1 files changed, 63 insertions, 0 deletions
diff --git a/gnuradio-core/src/lib/io/ppio.h b/gnuradio-core/src/lib/io/ppio.h
new file mode 100644
index 000000000..d99f7bf79
--- /dev/null
+++ b/gnuradio-core/src/lib/io/ppio.h
@@ -0,0 +1,63 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2001,2003 Free Software Foundation, Inc.
+ *
+ * This file is part of GNU Radio
+ *
+ * GNU Radio 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 3, or (at your option)
+ * any later version.
+ *
+ * GNU Radio 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 GNU Radio; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifndef INCLUDED_PPIO_H
+#define INCLUDED_PPIO_H
+
+#include <gr_core_api.h>
+#include <boost/shared_ptr.hpp>
+
+class ppio;
+typedef boost::shared_ptr<ppio> ppio_sptr;
+
+
+/*!
+ * \brief abstract class that provides low level access to parallel port bits
+ * \ingroup hardware
+ */
+
+class GR_CORE_API ppio {
+ public:
+  ppio () {}
+  virtual ~ppio ();
+
+  virtual void write_data (unsigned char v) = 0;
+  virtual unsigned char read_data () = 0;
+  virtual void write_control (unsigned char v) = 0;
+  virtual unsigned char read_control () = 0;
+  virtual unsigned char read_status () = 0;
+
+  virtual void lock () = 0;
+  virtual void unlock () = 0;
+};
+
+/*!
+ * \brief Factory method.
+ *
+ * Split out from class to make life easier for SWIG
+ */
+
+GR_CORE_API ppio_sptr make_ppio (int which_pp);
+
+
+#endif /* INCLUDED_PPIO_H */
+