OTA Updates undefined reference to `app

Q&A Forum › Category: ESP32 › OTA Updates undefined reference to `app_main'

Hi,
About the course
https://randomnerdtutorials.com/esp32-over-the-air-ota-programming/

When I compile, I have a undefined reference to `app_mai n’

I don’t believe it , this occurs when there is a problem with the code.
One time there was a useless H file in a folder and I got that complain. I compiled many ‘certifiedbyme’ codes and everything is OK.

Did you have any complain about that?

Regards,

JPD

4 Answers

0 Vote Up Vote Down

Jean Pierre Daviau answered 2 years ago

Solved
10uF between EN pin and ground.

0 Vote Up Vote Down

Jean Pierre Daviau answered 2 years ago

Hi,

Is there a minimal sketch to upload a squech with OTA?

Regards,

JPD

1 Vote Up Vote Down

Sara Santos Staff answered 2 years ago

Hi.
I’m sorry for the delay in my response.
That code compiled ok for me.
The only example we have about OTA is precisely that one: https://randomnerdtutorials.com/esp32-over-the-air-ota-programming/
Regards,
Sara

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Jean Pierre Daviau answered 2 years ago

Thank you, I found my mistake.