Sensor Objects

This includes all the sensor objects including a few
implementations, including dbus and sysfs sensors.

Change-Id: I9897c79f9fd463f00f0e02aeb6c32ffa89635dbe
Signed-off-by: Patrick Venture <venture@google.com>
diff --git a/sysfs/sysfsread.cpp b/sysfs/sysfsread.cpp
new file mode 100644
index 0000000..284aa55
--- /dev/null
+++ b/sysfs/sysfsread.cpp
@@ -0,0 +1,39 @@
+/**
+ * Copyright 2017 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <chrono>
+#include <fstream>
+#include <iostream>
+
+#include "sysfs/sysfsread.hpp"
+
+
+ReadReturn SysFsRead::read(void)
+{
+    int64_t value;
+    std::ifstream ifs;
+
+    ifs.open(_path);
+    ifs >> value;
+    ifs.close();
+
+    struct ReadReturn r = {
+        static_cast<double>(value),
+        std::chrono::high_resolution_clock::now()
+    };
+
+    return r;
+}