Estoy intentando configurar dos alarmas diferentes en mi STM32L073RZ con el ejemplo dado por StMicroelectronics. El problema es que cuando intento algo como la secuencia de comandos a continuación, solo la primera Alarma activada funciona (en este caso, la Alarma B). Estas alarmas me ayudan a salir del modo de suspensión profunda de mi STM32. ¿Quizás el problema viene de la configuración de mi modo deepSleep? ¿Se puede perder alguna información cuando el dispositivo se despierta?
/*##-3- Configure the RTC Alarm peripheral #################################*/
/* Set Alarm to 02:21:20*/
salarmstructure.Alarm = RTC_ALARM_A;
salarmstructure.AlarmDateWeekDay = RTC_WEEKDAY_MONDAY;
salarmstructure.AlarmDateWeekDaySel = RTC_ALARMDATEWEEKDAYSEL_WEEKDAY;
salarmstructure.AlarmMask = RTC_ALARMMASK_DATEWEEKDAY;
salarmstructure.AlarmSubSecondMask = RTC_ALARMSUBSECONDMASK_NONE;
salarmstructure.AlarmTime.TimeFormat = RTC_HOURFORMAT12_AM;
salarmstructure.AlarmTime.Hours = 0x02;
salarmstructure.AlarmTime.Minutes = 0x21;
salarmstructure.AlarmTime.Seconds = 0x20;
salarmstructure.AlarmTime.SubSeconds = 0x56;
if(HAL_RTC_SetAlarm_IT(&RTCHandle,&salarmstructure,RTC_FORMAT_BCD) != HAL_OK)
{
// Initialization Error
Error_Handler();
}
/* Set Alarm to 02:20:30*/
salarmstructure.Alarm = RTC_ALARM_B;
salarmstructure.AlarmDateWeekDay = RTC_WEEKDAY_MONDAY;
salarmstructure.AlarmDateWeekDaySel = RTC_ALARMDATEWEEKDAYSEL_WEEKDAY;
salarmstructure.AlarmMask = RTC_ALARMMASK_DATEWEEKDAY ;
salarmstructure.AlarmSubSecondMask = RTC_ALARMSUBSECONDMASK_NONE;
salarmstructure.AlarmTime.TimeFormat = RTC_HOURFORMAT12_AM;
salarmstructure.AlarmTime.Hours = 0x02;
salarmstructure.AlarmTime.Minutes = 0x20;
salarmstructure.AlarmTime.Seconds = 0x30;
salarmstructure.AlarmTime.SubSeconds = 0x56;
if(HAL_RTC_SetAlarm_IT(&RTCHandle,&salarmstructure,RTC_FORMAT_BCD) != HAL_OK)
{
/* Initialization Error */
Error_Handler();
}
EDITAR: Después de algunas pruebas, el problema proviene de mi hora RTC. Después de la activación para dejar DeepSleep my RTC Time, vaya a 00:00:00
Si necesita más información, este es mi script completo con la configuración del modo deepSleep y la configuración de las dos alarmas.
#include "main.h"
/** @addtogroup STM32L0xx_HAL_Examples
* @{
*/
/** @addtogroup PWR_STANDBY_RTC
* @{
*/
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* RTC handler declaration */
RTC_HandleTypeDef RTCHandle;
/* Buffer used for displaying Time */
uint8_t aShowTime[50] = {0};
static __IO uint32_t TimingDelay;
/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
static void SystemPower_Config(void);
static void Error_Handler(void);
static void RTC_AlarmConfig(void);
static void RTC_TimeShow(uint8_t* showtime);
int etatFlag = 0;
/* Private functions ---------------------------------------------------------*/
/**
* @brief Main program
* @param None
* @retval None
*/
int main(void)
{
/* STM32L0xx HAL library initialization:
- Configure the Flash prefetch, Flash preread and Buffer caches
- Systick timer is configured by default as source of time base, but user
can eventually implement his proper time base source (a general purpose
timer for example or other time source), keeping in mind that Time base
duration should be kept 1ms since PPP_TIMEOUT_VALUEs are defined and
handled in milliseconds basis.
- Low Level Initialization
*/
HAL_Init();
/* Configure the system clock to 2 MHz */
SystemClock_Config();
/* Configure LED2 */
BSP_LED_Init(LED2);
RTCHandle.Instance = RTC;
/* Configure RTC prescaler and RTC data registers */
/* RTC configured 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();
}
/*##-2- Configure Alarm ####################################################*/
/* Configure RTC Alarm */
//RTC_AlarmConfig();
/* Configure the system Power */
//SystemPower_Config();
/* Check and handle 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);
//etatFlag = 1;
}
//Simon NOWAK
//Branch to verify if this is the first loop for the STM32
//The PWR_FLAG_WU change after a wakeUp or after the interruption of AlarmB
if(__HAL_PWR_GET_FLAG(PWR_FLAG_WU) != SET)
{
RTC_AlarmConfig();
}
/* Configure the system Power */
SystemPower_Config();
/* Insert 5 seconds delay */
HAL_Delay(5000);
/* 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*/
HAL_RTCEx_DeactivateWakeUpTimer(&RTCHandle);
/* Re-enable all used wakeup sources*/
/* ## Setting the Wake up time ############################################*/
/* RTC Wakeup Interrupt Generation:
Wakeup Time Base = (RTC_WAKEUPCLOCK_RTCCLK_DIV /(LSI))
Wakeup Time = Wakeup Time Base * WakeUpCounter
= (RTC_WAKEUPCLOCK_RTCCLK_DIV /(LSI)) * WakeUpCounter
==> WakeUpCounter = Wakeup Time / Wakeup Time Base
To configure the wake up timer to 4s the WakeUpCounter is set to 0x1FFF:
RTC_WAKEUPCLOCK_RTCCLK_DIV = RTCCLK_Div16 = 16
Wakeup Time Base = 16 /(~39.000KHz) = ~0,410 ms
Wakeup Time = ~4s = 0,410ms * WakeUpCounter
==> WakeUpCounter = ~4s/0,410ms = 9750 = 0x2616 */
/* Clear all related wakeup flags */
__HAL_PWR_CLEAR_FLAG(PWR_FLAG_WU);
//Re-enable all used wakeup sources
//
HAL_RTCEx_SetWakeUpTimer_IT(&RTCHandle, 0xFFF, RTC_WAKEUPCLOCK_CK_SPRE_16BITS);
/* Enter the Standby mode */
HAL_PWR_EnterSTANDBYMode();
while (1)
{
}
}
/**
* @brief System Clock Configuration
* The system Clock is configured as follow :
* System Clock source = MSI
* SYSCLK(Hz) = 2000000
* HCLK(Hz) = 2000000
* AHB Prescaler = 1
* APB1 Prescaler = 1
* APB2 Prescaler = 1
* Flash Latency(WS) = 0
* Main regulator output voltage = Scale3 mode
* @retval None
*/
void SystemClock_Config(void)
{
RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
RCC_OscInitTypeDef RCC_OscInitStruct = {0};
/* Enable MSI Oscillator */
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_MSI;
RCC_OscInitStruct.MSIState = RCC_MSI_ON;
RCC_OscInitStruct.MSIClockRange = RCC_MSIRANGE_5;
RCC_OscInitStruct.MSICalibrationValue=0x00;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
if (HAL_RCC_OscConfig(&RCC_OscInitStruct)!= HAL_OK)
{
/* Initialization Error */
while(1);
}
/* Select MSI 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_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 */
while(1);
}
/* 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_SCALE3);
/* Disable Power Control clock */
__HAL_RCC_PWR_CLK_DISABLE();
}
/**
* @brief System Power Configuration
* The system Power is configured as follow :
* + RTC Clocked by LSI
* + VREFINT OFF, with fast wakeup enabled
* + No IWDG
* + Automatic Wakeup using RTC clocked by LSI (after ~4s)
* @param None
* @retval None
*/
static void SystemPower_Config(void)
{
/* Enable Power Control clock */
__HAL_RCC_PWR_CLK_ENABLE();
HAL_PWREx_EnableUltraLowPower();
/* Enable the fast wake up from Ultra low power mode */
HAL_PWREx_EnableFastWakeUp();
/* Configure RTC */
RTCHandle.Instance = RTC;
/* Set the RTC time base to 1s */
/* Configure RTC prescaler and RTC data registers as follow:
- 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();
}
}
/**
* @brief This function is executed in case of error occurrence.
* @param None
* @retval None
*/
static void Error_Handler(void)
{
/* Turn on the LED2 */
BSP_LED_On(LED2);
while(1)
{
}
}
#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
/**
* @brief Alarm callback
* @param hrtc : RTC handle
* @retval None
*/
void HAL_RTC_AlarmAEventCallback(RTC_HandleTypeDef *hrtc)
{
/* Turn LED2 on: Alarm generation */
BSP_LED_On(LED2);
}
/**
* @brief Configure the current time and date.
* @param None
* @retval None
*/
static void RTC_AlarmConfig(void)
{
RTC_DateTypeDef sdatestructure;
RTC_TimeTypeDef stimestructure;
RTC_AlarmTypeDef salarmstructure;
RTC_AlarmTypeDef salarmstructure2;
/*##-1- Configure the Date #################################################*/
/* Set Date: Tuesday February 18th 2014 */
sdatestructure.Year = 0x14;
sdatestructure.Month = RTC_MONTH_FEBRUARY;
sdatestructure.Date = 0x18;
sdatestructure.WeekDay = RTC_WEEKDAY_TUESDAY;
if(HAL_RTC_SetDate(&RTCHandle,&sdatestructure,RTC_FORMAT_BCD) != HAL_OK)
{
/* Initialization Error */
BSP_LED_On(LED2);
Error_Handler();
}
/*##-2- Configure the Time #################################################*/
/* Set Time: 02:20:00 */
stimestructure.Hours = 0x02;
stimestructure.Minutes = 0x20;
stimestructure.Seconds = 0x00;
stimestructure.TimeFormat = RTC_HOURFORMAT12_AM;
stimestructure.DayLightSaving = RTC_DAYLIGHTSAVING_NONE ;
stimestructure.StoreOperation = RTC_STOREOPERATION_RESET;
if(HAL_RTC_SetTime(&RTCHandle,&stimestructure,RTC_FORMAT_BCD) != HAL_OK)
{
/* Initialization Error */
BSP_LED_On(LED2);
Error_Handler();
}
/*##-3- Configure the RTC Alarm peripheral #################################*/
/* Set Alarm to 02:21:20*/
salarmstructure.Alarm = RTC_ALARM_A;
salarmstructure.AlarmDateWeekDay = RTC_WEEKDAY_MONDAY;
salarmstructure.AlarmDateWeekDaySel = RTC_ALARMDATEWEEKDAYSEL_WEEKDAY;
salarmstructure.AlarmMask = RTC_ALARMMASK_DATEWEEKDAY;
salarmstructure.AlarmSubSecondMask = RTC_ALARMSUBSECONDMASK_NONE;
salarmstructure.AlarmTime.TimeFormat = RTC_HOURFORMAT12_AM;
salarmstructure.AlarmTime.Hours = 0x02;
salarmstructure.AlarmTime.Minutes = 0x21;
salarmstructure.AlarmTime.Seconds = 0x20;
salarmstructure.AlarmTime.SubSeconds = 0x56;
if(HAL_RTC_SetAlarm_IT(&RTCHandle,&salarmstructure,RTC_FORMAT_BCD) != HAL_OK)
{
// Initialization Error
Error_Handler();
}
/* Set Alarm to 02:20:30*/
salarmstructure.Alarm = RTC_ALARM_B;
salarmstructure.AlarmDateWeekDay = RTC_WEEKDAY_MONDAY;
salarmstructure.AlarmDateWeekDaySel = RTC_ALARMDATEWEEKDAYSEL_WEEKDAY;
salarmstructure.AlarmMask = RTC_ALARMMASK_DATEWEEKDAY ;
salarmstructure.AlarmSubSecondMask = RTC_ALARMSUBSECONDMASK_NONE;
salarmstructure.AlarmTime.TimeFormat = RTC_HOURFORMAT12_AM;
salarmstructure.AlarmTime.Hours = 0x02;
salarmstructure.AlarmTime.Minutes = 0x20;
salarmstructure.AlarmTime.Seconds = 0x30;
salarmstructure.AlarmTime.SubSeconds = 0x56;
if(HAL_RTC_SetAlarm_IT(&RTCHandle,&salarmstructure,RTC_FORMAT_BCD) != HAL_OK)
{
/* Initialization Error */
Error_Handler();
}
}
/**
* @brief Display the current time.
* @param showtime : pointer to buffer
* @retval None
*/
static void RTC_TimeShow(uint8_t* showtime)
{
RTC_DateTypeDef sdatestructureget;
RTC_TimeTypeDef stimestructureget;
/* Get the RTC current Time */
HAL_RTC_GetTime(&RTCHandle, &stimestructureget, RTC_FORMAT_BIN);
/* Get the RTC current Date */
HAL_RTC_GetDate(&RTCHandle, &sdatestructureget, RTC_FORMAT_BIN);
/* Display time Format : hh:mm:ss */
sprintf((char*)showtime,"%02d:%02d:%02d",stimestructureget.Hours, stimestructureget.Minutes, stimestructureget.Seconds);
}
#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
Gracias por su atención y por su ayuda.