AnsweredAssumed Answered

STM32F405, rtc issue

Question asked by Angelo Dureghello on Sep 13, 2014
Latest reply on Sep 15, 2014 by Clive One
Dear all,

i connected a 32.768Khz quartz to the external clock source (PC14, PC15), i would like to have an interrupt generated each second, for the system clock. Also, i connected a battery between VBAT and gnd, to maintain time over power off.

So for this purpose, i tried several samples found here and there, no one seems to work.

I suspect some hardware trouble on my board, anyway, i am not sure of the samples i am looking at, could anyone suggest me a sure tutorial / appnote / link for this purpose so i am sure about the software steps ?

Many thanks