rtic/book/en/src/by-example/new.md
2019-05-01 20:49:25 +02:00

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# Starting a new project
Now that you have learned about the main features of the RTFM framework you can
try it out on your hardware by following these instructions.
1. Instantiate the [`cortex-m-quickstart`] template.
[`cortex-m-quickstart`]: https://github.com/rust-embedded/cortex-m-quickstart#cortex-m-quickstart
``` console
$ # for example using `cargo-generate`
$ cargo generate \
--git https://github.com/rust-embedded/cortex-m-quickstart \
--name app
$ # follow the rest of the instructions
```
2. Add a peripheral access crate (PAC) that was generated using [`svd2rust`]
**v0.14.x**, or a board support crate that depends on one such PAC as a
dependency. Make sure that the `rt` feature of the crate is enabled.
[`svd2rust`]: https://crates.io/crates/svd2rust
In this example, I'll use the [`lm3s6965`] device crate. This device crate
doesn't have an `rt` Cargo feature; that feature is always enabled.
[`lm3s6965`]: https://crates.io/crates/lm3s6965
This device crate provides a linker script with the memory layout of the target
device so `memory.x` and `build.rs` need to be removed.
``` console
$ cargo add lm3s6965 --vers 0.1.3
$ rm memory.x build.rs
```
3. Add the `cortex-m-rtfm` crate as a dependency and, if you need it, enable the
`timer-queue` feature.
``` console
$ cargo add cortex-m-rtfm --allow-prerelease
```
4. Write your RTFM application.
Here I'll use the `init` example from the `cortex-m-rtfm` crate.
``` console
$ curl \
-L https://github.com/japaric/cortex-m-rtfm/raw/v0.5.0-alpha.1/examples/init.rs \
> src/main.rs
```
That example depends on the `panic-semihosting` crate:
``` console
$ cargo add panic-semihosting
```
5. Build it, flash it and run it.
``` console
$ # NOTE: I have uncommented the `runner` option in `.cargo/config`
$ cargo run
{{#include ../../../../ci/expected/init.run}}```