Posted on October 21, 2017 at 01:06I was running RTC with stm32f051. I use cmsis and using LSE(32.768 khz) for rtc.
I use this code for setup rtc with alarm . when interrupt of rtc is running the other section of code stop working but the interrupt routin of rtc is working and turn off and on one buzzer every seconds.
How can I correct this?
/**
* @brief Configure the RTC peripheral by selecting the clock source.
* @param None
* @retval None
*/
static void RTC_Config1(void)
{
RTC_InitTypeDef RTC_InitStructure;
RTC_TimeTypeDef RTC_TimeStruct;
//NVIC_InitTypeDef NVIC_InitStructure;
/* Enable the PWR clock */
RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR, ENABLE);
/* Allow access to RTC */
PWR_BackupAccessCmd(ENABLE);
/* Reset RTC Domain */
RCC_BackupResetCmd(ENABLE);
RCC_BackupResetCmd(DISABLE);
RCC_LSEDriveConfig(RCC_LSEDrive_High);
/* Enable the LSE OSC */
RCC_LSEConfig(RCC_LSE_ON);
/* Wait till LSE is ready */
while(RCC_GetFlagStatus(RCC_FLAG_LSERDY) == RESET)
{}
/* Select the RTC Clock Source */
RCC_RTCCLKConfig(RCC_RTCCLKSource_LSE);
/* Configure the RTC data register and RTC prescaler */
/* ck_spre(1Hz) = RTCCLK(LSI) /(AsynchPrediv + 1)*(SynchPrediv + 1)*/
RTC_InitStructure.RTC_AsynchPrediv = 0x7F;
RTC_InitStructure.RTC_SynchPrediv = 0xFF;
RTC_InitStructure.RTC_HourFormat = RTC_HourFormat_24;
RTC_Init(&RTC_InitStructure);
/* Set the time to 00h 00mn 00s AM */
RTC_TimeStruct.RTC_H12 = RTC_H12_AM;
RTC_TimeStruct.RTC_Hours = 0x00;
RTC_TimeStruct.RTC_Minutes = 0x00;
RTC_TimeStruct.RTC_Seconds = 0x00;
RTC_SetTime(RTC_Format_BCD, &RTC_TimeStruct);
///////////////////////////////////////////////////////////////////////////////////////////////////////
}
/**
* @brief Configures the RTC Alarm.
* @param None
* @retval None
*/
static void RTC_AlarmConfig(void)
{
EXTI_InitTypeDef EXTI_InitStructure;
RTC_AlarmTypeDef RTC_AlarmStructure;
NVIC_InitTypeDef NVIC_InitStructure;
RTC_AlarmStructInit(&RTC_AlarmStructure);
/* EXTI configuration */
EXTI_ClearITPendingBit(EXTI_Line17);
EXTI_InitStructure.EXTI_Line = EXTI_Line17;
EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising;
EXTI_InitStructure.EXTI_LineCmd = ENABLE;
EXTI_Init(&EXTI_InitStructure);
/* Enable the RTC Alarm Interrupt */
NVIC_InitStructure.NVIC_IRQChannel = RTC_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
/* Set the alarmA Masks */
RTC_AlarmStructure.RTC_AlarmMask = RTC_AlarmMask_All;
RTC_SetAlarm(RTC_Format_BCD, RTC_Alarm_A, &RTC_AlarmStructure);
/* Set AlarmA subseconds and enable SubSec Alarm : generate 8 interripts per Second */
RTC_AlarmSubSecondConfig(RTC_Alarm_A, 0xFF, RTC_AlarmSubSecondMask_SS14_5);
/* Enable AlarmA interrupt */
RTC_ITConfig(RTC_IT_ALRA, ENABLE);
/* Enable the alarm A */
RTC_AlarmCmd(RTC_Alarm_A, ENABLE);
// /* Wait for RTC APB registers synchronisation */
RTC_WaitForSynchro();
/* Enable the RTC Clock */
RCC_RTCCLKCmd(ENABLE);
}
Regards,
#stop-work #lse-rtc #rtc
