initial

1 files changed, 69 insertions, 0 deletions

diff --git a/src/joystick.cpp b/src/joystick.cpp
new file mode 100644
index 0000000..1b40650
--- /dev/null
+++ b/src/joystick.cpp
@@ -0,0 +1,69 @@
+// 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.
+//
+// Copyright Drew Noakes 2013-2016
+
+#include "joystick.hpp"
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <iostream>
+#include <string>
+#include <sstream>
+#include "unistd.h"
+
+
+
+void Joystick::init(int joystickNumber) {
+	std::stringstream sstm;
+	sstm << "/dev/input/js" << joystickNumber;
+	openPath(sstm.str(), false);
+}
+
+void Joystick::openPath(std::string devicePath, bool blocking)
+{
+  // Open the device using either blocking or non-blocking
+  _fd = open(devicePath.c_str(), blocking ? O_RDONLY : O_RDONLY | O_NONBLOCK);
+}
+
+bool Joystick::sample(JoystickEvent* event)
+{
+  int bytes = read(_fd, event, sizeof(*event)); 
+
+  if (bytes == -1)
+    return false;
+
+  // NOTE if this condition is not met, we're probably out of sync and this
+  // Joystick instance is likely unusable
+  return bytes == sizeof(*event);
+}
+
+bool Joystick::isFound()
+{
+  return _fd >= 0;
+}
+
+Joystick::~Joystick()
+{
+  close(_fd);
+}
+
+std::ostream& operator<<(std::ostream& os, const JoystickEvent& e)
+{
+  os << "type=" << static_cast<int>(e.type)
+     << " number=" << static_cast<int>(e.number)
+     << " value=" << static_cast<int>(e.value);
+  return os;
+}
+
+