Satoshi Motoyama / Mbed 2 deprecated ku-make_sensor

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thank you for http://mbed.org/forum/bugs-suggestions/topic/3956/ thread.

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extlib/TextLCD.cpp@0:d368632c8662, 2012-12-06 (annotated)

Committer:
kumajoi
Date:
Thu Dec 06 17:44:24 2012 +0000
Revision:
0:d368632c8662
for MakeFairTokyo2012

Who changed what in which revision?

UserRevisionLine numberNew contents of line
kumajoi 0:d368632c8662 1 /* mbed TextLCD Library, for a 4-bit LCD based on HD44780
kumajoi 0:d368632c8662 2 * Copyright (c) 2007-2010, sford
kumajoi 0:d368632c8662 3 *
kumajoi 0:d368632c8662 4 * Permission is hereby granted, free of charge, to any person obtaining a copy
kumajoi 0:d368632c8662 5 * of this software and associated documentation files (the "Software"), to deal
kumajoi 0:d368632c8662 6 * in the Software without restriction, including without limitation the rights
kumajoi 0:d368632c8662 7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
kumajoi 0:d368632c8662 8 * copies of the Software, and to permit persons to whom the Software is
kumajoi 0:d368632c8662 9 * furnished to do so, subject to the following conditions:
kumajoi 0:d368632c8662 10 *
kumajoi 0:d368632c8662 11 * The above copyright notice and this permission notice shall be included in
kumajoi 0:d368632c8662 12 * all copies or substantial portions of the Software.
kumajoi 0:d368632c8662 13 *
kumajoi 0:d368632c8662 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
kumajoi 0:d368632c8662 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
kumajoi 0:d368632c8662 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
kumajoi 0:d368632c8662 17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
kumajoi 0:d368632c8662 18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
kumajoi 0:d368632c8662 19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
kumajoi 0:d368632c8662 20 * THE SOFTWARE.
kumajoi 0:d368632c8662 21 */
kumajoi 0:d368632c8662 22
kumajoi 0:d368632c8662 23 /*
kumajoi 0:d368632c8662 24 * Modified for star board orange by Shinichiro Nakamura. (CuBeatSystems)
kumajoi 0:d368632c8662 25 *
kumajoi 0:d368632c8662 26 * ID : shintamainjp
kumajoi 0:d368632c8662 27 * Added : RW-
kumajoi 0:d368632c8662 28 */
kumajoi 0:d368632c8662 29
kumajoi 0:d368632c8662 30 #include "TextLCD.h"
kumajoi 0:d368632c8662 31 #include "mbed.h"
kumajoi 0:d368632c8662 32
kumajoi 0:d368632c8662 33 TextLCD::TextLCD(PinName rs, PinName rw, PinName e, PinName d0, PinName d1,
kumajoi 0:d368632c8662 34 PinName d2, PinName d3, LCDType type) : _rs(rs), _rw(rw),
kumajoi 0:d368632c8662 35 _e(e), _d(d0, d1, d2, d3),
kumajoi 0:d368632c8662 36 _type(type) {
kumajoi 0:d368632c8662 37
kumajoi 0:d368632c8662 38 _e = 1;
kumajoi 0:d368632c8662 39 _rs = 0; // command mode
kumajoi 0:d368632c8662 40 _rw = 0;
kumajoi 0:d368632c8662 41
kumajoi 0:d368632c8662 42 wait(0.015); // Wait 15ms to ensure powered up
kumajoi 0:d368632c8662 43
kumajoi 0:d368632c8662 44 // send "Display Settings" 3 times (Only top nibble of 0x30 as we've got 4-bit bus)
kumajoi 0:d368632c8662 45 for (int i=0; i<3; i++) {
kumajoi 0:d368632c8662 46 writeByte(0x3);
kumajoi 0:d368632c8662 47 wait(0.00164); // this command takes 1.64ms, so wait for it
kumajoi 0:d368632c8662 48 }
kumajoi 0:d368632c8662 49 writeByte(0x2); // 4-bit mode
kumajoi 0:d368632c8662 50 wait(0.000040f); // most instructions take 40us
kumajoi 0:d368632c8662 51
kumajoi 0:d368632c8662 52 writeCommand(0x28); // Function set 001 BW N F - -
kumajoi 0:d368632c8662 53 writeCommand(0x0C);
kumajoi 0:d368632c8662 54 writeCommand(0x6); // Cursor Direction and Display Shift : 0000 01 CD S (CD 0-left, 1-right S(hift) 0-no, 1-yes
kumajoi 0:d368632c8662 55 cls();
kumajoi 0:d368632c8662 56 }
kumajoi 0:d368632c8662 57
kumajoi 0:d368632c8662 58 void TextLCD::character(int column, int row, int c) {
kumajoi 0:d368632c8662 59 int a = address(column, row);
kumajoi 0:d368632c8662 60 writeCommand(a);
kumajoi 0:d368632c8662 61 writeData(c);
kumajoi 0:d368632c8662 62 }
kumajoi 0:d368632c8662 63
kumajoi 0:d368632c8662 64 void TextLCD::cls() {
kumajoi 0:d368632c8662 65 writeCommand(0x01); // cls, and set cursor to 0
kumajoi 0:d368632c8662 66 wait(0.00164f); // This command takes 1.64 ms
kumajoi 0:d368632c8662 67 locate(0, 0);
kumajoi 0:d368632c8662 68 }
kumajoi 0:d368632c8662 69
kumajoi 0:d368632c8662 70 void TextLCD::locate(int column, int row) {
kumajoi 0:d368632c8662 71 _column = column;
kumajoi 0:d368632c8662 72 _row = row;
kumajoi 0:d368632c8662 73 }
kumajoi 0:d368632c8662 74
kumajoi 0:d368632c8662 75 int TextLCD::_putc(int value) {
kumajoi 0:d368632c8662 76 if (value == '\n') {
kumajoi 0:d368632c8662 77 _column = 0;
kumajoi 0:d368632c8662 78 _row++;
kumajoi 0:d368632c8662 79 if (_row >= rows()) {
kumajoi 0:d368632c8662 80 _row = 0;
kumajoi 0:d368632c8662 81 }
kumajoi 0:d368632c8662 82 } else {
kumajoi 0:d368632c8662 83 character(_column, _row, value);
kumajoi 0:d368632c8662 84 _column++;
kumajoi 0:d368632c8662 85 if (_column >= columns()) {
kumajoi 0:d368632c8662 86 _column = 0;
kumajoi 0:d368632c8662 87 _row++;
kumajoi 0:d368632c8662 88 if (_row >= rows()) {
kumajoi 0:d368632c8662 89 _row = 0;
kumajoi 0:d368632c8662 90 }
kumajoi 0:d368632c8662 91 }
kumajoi 0:d368632c8662 92 }
kumajoi 0:d368632c8662 93 return value;
kumajoi 0:d368632c8662 94 }
kumajoi 0:d368632c8662 95
kumajoi 0:d368632c8662 96 int TextLCD::_getc() {
kumajoi 0:d368632c8662 97 return -1;
kumajoi 0:d368632c8662 98 }
kumajoi 0:d368632c8662 99
kumajoi 0:d368632c8662 100 void TextLCD::writeByte(int value) {
kumajoi 0:d368632c8662 101 _d = value >> 4;
kumajoi 0:d368632c8662 102 wait(0.000040f); // most instructions take 40us
kumajoi 0:d368632c8662 103 _e = 0;
kumajoi 0:d368632c8662 104 wait(0.000040f);
kumajoi 0:d368632c8662 105 _e = 1;
kumajoi 0:d368632c8662 106 _d = value >> 0;
kumajoi 0:d368632c8662 107 wait(0.000040f);
kumajoi 0:d368632c8662 108 _e = 0;
kumajoi 0:d368632c8662 109 wait(0.000040f); // most instructions take 40us
kumajoi 0:d368632c8662 110 _e = 1;
kumajoi 0:d368632c8662 111 }
kumajoi 0:d368632c8662 112
kumajoi 0:d368632c8662 113 void TextLCD::writeCommand(int command) {
kumajoi 0:d368632c8662 114 _rs = 0;
kumajoi 0:d368632c8662 115 writeByte(command);
kumajoi 0:d368632c8662 116 }
kumajoi 0:d368632c8662 117
kumajoi 0:d368632c8662 118 void TextLCD::writeData(int data) {
kumajoi 0:d368632c8662 119 _rs = 1;
kumajoi 0:d368632c8662 120 writeByte(data);
kumajoi 0:d368632c8662 121 }
kumajoi 0:d368632c8662 122
kumajoi 0:d368632c8662 123 int TextLCD::address(int column, int row) {
kumajoi 0:d368632c8662 124 switch (_type) {
kumajoi 0:d368632c8662 125 case LCD20x4:
kumajoi 0:d368632c8662 126 switch (row) {
kumajoi 0:d368632c8662 127 case 0:
kumajoi 0:d368632c8662 128 return 0x80 + column;
kumajoi 0:d368632c8662 129 case 1:
kumajoi 0:d368632c8662 130 return 0xc0 + column;
kumajoi 0:d368632c8662 131 case 2:
kumajoi 0:d368632c8662 132 return 0x94 + column;
kumajoi 0:d368632c8662 133 case 3:
kumajoi 0:d368632c8662 134 return 0xd4 + column;
kumajoi 0:d368632c8662 135 }
kumajoi 0:d368632c8662 136 case LCD16x2B:
kumajoi 0:d368632c8662 137 return 0x80 + (row * 40) + column;
kumajoi 0:d368632c8662 138 case LCD16x2:
kumajoi 0:d368632c8662 139 case LCD20x2:
kumajoi 0:d368632c8662 140 default:
kumajoi 0:d368632c8662 141 return 0x80 + (row * 0x40) + column;
kumajoi 0:d368632c8662 142 }
kumajoi 0:d368632c8662 143 }
kumajoi 0:d368632c8662 144
kumajoi 0:d368632c8662 145 int TextLCD::columns() {
kumajoi 0:d368632c8662 146 switch (_type) {
kumajoi 0:d368632c8662 147 case LCD20x4:
kumajoi 0:d368632c8662 148 case LCD20x2:
kumajoi 0:d368632c8662 149 return 20;
kumajoi 0:d368632c8662 150 case LCD16x2:
kumajoi 0:d368632c8662 151 case LCD16x2B:
kumajoi 0:d368632c8662 152 default:
kumajoi 0:d368632c8662 153 return 16;
kumajoi 0:d368632c8662 154 }
kumajoi 0:d368632c8662 155 }
kumajoi 0:d368632c8662 156
kumajoi 0:d368632c8662 157 int TextLCD::rows() {
kumajoi 0:d368632c8662 158 switch (_type) {
kumajoi 0:d368632c8662 159 case LCD20x4:
kumajoi 0:d368632c8662 160 return 4;
kumajoi 0:d368632c8662 161 case LCD16x2:
kumajoi 0:d368632c8662 162 case LCD16x2B:
kumajoi 0:d368632c8662 163 case LCD20x2:
kumajoi 0:d368632c8662 164 default:
kumajoi 0:d368632c8662 165 return 2;
kumajoi 0:d368632c8662 166 }
kumajoi 0:d368632c8662 167 }