Arduino for STM32

Thank you for your reply.
I started working on creating my own EEPROM library for the STM32F4 family. I took the library from Roger's for the STM32F1 family as a basis. Working with registers in this library is implemented in the files flash_stm32.h and flash_stm32.c . But the process was not as ...

Hi.
I am using the Roger's core in the Arduino IDE 2.0.3. Board type STM32F4VE.
I have a need to implement Flash based EEPROM in STM32F4 family controller. In Roger's core, this is implemented only for controllers of the STM32F1 family. For this, the corresponding EEPROM library has been created ...

I used this guide to installation.
I have downloaded this version of Roger's core:
Download a zip file containing the Arduino STM32 files from here .
Based on the link, this is an archived version of the Roger's Core.
There is already a mention of "-u _printf_float" in the platform.txt file from ...

Hi.
I got a problem while using the function sprintf(), when I was trying to output a float variable. The problem first appeared after using the dtostrf() function. If I add a float variable, I get an empty string as a result.
Variables of type int are fine. As soon as the identifier "f" or "lf ...