From accf9b02b756474fd7ea08c5d27384f382a93003 Mon Sep 17 00:00:00 2001
From: paul-loedige <paul@gve-loedige.de>
Date: Fri, 25 Dec 2020 14:18:21 +0100
Subject: [PATCH] changed the IIO

---
 .../com/example/aped/communication/IIO.java   | 19 +++++++++++++++----
 .../example/aped/communication/TestIO.java    |  6 +++---
 2 files changed, 18 insertions(+), 7 deletions(-)

diff --git a/APED/app/src/main/java/com/example/aped/communication/IIO.java b/APED/app/src/main/java/com/example/aped/communication/IIO.java
index 7b178a3..9c7f5b5 100644
--- a/APED/app/src/main/java/com/example/aped/communication/IIO.java
+++ b/APED/app/src/main/java/com/example/aped/communication/IIO.java
@@ -1,8 +1,19 @@
 package com.example.aped.communication;
 
-public interface IIO {
+public interface IIO
+{
+    /**
+     * reads a value from a device connected to the raspberry
+     * @param deviceName the name of the device to read from
+     * @return the value read
+     */
+    String read(String deviceName);
 
-    public Object read(String deviceName);
-
-    public Object write(String deviceName, Object value);
+    /**
+     * writes a value to a device connected to the raspberry
+     * @param deviceName the name of the device to write to
+     * @param value the value to write to the device
+     * @return the value written
+     */
+    String write(String deviceName, String value);
 }
diff --git a/APED/app/src/main/java/com/example/aped/communication/TestIO.java b/APED/app/src/main/java/com/example/aped/communication/TestIO.java
index 3ddfc0c..eb07aae 100644
--- a/APED/app/src/main/java/com/example/aped/communication/TestIO.java
+++ b/APED/app/src/main/java/com/example/aped/communication/TestIO.java
@@ -3,12 +3,12 @@ package com.example.aped.communication;
 public class TestIO implements IIO {
 
     @Override
-    public Object read(String deviceName) {
-        return new String("test");
+    public String read(String deviceName) {
+        return "test";
     }
 
     @Override
-    public Object write(String deviceName, Object value) {
+    public String write(String deviceName, String value) {
         return value;
     }
 }