Arizona Picdem 17 User Manual

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 2001 Microchip Technology Inc.

DS39024B-page 39

#pragma nolist

/*****************************************************************

*   PICmicro C Libraries V2.10                                      

*   Written and Tested using MPLABC V2.10                           

******************************************************************

*   Filename:   

 xlcd.h                                          

*   Date:

14 April 1998                                   

*   File Version:

2.10                                            

******************************************************************

*   Functions:                                                      

*

Header file                                         

******************************************************************

*   Revision History:                                               

*      V1.00 - Beta release of Peripheral Libraries for V1.21       

*      V2.00 - Release of Peripheral Libraries for V2.00            

*      V2.10 - Release of Peripheral Libraries for V2.10            

*              Added putrsXLCD to output strings in ROM to XLCD     

******************************************************************

*   Notes:                                                          

* - ROM usage varies depending on specified device            

* - These libraries routines are written to support the       

*   Hitachi HD44780 LCD controller.                           

* - The user must define the following items:                 

*

- The LCD interface type (4- or 8-bits)             

*

- If 4-bit mode                                     

*

- whether using the upper or lower nibble   

*

- The data port                                     

*

- The tris register for data port           

*

- The control signal ports and pins         

*

- The control signal port tris and pins     

*

- The user must provide three delay routines:               

*

- DelayFor18TCY() provides a 18 Tcy delay           

*

- DelayPORXLCD() provides at least 15ms delay      

*    

- DelayXLCD() provides at least 5ms delay           

*****************************************************************/

#ifndef __XLCD_H

#define __XLCD_H

// Interface type 8-bit or 4-bit

// For 4-bit operation comment out the #define BIT8

//#define BIT8

// When in 4-bit interface define if the data is in the upper

// or lower nibble.  For lower nibble, comment out the #define UPPER

//#define UPPER

// DATA_PORT defines the port on which the LCD

// data lines are connected to

#define DATA_PORT PORTF

#define TRIS_DATA_PORT DDRF

// CTRL_PORT defines the port where the control

// lines are connected

// These are just samples, change to match your application

#define RW_PIN PORTGbits.RG0

// Port for RW

#define TRIS_RW DDRGbits.RG0

// TRIS for RW