eka sinambela / Mbed 2 deprecated mbed_stepper_motors

stepper mottor for pumps

Dependencies:   mbed

TextLCD.cpp@1:8431b042a2eb, 2016-06-19 (annotated)

Committer:
ekasinambela
Date:
Sun Jun 19 21:32:08 2016 +0000
Revision:
1:8431b042a2eb
modify stepper motor

Who changed what in which revision?

UserRevisionLine numberNew contents of line
ekasinambela 1:8431b042a2eb 1 /* mbed TextLCD Library, for a 4-bit LCD based on HD44780
ekasinambela 1:8431b042a2eb 2 * Copyright (c) 2007-2010, sford, http://mbed.org
ekasinambela 1:8431b042a2eb 3 *
ekasinambela 1:8431b042a2eb 4 * Permission is hereby granted, free of charge, to any person obtaining a copy
ekasinambela 1:8431b042a2eb 5 * of this software and associated documentation files (the "Software"), to deal
ekasinambela 1:8431b042a2eb 6 * in the Software without restriction, including without limitation the rights
ekasinambela 1:8431b042a2eb 7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
ekasinambela 1:8431b042a2eb 8 * copies of the Software, and to permit persons to whom the Software is
ekasinambela 1:8431b042a2eb 9 * furnished to do so, subject to the following conditions:
ekasinambela 1:8431b042a2eb 10 *
ekasinambela 1:8431b042a2eb 11 * The above copyright notice and this permission notice shall be included in
ekasinambela 1:8431b042a2eb 12 * all copies or substantial portions of the Software.
ekasinambela 1:8431b042a2eb 13 *
ekasinambela 1:8431b042a2eb 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
ekasinambela 1:8431b042a2eb 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
ekasinambela 1:8431b042a2eb 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
ekasinambela 1:8431b042a2eb 17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
ekasinambela 1:8431b042a2eb 18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
ekasinambela 1:8431b042a2eb 19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
ekasinambela 1:8431b042a2eb 20 * THE SOFTWARE.
ekasinambela 1:8431b042a2eb 21 */
ekasinambela 1:8431b042a2eb 22
ekasinambela 1:8431b042a2eb 23 #include "TextLCD.h"
ekasinambela 1:8431b042a2eb 24 #include "mbed.h"
ekasinambela 1:8431b042a2eb 25
ekasinambela 1:8431b042a2eb 26 TextLCD::TextLCD(PinName rs, PinName e, PinName d4, PinName d5,
ekasinambela 1:8431b042a2eb 27 PinName d6, PinName d7, LCDType type) : _rs(rs),
ekasinambela 1:8431b042a2eb 28 _e(e), _d(d4, d5, d6, d7),
ekasinambela 1:8431b042a2eb 29 _type(type) {
ekasinambela 1:8431b042a2eb 30
ekasinambela 1:8431b042a2eb 31 _e = 1;
ekasinambela 1:8431b042a2eb 32 _rs = 0; // command mode
ekasinambela 1:8431b042a2eb 33
ekasinambela 1:8431b042a2eb 34 wait(0.015); // Wait 15ms to ensure powered up
ekasinambela 1:8431b042a2eb 35
ekasinambela 1:8431b042a2eb 36 // send "Display Settings" 3 times (Only top nibble of 0x30 as we've got 4-bit bus)
ekasinambela 1:8431b042a2eb 37 for (int i=0; i<3; i++) {
ekasinambela 1:8431b042a2eb 38 writeByte(0x3);
ekasinambela 1:8431b042a2eb 39 wait(0.00164); // this command takes 1.64ms, so wait for it
ekasinambela 1:8431b042a2eb 40 }
ekasinambela 1:8431b042a2eb 41 writeByte(0x2); // 4-bit mode
ekasinambela 1:8431b042a2eb 42 wait(0.000040f); // most instructions take 40us
ekasinambela 1:8431b042a2eb 43
ekasinambela 1:8431b042a2eb 44 writeCommand(0x28); // Function set 001 BW N F - -
ekasinambela 1:8431b042a2eb 45 writeCommand(0x0C);
ekasinambela 1:8431b042a2eb 46 writeCommand(0x6); // Cursor Direction and Display Shift : 0000 01 CD S (CD 0-left, 1-right S(hift) 0-no, 1-yes
ekasinambela 1:8431b042a2eb 47 cls();
ekasinambela 1:8431b042a2eb 48 }
ekasinambela 1:8431b042a2eb 49
ekasinambela 1:8431b042a2eb 50 void TextLCD::character(int column, int row, int c) {
ekasinambela 1:8431b042a2eb 51 int a = address(column, row);
ekasinambela 1:8431b042a2eb 52 writeCommand(a);
ekasinambela 1:8431b042a2eb 53 writeData(c);
ekasinambela 1:8431b042a2eb 54 }
ekasinambela 1:8431b042a2eb 55
ekasinambela 1:8431b042a2eb 56 void TextLCD::cls() {
ekasinambela 1:8431b042a2eb 57 writeCommand(0x01); // cls, and set cursor to 0
ekasinambela 1:8431b042a2eb 58 wait(0.00164f); // This command takes 1.64 ms
ekasinambela 1:8431b042a2eb 59 locate(0, 0);
ekasinambela 1:8431b042a2eb 60 }
ekasinambela 1:8431b042a2eb 61
ekasinambela 1:8431b042a2eb 62 void TextLCD::locate(int column, int row) {
ekasinambela 1:8431b042a2eb 63 _column = column;
ekasinambela 1:8431b042a2eb 64 _row = row;
ekasinambela 1:8431b042a2eb 65 }
ekasinambela 1:8431b042a2eb 66
ekasinambela 1:8431b042a2eb 67 int TextLCD::_putc(int value) {
ekasinambela 1:8431b042a2eb 68 if (value == '\n') {
ekasinambela 1:8431b042a2eb 69 _column = 0;
ekasinambela 1:8431b042a2eb 70 _row++;
ekasinambela 1:8431b042a2eb 71 if (_row >= rows()) {
ekasinambela 1:8431b042a2eb 72 _row = 0;
ekasinambela 1:8431b042a2eb 73 }
ekasinambela 1:8431b042a2eb 74 } else {
ekasinambela 1:8431b042a2eb 75 character(_column, _row, value);
ekasinambela 1:8431b042a2eb 76 _column++;
ekasinambela 1:8431b042a2eb 77 if (_column >= columns()) {
ekasinambela 1:8431b042a2eb 78 _column = 0;
ekasinambela 1:8431b042a2eb 79 _row++;
ekasinambela 1:8431b042a2eb 80 if (_row >= rows()) {
ekasinambela 1:8431b042a2eb 81 _row = 0;
ekasinambela 1:8431b042a2eb 82 }
ekasinambela 1:8431b042a2eb 83 }
ekasinambela 1:8431b042a2eb 84 }
ekasinambela 1:8431b042a2eb 85 return value;
ekasinambela 1:8431b042a2eb 86 }
ekasinambela 1:8431b042a2eb 87
ekasinambela 1:8431b042a2eb 88 int TextLCD::_getc() {
ekasinambela 1:8431b042a2eb 89 return -1;
ekasinambela 1:8431b042a2eb 90 }
ekasinambela 1:8431b042a2eb 91
ekasinambela 1:8431b042a2eb 92 void TextLCD::writeByte(int value) {
ekasinambela 1:8431b042a2eb 93 _d = value >> 4;
ekasinambela 1:8431b042a2eb 94 wait(0.000040f); // most instructions take 40us
ekasinambela 1:8431b042a2eb 95 _e = 0;
ekasinambela 1:8431b042a2eb 96 wait(0.000040f);
ekasinambela 1:8431b042a2eb 97 _e = 1;
ekasinambela 1:8431b042a2eb 98 _d = value >> 0;
ekasinambela 1:8431b042a2eb 99 wait(0.000040f);
ekasinambela 1:8431b042a2eb 100 _e = 0;
ekasinambela 1:8431b042a2eb 101 wait(0.000040f); // most instructions take 40us
ekasinambela 1:8431b042a2eb 102 _e = 1;
ekasinambela 1:8431b042a2eb 103 }
ekasinambela 1:8431b042a2eb 104
ekasinambela 1:8431b042a2eb 105 void TextLCD::writeCommand(int command) {
ekasinambela 1:8431b042a2eb 106 _rs = 0;
ekasinambela 1:8431b042a2eb 107 writeByte(command);
ekasinambela 1:8431b042a2eb 108 }
ekasinambela 1:8431b042a2eb 109
ekasinambela 1:8431b042a2eb 110 void TextLCD::writeData(int data) {
ekasinambela 1:8431b042a2eb 111 _rs = 1;
ekasinambela 1:8431b042a2eb 112 writeByte(data);
ekasinambela 1:8431b042a2eb 113 }
ekasinambela 1:8431b042a2eb 114
ekasinambela 1:8431b042a2eb 115 int TextLCD::address(int column, int row) {
ekasinambela 1:8431b042a2eb 116 switch (_type) {
ekasinambela 1:8431b042a2eb 117 case LCD20x4:
ekasinambela 1:8431b042a2eb 118 switch (row) {
ekasinambela 1:8431b042a2eb 119 case 0:
ekasinambela 1:8431b042a2eb 120 return 0x80 + column;
ekasinambela 1:8431b042a2eb 121 case 1:
ekasinambela 1:8431b042a2eb 122 return 0xc0 + column;
ekasinambela 1:8431b042a2eb 123 case 2:
ekasinambela 1:8431b042a2eb 124 return 0x94 + column;
ekasinambela 1:8431b042a2eb 125 case 3:
ekasinambela 1:8431b042a2eb 126 return 0xd4 + column;
ekasinambela 1:8431b042a2eb 127 }
ekasinambela 1:8431b042a2eb 128 case LCD16x2B:
ekasinambela 1:8431b042a2eb 129 return 0x80 + (row * 40) + column;
ekasinambela 1:8431b042a2eb 130 case LCD16x2:
ekasinambela 1:8431b042a2eb 131 case LCD20x2:
ekasinambela 1:8431b042a2eb 132 default:
ekasinambela 1:8431b042a2eb 133 return 0x80 + (row * 0x40) + column;
ekasinambela 1:8431b042a2eb 134 }
ekasinambela 1:8431b042a2eb 135 }
ekasinambela 1:8431b042a2eb 136
ekasinambela 1:8431b042a2eb 137 int TextLCD::columns() {
ekasinambela 1:8431b042a2eb 138 switch (_type) {
ekasinambela 1:8431b042a2eb 139 case LCD20x4:
ekasinambela 1:8431b042a2eb 140 case LCD20x2:
ekasinambela 1:8431b042a2eb 141 return 20;
ekasinambela 1:8431b042a2eb 142 case LCD16x2:
ekasinambela 1:8431b042a2eb 143 case LCD16x2B:
ekasinambela 1:8431b042a2eb 144 default:
ekasinambela 1:8431b042a2eb 145 return 16;
ekasinambela 1:8431b042a2eb 146 }
ekasinambela 1:8431b042a2eb 147 }
ekasinambela 1:8431b042a2eb 148
ekasinambela 1:8431b042a2eb 149 int TextLCD::rows() {
ekasinambela 1:8431b042a2eb 150 switch (_type) {
ekasinambela 1:8431b042a2eb 151 case LCD20x4:
ekasinambela 1:8431b042a2eb 152 return 4;
ekasinambela 1:8431b042a2eb 153 case LCD16x2:
ekasinambela 1:8431b042a2eb 154 case LCD16x2B:
ekasinambela 1:8431b042a2eb 155 case LCD20x2:
ekasinambela 1:8431b042a2eb 156 default:
ekasinambela 1:8431b042a2eb 157 return 2;
ekasinambela 1:8431b042a2eb 158 }
ekasinambela 1:8431b042a2eb 159 }