Solved
Where is stsw-stm32054?
STM32F1x Standard Peripheral Library part number stsw-stm32054 does not appear.
This library was released as V3.6.0 on November 05, 2021.
I downloaded this library.
However, it is currently unavailable. It seems that you can download the library from the Japanese website.
Where can I get the library from the "st.com" homepage?
