RTC_AF1 on Nucle-F410

[mmsya]

Is RTC_AF1  the same as ck_spre? How can I view it on PC13 If I am using the Nucleo-F410 please?

[waclawek.jan]

By setting RTC_CR.COE and RTC_CR.COSEL. Read Calibration clock output subchapter of RTC chapter (and also RTC register write protection subchapter).

JW