1 /**
2  * Copyright 2017 Google Inc.
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *     http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 #include "sysfs/sysfsread.hpp"
18 
19 #include <chrono>
20 #include <fstream>
21 #include <iostream>
22 
23 namespace pid_control
24 {
25 
26 ReadReturn SysFsRead::read(void)
27 {
28     int64_t value;
29     std::ifstream ifs;
30 
31     ifs.open(_path);
32     ifs >> value;
33     ifs.close();
34 
35     ReadReturn r = {static_cast<double>(value),
36                     std::chrono::high_resolution_clock::now()};
37 
38     return r;
39 }
40 
41 } // namespace pid_control
42