Typical LSI on the Blue Pill (F103xy) should be 40000

[edogaldo]

Arduino_Core_STM32/variants/BLUEPILL_F103C8/stm32f1xx_hal_conf.h

Line 117 in 3860563

#define LSI_VALUE 32000U /*!< LSI Typical Value in Hz */

[fpistm]

Hi @edogaldo
Right,
https://www.st.com/resource/en/datasheet/stm32f103c8.pdf

I will update it. and check sysclock config
Edit:
TBC check other F1 variant. Mapple, Nucleo F103RB, disco F100