rtic/book/en/src/by-example/app.md

The #[app] attribute and an RTIC application

Requirements on the app attribute

All RTIC applications use the app attribute (#[app(..)]). This attribute only applies to a mod-item containing the RTIC application. The app attribute has a mandatory device argument that takes a path as a value. This must be a full path pointing to a peripheral access crate (PAC) generated using svd2rust v0.14.x or newer.

The app attribute will expand into a suitable entry point and thus replaces the use of the cortex_m_rt::entry attribute.

An RTIC application example

To give a flavour of RTIC, the following example contains commonly used features. In the following sections we will go through each feature in detail.

{{#include ../../../../examples/common.rs}}