In general, downloaded keil does not have STM32 chip, new projects do not have the option of stm32, automatic updates are too slow and there are too many unnecessary things. No corresponding resources were found from the official website update. For a long time, you can download the resources manually from here, run the automatic import directly. When you create a new project, the drop-down box chooses to call the additional library.

Filename	Size	Update
Keil.STM32F1xx_DFP.2.3.0.pack	50166382	2018-12-19

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