Update SerialId regex

Author: kostorr

include/ReadoutCard/ParameterTypes/SerialId.h

@@ -31,7 +31,7 @@ class SerialId
  public:
   /// Constructs a SerialId object using a string in the sssss[:e] format
   /// For example: "10241", "10241:1"
-  /// \param string String of format "^[ \t]*[0-9]{5}:?[0-1]?[ \t]*$"
+  /// \param string String of format "^[ \t]*([0-9]{3}|[0-9]{5}):?[0-1]?[ \t]*$"
   SerialId(const std::string& string);
 
   SerialId(int serial, int endpoint);

src/ParameterTypes/SerialId.cxx

@@ -27,7 +27,7 @@ namespace
 
 bool parseSerialIdString(const std::string string, int& serial, int& endpoint)
 {
-  std::regex expression("^[ \t]*[0-9]{5}:?[0-1]?[ \t]*$");
+  std::regex expression("^[ \t]*([0-9]{3}|[0-9]{5}):?[0-1]?[ \t]*$");
   if (std::regex_search(string, expression)) {
     serial = stoi(string.substr(0, string.find(':'))); // Will return the SerialId struct
     endpoint = stoi(string.substr(string.find(':') + 1));