OrgST-Microelectronics
/
STM32CubeF4
mirror of https://github.com/STMicroelectronics/STM32CubeF4.git
1
0
Fork 0
Code Issues Releases Wiki Activity
STM32CubeF4/Projects/STM324x9I_EVAL/Examples/PWR/PWR_STANDBY/Src/main.c

377 lines
12 KiB
C
Raw Blame History

/**
******************************************************************************
* @file PWR/PWR_STANDBY/Src/main.c
* @author MCD Application Team
* @brief This sample code shows how to use STM32F4xx PWR HAL API to enter
* and exit the Standby mode.
******************************************************************************
* @attention
*
* <h2><center>&copy; COPYRIGHT(c) 2017 STMicroelectronics</center></h2>
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. Neither the name of STMicroelectronics nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
******************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#include "main.h"
/** @addtogroup STM32F4xx_HAL_Examples
* @{
*/
/** @addtogroup PWR_STANDBY
* @{
*/
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
#define LED_TOGGLE_DELAY 100
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* RTC handler declaration */
RTC_HandleTypeDef RTCHandle;
RTC_TimeTypeDef RTC_TimeStructure;
RTC_DateTypeDef RTC_DateStructure;
RTC_AlarmTypeDef RTC_AlarmStructure;
static __IO uint32_t TimingDelay;
/* Private function prototypes -----------------------------------------------*/
static void SystemClock_Config(void);
static void RTC_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 LED1, LED2 */
BSP_LED_Init(LED1);
BSP_LED_Init(LED2);
/* Configure the system clock to 168 MHz */
SystemClock_Config();
/* Enable Power Clock */
__HAL_RCC_PWR_CLK_ENABLE();
/* Check and Clear the Wakeup flag */
if (__HAL_PWR_GET_FLAG(PWR_FLAG_WU) != RESET)
{
__HAL_PWR_CLEAR_FLAG(PWR_FLAG_WU);
}
/* Initialize the Key push-button to generate external interrupts */
BSP_PB_Init(BUTTON_KEY, BUTTON_MODE_EXTI);
/* RTC configuration */
RTC_Config();
/* Turn on LED1 */
BSP_LED_On(LED1);
/* Enable WakeUp Pin PWR_WAKEUP_PIN1 connected to PA.00 */
HAL_PWR_EnableWakeUpPin(PWR_WAKEUP_PIN1);
while (1)
{
}
}
/**
* @brief System Clock Configuration
* The system Clock is configured as follow :
* System Clock source = PLL (HSE)
* SYSCLK(Hz) = 168000000
* HCLK(Hz) = 168000000
* AHB Prescaler = 1
* APB1 Prescaler = 4
* APB2 Prescaler = 2
* HSE Frequency(Hz) = 25000000
* PLL_M = 25
* PLL_N = 336
* PLL_P = 2
* PLL_Q = 7
* VDD(V) = 3.3
* 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.OscillatorType = RCC_OSCILLATORTYPE_HSE;
RCC_OscInitStruct.HSEState = RCC_HSE_ON;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
RCC_OscInitStruct.PLL.PLLM = 25;
RCC_OscInitStruct.PLL.PLLN = 336;
RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
RCC_OscInitStruct.PLL.PLLQ = 7;
if(HAL_RCC_OscConfig(&RCC_OscInitStruct) != 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 Configures the RTC.
* @param None
* @retval None
*/
static void RTC_Config(void)
{
/* Enable Power Clock*/
__HAL_RCC_PWR_CLK_ENABLE();
/* Allow Access to RTC Backup domaine */
HAL_PWR_EnableBkUpAccess();
RTCHandle.Instance = RTC;
/* Check if the system was resumed from StandBy mode */
if(__HAL_PWR_GET_FLAG(PWR_FLAG_SB) != RESET)
{
/* Clear StandBy flag */
__HAL_PWR_CLEAR_FLAG(PWR_FLAG_SB);
/* Disable the write protection for RTC registers */
__HAL_RTC_WRITEPROTECTION_DISABLE(&RTCHandle);
/* Wait for RTC APB registers synchronisation (needed after start-up from Reset)*/
if (HAL_RTC_WaitForSynchro(&RTCHandle) != HAL_OK)
{
/* Initialization Error */
Error_Handler();
}
/* Enable the write protection for RTC registers */
__HAL_RTC_WRITEPROTECTION_ENABLE(&RTCHandle);
/* No need to configure the RTC as the RTC config(clock source, enable,
prescaler,...) are kept after wake-up from STANDBY */
}
else
{
/* Reset Backup Domaine */
__HAL_RCC_BACKUPRESET_FORCE();
__HAL_RCC_BACKUPRESET_RELEASE();
/* Set the RTC time base to 1s */
/* Configure RTC prescaler and RTC data registers as follows:
- Hour Format = Format 24
- Asynch Prediv = Value according to source clock
- Synch Prediv = Value according to source clock
- OutPut = Output Disable
- OutPutPolarity = High Polarity
- OutPutType = Open Drain */
RTCHandle.Init.HourFormat = RTC_HOURFORMAT_24;
RTCHandle.Init.AsynchPrediv = RTC_ASYNCH_PREDIV;
RTCHandle.Init.SynchPrediv = RTC_SYNCH_PREDIV;
RTCHandle.Init.OutPut = RTC_OUTPUT_DISABLE;
RTCHandle.Init.OutPutPolarity = RTC_OUTPUT_POLARITY_HIGH;
RTCHandle.Init.OutPutType = RTC_OUTPUT_TYPE_OPENDRAIN;
if (HAL_RTC_Init(&RTCHandle) != HAL_OK)
{
/* Initialization Error */
Error_Handler();
}
/* Set the time to 01h 00mn 00s AM */
RTC_TimeStructure.TimeFormat = RTC_HOURFORMAT12_AM;
RTC_TimeStructure.Hours = 0x01;
RTC_TimeStructure.Minutes = 0x00;
RTC_TimeStructure.Seconds = 0x00;
if (HAL_RTC_SetTime(&RTCHandle, &RTC_TimeStructure, RTC_FORMAT_BCD) == HAL_ERROR)
{
/* Initialization Error */
Error_Handler();
}
}
}
/**
* @brief This function is executed in case of error occurrence.
* @param None
* @retval None
*/
void Error_Handler(void)
{
/* Turn LED2 on */
BSP_LED_On(LED2);
while(1)
{
}
}
/**
* @brief SYSTICK callback
* @param None
* @retval None
*/
void HAL_SYSTICK_Callback(void)
{
HAL_IncTick();
if (TimingDelay != 0)
{
TimingDelay--;
}
else
{
/* Toggle LED1 */
BSP_LED_Toggle(LED1);
TimingDelay = LED_TOGGLE_DELAY;
}
}
/**
* @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)
{
HAL_RTC_GetTime(&RTCHandle, &RTC_TimeStructure, RTC_FORMAT_BIN);
HAL_RTC_GetDate(&RTCHandle, &RTC_DateStructure, RTC_FORMAT_BIN);
/* Set the alarm to current time + 5s */
RTC_AlarmStructure.Alarm = RTC_ALARM_A;
RTC_AlarmStructure.AlarmTime.TimeFormat = RTC_TimeStructure.TimeFormat;
RTC_AlarmStructure.AlarmTime.Hours = RTC_TimeStructure.Hours;
RTC_AlarmStructure.AlarmTime.Minutes = RTC_TimeStructure.Minutes;
RTC_AlarmStructure.AlarmTime.Seconds = (RTC_TimeStructure.Seconds + 0x05) % 60;
RTC_AlarmStructure.AlarmDateWeekDay = 0x31;
RTC_AlarmStructure.AlarmDateWeekDaySel = RTC_ALARMDATEWEEKDAYSEL_DATE;
RTC_AlarmStructure.AlarmMask = RTC_ALARMMASK_DATEWEEKDAY | RTC_ALARMMASK_HOURS | RTC_ALARMMASK_MINUTES;
RTC_AlarmStructure.AlarmSubSecondMask = RTC_ALARMSUBSECONDMASK_NONE;
/* The Following Wakeup sequence is highly recommended prior to each Standby
mode entry mainly when using more than one wakeup source this is to not
miss any wakeup event:
- Disable all used wakeup sources,
- Clear all related wakeup flags,
- Re-enable all used wakeup sources,
- Enter the Standby mode.
*/
/*## Disable all used wakeup sources #####################################*/
/* Disable Wake-up timer */
HAL_PWR_DisableWakeUpPin(PWR_WAKEUP_PIN1);
/* Disable RTC Alarm */
HAL_RTC_DeactivateAlarm(&RTCHandle, RTC_ALARM_A);
/*## Clear all related wakeup flags ######################################*/
/* Clear PWR wake up Flag */
__HAL_PWR_CLEAR_FLAG(PWR_FLAG_WU);
/* Clear the Alarm Flag */
__HAL_RTC_ALARM_CLEAR_FLAG(&RTCHandle, RTC_FLAG_ALRAF);
/*## Re-enable all used wakeup sources ###################################*/
/* Set RTC alarm */
if(HAL_RTC_SetAlarm_IT(&RTCHandle, &RTC_AlarmStructure, RTC_FORMAT_BIN) != HAL_OK)
{
/* Initialization Error */
Error_Handler();
}
/* Enable WKUP pin */
HAL_PWR_EnableWakeUpPin(PWR_WAKEUP_PIN1);
/* Turn LED1 off */
BSP_LED_Off(LED1);
/*## Enter Standby Mode ##################################################*/
HAL_PWR_EnterSTANDBYMode();
}
}
#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
/**
* @}
*/
/**
* @}
*/
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
Reference in New Issue View Git Blame Copy Permalink