Arduino for STM32

Hi,

I found the root cause.
In the constructor I had and old debug print statement to Serial1.

For completeness, I have options
- USB support : None
- U(S)ART : Enabled (generic Serial)

Small sketch to reproduce the issue

#include "Arduino.h"
#include "srcWrapper.h"

class CommandHandler ...

Yes, I can share but overall it is a complex one with combined esp/stm support.

Let me first try to make a minimal version of it by stripping and shortcutting.

Try to define global the CommandHandler* commandHandler;
then do the new in the setup().


Initializing it that way is working OK.

The library is my own, I am using it extensive in my esp8266 & esp32 projects without the limitation of only "new in setup".
No big constructor either.

Trying to ...

LS,

Is there a limitation on the usage of static/global objects ?

When instantiating a global object from my local library the board freezes (both stm32f103 & stm32f411)'

Minimal sketch :


#include "CommandProcessing.h"

CommandHandler* commandHandler = new CommandHandler; -> Fails ...

Yes, agree on the PA0, PB0 interrupts.

On the interrupt handlers for multiple lines I still have the question.

Within esp8266/esp32, the core handles splitting the one interrupt handler into multiple for the application.
It loops over the attached lines and calls the right callback.

Is that also ...

Hi,

I am new to STM32 but have experience with arduino framework in using esp8266 & esp32.
Using now a stm32f411ce

Question here is about interrupts/attachinterrupt.
I have read https://stm32f4-discovery.net/2014/08/stm32f4-external-interrupts-tutorial/

This states : 16 interrupt lines but only 7 ...