1 #include "util.hpp"
2 
3 #include <cmath>
4 #include <iostream>
5 #include <set>
6 #include <variant>
7 
8 using Property = std::string;
9 using Value = std::variant<int64_t, double, std::string, bool>;
10 using PropertyMap = std::map<Property, Value>;
11 
12 namespace pid_control
13 {
14 
15 std::string getSensorPath(const std::string& type, const std::string& id)
16 {
17     std::string layer = type;
18     if (type == "fan")
19     {
20         layer = "fan_tach";
21     }
22     else if (type == "temp")
23     {
24         layer = "temperature";
25     }
26     else
27     {
28         layer = "unknown"; // TODO(venture): Need to handle.
29     }
30 
31     return std::string("/xyz/openbmc_project/sensors/" + layer + "/" + id);
32 }
33 
34 std::string getMatch(const std::string& type, const std::string& id)
35 {
36     return std::string("type='signal',"
37                        "interface='org.freedesktop.DBus.Properties',"
38                        "member='PropertiesChanged',"
39                        "path='" +
40                        getSensorPath(type, id) + "'");
41 }
42 
43 bool validType(const std::string& type)
44 {
45     static std::set<std::string> valid = {"fan", "temp"};
46     return (valid.find(type) != valid.end());
47 }
48 
49 void scaleSensorReading(const double min, const double max, double& value)
50 {
51     if (max <= 0 || max <= min)
52     {
53         return;
54     }
55     value -= min;
56     value /= (max - min);
57 }
58 
59 } // namespace pid_control
60