Posted on November 24, 2014 at 13:35Hello.
I have a problem with set time. When I config time on program start, time is ok, but after, I can not set new time.
This is a code:
void RTC_Config(void)
{
RTC_InitTypeDef RTC_InitStructure;
RTC_TimeTypeDef RTC_TimeStructure;
RTC_DateTypeDef RTC_DateStructure;
/* Enable the PWR clock */
RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR, ENABLE);
/* Allow access to RTC */
PWR_BackupAccessCmd(ENABLE);
/* LSI used as RTC source clock */
/* The RTC Clock may varies due to LSI frequency dispersion. */
/* Enable the LSI OSC */
RCC_LSICmd(ENABLE);
/* Wait till LSI is ready */
while(RCC_GetFlagStatus(RCC_FLAG_LSIRDY) == RESET)
{
}
/* Select the RTC Clock Source */
RCC_RTCCLKConfig(RCC_RTCCLKSource_LSI);
/* Enable the RTC Clock */
RCC_RTCCLKCmd(ENABLE);
/* Wait for RTC APB registers synchronisation */
RTC_WaitForSynchro();
/* Calendar Configuration with LSI supposed at 32KHz */
RTC_InitStructure.RTC_AsynchPrediv = 0x7F;
RTC_InitStructure.RTC_SynchPrediv = 0xFF; /* (32KHz / 128) - 1 = 0xFF*/
RTC_InitStructure.RTC_HourFormat = RTC_HourFormat_24;
RTC_Init(&RTC_InitStructure);
RTC_TimeStructure.RTC_Seconds = 0;
RTC_TimeStructure.RTC_Minutes = 5;
RTC_TimeStructure.RTC_Hours = 14;
RTC_SetTime(RTC_Format_BIN, &RTC_TimeStructure);
RTC_DateStructure.RTC_Date = 19;
RTC_DateStructure.RTC_Month = 11;
RTC_DateStructure.RTC_WeekDay= RTC_Weekday_Wednesday;
RTC_DateStructure.RTC_Year = 14;
RTC_SetDate(RTC_Format_BIN, &RTC_DateStructure);
}
Code for new time:
RTC_TimeStructure.RTC_Seconds = 0;
RTC_TimeStructure.RTC_Minutes = 1;
RTC_TimeStructure.RTC_Hours = 11;
RTC_SetTime(RTC_Format_BIN, &RTC_TimeStructure);
RTC_DateStructure.RTC_Date = 11;
RTC_DateStructure.RTC_Month = 12;
RTC_DateStructure.RTC_WeekDay= RTC_Weekday_Wednesday;
RTC_DateStructure.RTC_Year = 12;
RTC_SetDate(RTC_Format_BIN, &RTC_DateStructure);
#lsi #date #rtc #time
