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stm32f429 register value edit

Question asked by eb3484 on Dec 11, 2016
Latest reply on Dec 12, 2016 by eb3484


I want to change the RTC->ISR register value but i could not change it (RTC->ISR = 0xFFFFFFFF etc...). Besides i can change TIM4->CCR1 value. Why rtc register value can not be chaged? Any advise??