
{
  /* RTC_WKUP_IRQn interrupt configuration */
  HAL_NVIC_SetPriority(RTC_WKUP_IRQn, 1, 0);
  HAL_NVIC_EnableIRQ(RTC_WKUP_IRQn);
  /* TIM6_IRQn interrupt configuration */
  HAL_NVIC_SetPriority(TIM6_IRQn, 2, 0);
  HAL_NVIC_EnableIRQ(TIM6_IRQn);
  /* TIM7_IRQn interrupt configuration */
  HAL_NVIC_SetPriority(TIM7_IRQn, 2, 0);
  HAL_NVIC_EnableIRQ(TIM7_IRQn);
}

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zhao.zhao 回答时间：2017-4-22 12:01:40

static void MX_NVIC_Init(void)
{
  /* RTC_WKUP_IRQn interrupt configuration */
  HAL_NVIC_SetPriority(RTC_WKUP_IRQn, 1, 0);
  HAL_NVIC_EnableIRQ(RTC_WKUP_IRQn);
  /* TIM6_IRQn interrupt configuration */
  HAL_NVIC_SetPriority(TIM6_IRQn, 2, 0);
  HAL_NVIC_EnableIRQ(TIM6_IRQn);
  /* TIM7_IRQn interrupt configuration */
  HAL_NVIC_SetPriority(TIM7_IRQn, 2, 0);
  HAL_NVIC_EnableIRQ(TIM7_IRQn);
}
void MX_GPIO_Init(void)
{

  GPIO_InitTypeDef GPIO_InitStruct;

  /* GPIO Ports Clock Enable */
  __HAL_RCC_GPIOC_CLK_ENABLE();
  __HAL_RCC_GPIOH_CLK_ENABLE();
  __HAL_RCC_GPIOA_CLK_ENABLE();
  __HAL_RCC_GPIOB_CLK_ENABLE();
  __HAL_RCC_GPIOD_CLK_ENABLE();

  /*Configure GPIO pins : PC13 PC14 PC15 PC0
                        PC1 PC2 PC3 PC4
                        PC5 PC6 PC7 PC8
                        PC9 PC10 PC11 PC12 */
  GPIO_InitStruct.Pin = GPIO_PIN_13|GPIO_PIN_14|GPIO_PIN_15|GPIO_PIN_0
                        |GPIO_PIN_1|GPIO_PIN_2|GPIO_PIN_3|GPIO_PIN_4
                        |GPIO_PIN_5|GPIO_PIN_6|GPIO_PIN_7|GPIO_PIN_8
                        |GPIO_PIN_9|GPIO_PIN_10|GPIO_PIN_11|GPIO_PIN_12;
  GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
  GPIO_InitStruct.Pull = GPIO_NOPULL;
  HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);

  /*Configure GPIO pins : PH0 PH1 */
  GPIO_InitStruct.Pin = GPIO_PIN_0|GPIO_PIN_1;
  GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
  GPIO_InitStruct.Pull = GPIO_NOPULL;
  HAL_GPIO_Init(GPIOH, &GPIO_InitStruct);

  /*Configure GPIO pins : PA0 PA1 PA2 PA3
                        PA4 PA5 PA6 PA7
                        PA8 PA9 PA10 PA11
                        PA12 PA15 */
  GPIO_InitStruct.Pin = GPIO_PIN_0|GPIO_PIN_1|GPIO_PIN_2|GPIO_PIN_3
                        |GPIO_PIN_4|GPIO_PIN_5|GPIO_PIN_6|GPIO_PIN_7
                        |GPIO_PIN_8|GPIO_PIN_9|GPIO_PIN_10|GPIO_PIN_11
                        |GPIO_PIN_12|GPIO_PIN_15;
  GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
  GPIO_InitStruct.Pull = GPIO_NOPULL;
  HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);

  /*Configure GPIO pins : PB0 PB1 PB2 PB10
                        PB11 PB12 PB13 PB14
                        PB15 PB3 PB4 PB5
                        PB6 PB7 PB8 PB9 */
  GPIO_InitStruct.Pin = GPIO_PIN_0|GPIO_PIN_1|GPIO_PIN_2|GPIO_PIN_10
                        |GPIO_PIN_11|GPIO_PIN_12|GPIO_PIN_13|GPIO_PIN_14
                        |GPIO_PIN_15|GPIO_PIN_3|GPIO_PIN_4|GPIO_PIN_5
                        |GPIO_PIN_6|GPIO_PIN_7|GPIO_PIN_8|GPIO_PIN_9;
  GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
  GPIO_InitStruct.Pull = GPIO_NOPULL;
  HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);

  /*Configure GPIO pin : PD2 */
  GPIO_InitStruct.Pin = GPIO_PIN_2;
  GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
  GPIO_InitStruct.Pull = GPIO_NOPULL;
  HAL_GPIO_Init(GPIOD, &GPIO_InitStruct);

}

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zhao.zhao 回答时间：2017-4-22 11:59:21

/* RTC init function */
void MX_RTC_Init(void)
{
//  RTC_TimeTypeDef sTime;
//  RTC_DateTypeDef sDate;

/**Initialize RTC Only
*/
  hrtc.Instance = RTC;
  hrtc.Init.HourFormat = RTC_HOURFORMAT_24;
  hrtc.Init.AsynchPrediv = 99; //127;    37000/(99+1)=370
  hrtc.Init.SynchPrediv =  369; //255;
  hrtc.Init.OutPut = RTC_OUTPUT_DISABLE;
  hrtc.Init.OutPutPolarity = RTC_OUTPUT_POLARITY_HIGH;
  hrtc.Init.OutPutType = RTC_OUTPUT_TYPE_OPENDRAIN;
  if (HAL_RTC_Init(&hrtc) != HAL_OK)
  {
Error_Handler();
  }

/**Initialize RTC and set the Time and Date
*/
//  if(HAL_RTCEx_BKUPRead(&hrtc, RTC_BKP_DR0) != 0x32F2){
//  sTime.Hours = 0x0;
//  sTime.Minutes = 0x0;
//  sTime.Seconds = 0x0;
//  sTime.DayLightSaving = RTC_DAYLIGHTSAVING_NONE;
//  sTime.StoreOperation = RTC_STOREOPERATION_RESET;
//  if (HAL_RTC_SetTime(&hrtc, &sTime, RTC_FORMAT_BCD) != HAL_OK)
//  {
// Error_Handler();
//  }

//  sDate.WeekDay = RTC_WEEKDAY_MONDAY;
//  sDate.Month = RTC_MONTH_JANUARY;
//  sDate.Date = 0x1;
//  sDate.Year = 0x0;

//  if (HAL_RTC_SetDate(&hrtc, &sDate, RTC_FORMAT_BCD) != HAL_OK)
//  {
// Error_Handler();
//  }

// HAL_RTCEx_BKUPWrite(&hrtc,RTC_BKP_DR0,0x32F2);
//  }
/**Enable the WakeUp
*/
  if (HAL_RTCEx_SetWakeUpTimer_IT(&hrtc, 59, RTC_WAKEUPCLOCK_CK_SPRE_16BITS) != HAL_OK)
  {
Error_Handler();
  }

}

void MX_TIM6_Init(void)
{
  TIM_MasterConfigTypeDef sMasterConfig;

  htim6.Instance = TIM6;
  htim6.Init.Prescaler = 15999;
  htim6.Init.CounterMode = TIM_COUNTERMODE_UP;
  htim6.Init.Period = 999;
  if (HAL_TIM_Base_Init(&htim6) != HAL_OK)
  {
Error_Handler();
  }

  sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET;
  sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
  if (HAL_TIMEx_MasterConfigSynchronization(&htim6, &sMasterConfig) != HAL_OK)
  {
Error_Handler();
  }

}

/* TIM7 init function */
void MX_TIM7_Init(void)
{
  TIM_MasterConfigTypeDef sMasterConfig;

  htim7.Instance = TIM7;
  htim7.Init.Prescaler = 15999;
  htim7.Init.CounterMode = TIM_COUNTERMODE_UP;
  htim7.Init.Period = 49;
  if (HAL_TIM_Base_Init(&htim7) != HAL_OK)
  {
Error_Handler();
  }

  sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET;
  sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
  if (HAL_TIMEx_MasterConfigSynchronization(&htim7, &sMasterConfig) != HAL_OK)
  {
Error_Handler();
  }

}

void HAL_TIM_Base_MspInit(TIM_HandleTypeDef* tim_baseHandle)
{

  if(tim_baseHandle->Instance==TIM6)
  {
  /* USER CODE BEGIN TIM6_MspInit 0 */

  /* USER CODE END TIM6_MspInit 0 */
/* Peripheral clock enable */
__HAL_RCC_TIM6_CLK_ENABLE();
  /* USER CODE BEGIN TIM6_MspInit 1 */

   // ´ò¿ª¸üÐÂÖÐ¶Ï
if (HAL_TIM_Base_Start_IT(tim_baseHandle) != HAL_OK)
{
      Error_Handler();
}
  /* USER CODE END TIM6_MspInit 1 */
  }
  else if(tim_baseHandle->Instance==TIM7)
  {
  /* USER CODE BEGIN TIM7_MspInit 0 */

  /* USER CODE END TIM7_MspInit 0 */
/* Peripheral clock enable */
__HAL_RCC_TIM7_CLK_ENABLE();
  /* USER CODE BEGIN TIM7_MspInit 1 */

   // ´ò¿ª¸üÐÂÖÐ¶Ï
if (HAL_TIM_Base_Start_IT(tim_baseHandle) != HAL_OK)
{
      Error_Handler();
}
  /* USER CODE END TIM7_MspInit 1 */
  }
}

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zhao.zhao 回答时间：2017-4-22 11:54:42

我的附件咋没了

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zhao.zhao 回答时间：2017-4-22 12:00:07

/* USER CODE BEGIN 1 */
extern  FunctionalState  EnterStopMode_Enable;
static  uint16_t T6_Counter=0;
void  HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim)
{
if(htim->Instance == TIM6)
{
      T6_Counter++;
      if(T6_Counter >= 30) // 30Ãëºó½øÈëÍ£»úÄ£Ê½
      {
         EnterStopMode_Enable = ENABLE;
         T6_Counter          = 0;
      }
}
if(htim->Instance == TIM7)
{
      LED_DATA_TOGGLE();
}
}
/* USER CODE END 1 */

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zhao.zhao 回答时间：2017-4-22 12:03:37

void  statusLED_GPIO_Init(void)
{
GPIO_InitTypeDef  GPIO_InitStruct;
// 2¸öLEDµÈµÄÒý½Å³õÊ¼»¯
LEDx_GPIO_CLK_ENABLE();
GPIO_InitStruct.Pin = LED_STATUS_PIN;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Pull = GPIO_PULLUP;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_MEDIUM;
HAL_GPIO_Init(LED_STATUS_GPIO_PORT, &GPIO_InitStruct);
LED_STATUS_OFF();
}

void  dataLED_GPIO_Init(void)
{
GPIO_InitTypeDef  GPIO_InitStruct;
// 2¸öLEDµÈµÄÒý½Å³õÊ¼»¯
LEDx_GPIO_CLK_ENABLE();
GPIO_InitStruct.Pin = LED_DATA_PIN;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Pull = GPIO_PULLUP;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_MEDIUM;
HAL_GPIO_Init(LED_STATUS_GPIO_PORT, &GPIO_InitStruct);
LED_DATA_OFF();
}

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zhao.zhao 回答时间：2017-4-22 12:05:15

void RTC_WKUP_IRQHandler(void)
{
  /* USER CODE BEGIN RTC_WKUP_IRQn 0 */

  /* USER CODE END RTC_WKUP_IRQn 0 */
  HAL_RTCEx_WakeUpTimerIRQHandler(&hrtc);
  /* USER CODE BEGIN RTC_WKUP_IRQn 1 */

  /* USER CODE END RTC_WKUP_IRQn 1 */
}

/**
* @brief This function handles TIM6 global interrupt.
*/
void TIM6_IRQHandler(void)
{
  /* USER CODE BEGIN TIM6_IRQn 0 */

  /* USER CODE END TIM6_IRQn 0 */
  HAL_TIM_IRQHandler(&htim6);
  /* USER CODE BEGIN TIM6_IRQn 1 */

  /* USER CODE END TIM6_IRQn 1 */
}

/**
* @brief This function handles TIM7 global interrupt.
*/
void TIM7_IRQHandler(void)
{
  /* USER CODE BEGIN TIM7_IRQn 0 */

  /* USER CODE END TIM7_IRQn 0 */
  HAL_TIM_IRQHandler(&htim7);
  /* USER CODE BEGIN TIM7_IRQn 1 */

  /* USER CODE END TIM7_IRQn 1 */
}

extern  BOOL  Just_Wukeup;
void HAL_RTCEx_WakeUpTimerEventCallback(RTC_HandleTypeDef *hrtc)
{
Just_Wukeup = TRUE;
}

extern  FunctionalState  EnterStopMode_Enable;
static  uint16_t T6_Counter=0;
void  HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim)
{
if(htim->Instance == TIM6)
{
      T6_Counter++;
      if(T6_Counter >= 30) // 30Ãëºó½øÈëÍ£»úÄ£Ê½
      {
         EnterStopMode_Enable = ENABLE;
         T6_Counter          = 0;
      }
}
if(htim->Instance == TIM7)
{
      LED_DATA_TOGGLE();
}
}