eh: update set_config and add get_config

1 files changed, 13 insertions, 1 deletions

diff --git a/embassy-embedded-hal/src/lib.rs b/embassy-embedded-hal/src/lib.rs
index 3aad838bd..8872b3d61 100644
--- a/embassy-embedded-hal/src/lib.rs
+++ b/embassy-embedded-hal/src/lib.rs
@@ -26,6 +26,18 @@ pub trait SetConfig {
     /// The configuration type used by this driver.
     type Config;
 
+    /// The error type that can occur if `set_config` fails.
+    type ConfigError;
+
     /// Set the configuration of the driver.
-    fn set_config(&mut self, config: &Self::Config);
+    fn set_config(&mut self, config: &Self::Config) -> Result<(), Self::ConfigError>;
+}
+
+/// Get the configuration of a peripheral driver.
+pub trait GetConfig {
+    /// The configuration type used by this driver.
+    type Config;
+
+    /// Get the configuration of the driver.
+    fn get_config(&self) -> Self::Config;
 }