HD44780.h

/*
 *   Copyright (C) 2016 by Jonathan Naylor G4KLX
 *
 *   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(HD44780_H)
#define	HD44780_H

#include "Display.h"
#include "Timer.h"

#include <string>
#include <vector>

#include <mcp23017.h>
#include <pcf8574.h>

enum ADAFRUIT_COLOUR {
	AC_OFF,
	AC_WHITE,
	AC_RED,
	AC_GREEN,
	AC_BLUE,
	AC_PURPLE,
	AC_YELLOW,
	AC_ICE
};

// Defines for the Adafruit Pi LCD interface board
#ifdef ADAFRUIT_DISPLAY
#define AF_BASE   100

/*   Not yet used defines (for possible future use)
 *
 *   #define AF_SELECT (AF_BASE +  0)
 *   #define AF_RIGHT  (AF_BASE +  1)
 *   #define AF_DOWN   (AF_BASE +  2)
 *   #define AF_UP     (AF_BASE +  3)
 *   #define AF_LEFT   (AF_BASE +  4)
 */

#define AF_RED    (AF_BASE +  6)
#define AF_GREEN  (AF_BASE +  7)
#define AF_BLUE   (AF_BASE +  8)

#define AF_D3     (AF_BASE +  9)
#define AF_D2     (AF_BASE + 10)
#define AF_D1     (AF_BASE + 11)
#define AF_D0     (AF_BASE + 12)
#define AF_E      (AF_BASE + 13)
#define AF_RW     (AF_BASE + 14)
#define AF_RS     (AF_BASE + 15)

#define AF_ON     LOW
#define AF_OFF    HIGH

#define MCP23017  0x20
#endif

// Define for HD44780 connected via a PCF8574 GPIO extender
#ifdef PCF8574_DISPLAY
#define AF_BASE   100

#define AF_RS     (AF_BASE +  0)
#define AF_RW     (AF_BASE +  1)
#define AF_E      (AF_BASE +  2)
#define AF_BL     (AF_BASE +  3)
#define AF_D0     (AF_BASE +  4)
#define AF_D1     (AF_BASE +  5)
#define AF_D2     (AF_BASE +  6)
#define AF_D3     (AF_BASE +  7)

#define PCF8574		0x27
#endif

class CHD44780 : public CDisplay
{
public:
  CHD44780(unsigned int rows, unsigned int cols, const std::string& callsign, unsigned int dmrid, const std::vector<unsigned int>& pins, bool pwm, unsigned int pwmPin, unsigned int pwmBright, unsigned int pwmDim, bool displayClock, bool utc, bool duplex);
  virtual ~CHD44780();

  virtual bool open();

  virtual void close();

protected:
  virtual void setIdleInt();
  virtual void setErrorInt(const char* text);
  virtual void setLockoutInt();

  virtual void writeDStarInt(const char* my1, const char* my2, const char* your, const char* type, const char* reflector);
  virtual void clearDStarInt();

  virtual void writeDMRInt(unsigned int slotNo, const std::string& src, bool group, const std::string& dst, const char* type);
  virtual void clearDMRInt(unsigned int slotNo);

  virtual void writeFusionInt(const char* source, const char* dest, const char* type, const char* origin);
  virtual void clearFusionInt();

  virtual void clockInt(unsigned int ms);

private:
	unsigned int m_rows;
	unsigned int m_cols;
	std::string  m_callsign;
	unsigned int m_dmrid;
	unsigned int m_rb;
	unsigned int m_strb;
	unsigned int m_d0;
	unsigned int m_d1;
	unsigned int m_d2;
	unsigned int m_d3;
	bool         m_pwm;
	unsigned int m_pwmPin;
	unsigned int m_pwmBright;
	unsigned int m_pwmDim;
	bool         m_displayClock;
	bool         m_utc;
	bool         m_duplex;
	int          m_fd;
	bool         m_dmr;
	CTimer       m_clockDisplayTimer;
	CTimer       m_dmrScrollTimer1;
	CTimer       m_dmrScrollTimer2;
	CTimer       m_dstarScrollTimer;

#ifdef ADAFRUIT_DISPLAY
  void adafruitLCDSetup();
  void adafruitLCDColour(ADAFRUIT_COLOUR colour);
#endif

#ifdef PCF8574_DISPLAY
  void pcf8574LCDSetup();
#endif
};

#endif