Initial firmware commit.

firmware/common/message_queue.hpp

@@ -0,0 +1,51 @@
+/*
+ * Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
+ *
+ * This file is part of PortaPack.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifndef __MESSAGE_QUEUE_H__
+#define __MESSAGE_QUEUE_H__
+
+#include <cstdint>
+
+#include "message.hpp"
+#include "fifo.hpp"
+
+class MessageQueue {
+public:
+	bool push(Message* const message);
+
+	Message* pop();
+
+	size_t len() const {
+		return fifo.len();
+	}
+
+	bool is_empty() const {
+		return fifo.is_empty();
+	}
+
+private:
+	FIFO<Message*, 8> fifo;
+
+	bool enqueue(Message* const message);
+	void signal();
+};
+
+#endif/*__MESSAGE_QUEUE_H__*/