da falcon80 » mar apr 20, 2004 10:06 am
cio ho provato ma il risultato è lo stesso...e comunque la stessa cosa la ottengo impostando dei pin come e ntrate per dei pulsanti.....comunque ti allego la gestione lcd che iuso io
USER'S ROUTINES DESCRIPTION:
LCD_INIT() -----------> initilalize the LCD.
You must call it the first time you use the LCD
and before any other LCD routines.
LCD_CLEAR() ----------> Clears and Home LCD.
LCD_CMD('char') ------> Send a command to the LCD.
See LCD datasheet for the complete
list of commands.
LCD_GOTO(line,pos) ---> Set the Cursor to a specified Line and position.
Lines available are from 1 to 4. Pos available
starts from 1 to max available on your LCD.
LCD_PUTCH('char') ----> Write a character on LCD (ASCII representation).
LCD_PUTS("string") ---> Write a string on LCD.
LCD_PUTUN(number) ---> Write an Unsigned Number on LCD.
It works both with INT (16bit) and CHAR (8bit).
LCD_PUTSN(number) ---> Write a Signed Number on LCD (with Sign if <0).
It works both with INT (16bit) and CHAR (8bit).
/************************************************************************/
/* */
/* !!! ATTENTION !!! */
/* Follow these simple instructions to configure your LCD module */
/* */
/* 1) check your hardware to determine which lines to use */
/* (you need 6 output lines). */
/* 2) set properly TRIS registers in your main code to configure */
/* the 6 lines as outputs. */
/* 3) In the next step use the defines to set the 6 lines as your */
/* hardware requires. */
/* 4) Set LCD Rows and Columns number using the define as shown */
/* 5) You are ready...your LCD will work!!! :) */
/* */
/************************************************************************/
/************************************************************************/
/* Use this includes if these files are not included in your main code */
/************************************************************************/
//#include "pic.h"
//#include "delay.c"
/************************************************************************/
/* Use the following defines to set the lines as your hardware requires */
/* ...you can use ANY output line of the MCU, even on several ports :) */
/************************************************************************/
#define LCD_RS RD6 // Register select
#define LCD_EN RD7 // Enable
#define LCD_D4 RD2 // LCD data 4
#define LCD_D5 RD3 // LCD data 5
#define LCD_D6 RD4 // LCD data 6
#define LCD_D7 RD5 // LCD data 7
/************************************************************************/
/* Now you have only to write LCD Rows and Columns number */
/************************************************************************/
/* !!! NOTE !!! */
/* Some 1x16 LCD works as 2x8!!! ...be sure how to configure */
/* yours, see its datasheet!!! */
/************************************************************************/
#define LCD_ROWS 2 // valid numbers are: 1,2
// (set to 2 for 2 or more rows)
#define LCD_COLS 20 // valid numbers are: 8,16,20
/************************************************************************/
/* */
/* YOUR LCD IS NOW READY TO WORK!!! :) */
/* YOU CAN IGNORE THE FOLLOWING CODE */
/* ENJOY !!! */
/* */
/************************************************************************/
/************************************************************************/
/* Use the following defines to send fast command */
/* to the LCD */
/* EX: LCD_CMD(LCD_line2); will set the cursor on line 2 */
/* You can add fast command of your own!!! */
/************************************************************************/
/* */
/* !!! NOTE !!! */
/* DON'T CHANGE THE DEFINES WITHIN #if-#endif */
/* */
/************************************************************************/
#define LCD_CLR 0x01 // Clear Display
#define LCD_HOME 0x02 // Cursor to Home position
/************************************************************************/
#if (LCD_COLS==20)
#define LCD_line1 0x80 // Line 1 position 1
#define LCD_line2 0xC0 // Line 2 position 1
#define LCD_line3 0x94 // Line 3 position 1 (20 char LCD)
#define LCD_line4 0xD4 // Line 4 position 1 (20 char LCD)
#else
#define LCD_line1 0x80 // Line 1 position 1
#define LCD_line2 0xC0 // Line 2 position 1
#define LCD_line3 0x90 // Line 3 position 1 (16 char LCD)
#define LCD_line4 0xD0 // Line 4 position 1 (16 char LCD)
#endif
/************************************************************************/
/****************************************/
/* Enable LCD to read data */
/****************************************/
void LCD_STROBE (void)
{
LCD_EN = 1;
DelayUs(1);
LCD_EN=0;
}
/****************************************/
/* Write a nibble to the LCD */
/****************************************/
void LCD_NIBBLE_OUT (unsigned char c )
{
if ( c & 0b10000000 )
LCD_D7=1;
else LCD_D7=0;
if ( c & 0b01000000 )
LCD_D6=1;
else LCD_D6=0;
if ( c & 0b00100000 )
LCD_D5=1;
else LCD_D5=0;
if ( c & 0b00010000 )
LCD_D4=1;
else LCD_D4=0;
LCD_STROBE();
}
/****************************************/
/* Write a byte to the LCD (4 bit mode) */
/****************************************/
void LCD_WRITE (unsigned char c)
{
LCD_NIBBLE_OUT(c);
c <<= 4;
LCD_NIBBLE_OUT(c);
DelayUs(50);
}
/****************************************/
/* send a command to the LCD */
/****************************************/
void LCD_CMD (char c)
{
LCD_RS = 0; // write command
LCD_WRITE(c);
}
/****************************************/
/* GoTO specified line and position */
/****************************************/
void LCD_GOTO (char line,char pos)
{
switch(line)
{
case 1: LCD_CMD((LCD_line1-1)+pos);
break;
case 2: LCD_CMD((LCD_line2-1)+pos);
break;
case 3: LCD_CMD((LCD_line3-1)+pos);
break;
case 4: LCD_CMD((LCD_line4-1)+pos);
}
}
/****************************************/
/* Clear and Home LCD */
/****************************************/
void LCD_CLEAR (void)
{
LCD_CMD(LCD_CLR);
DelayMs(3);
}
/****************************************/
/* Write one character to the LCD */
/****************************************/
void LCD_PUTCH (char c)
{
LCD_RS = 1; // write characters
LCD_WRITE(c);
}
/****************************************/
/* Write numbers to the LCD */
/****************************************/
void LCD_PUTUN (unsigned int c)
{
unsigned char t1,i,wrote;
unsigned int k;
wrote=0;
for (i=4;i>=1;i--)
{
switch(i){
case 4: k=10000;
break;
case 3: k=1000;
break;
case 2: k=100;
break;
case 1: k=10;
}
t1=c/k;
if((wrote)||(t1!=0))
{
LCD_PUTCH(t1+'0');
wrote=1;
}
c-=(t1*k);
}
LCD_PUTCH(c+'0');
}
/****************************************/
void LCD_PUTSN (signed int c)
{
if(c<0)
{
LCD_PUTCH('-');
c*=(-1);
}
LCD_PUTUN(c);
}
/****************************************/
/* Write a string to the LCD */
/****************************************/
void LCD_PUTS (const char * s)
{
LCD_RS = 1; // write characters
while(*s)
LCD_WRITE(*s++);
}
/****************************************/
/* Initialize LCD */
/****************************************/
void LCD_INIT (void)
{
LCD_RS = 0; // write control bytes
DelayMs(15); // power on delay
LCD_D4=1;
LCD_D5=1;
LCD_D6=0;
LCD_D7=0;
LCD_STROBE();
DelayMs(5);
LCD_STROBE();
DelayUs(100);
LCD_STROBE();
DelayMs(5);
LCD_D4=0; // set 4 bit mode
LCD_STROBE();
DelayUs(40);
#if (LCD_ROWS==1)
LCD_WRITE(0b00100000); // 4 bit mode, 1 line, 5x8 font
#else
LCD_WRITE(0b00101000); // 4 bit mode, 2 or more lines, 5x8 font
#endif
LCD_WRITE(0b00001000); // display off
LCD_WRITE(0b00001100); // display on, curson off, blink off
LCD_WRITE(0b00000110); // shift entry mode, display not shifted
}
/************************************************************************/
#undef LCD_ROWS
#undef LCD_COLS
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