STM32CubeF7/Projects/STM32F767ZI-Nucleo/Examples/PWR/PWR_CurrentConsumption/Src/main.c

/**
  ******************************************************************************
  * @file    PWR/PWR_CurrentConsumption/Src/main.c 
  * @author  MCD Application Team
  * @brief   This example shows how to use STM32F7xx PWR HAL API to enter
  *          and exit the stop mode.
  ******************************************************************************
  * @attention
  *
  * Copyright (c) 2016 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.
  *
  ******************************************************************************
  */

/* Includes ------------------------------------------------------------------*/
#include "main.h"

/** @addtogroup STM32F7xx_HAL_Examples
  * @{
  */

/** @addtogroup PWR_CurrentConsumption
  * @{
  */ 

/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
__IO uint32_t uwCounter = 0;

/* Private function prototypes -----------------------------------------------*/
static void MPU_Config(void);
static void SystemClock_Config(void);
static void CPU_CACHE_Enable(void);

/* Private functions ---------------------------------------------------------*/

/**
  * @brief  Main program
  * @param  None
  * @retval None
  */
int main(void)
{ 
  /* Configure the MPU attributes */
  MPU_Config();

  /* Enable the CPU Cache */
  CPU_CACHE_Enable();
  
  /* STM32F7xx HAL library initialization:
       - Configure the Flash prefetch, instruction and Data caches
       - Configure the Systick to generate an interrupt each 1 msec
       - Set NVIC Group Priority to 4
       - Global MSP (MCU Support Package) initialization
     */
  HAL_Init();

  /* Configure the system clock to 216 MHz */
  SystemClock_Config();
    
  /* Configure LED1 and LED3 */
  BSP_LED_Init(LED1);
  BSP_LED_Init(LED3);

  /* Enable Power Clock */
  __HAL_RCC_PWR_CLK_ENABLE();
  
  /* Check and handle if the system was resumed from Standby mode */ 
  if(__HAL_PWR_GET_FLAG(PWR_FLAG_SB) != RESET)
  {
    __HAL_PWR_CLEAR_FLAG(PWR_FLAG_SB);
  
    /* Exit Ethernet Phy from low power mode */
    ETH_PhyExitFromPowerDownMode();
  
    /* Infinite loop */
    while (1)
    {
      /* Toggle LED1 */
      BSP_LED_Toggle(LED1);
   
      /* Insert a 100ms delay */
      HAL_Delay(100);
    }
  }
  
  /* Configure USER Button */
  BSP_PB_Init(BUTTON_KEY, BUTTON_MODE_GPIO);

  /* Wait until USER button is pressed to enter the Low Power mode */
  while(BSP_PB_GetState(BUTTON_KEY) == RESET)
  {
    /* Toggle LED1 */
    BSP_LED_Toggle(LED1);
   
    /* Insert 1s Delay */
    HAL_Delay(1000);
  }
  /* Loop while USER Button is maintained pressed */
  while(BSP_PB_GetState(BUTTON_KEY) != RESET)
  {
  }
  
  /* Ethernet PHY must be in low power mode in order to have the lowest current consumption */
  ETH_PhyEnterPowerDownMode();

#if defined (SLEEP_MODE)
  /* Sleep Mode Entry 
      - System Running at PLL (216 MHz)
      - Flash 5 wait state
      - Instruction and Data caches ON
      - Prefetch ON
      - Code running from Internal FLASH
      - All peripherals disabled.
      - Wake-up using EXTI Line (User Button)
   */
  SleepMode_Measure();
#elif defined (STOP_MODE)
  /* STOP Mode Entry 
      - RTC Clocked by LSI
      - Regulator in LP mode
      - HSI, HSE OFF and LSI OFF if not used as RTC Clock source  
      - No IWDG
      - FLASH in deep power down mode
      - Automatic Wake-up using RTC clocked by LSI (after ~20s)
   */
  StopMode_Measure();
  
#elif defined (STANDBY_MODE)
  /* STANDBY Mode Entry 
      - Backup SRAM and RTC OFF
      - IWDG and LSI OFF
      - Wake-up using WakeUp Pin (PA.00)
   */
  StandbyMode_Measure();

#elif defined (STANDBY_RTC_MODE)
  /* STANDBY Mode with RTC on LSI Entry 
      - RTC Clocked by LSI
      - IWDG OFF and LSI OFF if not used as RTC Clock source
      - Backup SRAM OFF
      - Automatic Wake-up using RTC clocked by LSI (after ~20s)
   */
  StandbyRTCMode_Measure();

#elif defined (STANDBY_BKPSRAM_MODE)
  /* STANDBY Mode Entry
    - Backup SRAM ON
    - IWDG OFF
    - Wake-up using WakeUp Pin (PA.00)
    */
  StandbyBKPSRAMMode_Measure();
#endif

  if(uwCounter != 0)
  {
    BSP_LED_Init(LED1);
  }
  
  /* Infinite loop */
  while (1)
  {
    /* Toggle LED1 */
    BSP_LED_Toggle(LED1);
   
    /* Inserted Delay */
    HAL_Delay(100);
  }
}

/**
  * @brief  System Clock Configuration
  *         The system Clock is configured as follows: 
  *            System Clock source            = PLL (HSE)
  *            SYSCLK(Hz)                     = 216000000
  *            HCLK(Hz)                       = 216000000
  *            AHB Prescaler                  = 1
  *            APB1 Prescaler                 = 4
  *            APB2 Prescaler                 = 2
  *            HSE Frequency(Hz)              = 8000000
  *            PLL_M                          = 8
  *            PLL_N                          = 432
  *            PLL_P                          = 2
  *            PLL_Q                          = 9
  *            PLL_R                          = 7
  *            VDD(V)                         = 3.3
  *            Main regulator output voltage  = Scale1 mode
  *            Flash Latency(WS)              = 7
  * @param  None
  * @retval None
  */
static void SystemClock_Config(void)
{
  RCC_ClkInitTypeDef RCC_ClkInitStruct;
  RCC_OscInitTypeDef RCC_OscInitStruct;
  HAL_StatusTypeDef ret = HAL_OK;

  /* Enable HSE Oscillator and activate PLL with HSE as source */
  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
  RCC_OscInitStruct.HSEState = RCC_HSE_BYPASS;
  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
  RCC_OscInitStruct.PLL.PLLM = 8;
  RCC_OscInitStruct.PLL.PLLN = 432;
  RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
  RCC_OscInitStruct.PLL.PLLQ = 9;
  RCC_OscInitStruct.PLL.PLLR = 7;
  ret = HAL_RCC_OscConfig(&RCC_OscInitStruct);
  
  if(ret != HAL_OK)
  {
    while(1) {}; 
  }

  /* Activate the OverDrive to reach the 216 Mhz Frequency */
  if(HAL_PWREx_EnableOverDrive() != HAL_OK)
  {
    while(1) {};
  }
  
  /* Select PLL as system clock source and configure the HCLK, PCLK1 and PCLK2 
     clocks dividers */
  RCC_ClkInitStruct.ClockType = (RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2);
  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4;  
  RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2;  
  ret = HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_7);
  if(ret != HAL_OK)
  {
    while(1) {};  
  }
}

/**
  * @brief  This function is executed in case of error occurrence.
  * @param  None
  * @retval None
  */
void Error_Handler(void)
{
  /* Turn LED3 on */
  BSP_LED_On(LED3);
  while(1)
  {
  }
}
    
/**
  * @brief SYSTICK callback
  * @param None
  * @retval None
  */
void HAL_SYSTICK_Callback(void)
{
  HAL_IncTick();
}

/**
  * @brief  Wake Up Timer callback
  * @param  hrtc : hrtc handle
  * @retval None
  */
void HAL_RTCEx_WakeUpTimerEventCallback(RTC_HandleTypeDef *hrtc)
{
  /* NOTE : add the specific code to handle the RTC wake up interrupt */
  uwCounter = 1;
}

/**
  * @brief EXTI line detection callbacks
  * @param GPIO_Pin: Specifies the pins connected EXTI line
  * @retval None
  */
void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin)
{
  /* Configure LED1 */
  BSP_LED_Init(LED1);
  /* NOTE : add the specific code to handle the wake up button interrupt */
  if(GPIO_Pin == USER_BUTTON_PIN)
  { 
    uwCounter = 2;
  }
}

/**
  * @brief  CPU L1-Cache enable.
  * @param  None
  * @retval None
  */
static void CPU_CACHE_Enable(void)
{
  /* Enable I-Cache */
  SCB_EnableICache();

  /* Enable D-Cache */
  SCB_EnableDCache();
}


/**
  * @brief  Configure the MPU attributes
  * @param  None
  * @retval None
  */
static void MPU_Config(void)
{
  MPU_Region_InitTypeDef MPU_InitStruct;

  /* Disable the MPU */
  HAL_MPU_Disable();

  /* Configure the MPU as Strongly ordered for not defined regions */
  MPU_InitStruct.Enable = MPU_REGION_ENABLE;
  MPU_InitStruct.BaseAddress = 0x00;
  MPU_InitStruct.Size = MPU_REGION_SIZE_4GB;
  MPU_InitStruct.AccessPermission = MPU_REGION_NO_ACCESS;
  MPU_InitStruct.IsBufferable = MPU_ACCESS_NOT_BUFFERABLE;
  MPU_InitStruct.IsCacheable = MPU_ACCESS_NOT_CACHEABLE;
  MPU_InitStruct.IsShareable = MPU_ACCESS_SHAREABLE;
  MPU_InitStruct.Number = MPU_REGION_NUMBER0;
  MPU_InitStruct.TypeExtField = MPU_TEX_LEVEL0;
  MPU_InitStruct.SubRegionDisable = 0x87;
  MPU_InitStruct.DisableExec = MPU_INSTRUCTION_ACCESS_DISABLE;

  HAL_MPU_ConfigRegion(&MPU_InitStruct);

  /* Enable the MPU */
  HAL_MPU_Enable(MPU_PRIVILEGED_DEFAULT);
}

#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 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) */

  /* Infinite loop */
  while (1)
  {
  }
}
#endif

/**
  * @}
  */

/**
  * @}
  */