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DAG!
Code:#if ENDIAN = LOWER BF = LOWEND; #else BF = UPPEND; #endif [B][COLOR="Red"] .....produces... D:\Micro\PIC\LCD_LIB\lcd.c:6:Error [1029] malformed expression in '#if'[/COLOR][/B]
So i guess i cant
#define Upper 0
#define Lower 1
#define Endian Lower
#if Endian==Lower
//some code
#else
//some other code
#endif
At least according to their compiler download page the "fully functional free demo version" has only one limitation; "Note: in Demo version, hex output is limited to 2k of program words."
//THIS IS lcd.h
#ifndef __LCD_H
#define __LCD_H
#include <delays.h>
#include <p18cxxx.h>
#define ENDIAN LOWER //0 = 0:3 *** 1 = 4:7
#define LCD_PORT LATB //LCD DATA PORT
#define LCD_TRIS TRISB //LCD DATA DIRECTION PORT
#define LCD_DAT PORTB //LCD INPUT DATA VALUES
#define LCD_RS LATBbits.LATB4 //LCD Command/Data Control
#define LCD_E LATBbits.LATB5 //LCD Enable Line
//#define LCD_RW LATBbits.LATB6 //LCD Read/Write Control
#define LCD_TRIS_RS TRISBbits.TRISB4
#define LCD_TRIS_E TRISBbits.TRISB5
//#define LCD_TRIS_RW TRISBbits.TRISB4
#define CMD 0
#define TXT 1
#define LOWER 0
#define UPPER 1
#define LOWEND 0x08
#define UPPEND 0x80
#define LOWMSK 0x0F
#define UPPMSK 0xF0
#define DISPLAY 1
#define CURSOR 0
#define RIGHT 1
#define LEFT 0
#define MHz *1000000
#define MYFOSC 8MHz
void WaitLCDBusy(void);
void LCD_Init(void);
void LCD_DATA(unsigned char data,unsigned char type);
void LCD_NYB(unsigned char nyb);
void LCD_STR(unsigned rom char *text);
void LCD_LINE(char line);
void ShiftDisplay(unsigned char DC,unsigned char RL);
void DelayMS(unsigned int ms);
extern unsigned char BF;
#endif//THIS IS lcd.c
#include "lcd.h"
unsigned char BF;
//--------------------------------------------------------------------------------//
void LCD_Init(void){
#if ENDIAN==LOWER //This will check if ENDIAN is LOW and if so
BF = LOWEND; //Set the BusyFlag MASK to check lower nibble
#else //if not LOW, but HIGH(UPPER) then
BF = UPPEND; //Set BF to check upper nibble
#endif
#if ENDIAN==LOWER
LCD_TRIS &= UPPMSK; //ensure lower nibble is output
#else
LCD_TRIS &= LOWMSK; //ensure upper nibble is output
#endif
LCD_E=0; //clear enable
LCD_RS = 0; //going to write command
LCD_TRIS_E=0; //Set enable to output
LCD_TRIS_RS=0; //set RS to output
#ifdef LCD_RW
LCD_TRIS_RW=0;
LCD_RW=0;
#endif
DelayMS(30); //delay for LCD to initialise.
LCD_NYB(0x30); //Required for initialisation
DelayMS(5); //required delay
LCD_NYB(0x30); //Required for initialisation
DelayMS(1); //required delay
LCD_DATA(0x02,0); //set to 4 bit interface, 1 line and 5*7 font
LCD_DATA(0x28,0); //set to 4 bit interface, 2 line and 5*10 font
LCD_DATA(0x0c,0); //set to 4 bit interface, 2 line and 5*7 font
LCD_DATA(0x01,0); //clear display
LCD_DATA(0x06,0); //move cursor right after write
}
//--------------------------------------------------------------------------------//
void LCD_DATA(unsigned char data,unsigned char type){
WaitLCDBusy(); //TEST LCD FOR BUSY
if(type == CMD){
LCD_RS = 0; //COMMAND MODE
} else {
LCD_RS = 1; //CHARACTER/DATA MODE
}
LCD_NYB(data>>4); //WRITE THE UPPER NIBBLE
LCD_NYB(data); //WRITE THE LOWER NIBBLE
}
//--------------------------------------------------------------------------------//
void WaitLCDBusy(void){
#ifdef LCD_RW //IF THE LCD_RW DEFINITION IS USED
LCD_RS=0; //COMMAND MODE
LCD_RW=1; //READ MODE
#if ENDIAN==LOWER //ENDIAN = 0?
LCD_TRIS |= LOWMSK; //YES = SET LOWER NIBBLE INPUT
#else //ELSE ENDIAN = 1
LCD_TRIS |= UPPMSK; //SET UPPER NIBBLE INPUT
#endif
LCD_E=1; //ENABLE LCD DATA LINES
while(LCD_DAT & BF); //TEST BUSY FLAG BIT
LCD_E=0; //DISABLE LCD DATA LINES
#if ENDIAN==LOWER //ENDIAN = 0?
LCD_TRIS &= UPPMSK; //YES = SET LOWER NIBBLE OUTPUT
#else //ELSE ENDIAN = 1
LCD_TRIS &= LOWMSK; //SET UPPER NIBBLE OUTPUT
#endif
LCD_RW=0;
#else
DelayMS(2); //DELAY 1 MilliSeconds
#endif
}
//--------------------------------------------------------------------------------//
void LCD_NYB(unsigned char nyb){
#if ENDIAN==LOWER //ENDIAN = 0? Yes Send the data LOWER
LCD_PORT &= UPPMSK; //CLEAR LOWER PORT NIBBLE
LCD_PORT |= (nyb & LOWMSK); //SEND DATA LINE THE INFO
#else //ENDIAN = 1 so send to HIGHER
LCD_PORT &= LOWMSK; //CLEAR UPPER PORT NIBBLE
LCD_PORT |= ((nyb << 4) & UPPMSK); //SHIFT DATA OVER << 4, CLEAR LOWER NIBBLE
#endif
LCD_E = 1; //ENABLE LCD DATA LINE
Nop(); //SMALL DELAY
LCD_E = 0; //DISABLE LCD DATA LINE
}
//--------------------------------------------------------------------------------//
void LCD_STR(unsigned rom char *text){
while(*text){
LCD_DATA(*text++,1);
}
}
//--------------------------------------------------------------------------------//
void LCD_LINE(char line){
switch(line){
case 0:
case 1:
LCD_DATA(0x80,0);
break;
case 2:
LCD_DATA(0xC0,0);
break;
}
}
//--------------------------------------------------------------------------------//
void ShiftDisplay(unsigned char DC,unsigned char RL){
unsigned char shift=0x10;
if(DC == DISPLAY)
shift |= 0b00001000;
if(RL == RIGHT)
shift |= 0b00000100;
LCD_DATA(shift,0);
}
//--------------------------------------------------------------------------------//
void DelayMS(unsigned int ms){
unsigned int x;
for(x=0;x<ms;x++)
Delay1KTCYx(2);
}
//--------------------------------------------------------------------------------//Mr RB said:
i use the box and add the eggs and milk and bananas heh anyway. Im thinking of what else a LCD needs... like code i will add is:
void main(){
char oldstate = 0;
TRISB = 0xFF; // set PORTB to be input
TRISD = 0; // set PORTD to be output
PORTD = 0x0F; // initialize PORTD
do {
if (Button(&PORTB, 1, 1, 1)) // detect logical one on RB1 pin
oldstate = 1;
if (oldstate && Button(&PORTB, 1, 1, 0)) { // detect one-to-zero transition on RB1 pin
PORTD = ~PORTD; // negates value on PORTD
oldstate = 0;
}
} while(1); // endless loop
}if(button(&PORTB,1,1,1)) blah;if(PORTB.F1) blah;
