Y:/FINAL CODE/LCD_methods.h

Go to the documentation of this file.

/******************************************************************************                      
 *
 *       Copyright (C) 2006 J Team, Inc.
 *       All Rights Reserved
 *
 * File Name      : LCD_methods.h
 * Project Name   : RFIDXpress.mcp
 * Description    : This file contains the methods for interfacing with the LCD.
 *                  
 * Authors: Jared Suttles
 *          Jennifer Tietz
 *          Jonathan Chen
 *          Joshua Chapman
 *
 * Version : 2.0
 * Date    : 05/1/06
 *
 *****************************************************************************/


#define lcdEnable PTG_PTG5
#define lcdRS     PTG_PTG4
#define lcdReset  PTG_PTG6
#define LCD_BUS_0 PTG_PTG0
#define LCD_BUS_1 PTG_PTG1
#define LCD_BUS_2 PTG_PTG2
#define LCD_BUS_3 PTG_PTG3
#define LCD_BUS_4 PTH_PTH2
#define LCD_BUS_5 PTH_PTH1
#define LCD_BUS_6 PTH_PTH0
#define LCD_BUS_7 PTJ_PTJ0
#define NULL      0

void LCD_strobe() {
  lcdEnable = 1;
  lcdEnable = 0; 
}

void LCD_reset() {
  lcdReset=0;
  lcdReset=1;
}

void LCD_set_reg(int func, int val) {
  lcdRS=1;
  LCD_BUS_0 = (func & 0x01); // set register
  LCD_BUS_1 = (func & 0x02) >> 1; // set register
  LCD_BUS_2 = (func & 0x04) >> 2; // set register
  LCD_BUS_3 = (func & 0x08) >> 3; // set register
  LCD_BUS_4 = (func & 0x10) >> 4; // set register
  LCD_BUS_5 = (func & 0x20) >> 5; // set register
  LCD_BUS_6 = (func & 0x40) >> 6; // set register
  LCD_BUS_7 = (func & 0x80) >> 7; // set register
  LCD_strobe();
  
  lcdRS=0;
  LCD_BUS_0 = (val & 0x01); // set register
  LCD_BUS_1 = (val & 0x02) >> 1; // set register
  LCD_BUS_2 = (val & 0x04) >> 2; // set register
  LCD_BUS_3 = (val & 0x08) >> 3; // set register
  LCD_BUS_4 = (val & 0x10) >> 4; // set register
  LCD_BUS_5 = (val & 0x20) >> 5; // set register
  LCD_BUS_6 = (val & 0x40) >> 6; // set register
  LCD_BUS_7 = (val & 0x80) >> 7; // set register
  LCD_strobe();
}

void LCD_set_mode(int mode) {LCD_set_reg(0,mode);}        // 0x32 for Graphic mode Master Display on
void LCD_char_pitch(int cpitch) {LCD_set_reg(1,cpitch);}        // please use 0x07. set char pitch register
void LCD_set_nchar(int nchar) {LCD_set_reg(2,nchar);}    // use 29 for g mode, set no. of char/bytes in row
void LCD_set_time_div(int Nx) {LCD_set_reg(3,Nx);}     // plase use 0x7F
void LCD_set_cursor(int Np) {LCD_set_reg(4,Np);}   // Np = number of pixels the cursor is from top of char
void LCD_set_daddl(int daddl) {LCD_set_reg(8,daddl);} // set lower display address.Always set lower first!
void LCD_set_daddu(int daddu) {LCD_set_reg(9,daddu);} // set upper dispaly address.Always set lower first!
void LCD_set_caddl(int caddl) {LCD_set_reg(10,caddl);} // set lower cursor address.Always set lower first!
void LCD_set_caddu(int caddu) {LCD_set_reg(11,caddu);} // set upper cursor address.Always set lower first!
void LCD_write_data(int data) {LCD_set_reg(12,data);}  // Writes data

void LCD_set_char_add(int row, int col) { // for char mode only
  int abs, lower, upper;
  abs=row*40+col;
  lower=abs%256;
  upper=abs-lower;
  upper=upper >> 8;
  LCD_set_caddl(lower);
  LCD_set_caddu(upper);  
}

void LCD_print_string(char *str) {
  while (*str != NULL) {
    LCD_write_data(*str);
    str++; 
  }
}

void LCD_putchar(char toput) {
  LCD_write_data(toput);
}

void LCD_graphic_ini() {
  int counter;
  LCD_set_time_div(127);     
  LCD_set_mode(50);   
  LCD_char_pitch(7);
  LCD_set_nchar(29);
  LCD_set_daddl(0);
  LCD_set_daddu(0);
  LCD_set_caddl(0);
  LCD_set_caddu(0);
  for (counter = 0; counter < 4096; counter++) {
    LCD_write_data(0x00);
  }
  LCD_set_caddl(0x00);
  LCD_set_caddu(0x00);
}

void LCD_char_ini() {
  int counter;
  LCD_set_time_div(127);
  LCD_set_cursor(167);
  LCD_char_pitch(165);
  LCD_set_nchar(38);
  LCD_set_mode(48);
  LCD_set_daddl(0);
  LCD_set_daddu(0);
  LCD_set_caddl(0);
  LCD_set_caddu(0);
  for (counter = 0; counter < 4096; counter++) {
    LCD_write_data(0x00);
  }
  LCD_set_caddl(0);
  LCD_set_caddu(0);
}

void LCD_clr_scr_char(int screen) {
 int row=screen*12;
 int i;
 LCD_set_char_add(row,0);
 for (i=0; i<12; i++) {
   LCD_print_string("                                        ");
 }
}

---