Question
RTC not interrupting every seconds
Posted on October 16, 2017 at 15:52
Hi
I was running RTC with stm32f I use cmsis and using LSE(768 khz) for rtc.
I want to trig the RTC_IRQ on each second. How can I active it ? Its my code for adjusting rtc
static void RTC_Config(void) { RTC_TimeTypeDef RTC_TimeStruct; RTC_InitTypeDef RTC_InitStructure; 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); /* 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); /////////////////////////////////////////////////////////////////////////////////////////////////////// /* Enable AlarmA interrupt */ RTC_ITConfig(RTC_IT_TS, ENABLE); /* 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); RCC_RTCCLKCmd(ENABLE); // Enable RTC RTC_WaitForSynchro(); }�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?�?Regards
hamed
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