diff --git a/tm4c-hal/src/i2c.rs b/tm4c-hal/src/i2c.rs
index adf1605..71cd33b 100644
--- a/tm4c-hal/src/i2c.rs
+++ b/tm4c-hal/src/i2c.rs
@@ -25,17 +25,19 @@ pub enum Error {
 #[macro_export]
 /// Implements the traits for an I2C peripheral
 macro_rules! i2c_pins {
-    ($UARTn:ident,
+    ($I2Cn:ident,
         scl: [$(($($sclgpio: ident)::*, $sclaf: ident)),*],
         sda: [$(($($sdagpio: ident)::*, $sdaaf: ident)),*],
     ) => {
         $(
-            unsafe impl SclPin<$UARTn> for $($sclgpio)::*<AlternateFunction<$sclaf, OpenDrain<Floating>>>
+            unsafe impl<T> SclPin<$I2Cn> for $($sclgpio)::*<AlternateFunction<$sclaf, T>>
+            where
+                T: OutputMode,
             {}
         )*
 
         $(
-            unsafe impl<T> SdaPin<$UARTn> for $($sdagpio)::*<AlternateFunction<$sdaaf, T>>
+            unsafe impl<T> SdaPin<$I2Cn> for $($sdagpio)::*<AlternateFunction<$sdaaf, T>>
             where
                 T: OutputMode,
             {}
diff --git a/tm4c123x-hal/src/lib.rs b/tm4c123x-hal/src/lib.rs
index 8260200..3772060 100644
--- a/tm4c123x-hal/src/lib.rs
+++ b/tm4c123x-hal/src/lib.rs
@@ -26,6 +26,10 @@
 pub use tm4c123x::{self, CorePeripherals, Peripherals};
 pub use tm4c_hal::{bb, delay, time};
 
+// Enable use of interrupt macro
+#[cfg(feature = "rt")]
+pub use crate::tm4c123x::interrupt;
+
 use embedded_hal as hal;
 
 pub mod gpio;
diff --git a/tm4c129x-hal/src/lib.rs b/tm4c129x-hal/src/lib.rs
index f887b6a..618752c 100644
--- a/tm4c129x-hal/src/lib.rs
+++ b/tm4c129x-hal/src/lib.rs
@@ -28,6 +28,10 @@
 pub use tm4c129x::{self, CorePeripherals, Peripherals};
 pub use tm4c_hal::{bb, delay, time};
 
+// Enable use of interrupt macro
+#[cfg(feature = "rt")]
+pub use crate::tm4c129x::interrupt;
+
 pub mod gpio;
 pub mod i2c;
 pub mod prelude;