Question
RTC
Posted on July 21, 2015 at 21:18
Hi,
I am using Cube MX to generate the RTC code.It is working perfectly fine, the time is counted correctly. But every time I turn off the device, the time and date are set back to 0.I found the problem in the Init function. Every time the RTC is initialized, the time and date are set to zero again.I solved the problem just by commenting those lines, but I am wondering why cube generates such code! Once that the code is not supposed to be edited, every time I generate a new version I must remember to go there and comment those lines. It is weird. Am I doing something wrong?/* RTC init function */void MX_RTC_Init(void){ RTC_TimeTypeDef sTime; RTC_DateTypeDef sDate; RTC_AlarmTypeDef sAlarm; /**Initialize RTC and set the Time and Date */ hrtc.Instance = RTC; hrtc.Init.HourFormat = RTC_HOURFORMAT_24; hrtc.Init.AsynchPrediv = 127; hrtc.Init.SynchPrediv = 255; hrtc.Init.OutPut = RTC_OUTPUT_DISABLE; hrtc.Init.OutPutPolarity = RTC_OUTPUT_POLARITY_HIGH; hrtc.Init.OutPutType = RTC_OUTPUT_TYPE_OPENDRAIN; HAL_RTC_Init(&hrtc); // Manually commented //sTime.Hours = 0; //sTime.Minutes = 0; //sTime.Seconds = 0; //sTime.SubSeconds = 0; sTime.TimeFormat = RTC_HOURFORMAT12_AM; sTime.DayLightSaving = RTC_DAYLIGHTSAVING_NONE; sTime.StoreOperation = RTC_STOREOPERATION_RESET; HAL_RTC_SetTime(&hrtc, &sTime, FORMAT_BCD); // Manually commented //sDate.WeekDay = RTC_WEEKDAY_MONDAY; //sDate.Month = RTC_MONTH_JANUARY; //sDate.Date = 1; //sDate.Year = 0; HAL_RTC_SetDate(&hrtc, &sDate, FORMAT_BCD); /**Enable the Alarm A */ sAlarm.AlarmTime.Hours = 0; sAlarm.AlarmTime.Minutes = 0; sAlarm.AlarmTime.Seconds = 0; sAlarm.AlarmTime.SubSeconds = 0; sAlarm.AlarmTime.TimeFormat = RTC_HOURFORMAT12_AM; sAlarm.AlarmTime.DayLightSaving = RTC_DAYLIGHTSAVING_NONE; sAlarm.AlarmTime.StoreOperation = RTC_STOREOPERATION_RESET; sAlarm.AlarmMask = RTC_ALARMMASK_NONE; sAlarm.AlarmSubSecondMask = RTC_ALARMSUBSECONDMASK_ALL; sAlarm.AlarmDateWeekDaySel = RTC_ALARMDATEWEEKDAYSEL_DATE; sAlarm.AlarmDateWeekDay = 1; sAlarm.Alarm = RTC_ALARM_A; HAL_RTC_SetAlarm(&hrtc, &sAlarm, FORMAT_BCD);}