Newbie question on startup/standalone operation

[TPLindley007]

I have some code I ported from the old boards and it runs fine when attached to the computer and with the serial interface open with a terminal. However, if I just plug the ESP32 into the computer or a battery, it will not run my program. When I enable the serial interface, it appears to reboot the ESP32 and the program works.

How do i get the ESP32 to load and run the program when power is applied, and I don't have anything defined on the serial interface?

Thanks in advance. (for help on what I think is a pretty basic question)

[TPLindley007]

Sorry, I meant to say this is on a NodeMCU environment, not a stand alone chip.

[Franco]

Please check "Note on C15" you will find scrolling down the documentation http://esp-idf.readthedocs.io/en/latest ... vkitc.html
-hope this helps-