Fan and TachSensor class introduction

A Fan object has one or more TachSensor objects.

The TachSensor class is used to keep track of the
the actual and expected speeds.  It only tracks
expected speeds if the _hasTarget attribute is true.

Future commits will add more functionality.

Change-Id: I9bb5fac39f25c5c31c18457ebedf82838fcf6641
Signed-off-by: Matt Spinler <spinler@us.ibm.com>

1 files changed, 49 insertions, 0 deletions

diff --git a/monitor/tach_sensor.cpp b/monitor/tach_sensor.cpp
new file mode 100644
index 0000000..3264ddf
--- /dev/null
+++ b/monitor/tach_sensor.cpp
@@ -0,0 +1,49 @@
+/**
+ * Copyright © 2017 IBM Corporation
+ *
+ * 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 <phosphor-logging/log.hpp>
+#include "fan.hpp"
+#include "tach_sensor.hpp"
+#include "../utility.hpp"
+
+namespace phosphor
+{
+namespace fan
+{
+namespace monitor
+{
+
+constexpr auto FAN_SENSOR_PATH = "/xyz/openbmc_project/sensors/fan_tach/";
+
+
+TachSensor::TachSensor(sdbusplus::bus::bus& bus,
+                       Fan& fan,
+                       const std::string& id,
+                       bool hasTarget,
+                       size_t timeout) :
+
+    _bus(bus),
+    _fan(fan),
+    _name(FAN_SENSOR_PATH + id),
+    _hasTarget(hasTarget),
+    _timeout(timeout)
+{
+    //TODO
+}
+
+
+}
+}
+}