STM32F429 does not start without debug probe

[JulienD]

Hello

My app does not start without the debug probe.

I replaced source code (app with freertos) by a simple blinking led, and it starts without

the debug probe (segger j-trace)...

Any idea?

Edit;

Moving around a blinking led in the code, it appears that calling HAL_I2C_Master_Transmit to talk to an IO Explander

fails without the debug probe causing an assert causing the program to stop.

Thanks

Julien

[Tesla DeLorean]

Make sure BOOT0 is pulled to Ground

[JulienD]

It is.

[JulienD]

OK, I replaced source code (app with freeRTOS) with a simple blinking led and in fact, it works. The issue is not on (only?) on the a hardware.