Merge pull request #2 from w3irdrobot/core-error

impl core::error::Error under a feature

Author: w3irdrobot

Cargo.toml

@@ -20,6 +20,7 @@ maybe-async-cfg = "0.2"
 
 [features]
 async = ["dep:embedded-hal-async"]
+core-error = []                    # bump MSRV to 1.81.0
 default = ["sync"]
 defmt-03 = ["dep:defmt"]
 not-recommended-rfs = []

src/error.rs

@@ -16,3 +16,13 @@ pub enum Error<E> {
     /// Try to set a Current value without giving the Rfs value
     UnknownRfs,
 }
+
+#[cfg(feature = "core-error")]
+impl<E: core::fmt::Debug> core::error::Error for Error<E> {}
+
+#[cfg(feature = "core-error")]
+impl<E: core::fmt::Debug> core::fmt::Display for Error<E> {
+    fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
+        write!(f, "{self:?}")
+    }
+}