prepare HAL patch and embassy release

va416xx-hal/src/lib.rs

@@ -1,20 +1,23 @@
 //! This is the **H**ardware **A**bstraction **L**ayer (HAL) for the VA416xx MCU family.
 //!
 //! It is an additional hardware abstraction on top of the [peripheral access API](https://egit.irs.uni-stuttgart.de/rust/va416xx-rs/src/branch/main/va416xx).
-
+//!
 //! It is the result of reading the datasheet for the device and encoding a type-safe layer over the
 //! raw PAC. This crate also implements traits specified by the
 //! [embedded-hal](https://github.com/rust-embedded/embedded-hal) project, making it compatible with
 //! various drivers in the embedded rust ecosystem.
-
-//! You have to enable one of the following device features to use this crate depending on
-//! which chip you are using:
-
+//!
+//! It is generally advised to enable ONE of the following device features to use this crate
+//! depending on which chip you are using:
+//!
 //! - `va41630`
 //! - `va41629`
 //! - `va41628`
 //! - `va41620`
 //!
+//! If no option is specified, only access to APIs which are common for all families or
+//! which are not disabled for specific families is granted.
+//!
 //! When using this HAL and writing applications for the VA416xx family in general, it is strongly
 //! recommended that you set up the clock properly, because the default internal HBO clock
 //! is not very accurate. You can use the [crate::clock] module for this. If you are working
@@ -26,15 +29,6 @@
 #[cfg(test)]
 extern crate std;
 
-#[cfg(not(feature = "device-selected"))]
-compile_error!(
-    "This crate requires one of the following device features enabled:
-        va41630
-        va41629
-        va41628
-"
-);
-
 use gpio::Port;
 pub use va416xx as device;
 pub use va416xx as pac;