diff --git a/src/lib.rs b/src/lib.rs
index fd0cea6..94798c7 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,11 +1,14 @@
-use embedded_hal::i2c::I2c;
+use std::convert::Infallible;
+
+use embedded_hal::i2c::{I2c, SevenBitAddress};
+use embedded_io::{ErrorType, Read};
 
 const DEVICE_ADDRESS: u8 = 0b10100000;
 const DEVICE_ADDRESS_CODE: u8 = 0b00000000;
 const DEVICE_W: u8 = 0b00000000;
 const DEVICE_R: u8 = 0b00000001;
 
-struct MB85RC<T: I2c> {
+struct MB85RC<T: I2c<SevenBitAddress>> {
     i2c: T,
 }
 
@@ -14,3 +17,13 @@ impl<T: I2c> MB85RC<T> {
         MB85RC { i2c }
     }
 }
+
+impl<T: I2c> ErrorType for MB85RC<T> {
+    type Error = Infallible;
+}
+
+impl<T: I2c> Read for MB85RC<T> {
+    fn read(&mut self, buf: &mut [u8]) -> Result<usize, Self::Error> {
+        todo!()
+    }
+}