STM32U575 freezes when exiting STOP2 mode after power cycle

[yyc]

The MCU works fine the first time it gets programmed. However, after one power cycle, it freezes completely after an external  interrupt happens. Doesn’t even enter the error handler. I have SMPS enabled. Thanks for your help

 

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();

  /* USER CODE BEGIN Init */

  /* USER CODE END Init */

  /* Configure the System Power */
  SystemPower_Config();

  /* Configure the system clock */
  SystemClock_Config();

  /* USER CODE BEGIN SysInit */

  /* USER CODE END SysInit */

  /* Initialize all configured peripherals */
  MX_GPIO_Init();
  MX_RTC_Init();
  MX_UART4_Init();
  /* USER CODE BEGIN 2 */
  GreenLEDOn();
  HAL_Delay(5000);
  GreenLEDOff();
  /* USER CODE END 2 */

  /* Infinite loop */
  /* USER CODE BEGIN WHILE */
  while (1)
  {
	  if(!HAL_GPIO_ReadPin(V_Fu_Trig_GPIO_Port, V_Fu_Trig_Pin))//Fuse voltage fault
		  	  {
		  	  fault = true;
		  	  Enter_Stop2_Mode();
		  	  NVIC_SystemReset();
		  	  }
		  else
			  flashRedLED();

	  HAL_Delay(2000);


    /* USER CODE END WHILE */

    /* USER CODE BEGIN 3 */
  }
  /* USER CODE END 3 */
}


static void Enter_Stop2_Mode(void)
{

	HAL_SuspendTick();
	HAL_PWREx_EnterSTOP2Mode(PWR_SLEEPENTRY_WFI);
}

 

[Gyessine]

Hello ​@yyc 
Are you using a custom PCB or a reference board.

Stop 2 mode was tested with this firmware example on an STM32 Nucleo- U575 board, and the issue could not be reproduced.

For now, use the firmware example.

If a reference board is used and the example works, the issue is likely related to the software implementation. The example can then be used as a reference.

If a custom printed circuit board (PCB) is used and the project still does not work with the firmware example, the issue might be related to hardware.
BR
Gyessine

 

[yyc]

I am using a custom PCB, but the it works with the example.

It seems like the problem is related to my code. But I cannot tell if I’ve done anything wrong. I am using the default setup. I am attaching my whole file here. Thanks for your help.

/* USER CODE BEGIN Header */
/**
  ******************************************************************************
  * @file           : main.c
  * @brief          : Main program body
  ******************************************************************************
  * @attention
  *
  * Copyright (c) 2026 STMicroelectronics.
  * All rights reserved.
  *
  * This software is licensed under terms that can be found in the LICENSE file
  * in the root directory of this software component.
  * If no LICENSE file comes with this software, it is provided AS-IS.
  *
  ******************************************************************************
  */
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "main.h"

/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include <stdint.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <stdbool.h>
/* USER CODE END Includes */

/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */

/* USER CODE END PTD */

/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */
#define GreenLEDOn()  (HAL_GPIO_WritePin(LED_G_GPIO_Port, LED_G_Pin, SET))
#define GreenLEDOff()  (HAL_GPIO_WritePin(LED_G_GPIO_Port, LED_G_Pin, RESET))
#define RedLEDOn()  (HAL_GPIO_WritePin(LED_R_GPIO_Port, LED_R_Pin, SET))
#define RedLEDOff()  (HAL_GPIO_WritePin(LED_R_GPIO_Port, LED_R_Pin, RESET))
/* USER CODE END PD */

/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */

/* USER CODE END PM */

/* Private variables ---------------------------------------------------------*/
ADC_HandleTypeDef hadc4;

COMP_HandleTypeDef hcomp1;

OPAMP_HandleTypeDef hopamp1;

RTC_HandleTypeDef hrtc;

UART_HandleTypeDef huart4;
DMA_HandleTypeDef handle_GPDMA1_Channel0;

/* USER CODE BEGIN PV */
bool fault = false;
/* USER CODE END PV */

/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
static void SystemPower_Config(void);
static void MX_GPIO_Init(void);
static void MX_GPDMA1_Init(void);
static void MX_ADC4_Init(void);
static void MX_COMP1_Init(void);
static void MX_RTC_Init(void);
static void MX_UART4_Init(void);
static void MX_OPAMP1_Init(void);
static void MX_ICACHE_Init(void);
/* USER CODE BEGIN PFP */
void flashGreenLED();
void flashRedLED();
static void Enter_Stop2_Mode();
/* USER CODE END PFP */

/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */

/* USER CODE END 0 */

/**
  * @brief  The application entry point.
  * @retval int
  */
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();

  /* USER CODE BEGIN Init */

  /* USER CODE END Init */

  /* Configure the System Power */
  SystemPower_Config();

  /* Configure the system clock */
  SystemClock_Config();

  /* USER CODE BEGIN SysInit */

  /* USER CODE END SysInit */

  /* Initialize all configured peripherals */
  MX_GPIO_Init();
  MX_GPDMA1_Init();
  MX_ADC4_Init();
  MX_COMP1_Init();
  MX_RTC_Init();
  MX_UART4_Init();
  MX_OPAMP1_Init();
  MX_ICACHE_Init();
  /* USER CODE BEGIN 2 */
  GreenLEDOn();
  HAL_Delay(8000);
  GreenLEDOff();
  /* USER CODE END 2 */

  /* Infinite loop */
  /* USER CODE BEGIN WHILE */
  while (1)
  {
	  if(!HAL_GPIO_ReadPin(V_Fu_Trig_GPIO_Port, V_Fu_Trig_Pin))//Fuse voltage fault
		  	  {
		  	  fault = true;
		  	  Enter_Stop2_Mode();
		  	  NVIC_SystemReset();
		  	  }
		  else
			  flashRedLED();

	  HAL_Delay(2000);


    /* USER CODE END WHILE */

    /* USER CODE BEGIN 3 */
  }
  /* USER CODE END 3 */
}

/**
  * @brief System Clock Configuration
  * @retval None
  */
void SystemClock_Config(void)
{
  RCC_OscInitTypeDef RCC_OscInitStruct = {0};
  RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};

  /** Configure the main internal regulator output voltage
  */
  if (HAL_PWREx_ControlVoltageScaling(PWR_REGULATOR_VOLTAGE_SCALE3) != HAL_OK)
  {
    Error_Handler();
  }

  /** Configure LSE Drive Capability
  */
  HAL_PWR_EnableBkUpAccess();
  __HAL_RCC_LSEDRIVE_CONFIG(RCC_LSEDRIVE_LOW);

  /** Initializes the CPU, AHB and APB buses clocks
  */
  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSE|RCC_OSCILLATORTYPE_MSI
                              |RCC_OSCILLATORTYPE_MSIK;
  RCC_OscInitStruct.LSEState = RCC_LSE_ON;
  RCC_OscInitStruct.MSIState = RCC_MSI_ON;
  RCC_OscInitStruct.MSICalibrationValue = RCC_MSICALIBRATION_DEFAULT;
  RCC_OscInitStruct.MSIClockRange = RCC_MSIRANGE_4;
  RCC_OscInitStruct.MSIKClockRange = RCC_MSIKRANGE_15;
  RCC_OscInitStruct.MSIKState = RCC_MSIK_ON;
  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_MSI;
  RCC_OscInitStruct.PLL.PLLMBOOST = RCC_PLLMBOOST_DIV1;
  RCC_OscInitStruct.PLL.PLLM = 1;
  RCC_OscInitStruct.PLL.PLLN = 32;
  RCC_OscInitStruct.PLL.PLLP = 2;
  RCC_OscInitStruct.PLL.PLLQ = 2;
  RCC_OscInitStruct.PLL.PLLR = 64;
  RCC_OscInitStruct.PLL.PLLRGE = RCC_PLLVCIRANGE_0;
  RCC_OscInitStruct.PLL.PLLFRACN = 0;
  if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
  {
    Error_Handler();
  }

  /** Initializes the CPU, AHB and APB buses clocks
  */
  RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
                              |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2
                              |RCC_CLOCKTYPE_PCLK3;
  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
  RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
  RCC_ClkInitStruct.APB3CLKDivider = RCC_HCLK_DIV1;

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

/**
  * @brief Power Configuration
  * @retval None
  */
static void SystemPower_Config(void)
{

  /*
   * Disable the internal Pull-Up in Dead Battery pins of UCPD peripheral
   */
  HAL_PWREx_DisableUCPDDeadBattery();

  /*
   * SRAM Power Down In Stop Mode Config
   */
  HAL_PWREx_DisableRAMsContentStopRetention(PWR_SRAM1_PAGE1_STOP_RETENTION);
  HAL_PWREx_DisableRAMsContentStopRetention(PWR_SRAM1_PAGE2_STOP_RETENTION);
  HAL_PWREx_DisableRAMsContentStopRetention(PWR_SRAM1_PAGE3_STOP_RETENTION);
  HAL_PWREx_DisableRAMsContentStopRetention(PWR_SRAM2_PAGE1_STOP_RETENTION);
  HAL_PWREx_DisableRAMsContentStopRetention(PWR_SRAM2_PAGE2_STOP_RETENTION);
  HAL_PWREx_DisableRAMsContentStopRetention(PWR_SRAM3_PAGE1_STOP_RETENTION);
  HAL_PWREx_DisableRAMsContentStopRetention(PWR_SRAM3_PAGE2_STOP_RETENTION);
  HAL_PWREx_DisableRAMsContentStopRetention(PWR_SRAM3_PAGE3_STOP_RETENTION);
  HAL_PWREx_DisableRAMsContentStopRetention(PWR_SRAM3_PAGE4_STOP_RETENTION);
  HAL_PWREx_DisableRAMsContentStopRetention(PWR_SRAM3_PAGE5_STOP_RETENTION);
  HAL_PWREx_DisableRAMsContentStopRetention(PWR_SRAM3_PAGE6_STOP_RETENTION);
  HAL_PWREx_DisableRAMsContentStopRetention(PWR_SRAM3_PAGE7_STOP_RETENTION);
  HAL_PWREx_DisableRAMsContentStopRetention(PWR_SRAM3_PAGE8_STOP_RETENTION);
  HAL_PWREx_DisableRAMsContentStopRetention(PWR_DCACHE1_FULL_STOP_RETENTION);
  HAL_PWREx_DisableRAMsContentStopRetention(PWR_DMA2DRAM_FULL_STOP_RETENTION);
  HAL_PWREx_DisableRAMsContentStopRetention(PWR_PKA32RAM_FULL_STOP_RETENTION);
  HAL_PWREx_DisableRAMsContentStopRetention(PWR_PERIPHRAM_FULL_STOP_RETENTION);

  /*
   * Switch to SMPS regulator instead of LDO
   */
  if (HAL_PWREx_ConfigSupply(PWR_SMPS_SUPPLY) != HAL_OK)
  {
    Error_Handler();
  }
/* USER CODE BEGIN PWR */
/* USER CODE END PWR */
}

/**
  * @brief ADC4 Initialization Function
  * @param None
  * @retval None
  */
static void MX_ADC4_Init(void)
{

  /* USER CODE BEGIN ADC4_Init 0 */

  /* USER CODE END ADC4_Init 0 */

  ADC_ChannelConfTypeDef sConfig = {0};

  /* USER CODE BEGIN ADC4_Init 1 */

  /* USER CODE END ADC4_Init 1 */

  /** Common config
  */
  hadc4.Instance = ADC4;
  hadc4.Init.ClockPrescaler = ADC_CLOCK_ASYNC_DIV1;
  hadc4.Init.Resolution = ADC_RESOLUTION_12B;
  hadc4.Init.DataAlign = ADC_DATAALIGN_RIGHT;
  hadc4.Init.ScanConvMode = ADC_SCAN_DIRECTION_FORWARD;
  hadc4.Init.EOCSelection = ADC_EOC_SINGLE_CONV;
  hadc4.Init.LowPowerAutoPowerOff = ADC_LOW_POWER_NONE;
  hadc4.Init.LowPowerAutoWait = DISABLE;
  hadc4.Init.ContinuousConvMode = DISABLE;
  hadc4.Init.NbrOfConversion = 1;
  hadc4.Init.DiscontinuousConvMode = DISABLE;
  hadc4.Init.ExternalTrigConv = ADC_SOFTWARE_START;
  hadc4.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE;
  hadc4.Init.DMAContinuousRequests = DISABLE;
  hadc4.Init.TriggerFrequencyMode = ADC_TRIGGER_FREQ_LOW;
  hadc4.Init.Overrun = ADC_OVR_DATA_PRESERVED;
  hadc4.Init.SamplingTimeCommon1 = ADC4_SAMPLETIME_1CYCLE_5;
  hadc4.Init.SamplingTimeCommon2 = ADC4_SAMPLETIME_1CYCLE_5;
  hadc4.Init.OversamplingMode = DISABLE;
  if (HAL_ADC_Init(&hadc4) != HAL_OK)
  {
    Error_Handler();
  }

  /** Configure Regular Channel
  */
  sConfig.Channel = ADC_CHANNEL_1;
  sConfig.Rank = ADC4_RANK_CHANNEL_NUMBER;
  sConfig.SamplingTime = ADC4_SAMPLINGTIME_COMMON_1;
  sConfig.OffsetNumber = ADC_OFFSET_NONE;
  sConfig.Offset = 0;
  if (HAL_ADC_ConfigChannel(&hadc4, &sConfig) != HAL_OK)
  {
    Error_Handler();
  }
  /* USER CODE BEGIN ADC4_Init 2 */

  /* USER CODE END ADC4_Init 2 */

}

/**
  * @brief COMP1 Initialization Function
  * @param None
  * @retval None
  */
static void MX_COMP1_Init(void)
{

  /* USER CODE BEGIN COMP1_Init 0 */

  /* USER CODE END COMP1_Init 0 */

  /* USER CODE BEGIN COMP1_Init 1 */

  /* USER CODE END COMP1_Init 1 */
  hcomp1.Instance = COMP1;
  hcomp1.Init.InputPlus = COMP_INPUT_PLUS_IO2;
  hcomp1.Init.InputMinus = COMP_INPUT_MINUS_IO1;
  hcomp1.Init.OutputPol = COMP_OUTPUTPOL_NONINVERTED;
  hcomp1.Init.WindowOutput = COMP_WINDOWOUTPUT_EACH_COMP;
  hcomp1.Init.Hysteresis = COMP_HYSTERESIS_MEDIUM;
  hcomp1.Init.BlankingSrce = COMP_BLANKINGSRC_NONE;
  hcomp1.Init.Mode = COMP_POWERMODE_ULTRALOWPOWER;
  hcomp1.Init.WindowMode = COMP_WINDOWMODE_DISABLE;
  hcomp1.Init.TriggerMode = COMP_TRIGGERMODE_NONE;
  if (HAL_COMP_Init(&hcomp1) != HAL_OK)
  {
    Error_Handler();
  }
  /* USER CODE BEGIN COMP1_Init 2 */

  /* USER CODE END COMP1_Init 2 */

}

/**
  * @brief GPDMA1 Initialization Function
  * @param None
  * @retval None
  */
static void MX_GPDMA1_Init(void)
{

  /* USER CODE BEGIN GPDMA1_Init 0 */

  /* USER CODE END GPDMA1_Init 0 */

  /* Peripheral clock enable */
  __HAL_RCC_GPDMA1_CLK_ENABLE();

  /* GPDMA1 interrupt Init */
    HAL_NVIC_SetPriority(GPDMA1_Channel0_IRQn, 0, 0);
    HAL_NVIC_EnableIRQ(GPDMA1_Channel0_IRQn);

  /* USER CODE BEGIN GPDMA1_Init 1 */

  /* USER CODE END GPDMA1_Init 1 */
  /* USER CODE BEGIN GPDMA1_Init 2 */

  /* USER CODE END GPDMA1_Init 2 */

}

/**
  * @brief ICACHE Initialization Function
  * @param None
  * @retval None
  */
static void MX_ICACHE_Init(void)
{

  /* USER CODE BEGIN ICACHE_Init 0 */

  /* USER CODE END ICACHE_Init 0 */

  /* USER CODE BEGIN ICACHE_Init 1 */

  /* USER CODE END ICACHE_Init 1 */

  /** Enable instruction cache in 1-way (direct mapped cache)
  */
  if (HAL_ICACHE_ConfigAssociativityMode(ICACHE_1WAY) != HAL_OK)
  {
    Error_Handler();
  }
  if (HAL_ICACHE_Enable() != HAL_OK)
  {
    Error_Handler();
  }
  /* USER CODE BEGIN ICACHE_Init 2 */

  /* USER CODE END ICACHE_Init 2 */

}

/**
  * @brief OPAMP1 Initialization Function
  * @param None
  * @retval None
  */
static void MX_OPAMP1_Init(void)
{

  /* USER CODE BEGIN OPAMP1_Init 0 */

  /* USER CODE END OPAMP1_Init 0 */

  /* USER CODE BEGIN OPAMP1_Init 1 */

  /* USER CODE END OPAMP1_Init 1 */
  hopamp1.Instance = OPAMP1;
  hopamp1.Init.PowerSupplyRange = OPAMP_POWERSUPPLY_HIGH;
  hopamp1.Init.Mode = OPAMP_STANDALONE_MODE;
  hopamp1.Init.NonInvertingInput = OPAMP_NONINVERTINGINPUT_IO0;
  hopamp1.Init.InvertingInput = OPAMP_INVERTINGINPUT_IO0;
  hopamp1.Init.PowerMode = OPAMP_POWERMODE_LOWPOWER_NORMALSPEED;
  hopamp1.Init.UserTrimming = OPAMP_TRIMMING_FACTORY;
  hopamp1.Init.TrimmingValueP = 16;
  hopamp1.Init.TrimmingValueN = 16;
  hopamp1.Init.TrimmingValuePLowPower = 16;
  hopamp1.Init.TrimmingValueNLowPower = 16;
  if (HAL_OPAMP_Init(&hopamp1) != HAL_OK)
  {
    Error_Handler();
  }
  /* USER CODE BEGIN OPAMP1_Init 2 */

  /* USER CODE END OPAMP1_Init 2 */

}

/**
  * @brief RTC Initialization Function
  * @param None
  * @retval None
  */
static void MX_RTC_Init(void)
{

  /* USER CODE BEGIN RTC_Init 0 */

  /* USER CODE END RTC_Init 0 */

  RTC_PrivilegeStateTypeDef privilegeState = {0};
  RTC_TimeTypeDef sTime = {0};
  RTC_DateTypeDef sDate = {0};

  /* USER CODE BEGIN RTC_Init 1 */

  /* USER CODE END RTC_Init 1 */

  /** Initialize RTC Only
  */
  hrtc.Instance = RTC;
  hrtc.Init.HourFormat = RTC_HOURFORMAT_24;
  hrtc.Init.AsynchPrediv = 127;
  hrtc.Init.SynchPrediv = 255;
  hrtc.Init.OutPut = RTC_OUTPUT_DISABLE;
  hrtc.Init.OutPutRemap = RTC_OUTPUT_REMAP_NONE;
  hrtc.Init.OutPutPolarity = RTC_OUTPUT_POLARITY_HIGH;
  hrtc.Init.OutPutType = RTC_OUTPUT_TYPE_OPENDRAIN;
  hrtc.Init.OutPutPullUp = RTC_OUTPUT_PULLUP_NONE;
  hrtc.Init.BinMode = RTC_BINARY_NONE;
  if (HAL_RTC_Init(&hrtc) != HAL_OK)
  {
    Error_Handler();
  }
  privilegeState.rtcPrivilegeFull = RTC_PRIVILEGE_FULL_NO;
  privilegeState.backupRegisterPrivZone = RTC_PRIVILEGE_BKUP_ZONE_NONE;
  privilegeState.backupRegisterStartZone2 = RTC_BKP_DR0;
  privilegeState.backupRegisterStartZone3 = RTC_BKP_DR0;
  if (HAL_RTCEx_PrivilegeModeSet(&hrtc, &privilegeState) != HAL_OK)
  {
    Error_Handler();
  }

  /* USER CODE BEGIN Check_RTC_BKUP */

  /* USER CODE END Check_RTC_BKUP */

  /** Initialize RTC and set the Time and Date
  */
  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();
  }

  /** Enable the WakeUp
  */
  if (HAL_RTCEx_SetWakeUpTimer(&hrtc, 0, RTC_WAKEUPCLOCK_RTCCLK_DIV16) != HAL_OK)
  {
    Error_Handler();
  }
  /* USER CODE BEGIN RTC_Init 2 */

  /* USER CODE END RTC_Init 2 */

}

/**
  * @brief UART4 Initialization Function
  * @param None
  * @retval None
  */
static void MX_UART4_Init(void)
{

  /* USER CODE BEGIN UART4_Init 0 */

  /* USER CODE END UART4_Init 0 */

  /* USER CODE BEGIN UART4_Init 1 */

  /* USER CODE END UART4_Init 1 */
  huart4.Instance = UART4;
  huart4.Init.BaudRate = 115200;
  huart4.Init.WordLength = UART_WORDLENGTH_8B;
  huart4.Init.StopBits = UART_STOPBITS_1;
  huart4.Init.Parity = UART_PARITY_NONE;
  huart4.Init.Mode = UART_MODE_TX_RX;
  huart4.Init.HwFlowCtl = UART_HWCONTROL_NONE;
  huart4.Init.OverSampling = UART_OVERSAMPLING_16;
  huart4.Init.OneBitSampling = UART_ONE_BIT_SAMPLE_DISABLE;
  huart4.Init.ClockPrescaler = UART_PRESCALER_DIV1;
  huart4.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;
  if (HAL_UART_Init(&huart4) != HAL_OK)
  {
    Error_Handler();
  }
  if (HAL_UARTEx_SetTxFifoThreshold(&huart4, UART_TXFIFO_THRESHOLD_1_8) != HAL_OK)
  {
    Error_Handler();
  }
  if (HAL_UARTEx_SetRxFifoThreshold(&huart4, UART_RXFIFO_THRESHOLD_1_8) != HAL_OK)
  {
    Error_Handler();
  }
  if (HAL_UARTEx_DisableFifoMode(&huart4) != HAL_OK)
  {
    Error_Handler();
  }
  /* USER CODE BEGIN UART4_Init 2 */

  /* USER CODE END UART4_Init 2 */

}

/**
  * @brief GPIO Initialization Function
  * @param None
  * @retval None
  */
static void MX_GPIO_Init(void)
{
  GPIO_InitTypeDef GPIO_InitStruct = {0};
  /* USER CODE BEGIN MX_GPIO_Init_1 */

  /* USER CODE END MX_GPIO_Init_1 */

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

  /*Configure GPIO pin Output Level */
  HAL_GPIO_WritePin(GPIOC, LED_R_Pin|LED_G_Pin, GPIO_PIN_RESET);

  /*Configure GPIO pin Output Level */
  HAL_GPIO_WritePin(GPIOA, GainSel1_Pin|GainSel2_Pin|EN_MDM_Pin|EM_Off_Pin
                          |pOnOff_Pin, GPIO_PIN_RESET);

  /*Configure GPIO pin Output Level */
  HAL_GPIO_WritePin(MCU_LED_GPIO_Port, MCU_LED_Pin, GPIO_PIN_RESET);

  /*Configure GPIO pins : LED_R_Pin LED_G_Pin */
  GPIO_InitStruct.Pin = LED_R_Pin|LED_G_Pin;
  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
  GPIO_InitStruct.Pull = GPIO_NOPULL;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
  HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);

  /*Configure GPIO pins : GainSel1_Pin GainSel2_Pin EN_MDM_Pin EM_Off_Pin
                           pOnOff_Pin */
  GPIO_InitStruct.Pin = GainSel1_Pin|GainSel2_Pin|EN_MDM_Pin|EM_Off_Pin
                          |pOnOff_Pin;
  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
  GPIO_InitStruct.Pull = GPIO_NOPULL;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
  HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);

  /*Configure GPIO pins : MDM_PState_Pin MDM_IsOn_Pin */
  GPIO_InitStruct.Pin = MDM_PState_Pin|MDM_IsOn_Pin;
  GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
  GPIO_InitStruct.Pull = GPIO_NOPULL;
  HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);

  /*Configure GPIO pin : Temp_L_Pin */
  GPIO_InitStruct.Pin = Temp_L_Pin;
  GPIO_InitStruct.Mode = GPIO_MODE_IT_FALLING;
  GPIO_InitStruct.Pull = GPIO_PULLUP;
  HAL_GPIO_Init(Temp_L_GPIO_Port, &GPIO_InitStruct);

  /*Configure GPIO pin : V_Fu_Trig_Pin */
  GPIO_InitStruct.Pin = V_Fu_Trig_Pin;
  GPIO_InitStruct.Mode = GPIO_MODE_IT_RISING;
  GPIO_InitStruct.Pull = GPIO_NOPULL;
  HAL_GPIO_Init(V_Fu_Trig_GPIO_Port, &GPIO_InitStruct);

  /*Configure GPIO pin : BAT_State_Pin */
  GPIO_InitStruct.Pin = BAT_State_Pin;
  GPIO_InitStruct.Mode = GPIO_MODE_IT_FALLING;
  GPIO_InitStruct.Pull = GPIO_PULLUP;
  HAL_GPIO_Init(BAT_State_GPIO_Port, &GPIO_InitStruct);

  /*Configure GPIO pin : MCU_LED_Pin */
  GPIO_InitStruct.Pin = MCU_LED_Pin;
  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
  GPIO_InitStruct.Pull = GPIO_NOPULL;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
  HAL_GPIO_Init(MCU_LED_GPIO_Port, &GPIO_InitStruct);

  /*Configure GPIO pins : Fu_Pos_Pin Temp_H_Pin */
  GPIO_InitStruct.Pin = Fu_Pos_Pin|Temp_H_Pin;
  GPIO_InitStruct.Mode = GPIO_MODE_IT_FALLING;
  GPIO_InitStruct.Pull = GPIO_PULLUP;
  HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);

  /* EXTI interrupt init*/
  HAL_NVIC_SetPriority(EXTI2_IRQn, 0, 0);
  HAL_NVIC_EnableIRQ(EXTI2_IRQn);

  HAL_NVIC_SetPriority(EXTI6_IRQn, 0, 0);
  HAL_NVIC_EnableIRQ(EXTI6_IRQn);

  HAL_NVIC_SetPriority(EXTI7_IRQn, 0, 0);
  HAL_NVIC_EnableIRQ(EXTI7_IRQn);

  HAL_NVIC_SetPriority(EXTI12_IRQn, 0, 0);
  HAL_NVIC_EnableIRQ(EXTI12_IRQn);

  HAL_NVIC_SetPriority(EXTI15_IRQn, 0, 0);
  HAL_NVIC_EnableIRQ(EXTI15_IRQn);

  /* USER CODE BEGIN MX_GPIO_Init_2 */

  /* USER CODE END MX_GPIO_Init_2 */
}

/* USER CODE BEGIN 4 */
void flashGreenLED(){

	HAL_GPIO_WritePin(LED_G_GPIO_Port, LED_G_Pin, SET);
	HAL_Delay(100);
	HAL_GPIO_WritePin(LED_G_GPIO_Port, LED_G_Pin, RESET);
	HAL_Delay(100);
	HAL_GPIO_WritePin(LED_G_GPIO_Port, LED_G_Pin, SET);
	HAL_Delay(100);
	HAL_GPIO_WritePin(LED_G_GPIO_Port, LED_G_Pin, RESET);
	HAL_Delay(100);
	HAL_GPIO_WritePin(LED_G_GPIO_Port, LED_G_Pin, SET);
	HAL_Delay(100);
	HAL_GPIO_WritePin(LED_G_GPIO_Port, LED_G_Pin, RESET);
	HAL_Delay(100);
}


void flashRedLED(){
	HAL_GPIO_WritePin(LED_R_GPIO_Port, LED_R_Pin, SET);
	HAL_Delay(100);
	HAL_GPIO_WritePin(LED_R_GPIO_Port, LED_R_Pin, RESET);
	HAL_Delay(100);
	HAL_GPIO_WritePin(LED_R_GPIO_Port, LED_R_Pin, SET);
	HAL_Delay(100);
	HAL_GPIO_WritePin(LED_R_GPIO_Port, LED_R_Pin, RESET);
	HAL_Delay(100);
	HAL_GPIO_WritePin(LED_R_GPIO_Port, LED_R_Pin, SET);
	HAL_Delay(100);
	HAL_GPIO_WritePin(LED_R_GPIO_Port, LED_R_Pin, RESET);
	HAL_Delay(100);

}
//__HAL_RCC_PWR_CLK_ENABLE ();
//HAL_PWREx_EnterSHUTDOWNMode();
//HAL_RTC_SetAlarm_IT(&hrtc, &sAlarm, RTC_FORMAT_BCD) != HAL_OK;
//HAL_RTC_SetAlarm_IT(&hrtc, &sAlarm, RTC_FORMAT_BCD);
//HAL_ADC_Start(&hadc4);
//__HAL_RCC_ADC4_CLKAM_ENABLE();
static void Enter_Stop2_Mode(void)
{

	HAL_SuspendTick();
	HAL_PWREx_EnterSTOP2Mode(PWR_SLEEPENTRY_WFI);
}



/* USER CODE END 4 */

/**
  * @brief  This function is executed in case of error occurrence.
  * @retval None
  */
void Error_Handler(void)
{
  /* USER CODE BEGIN Error_Handler_Debug */
  /* User can add his own implementation to report the HAL error return state */
  //NVIC_SystemReset();
  __disable_irq();
  while (1)
  {
  }
  /* USER CODE END Error_Handler_Debug */
}
#ifdef USE_FULL_ASSERT
/**
  * @brief  Reports the name of the source file and the source line number
  *         where the assert_param error has occurred.
  * @param  file: pointer to the source file name
  * @param  line: assert_param error line source number
  * @retval None
  */
void assert_failed(uint8_t *file, uint32_t line)
{
  /* USER CODE BEGIN 6 */
  /* User can add his own implementation to report the file name and line number,
     ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
  /* USER CODE END 6 */
}
#endif /* USE_FULL_ASSERT */