# `stm32f103xx` > Peripheral access API for STM32F103XX microcontrollers You may also be interested in the [`stm32f103xx-hal` crate](https://github.com/japaric/stm32f103xx-hal), which re-exports this crate and adds [`embedded-hal` support](https://crates.io/crates/embedded-hal). # [Documentation](https://docs.rs/stm32f103xx) # License Licensed under either of - Apache License, Version 2.0 ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0) - MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT) at your option. ## Contribution Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.