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/**
******************************************************************************
* @file PWR/PWR_CurrentConsumption/Src/main.c
* @author MCD Application Team
* @brief This sample code shows how to use STM32F4xx PWR HAL API to measure
* different Low Power modes current consumption.
******************************************************************************
* @attention
*
* Copyright (c) 2017 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 STM32F4xx_HAL_Examples
* @{
*/
/** @addtogroup PWR_CurrentConsumption
* @{
*/
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
__IO uint32_t uwCounter = 0;
/* Private function prototypes -----------------------------------------------*/
static void SystemClock_Config(void);
/* Private functions ---------------------------------------------------------*/
/**
* @brief Main program
* @param None
* @retval None
*/
int main(void)
{
/* STM32F4xx 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 LED3 and LED4 */
BSP_LED_Init(LED3);
BSP_LED_Init(LED4);
/* Configure the system clock to 180 MHz */
SystemClock_Config();
/* 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();
/* Exit USB Phy from low power mode */
USB_PhyExitFromLowPowerMode();
/* Turn LED4 On */
BSP_LED_On(LED4);
}
/* Infinite loop */
while(1)
{
/* Configure Key Button */
BSP_PB_Init(BUTTON_KEY, BUTTON_MODE_GPIO);
/* Wait until Key button is pressed to enter the Low Power mode */
while(BSP_PB_GetState(BUTTON_KEY) != RESET)
{
}
/* Loop while Key button is maintained pressed */
while(BSP_PB_GetState(BUTTON_KEY) == RESET)
{
}
/* Ethernet PHY and USB PHY must be in low power mode in order to have the lowest current consumption */
/* Enter USB PHY to Lowpower Mode */
USB_PhyEnterLowPowerMode();
/* Enter Ethernet PHY to Power Down Mode */
ETH_PhyEnterPowerDownMode();
#if defined (SLEEP_MODE)
/* Sleep Mode Entry
- System Running at PLL (180MHz)
- Flash 5 wait state
- Instruction and Data caches ON
- Prefetch ON
- Code running from Internal FLASH
- All peripherals disabled.
- Wakeup using EXTI Line (Key Button PC.13)
*/
SleepMode_Measure();
#elif defined (STOP_MODE)
/* STOP Mode Entry
- RTC Clocked by LSE/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 Wakeup using RTC clocked by LSE/LSI (after ~20s)
*/
StopMode_Measure();
#elif defined (STOP_UNDERDRIVE_MODE)
/* Under-Drive STOP Mode Entry
- RTC Clocked by LSI
- Regulator in LP mode
- Under drive feature enabled
- 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)
*/
StopUnderDriveMode_Measure();
#elif defined (STANDBY_MODE)
/* STANDBY Mode Entry
- Backup SRAM and RTC OFF
- IWDG and LSI OFF
- Wakeup using WakeUp Pin (PA.00)
*/
StandbyMode_Measure();
#elif defined (STANDBY_RTC_MODE)
/* STANDBY Mode with RTC on LSE/LSI Entry
- RTC Clocked by LSE or LSI
- IWDG OFF and LSI OFF if not used as RTC Clock source
- Backup SRAM OFF
- Automatic Wakeup using RTC clocked by LSE/LSI (after ~20s)
*/
StandbyRTCMode_Measure();
#elif defined (STANDBY_RTC_BKPSRAM_MODE)
/* STANDBY Mode with RTC on LSE/LSI Entry
- RTC Clocked by LSE/LSI
- Backup SRAM ON
- IWDG OFF
- Automatic Wakeup using RTC clocked by LSE/LSI (after ~20s)
*/
StandbyRTCBKPSRAMMode_Measure();
#endif
}
}
/**
* @brief System Clock Configuration
* The system Clock is configured as follow :
* System Clock source = PLL (HSE)
* SYSCLK(Hz) = 180000000
* HCLK(Hz) = 180000000
* AHB Prescaler = 1
* APB1 Prescaler = 4
* APB2 Prescaler = 2
* HSE Frequency(Hz) = 25000000
* PLL_M = 25
* PLL_N = 360
* PLL_P = 2
* PLL_Q = 7
* VDD(V) = 3.3
* Main regulator output voltage = Scale1 mode
* Flash Latency(WS) = 5
* @param None
* @retval None
*/
static void SystemClock_Config(void)
{
RCC_ClkInitTypeDef RCC_ClkInitStruct;
RCC_OscInitTypeDef RCC_OscInitStruct;
/* Enable Power Control clock */
__HAL_RCC_PWR_CLK_ENABLE();
/* The voltage scaling allows optimizing the power consumption when the device is
clocked below the maximum system frequency, to update the voltage scaling value
regarding system frequency refer to product datasheet. */
__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
/* Enable HSE Oscillator and activate PLL with HSE as source */
RCC_OscInitStruct.HSEState = RCC_HSE_ON;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
#ifdef RTC_CLOCK_SOURCE_LSE
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE | RCC_OSCILLATORTYPE_LSE;
RCC_OscInitStruct.LSEState = RCC_LSE_ON;
#elif defined (RTC_CLOCK_SOURCE_LSI)
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE | RCC_OSCILLATORTYPE_LSI;
RCC_OscInitStruct.LSIState = RCC_LSI_ON;
#endif /* RTC_CLOCK_SOURCE_LSE */
RCC_OscInitStruct.PLL.PLLM = 25;
RCC_OscInitStruct.PLL.PLLN = 360;
RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
RCC_OscInitStruct.PLL.PLLQ = 7;
if(HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
{
Error_Handler();
}
/* Activate the Over-Drive mode */
if(HAL_PWREx_EnableOverDrive() != HAL_OK)
{
Error_Handler();
}
/* 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;
if(HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_5) != HAL_OK)
{
Error_Handler();
}
}
/**
* @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 */
}
/**
* @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)
{
if(GPIO_Pin == KEY_BUTTON_PIN)
{
/* NOTE : add the specific code to handle the EXTI interrupts */
}
}
#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
/**
* @}
*/
/**
* @}
*/