Hi,
On the reference manual of i.MX RT1170 there is the following section
25.3.4 Reset behavior of the Power-on Reset
The Power-on Reset (POR) will assert when the chip is powered ON or the POR_B pin is
active. The POR will reset all of the chip except the Secure Non-Volatile Storage (SNVS)
block
As far as I understand, on the cases of POR, toggling the POR_B pin reset, the IPP_RESET_B occurs.
Therefore, by checking only this value after some reset I can't distinguish between those possible cases.
I would like to know if there is any exists option to distinguish between those case that maybe I missed during reading the manual.
Putting this in another words- after a reset I would like to know if the reset cause was from power or because someone actively (using some api he has) toggeled the POR_B reset pin. Can I do that without preserving other flags? Currently my planned solution is to put some magic on the SNVS (which is not battery backed, so should be initialized on POR), and then to check it on reset (that has the ipp_reset_b event). If it is initialized to zero, then I know the reset was caused by a POR, if it has the magic value I deduce that only the POR_B reset pin was toggeled.
I wonder if that's a best practice.
Thank you in advance for any comment,
