Add basics for a POCSAG Cal mode

CalPOCSAG.h

@@ -0,0 +1,44 @@
+/*
+ *   Copyright (C) 2019 by Florian Wolters DF2ET
+ *
+ *   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 of the License, 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; if not, write to the Free Software
+ *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#if !defined(CALPOCSAG_H)
+#define  CALPOCSAG_H
+
+#include "Config.h"
+
+enum POCSAGCAL {
+  POCSAGCAL_IDLE,
+  POCSAGCAL_TX
+};
+
+class CCalPOCSAG {
+public:
+  CCalPOCSAG();
+
+  void process();
+
+  uint8_t write(const uint8_t* data, uint8_t length);
+
+private:
+  bool      m_transmit;
+  POCSAGCAL m_state;
+  uint8_t   m_audioSeq;
+};
+
+#endif
+