Arduino for STM32

Maybe a cache issue linked to arduino IDE. I got several with new version 2.x


So, how do we slove this issue?
What is the correct way of using external interrupt through register manipulation?
And how to use the build_opt.h file correctly?
Do I create header file called "build_opt" because ...

EXTI4_IRQHandler is alread defined by the core interrupt part
https://github.com/stm32duino/Arduino_Core_STM32/blob/5a3f412d385c386eb421ede38c4223dbab5d83df/libraries/SrcWrapper/src/stm32/interrupt.cpp#L371

So if you want use it you have to disabled it by defining: HAL_EXTI_MODULE_DISABLED

https ...

dannyf wrote: Fri Mar 24, 2023 11:11 pm you need to unmask the line?

This line:does the unmasking.

Hi everyone,

I am using STM32F103C8 blue pill board with arduino ide - stm32duino official core.

I am trying to configure the external interrupt on pin PB4, according to the datasheet.
However, seems like i have missed something or it doesn't work at all.

This is the piece of code I am using for ...