I was getting crash message 2 - because of reset transient. I had manually wired GPIO16 to RST on ESP01 . It worked for some time fine and used to come out of deep sleep properly but then after a day or so started throwing the fatal exceptions. Not sure why but I will not try wiring up ESP 01 for deep sleep now, I will instead use ESP 12E for this use case.
I was getting crash message 2 - because of reset transient. I had manually wired GPIO16 to RST on ESP01 . It worked for some time fine and used to come out of deep sleep properly but then after a day or so started throwing the fatal exceptions. Not sure why but I will not try wiring up ESP 01 for deep sleep now, I will instead use ESP 12E for this use case.