use #[no_main] and the entry! macro to specify the main function

[danc86]

Matches cortex-m-rt. See:

rust-embedded/cortex-m-rt#69
rust-embedded/cortex-m-rt#78

[danc86]

This is backwards incompatible for crates which are using riscv-rt (indirectly). I guess we would want to bump the version to 0.2.0.

I will fix up the riscv-rust-quickstart crate soon, I have got a bunch of fixes queued up for it which I am working through.

Also unfortunately it means that the program crates have to depend directly on this crate now, to get the macro. But... 🤷

[dvc94ch]

LGTM!

Also unfortunately it means that the program crates have to depend directly on this crate now, to get the macro. But... 🤷

Have you tried #![feature(rust_2018_preview)] instead of #[macro_use(entry)] extern crate riscv-rt? [0]

• [0] https://rust-lang-nursery.github.io/edition-guide/2018/transitioning/modules/macros.html

[danc86]

Oooh interesting. I will take a look.

[dvc94ch]

@danc86 is this ok to merge?

[danc86]

Yep this one is good to go as is. We can always tweak the example to use the rust_2018_preview stuff later on.