Posted on December 12, 2017 at 04:06 RTC->WPR = 0xCA;
RTC->WPR = 0x53;
RTC->CR &= ((uint32_t)~(RTC_CR_TSE | RTC_CR_REFCKON | RTC_CR_BYPSHAD |
RTC_CR_ALRBIE | RTC_CR_ALRAIE | RTC_CR_ALRBE |
RTC_CR_ALRAE | RTC_CR_WUCKSEL | RTC_CR_TSEDGE));
RTC->ISR &= (uint32_t)~(RTC_ISR_TSF | RTC_ISR_TSOVF);
RTC->WPR = 0xFF;
RTCCR: 0x0000001000000000000000000000000000010000 REFCKON
RTCISR: 0x0000003700000000000000000000000000110111 RSF INITS WUTWF ALRBWF ALRAWF
turns into
RTCCR: 0x00003B3F00000000000000000011101100111111 ALRBIE ALRAIE TSE ALRBE ALRAE BYPSHAD REFCKON TSEDGE WUCKSEL
RTCISR: 0x0000181700000000000000000001100000010111 TSOVF TSF INITS WUTWF ALRBWF ALRAWF
when I call HAL_RTC_SetTime(). it clobbers my settings every time I do a time adjustment. is there a valid reason for doing that? I haven't found anything in the documentation that suggests it is necessary.
