Diffrent between POR and NRST pin

[Barbie]

Posted on April 14, 2013 at 14:26

WHat is the different between making reset using POR (connecting VDD) and making reset on NRST pin at STM32F2xx?

I ask it because when I make POR my RTC IRQ not active but when I do NRST reset it does.

I have to mention that I use IAP from BOOT but in the BOOt section I don't active the RTC at all.

I make the vector rellocation as define in the APP 2557.

Bar.

#por-vs-nrst

[Tesla DeLorean]

Posted on April 14, 2013 at 16:29

Could you perhaps keep all your related questions in a single thread?

The boot to flash will always start from 0x08000000, how your RTC arrangement and configuration effects this I don't know, but when reset it shouldn't be performing any interrupts. RTC initialization code needs to check the type of reset, when exiting STANDBY you do not need to reconfigure the entire RTC/PWR device. NRST does NOT reset things in the backup power domain like it does with the core.

The state of the BOOTx pins should also be considered when exiting STANDBY.