how count of pulse on gpio in stm32l4 at lprun and wake up?

[alianvari]

I use 2 board for generate pulse and count pulse.

I generate pulses with 4Hz frequency by first board and print number of each pulse also when I press button pulse production stops and then after 20ms products a another pulse(I things micro in second board is waking up ).

when pressed button in first board, micro in second board wake up and print number of received pulses and enter low power run mode again also second board wake up every 2s and print "hello".

when I pressed button micro wakeup but the number of pulses it displays is much higher than the actual value!!

What happens in the wake up period for the gpio interrupt?

how count of pulse on gpio in stm32l4 at lprun and wake up? 

Note:I use lptim in second board.

please help me.

 MX_GPIO_Init();

 MX_USART1_UART_Init();

 MX_SPI1_Init();

 MX_LPTIM1_Init();

HAL_Delay(5000);

HAL_PWR_EnableWakeUpPin(PWR_WAKEUP_PIN4);

HAL_LPTIM_Counter_Start_IT(&hlptim1, 1000);

 /*enter low power run mode*/

 HAL_GPIO_WritePin(Temp_PWR_GPIO_Port,Temp_PWR_Pin,GPIO_PIN_SET);//power off Temp PWR

 HAL_SPI_MspDeInit(&hspi1);

 HAL_GPIO_DeInit(TempAD_CS_GPIO_Port, TempAD_CS_Pin);

 SystemClock_Decrease();   

 HAL_SuspendTick();

 HAL_PWREx_EnableLowPowerRunMode();

 /*exit from low power run mode*/

  HAL_PWREx_DisableLowPowerRunMode();

   SystemClock_Config();

   HAL_Init();

   SystemPower_Config();

   HAL_ResumeTick();

   MX_GPIO_Init();

   huart1.gState = HAL_UART_STATE_RESET;

   MX_USART1_UART_Init();

void SystemClock_Config(void)

{

 RCC_OscInitTypeDef RCC_OscInitStruct = {0};

 RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};

 RCC_PeriphCLKInitTypeDef PeriphClkInit = {0};

 /** Initializes the CPU, AHB and APB busses clocks 

 */

 RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSI|RCC_OSCILLATORTYPE_MSI;

 RCC_OscInitStruct.LSIState = RCC_LSI_ON;

 RCC_OscInitStruct.MSIState = RCC_MSI_ON;

 RCC_OscInitStruct.MSICalibrationValue = 0;

 RCC_OscInitStruct.MSIClockRange = RCC_MSIRANGE_5;

 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_MSI;

 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_USART1|RCC_PERIPHCLK_LPTIM1;

 PeriphClkInit.Usart1ClockSelection = RCC_USART1CLKSOURCE_PCLK2;

 PeriphClkInit.Lptim1ClockSelection = RCC_LPTIM1CLKSOURCE_LSI;

 if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)

 {

  Error_Handler();

 }

 /** Configure the main internal regulator output voltage 

 */

 if (HAL_PWREx_ControlVoltageScaling(PWR_REGULATOR_VOLTAGE_SCALE1) != HAL_OK)

 {

  Error_Handler();

 }

}

static void SystemPower_Config(void)

{

 GPIO_InitTypeDef GPIO_InitStructure;

   /* Set all GPIO in analog state to reduce power consumption */

  __HAL_RCC_GPIOA_CLK_ENABLE();

  __HAL_RCC_GPIOB_CLK_ENABLE();

  __HAL_RCC_GPIOC_CLK_ENABLE();

  __HAL_RCC_GPIOD_CLK_ENABLE();

  __HAL_RCC_GPIOE_CLK_ENABLE();

  __HAL_RCC_GPIOF_CLK_ENABLE();

  __HAL_RCC_GPIOG_CLK_ENABLE();

  __HAL_RCC_GPIOH_CLK_ENABLE();

  __HAL_RCC_GPIOI_CLK_ENABLE();

  GPIO_InitStructure.Mode = GPIO_MODE_ANALOG;

  GPIO_InitStructure.Speed = GPIO_SPEED_FREQ_VERY_HIGH;

  GPIO_InitStructure.Pull = GPIO_NOPULL;

  GPIO_InitStructure.Pin = GPIO_PIN_All;

  HAL_GPIO_Init(GPIOA, &GPIO_InitStructure);

  HAL_GPIO_Init(GPIOB, &GPIO_InitStructure);

  HAL_GPIO_Init(GPIOC, &GPIO_InitStructure);

  HAL_GPIO_Init(GPIOD, &GPIO_InitStructure);

  HAL_GPIO_Init(GPIOE, &GPIO_InitStructure);

  HAL_GPIO_Init(GPIOF, &GPIO_InitStructure);

  HAL_GPIO_Init(GPIOG, &GPIO_InitStructure);

  HAL_GPIO_Init(GPIOH, &GPIO_InitStructure);

  HAL_GPIO_Init(GPIOI, &GPIO_InitStructure);  

  __HAL_RCC_GPIOA_CLK_DISABLE();

  __HAL_RCC_GPIOB_CLK_DISABLE();

  __HAL_RCC_GPIOC_CLK_DISABLE();

  __HAL_RCC_GPIOD_CLK_DISABLE();

  __HAL_RCC_GPIOE_CLK_DISABLE();

  __HAL_RCC_GPIOF_CLK_DISABLE();

  __HAL_RCC_GPIOG_CLK_DISABLE();

  __HAL_RCC_GPIOH_CLK_DISABLE();

  __HAL_RCC_GPIOI_CLK_DISABLE();

}

void SystemClock_Decrease(void)

{

 RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};

 RCC_OscInitTypeDef RCC_OscInitStruct = {0};

 /* MSI is enabled after System reset, activate PLL with MSI as source */

 RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_MSI;

 RCC_OscInitStruct.HSEState = RCC_HSE_OFF;

 RCC_OscInitStruct.HSIState = RCC_HSI_ON;

 RCC_OscInitStruct.MSIState = RCC_MSI_ON;

 RCC_OscInitStruct.MSIClockRange = RCC_MSIRANGE_0;

 RCC_OscInitStruct.MSICalibrationValue = RCC_MSICALIBRATION_DEFAULT;

 RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;

 if(HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)

 {

  /* Initialization Error */

  Error_Handler();

 }

 /* Select MSI as system clock source and configure the HCLK, PCLK1 and PCLK2 

   clocks dividers */

 RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_SYSCLK;

 RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_MSI; 

 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)

 {

  /* Initialization Error */

  Error_Handler();

 }

 /* Disable HSI to reduce power consumption since MSI is used from that point */

 __HAL_RCC_HSI_DISABLE();

} 

void HAL_LPTIM_AutoReloadMatchCallback (LPTIM_HandleTypeDef *hlptim1)

{

if(hlptim1->Instance==LPTIM1)

{

AA_TimeTest++;

}

}