> For the complete documentation index, see [llms.txt](https://tk233.gitbook.io/notes/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://tk233.gitbook.io/notes/stm32/system-core.md).

# System Core

- [Using GPIO on STM32](https://tk233.gitbook.io/notes/stm32/system-core/gpio.md)
- [Setting up External Interrupt on STM32](https://tk233.gitbook.io/notes/stm32/system-core/external-interrupt.md)