# Summary

- [Introduction](./introduction.md)
- [The Peripheral Access Crate](./the_pac.md)
- [The Hardware Abstraction Layer](./the_hal.md)
- [Building Common Abstractions](./building_common_abstractions.md)
- [Supporting your particular board](./supporting_your_particular_board.md)
- [Writing an Application](./writing_an_application.md)