Arizona 17 User Manual

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 2001 Microchip Technology Inc.

DS39024B-page 37

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

//*   LCD.C

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

//*   Rodger Richey

//*   Principal Applications Engineer

//*   Microchip Technology Incorporated

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

//*   2 December 1998

//*   Compiled using MPLAB C17 C Compiler V2.20

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

//*   This program displays a message on a LCD display

//*   that uses the Hitachi HD44780 controller or

//*   equivalent.  The first line shows “Hello...” and

//*   the second line shows “World!”.

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

//*   Uses an oscillator of 16MHz

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

#include <p17c756.h>

#include <delays.h>

#include “xlcd.h”

// Constant string arrays in program memory

const rom char Hello[] = “Hello...”;

const rom char World[] = “World!”;

// Delays for ~18 Tcy

void DelayFor18TCY(void)

{

Delay10TCY();

Delay10TCY();

return;

}

// Delays for ~15ms

void DelayPORXLCD(void)

{

Delay1KTCYx(70);

return;

}

// Delays for ~5ms

void DelayXLCD(void)

{

Delay1KTCYx(20);

return;

}

void main(void)

{

// Turn A/D off

ADCON1 = 0x0e;

// Configure the external LCD

OpenXLCD(FOUR_BIT&LINES_5X7);