Application not starting correct after UART bootloader

[AWack]

Hi,

I´ve a application (with RTOS) where I do a FW update via the internal UART bootloader (BOOT0 pin method).

After flashing is finished I set the Boot0 to GND and toggle the reset pin. The application starts, but I don´t get USART interrupts any more.

After Power cycle interrupts are working again.

Any idea?

Best regards,

Achim

[mƎALLEm]

Hello,

Are you sure the UART interrupts are enabled in your application?

If you upload the application with ST link, do you have the same behavior?

[Tesla DeLorean]

Double check the NVIC and SystemInit() configuration of SCB->VTOR

Check the USART isn't flagging any other errors/status

Use USART in polling mode to output diagnostic/telemetry data, perhaps dumping RCC, USART, NVIC etc so you can note differences between cases.

Instrument Error_Handler / HardFault_Handler in case it ends up in either of those.