Code won't run without pressing reset button

[IPrin.1]

My code runs without issue when the STM Nucleo is connected to the laptop, but if I try to run it without connection to PC, I have to press the reset button before the code will run.

I am using STM32CubeIDE and cannot find a solution relevant to that environment.

I can of course create a hardware solution to this but I would rather achieve a solution programmatically if possible.

[waclawek.jan]

> Adding a short delay at the start of main() has fixed the startup issue

How?

JW

[SAlvi.1]

Please, explain your solution, did you use HAL_Delay(), a for() ?, where exactly did you put it?, at the very beginning of main()? After HAL_Init()? At the startup file? . Please I'm having the same issue with 3 Nucleo 144 STM32F446ZE. Thank you for your time.

[Tesla DeLorean]

Suggest at the VERY BEGINNING, with simple delay

volatile int i = 100000000;

while(i--);

Not clear what or how this worked, the OP lacked specifics. So perhaps TRY some things, and see if you have the same problem or a different one.

[Piranha]

Answers are in my post in there:

https://community.st.com/s/question/0D53W00001t46n6SAA/stm32f767zi-on-external-power-supply-is-stuck-until-reset-button-is-pressed