Diff: TextLCD.cpp

Revision:

1:863e06094dfd

Parent:

0:4d453b617559

Child:

2:c7834290ea1c

--- a/TextLCD.cpp	Wed Jul 11 17:37:52 2012 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,191 +0,0 @@
-/* mbed TextLCD Library, for a 4-bit LCD based on HD44780
- * Copyright (c) 2007-2010, sford, http://mbed.org
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- */
-
-#include "TextLCD.h"
-#include "mbed.h"
-
-TextLCD::TextLCD(PinName rs, PinName e, PinName d4, PinName d5,
-                 PinName d6, PinName d7, LCDType type) : _rs(rs),
-        _e(e), _d(d4, d5, d6, d7),
-        _type(type) {
-
-    _e  = 1;
-    _rs = 0;            // command mode
-
- // Winstar 20x4 WH2004-NYG- needs 40ms after VDD> 4,5V
-    /*
-    wait(0.5);
-    writeCommand(0x2); // 4-bit mode
-    wait(0.05);
-    writeCommand(0x28);    // Function set 001 BW N F - -
-    wait(0.05);
-    */
-    //RC:2011-11-23: Newhaven 20x4 OLED data sheet method
-    wait(0.33);
-    writeCommand(0x2); // 4-bit mode
-    wait(0.05);
-    writeCommand(0x2); // 4-bit mode
-    wait(0.05);
-    writeCommand(0x28); // display OFF, "Function Set". 5x8 Font. UK/JP table. Newhaven say 0x08, but this loses 2 rows!
-    wait(0.05); 
-    writeCommand(0x1); // display clear. takes 6,2ms@fosc=250kHz
-    wait(0.05);
-    writeCommand(0x6); // entry mode set
-    wait(0.05); 
-    writeCommand(0x2); // 4-bit mode
-    wait(0.05);                  
-    writeCommand(0x0C); // ON-OFF ctrl: turns display ON, no cursor. Use 0x0E for cursor ON.
-    /* 0x28 also works for Winstar WEH002004ALPP5N00000 OLED display. 0x29= westEuro fon table, 0x2A = UK/Russian
-*/
-
-    wait(0.015);        // Wait 15ms to ensure powered up
-/*
-    // send "Display Settings" 3 times (Only top nibble of 0x30 as we've got 4-bit bus)
-    for (int i=0; i<3; i++) {
-        writeByte(0x3);
-        wait(0.00164);  // this command takes 1.64ms, so wait for it
-    }
-    writeByte(0x2);     // 4-bit mode
-    wait(0.000040f);    // most instructions take 40us
-
-    writeCommand(0x28); // Function set 001 BW N F - -
-    writeCommand(0x0C);
-    writeCommand(0x6);  // Cursor Direction and Display Shift : 0000 01 CD S (CD 0-left, 1-right S(hift) 0-no, 1-yes
-    cls();*/
-}
-
-void TextLCD::character(int column, int row, int c) {
-    int a = address(column, row);
-    writeCommand(a);
-    writeData(c);
-}
-
-void TextLCD::cls() {
-    writeCommand(0x01); // cls, and set cursor to 0
-    wait(0.00164f);     // This command takes 1.64 ms
-    locate(0, 0);
-}
-
-void TextLCD::locate(int column, int row) {
-    _column = column;
-    _row = row;
-}
-
-int TextLCD::_putc(int value) {
-    if (value == '\n') {
-        _column = 0;
-        _row++;
-        if (_row >= rows()) {
-            _row = 0;
-        }
-    } else {
-        character(_column, _row, value);
-        _column++;
-        if (_column >= columns()) {
-            _column = 0;
-            _row++;
-            if (_row >= rows()) {
-                _row = 0;
-            }
-        }
-    }
-    return value;
-}
-
-int TextLCD::_getc() {
-    return -1;
-}
-
-void TextLCD::writeByte(int value) {
-    wait_us(1);
-    _e = 1;          // RC added. Must go high at least 20ns after RS settled.
-    _d = value >> 4;
-    wait_us(1);
-    _e = 0;
-    wait_us(1);
-    _d = value >> 0;
-    _e = 1;
-    wait_us(1);  // E high time is 250ns min, and low time 250ns min.
-    _e = 0;
-    wait_us(100);  // most instructions take 40us
-    //_e = 1;
-}
-
-void TextLCD::writeCommand(int command) {
-    _e = 0;
-    _rs = 0;
-    writeByte(command);
-}
-
-void TextLCD::writeData(int data) {
-    _e = 0;
-    _rs = 1;
-    writeByte(data);
-}
-
-int TextLCD::address(int column, int row) {
-   /* switch (_type) {
-        case LCD20x4:*/
-            switch (row) {
-                case 0:
-                    return 0x80 + column;
-                case 1:
-                    return 0xc0 + column;
-                case 2:
-                    return 0x94 + column;
-                case 3:
-                    return 0xd4 + column;
-            }/*
-        case LCD16x2B:
-            return 0x80 + (row * 40) + column;
-        case LCD16x2:
-        case LCD20x2:
-        default:
-            return 0x80 + (row * 0x40) + column;
-    }*/
-}
-
-int TextLCD::columns() {
-   return 20; 
-    /* switch (_type) {
-       case LCD20x4:
-        case LCD20x2:
-            return 20;
-        case LCD16x2:
-        case LCD16x2B:
-        default:
-            return 16;
-    }*/
-}
-
-int TextLCD::rows() {
-    return 4;
-    /*switch (_type) {
-        case LCD20x4:
-            return 4;
-        case LCD16x2:
-        case LCD16x2B:
-        case LCD20x2:
-        default:
-            return 2;
-    }*/
-}