Arduino for STM32

Solution was found here.

Thank! Indeed the file "build_opt.h" in the sketch directory with a string "-DUSE_FULL_LL_DRIVER" completely solved the problem.

I added the half_conf_extra.h file with the #define USE_FULL_LL_DRIVER to the project, but result is the same as with this define in main sketch.

compilation is fine but linker failed:

SineWaveGenerator2.ino.cpp:(.text.setup+0x12): undefined reference to `LL_RCC_GetSystemClocksFreq'
collect2 ...

I tried this already, but problem was not solved.
Compilator was ok, but linker failed with error:

undefined reference to `LL_RCC_GetSystemClocksFreq'

BTW - what is the meanings of USE_FULL_LL_DRIVER config?

Hello i am trying to set the bluepill clock and then check.
Here is the whole program (it is a skeleton for I2C-DMA transfer):
#include "stm32f1xx.h"
#include "stm32f1xx_ll_bus.h"
#include "stm32f1xx_ll_gpio.h"
#include "stm32f1xx_ll_utils.h"
#include "stm32f1xx_ll_rcc.h"
#include "stm32f1xx_ll ...

Hello friends,

can someone to help me with configuration of DMA and I2C?

I would like to send the data from blue pill (STM32F103) to the external DAC with I2C interface. I am trying to generate sine wave. Data of one sine period are stored in the array - 512 values. I would like to use it as a ...