In the Particle reference Docs it is stäted that “If VBAT is floating when powering up for the first time, SRAM remains uninitialized. When using this feature for Backup RAM, it is recommended to have VBAT connected to a 3V3 or a known good power source on system first boot”.
What is meant with “first time” here?
Should I connect VBAT to 3v3 when I setup my Photon for the first time?
Or is it meant that I should connect to 3v3 when loading my application for the first time???
Furthermore: is it possible to use “retained Strings”? (somehow I thought to have read somewhere that this was ot possible, but I cannot find that part in the Reference Docs anymore)