lcdParallel.h

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#ifndef LCDPARALLEL_H
#define LCDPARALLEL_H

#if defined(__cplusplus)
extern "C" {
#endif


// commands
#define LCDP_CLEARDISPLAY 0x01
#define LCDP_RETURNHOME 0x02
#define LCDP_ENTRYMODESET 0x04
#define LCDP_DISPLAYCONTROL 0x08
#define LCDP_CURSORSHIFT 0x10
#define LCDP_FUNCTIONSET 0x20
#define LCDP_SETCGRAMADDR 0x40
#define LCDP_SETDDRAMADDR 0x80

// flags for display entry mode
#define LCDP_ENTRYRIGHT 0x00
#define LCDP_ENTRYLEFT 0x02
#define LCDP_ENTRYSHIFTINCREMENT 0x01
#define LCDP_ENTRYSHIFTDECREMENT 0x00

// flags for display on/off control
#define LCDP_DISPLAYON 0x04
#define LCDP_DISPLAYOFF 0x00
#define LCDP_CURSORON 0x02
#define LCDP_CURSOROFF 0x00
#define LCDP_BLINKON 0x01
#define LCDP_BLINKOFF 0x00

// flags for display/cursor shift
#define LCDP_DISPLAYMOVE 0x08
#define LCDP_CURSORMOVE 0x00
#define LCDP_MOVERIGHT 0x04
#define LCDP_MOVELEFT 0x00

// flags for function set
#define LCDP_8BITMODE 0x10
#define LCDP_4BITMODE 0x00
#define LCDP_2LINE 0x08
#define LCDP_1LINE 0x00
#define LCDP_5x10DOTS 0x04
#define LCDP_5x8DOTS 0x00

// flag for command or write
#define LCDP_SEND_COMMAND 0x00
#define LCDP_SEND_WRITE 0x01


typedef struct lcdParallel_st {
  int _rs_pin;     // LOW: command.  HIGH: character.
  int _enable_pin; // activated by a HIGH pulse.
  int _data_pins[8];
  
  char _displayfunction;
  char _displaycontrol;
  char _displaymode;
  
  char _numlines;
  char _row_offsets[4];
} lcdParallel_t;  

typedef lcdParallel_t lcdParallel;


lcdParallel *lcdParallel_init(char cols, char lines, char dotsize, char rs,
            char enable, char d0, char d1, char d2, char d3);

lcdParallel *lcdParallel_init8(char cols, char lines, char dotsize, char rs,
            char enable, char d0, char d1, char d2, char d3,
            char d4, char d5, char d6, char d7);

int lcdParallel_print(lcdParallel *device, const char *fmt, ...);

void lcdParallel_writeChar(lcdParallel *device, char value);

void lcdParallel_clear(lcdParallel *device);

void lcdParallel_home(lcdParallel *device);

void lcdParallel_noDisplay(lcdParallel *device);

void lcdParallel_display(lcdParallel *device);

void lcdParallel_noBlink(lcdParallel *device);

void lcdParallel_blink(lcdParallel *device);

void lcdParallel_noCursor(lcdParallel *device);

void lcdParallel_cursor(lcdParallel *device);

void lcdParallel_scrollDisplayLeft(lcdParallel *device);

void lcdParallel_scrollDisplayRight(lcdParallel *device);

void lcdParallel_leftToRight(lcdParallel *device);

void lcdParallel_rightToLeft(lcdParallel *device);

void lcdParallel_autoscroll(lcdParallel *device);

void lcdParallel_noAutoscroll(lcdParallel *device);

void lcdParallel_createChar(lcdParallel *device, char loc, char charmap[]);

void lcdParallel_setCursor(lcdParallel *device, char col, char row); 

void lcdParallel_send(lcdParallel *device, char value, char mode);

void lcdParallel_write(lcdParallel *device, char value, char bits);

#if defined(__cplusplus)
}
#endif
/* __cplusplus */ 
#endif
/* LCDPARALLEL_H */