Release a new version

[jannic]

There has not been a new release of rp2040-hal for several months. During that time, the crate improved significantly.
With a new release (0.3.0?), it would be much easier for newcomers to find those improvements.

As rp2040-hal depends on pio, which was not yet released to crates.io, there are a few steps to be taken:

• publish pio to crates.io
• update rp-hal/rp2040-hal to depend on the released version of pio
• publish updated version of rp2040-hal
• Update changelog before tagging the release

[9names]

One more task so I don't forget:

• Update changelog before tagging the release

[thejpster]

embassy-rs is blocking us doing a release, because rp-hal git depends on embassy-traits.

$ cargo publish --dry-run
    Updating crates.io index
error: all dependencies must have a version specified when publishing.
dependency `embassy-traits` does not specify a version
Note: The published dependency will use the version from crates.io,
the `git` specification will be removed from the dependency declaration.

[thejpster]

Asked about it in embassy-rs/embassy#549

[jannic]

As long as embassy-traits is not released to crates.io, it wouldn't be a huge loss to disable embassy-traits support in the published rp-hal as well.
(It's not necessary to remove the code. Commenting out the dependency and the feature in Cargo.toml seems to be sufficient.)

diff --git a/rp2040-hal/Cargo.toml b/rp2040-hal/Cargo.toml
index fdb766d..2abbf99 100644
--- a/rp2040-hal/Cargo.toml
+++ b/rp2040-hal/Cargo.toml
@@ -30,11 +30,11 @@ chrono = { version = "0.4", default-features = false, optional = true }
 
 # namespaced features will let use use "dep:embassy-traits" in the features rather than using this
 # trick of renaming the crate.
-[dependencies.embassy_traits]
-git = "https://github.com/embassy-rs/embassy"
-rev = "6d6e6f55b8a9ecd38b5a6d3bb11f74b2654afdeb"
-package = "embassy-traits"
-optional = true
+#[dependencies.embassy_traits]
+#git = "https://github.com/embassy-rs/embassy"
+#rev = "6d6e6f55b8a9ecd38b5a6d3bb11f74b2654afdeb"
+#package = "embassy-traits"
+#optional = true
 
 [dev-dependencies]
 cortex-m-rt = "0.7"
@@ -45,5 +45,5 @@ pio-proc = "0.1.0"
 
 [features]
 rt = ["rp2040-pac/rt"]
-embassy-traits = ["embassy_traits", "futures"]
+#embassy-traits = ["embassy_traits", "futures"]
 alloc = []

[thejpster]

Doesn't it complain that embassy-traits isn't a feature any more?

[thejpster]

Apparently not...

[thejpster]

#242

[thejpster]

Done!