cfg_reg: add getter function

src/config_register.rs

@@ -88,7 +88,7 @@ where
 			((self.data & 0x0000FF00) >>  8) as u8,
 			((self.data & 0x000000FF) >>  0) as u8,
 		]).map_err(Error::SPI) {
-			Ok(arr) => Ok(((arr[0] as u32) << 16) | ((arr[1] as u32) << 8) | arr[2] as u32),
+			Ok(arr) => Ok(self.data),
 			Err(e) => Err(e),
 		}
 	}
@@ -106,6 +106,10 @@ where
 		// Write all configurations at the same time
 		self.set_all_configurations()
 	}
+
+	pub fn get_configuration(&mut self, config_type: CFGMask) -> u8 {
+		((self.data & config_type.get_bitmask()) >> config_type.get_shift()) as u8
+	}
 }
 
 impl<SPI, E> Transfer<u8> for ConfigRegister<SPI>