Yasushi TAUCHI / Mbed 2 deprecated giken9_HTMLServer_Temp_Sample

ソースの整理中ですが、利用はできます。 大きなファイルはできないかもしれません。

Dependencies:   EthernetInterface HttpServer TextLCD expatlib mbed-rpc mbed-rtos mbed Socket lwip-eth lwip-sys lwip

Fork of giken9_HTMLServer_Sample by Yasushi TAUCHI

TextLCD/TextLCD.cpp@2:6f25f8327180, 2014-03-12 (annotated)

Committer:
yueee_yt
Date:
Wed Mar 12 06:30:30 2014 +0000
Revision:
2:6f25f8327180
Parent:
0:7766f6712673 
debug comment

Who changed what in which revision?

UserRevisionLine numberNew contents of line
yueee_yt 0:7766f6712673 1 /* mbed TextLCD Library, for a 4-bit LCD based on HD44780
yueee_yt 0:7766f6712673 2 * Copyright (c) 2007-2010, sford, http://mbed.org
yueee_yt 0:7766f6712673 3 *
yueee_yt 0:7766f6712673 4 * Permission is hereby granted, free of charge, to any person obtaining a copy
yueee_yt 0:7766f6712673 5 * of this software and associated documentation files (the "Software"), to deal
yueee_yt 0:7766f6712673 6 * in the Software without restriction, including without limitation the rights
yueee_yt 0:7766f6712673 7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
yueee_yt 0:7766f6712673 8 * copies of the Software, and to permit persons to whom the Software is
yueee_yt 0:7766f6712673 9 * furnished to do so, subject to the following conditions:
yueee_yt 0:7766f6712673 10 *
yueee_yt 0:7766f6712673 11 * The above copyright notice and this permission notice shall be included in
yueee_yt 0:7766f6712673 12 * all copies or substantial portions of the Software.
yueee_yt 0:7766f6712673 13 *
yueee_yt 0:7766f6712673 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
yueee_yt 0:7766f6712673 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
yueee_yt 0:7766f6712673 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
yueee_yt 0:7766f6712673 17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
yueee_yt 0:7766f6712673 18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
yueee_yt 0:7766f6712673 19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
yueee_yt 0:7766f6712673 20 * THE SOFTWARE.
yueee_yt 0:7766f6712673 21 */
yueee_yt 0:7766f6712673 22
yueee_yt 0:7766f6712673 23 #include "TextLCD.h"
yueee_yt 0:7766f6712673 24 #include "mbed.h"
yueee_yt 0:7766f6712673 25
yueee_yt 0:7766f6712673 26 TextLCD::TextLCD(PinName rs, PinName e, PinName d4, PinName d5,
yueee_yt 0:7766f6712673 27 PinName d6, PinName d7, LCDType type) : _rs(rs),
yueee_yt 0:7766f6712673 28 _e(e), _d(d4, d5, d6, d7),
yueee_yt 0:7766f6712673 29 _type(type) {
yueee_yt 0:7766f6712673 30
yueee_yt 0:7766f6712673 31 _e = 1;
yueee_yt 0:7766f6712673 32 _rs = 0; // command mode
yueee_yt 0:7766f6712673 33
yueee_yt 0:7766f6712673 34 wait(0.015); // Wait 15ms to ensure powered up
yueee_yt 0:7766f6712673 35
yueee_yt 0:7766f6712673 36 // send "Display Settings" 3 times (Only top nibble of 0x30 as we've got 4-bit bus)
yueee_yt 0:7766f6712673 37 for (int i=0; i<3; i++) {
yueee_yt 0:7766f6712673 38 writeByte(0x3);
yueee_yt 0:7766f6712673 39 wait(0.00164); // this command takes 1.64ms, so wait for it
yueee_yt 0:7766f6712673 40 //Thread::wait(2);
yueee_yt 0:7766f6712673 41 }
yueee_yt 0:7766f6712673 42 writeByte(0x2); // 4-bit mode
yueee_yt 0:7766f6712673 43 wait(0.000040f); // most instructions take 40us
yueee_yt 0:7766f6712673 44 //Thread::wait(1);
yueee_yt 0:7766f6712673 45 writeCommand(0x28); // Function set 001 BW N F - -
yueee_yt 0:7766f6712673 46 writeCommand(0x0C);
yueee_yt 0:7766f6712673 47 writeCommand(0x6); // Cursor Direction and Display Shift : 0000 01 CD S (CD 0-left, 1-right S(hift) 0-no, 1-yes
yueee_yt 0:7766f6712673 48 cls();
yueee_yt 0:7766f6712673 49 }
yueee_yt 0:7766f6712673 50
yueee_yt 0:7766f6712673 51 void TextLCD::character(int column, int row, int c) {
yueee_yt 0:7766f6712673 52 int a = address(column, row);
yueee_yt 0:7766f6712673 53 writeCommand(a);
yueee_yt 0:7766f6712673 54 writeData(c);
yueee_yt 0:7766f6712673 55 }
yueee_yt 0:7766f6712673 56
yueee_yt 0:7766f6712673 57 void TextLCD::cls() {
yueee_yt 0:7766f6712673 58 writeCommand(0x01); // cls, and set cursor to 0
yueee_yt 0:7766f6712673 59 wait(0.00164f); // This command takes 1.64 ms
yueee_yt 0:7766f6712673 60 //Thread::wait(2);
yueee_yt 0:7766f6712673 61 locate(0, 0);
yueee_yt 0:7766f6712673 62 }
yueee_yt 0:7766f6712673 63
yueee_yt 0:7766f6712673 64 void TextLCD::locate(int column, int row) {
yueee_yt 0:7766f6712673 65 _column = column;
yueee_yt 0:7766f6712673 66 _row = row;
yueee_yt 0:7766f6712673 67 }
yueee_yt 0:7766f6712673 68
yueee_yt 0:7766f6712673 69 int TextLCD::_putc(int value) {
yueee_yt 0:7766f6712673 70 if (value == '\n') {
yueee_yt 0:7766f6712673 71 _column = 0;
yueee_yt 0:7766f6712673 72 _row++;
yueee_yt 0:7766f6712673 73 if (_row >= rows()) {
yueee_yt 0:7766f6712673 74 _row = 0;
yueee_yt 0:7766f6712673 75 }
yueee_yt 0:7766f6712673 76 } else {
yueee_yt 0:7766f6712673 77 character(_column, _row, value);
yueee_yt 0:7766f6712673 78 _column++;
yueee_yt 0:7766f6712673 79 if (_column >= columns()) {
yueee_yt 0:7766f6712673 80 _column = 0;
yueee_yt 0:7766f6712673 81 _row++;
yueee_yt 0:7766f6712673 82 if (_row >= rows()) {
yueee_yt 0:7766f6712673 83 _row = 0;
yueee_yt 0:7766f6712673 84 }
yueee_yt 0:7766f6712673 85 }
yueee_yt 0:7766f6712673 86 }
yueee_yt 0:7766f6712673 87 return value;
yueee_yt 0:7766f6712673 88 }
yueee_yt 0:7766f6712673 89
yueee_yt 0:7766f6712673 90 int TextLCD::_getc() {
yueee_yt 0:7766f6712673 91 return -1;
yueee_yt 0:7766f6712673 92 }
yueee_yt 0:7766f6712673 93
yueee_yt 0:7766f6712673 94 void TextLCD::writeByte(int value) {
yueee_yt 0:7766f6712673 95 _d = value >> 4;
yueee_yt 0:7766f6712673 96 wait(0.000040f); // most instructions take 40us
yueee_yt 0:7766f6712673 97 //Thread::wait(1);
yueee_yt 0:7766f6712673 98 _e = 0;
yueee_yt 0:7766f6712673 99 wait(0.000040f);
yueee_yt 0:7766f6712673 100 //Thread::wait(1);
yueee_yt 0:7766f6712673 101 _e = 1;
yueee_yt 0:7766f6712673 102 _d = value >> 0;
yueee_yt 0:7766f6712673 103 wait(0.000040f);
yueee_yt 0:7766f6712673 104 //Thread::wait(1);
yueee_yt 0:7766f6712673 105 _e = 0;
yueee_yt 0:7766f6712673 106 wait(0.000040f); // most instructions take 40us
yueee_yt 0:7766f6712673 107 //Thread::wait(1);
yueee_yt 0:7766f6712673 108 _e = 1;
yueee_yt 0:7766f6712673 109 }
yueee_yt 0:7766f6712673 110
yueee_yt 0:7766f6712673 111 void TextLCD::writeCommand(int command) {
yueee_yt 0:7766f6712673 112 _rs = 0;
yueee_yt 0:7766f6712673 113 writeByte(command);
yueee_yt 0:7766f6712673 114 }
yueee_yt 0:7766f6712673 115
yueee_yt 0:7766f6712673 116 void TextLCD::writeData(int data) {
yueee_yt 0:7766f6712673 117 _rs = 1;
yueee_yt 0:7766f6712673 118 writeByte(data);
yueee_yt 0:7766f6712673 119 }
yueee_yt 0:7766f6712673 120
yueee_yt 0:7766f6712673 121 int TextLCD::address(int column, int row) {
yueee_yt 0:7766f6712673 122 switch (_type) {
yueee_yt 0:7766f6712673 123 case LCD20x4:
yueee_yt 0:7766f6712673 124 switch (row) {
yueee_yt 0:7766f6712673 125 case 0:
yueee_yt 0:7766f6712673 126 return 0x80 + column;
yueee_yt 0:7766f6712673 127 case 1:
yueee_yt 0:7766f6712673 128 return 0xc0 + column;
yueee_yt 0:7766f6712673 129 case 2:
yueee_yt 0:7766f6712673 130 return 0x94 + column;
yueee_yt 0:7766f6712673 131 case 3:
yueee_yt 0:7766f6712673 132 return 0xd4 + column;
yueee_yt 0:7766f6712673 133 }
yueee_yt 0:7766f6712673 134 case LCD16x2B:
yueee_yt 0:7766f6712673 135 return 0x80 + (row * 40) + column;
yueee_yt 0:7766f6712673 136 case LCD16x2:
yueee_yt 0:7766f6712673 137 case LCD20x2:
yueee_yt 0:7766f6712673 138 default:
yueee_yt 0:7766f6712673 139 return 0x80 + (row * 0x40) + column;
yueee_yt 0:7766f6712673 140 }
yueee_yt 0:7766f6712673 141 }
yueee_yt 0:7766f6712673 142
yueee_yt 0:7766f6712673 143 int TextLCD::columns() {
yueee_yt 0:7766f6712673 144 switch (_type) {
yueee_yt 0:7766f6712673 145 case LCD20x4:
yueee_yt 0:7766f6712673 146 case LCD20x2:
yueee_yt 0:7766f6712673 147 return 20;
yueee_yt 0:7766f6712673 148 case LCD16x2:
yueee_yt 0:7766f6712673 149 case LCD16x2B:
yueee_yt 0:7766f6712673 150 default:
yueee_yt 0:7766f6712673 151 return 16;
yueee_yt 0:7766f6712673 152 }
yueee_yt 0:7766f6712673 153 }
yueee_yt 0:7766f6712673 154
yueee_yt 0:7766f6712673 155 int TextLCD::rows() {
yueee_yt 0:7766f6712673 156 switch (_type) {
yueee_yt 0:7766f6712673 157 case LCD20x4:
yueee_yt 0:7766f6712673 158 return 4;
yueee_yt 0:7766f6712673 159 case LCD16x2:
yueee_yt 0:7766f6712673 160 case LCD16x2B:
yueee_yt 0:7766f6712673 161 case LCD20x2:
yueee_yt 0:7766f6712673 162 default:
yueee_yt 0:7766f6712673 163 return 2;
yueee_yt 0:7766f6712673 164 }
yueee_yt 0:7766f6712673 165 }
yueee_yt 0:7766f6712673 166