I believe I am doing something wrong. I read that to re-write to the RTC I will need to:
1. Write ‘0xCA’ into the RTC_WPR register.
2. Write ‘0x53’ into the RTC_WPR register
I found a function in the RTC file that is:
#define __HAL_RTC_WRITEPROTECTION_DISABLE(__HANDLE__) \
do{ \
(__HANDLE__)->Instance->WPR = 0xCAU; \
(__HANDLE__)->Instance->WPR = 0x53U; \
} while(0U)
So I called that function like so:
__HAL_RTC_WRITEPROTECTION_DISABLE(&hrtc);
RTC_TimeTypeDef sTime = {0};
RTC_DateTypeDef sDate = {0};
sTime.Hours = hour;
sTime.Minutes = minute;
sTime.Seconds = 0x0;
sTime.DayLightSaving = RTC_DAYLIGHTSAVING_NONE;
sTime.StoreOperation = RTC_STOREOPERATION_RESET;
HAL_RTCEx_BKUPWrite(&hrtc, RTC_BKP_DR1, 0x32F2);
__HAL_RTC_WRITEPROTECTION_ENABLE(&hrtc);
And it simply does not work. Obviously I am doing something wrong, but I am not experienced enough to know where my error lies.
Help would be appreciated thank you.
