Arduino for STM32

If you select the generic target, the default Serial pins are not PA9/PA10 but PA2/PA3:
https://github.com/stm32duino/Arduino_Core_STM32/blob/5a40f2d257379c4a6e1184b564c4f7d4fc43e7c6/variants/STM32F1xx/F103C8T_F103CB(T-U)/variant_generic.h#L140-L145

You can change it at sketch level using the setRx ...

FIXED IT!!!
Ok managed to get building and working on my IDE, the main issue is step 5 of the make a varient...
/* Memories definition */
MEMORY
{
- RAM (xrw) : ORIGIN = 0x20000000, LENGTH = 144K
- FLASH (rx) : ORIGIN = 0x8000000, LENGTH = 512K
+ RAM (xrw) : ORIGIN = 0x20000000, LENGTH = LD ...

If you used the generic and not a dedicated variant then you can use the build_opt.h or the hal_conf_extra.h

https://github.com/stm32duino/Arduino_Core_STM32/wiki/Customize-build-options-using-build_opt.h
https://github.com/stm32duino/Arduino_Core_STM32/wiki/HAL-configuration#customize-hal-or ...

Simply redefine it in your variant*.h file
Example for NUCLEO_F722ZE:
https://github.com/stm32duino/Arduino_C ... 2ZE.h#L224

Hi again new issue so new thread. we have USART3 on PC10/PC11 for debug output. But for some reason its outputting garbage.

I created a hello world in cubeIDE and it works fine there.
I am using the same clock config as cubeIDE so I know its not some strange clock sync issue.


Is it using HSE ...

Great. Could you share your code?
Here an example how to convert a cube example:
viewtopic.php?t=110

By default HSE_VALUE is 8MHz.
https://github.com/stm32duino/Arduino_C ... ault.h#L86

You have to define it to 25MHz.

About pin issue you probably made a mistake in your changes.

And use pin number PE14, PD13 and PD3 (no _) instead of pin name PE_14, PD_13 and PD_3.

PB5 has a timer:
https://github.com/stm32duino/Arduino_Core_STM32/blob/9154e6e0d3b9cbe8692692380517616fda6c5320/variants/STM32L0xx/L051T(6-8)Y/PeripheralPins.c#L89
But PB14 and PB2 do not have one.
So doing analogWrite(PB2, 255) is the same than doing digitalWrite(PB2, HIGH).
Try digitalWrite(PB5 ...

If you change in the sketch it is not in the scope of the Serial header to redefine it. Sketch is a cpp file.
Use the build_opt.h way as described here:
https://github.com/stm32duino/Arduino_C ... le-content