Paul van der Wielen / Mbed 2 deprecated Reflow_Oven_Controller

based on existing code, added support for max31855 and i2c display

Dependencies:   MAX31855 mbed

lc_display.h@2:67c271b56755, 2014-01-19 (annotated)

Committer:
pwheels
Date:
Sun Jan 19 14:09:22 2014 +0000
Revision:
2:67c271b56755
Parent:
0:1f9875adab5d 
update on display coding

Who changed what in which revision?

UserRevisionLine numberNew contents of line
pwheels 0:1f9875adab5d 1 /*
pwheels 0:1f9875adab5d 2 * Copyright (c) 2011 Paul van der Wielen, Pro-Serv
pwheels 0:1f9875adab5d 3 *
pwheels 0:1f9875adab5d 4 * Permission is hereby granted, free of charge, to any person obtaining a copy
pwheels 0:1f9875adab5d 5 * of this software and associated documentation files (the "Software"), to use
pwheels 0:1f9875adab5d 6 * and implement the software for none commercial reason and usage only and
pwheels 0:1f9875adab5d 7 * subject to the following conditions:
pwheels 0:1f9875adab5d 8 *
pwheels 0:1f9875adab5d 9 * The above copyright notice and this permission notice shall be included in
pwheels 0:1f9875adab5d 10 * all copies or substantial portions of the Software.
pwheels 0:1f9875adab5d 11 *
pwheels 0:1f9875adab5d 12 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
pwheels 0:1f9875adab5d 13 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
pwheels 0:1f9875adab5d 14 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
pwheels 0:1f9875adab5d 15 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
pwheels 0:1f9875adab5d 16 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
pwheels 0:1f9875adab5d 17 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
pwheels 0:1f9875adab5d 18 * THE SOFTWARE.
pwheels 0:1f9875adab5d 19 *
pwheels 0:1f9875adab5d 20 * Usage and assumptions:
pwheels 0:1f9875adab5d 21 * coding as to interface an I2C LC Display modle available from:
pwheels 0:1f9875adab5d 22 * Coptonix GmbH
pwheels 0:1f9875adab5d 23 * Berlin 24.06.2008by @ less than Euro 13.-
pwheels 0:1f9875adab5d 24 * which will interface to various HD44780 based units, 8Bit-Interface (16x2 or 20x4)
pwheels 0:1f9875adab5d 25 *
pwheels 0:1f9875adab5d 26 * Used device = LPC1768
pwheels 0:1f9875adab5d 27 */
pwheels 0:1f9875adab5d 28 #include "mbed.h"
pwheels 0:1f9875adab5d 29
pwheels 0:1f9875adab5d 30 #define I2C_ADDR 0xfe
pwheels 0:1f9875adab5d 31 #define I2C_SPEED 400000
pwheels 0:1f9875adab5d 32
pwheels 0:1f9875adab5d 33 #define ClrDisplay 0x61
pwheels 0:1f9875adab5d 34 #define ReturnHome 0x62
pwheels 0:1f9875adab5d 35 #define SetCursor 0x63
pwheels 0:1f9875adab5d 36 #define CharToLCD 0x64
pwheels 0:1f9875adab5d 37 #define CMDToLCD 0x65
pwheels 0:1f9875adab5d 38 #define Delete 0x66
pwheels 0:1f9875adab5d 39 #define CopyToClipBoard 0x67
pwheels 0:1f9875adab5d 40 #define Paste 0x68
pwheels 0:1f9875adab5d 41 #define GetCursorAdr 0x69
pwheels 0:1f9875adab5d 42 #define GetCharAtCur 0x6a
pwheels 0:1f9875adab5d 43 #define ReadRam 0x6b
pwheels 0:1f9875adab5d 44 #define DisplayON_OFF 0x6c
pwheels 0:1f9875adab5d 45 #define Shift 0x6d
pwheels 0:1f9875adab5d 46 #define SetEntryMode 0x6e
pwheels 0:1f9875adab5d 47 #define SetFunction 0x6f
pwheels 0:1f9875adab5d 48 #define SetCGRAMAdr 0x70
pwheels 0:1f9875adab5d 49 #define SetGGRAMAdr 0x71
pwheels 0:1f9875adab5d 50 #define SaveLCDIni 0x73
pwheels 0:1f9875adab5d 51 #define WriteUserDefChar 0x74
pwheels 0:1f9875adab5d 52 #define SaveUserDefChr 0x75
pwheels 0:1f9875adab5d 53 #define WriteString 0x76
pwheels 0:1f9875adab5d 54 #define LCDType 0x77
pwheels 0:1f9875adab5d 55
pwheels 0:1f9875adab5d 56 I2C i2c(p28, p27);
pwheels 0:1f9875adab5d 57
pwheels 0:1f9875adab5d 58 void _InitLCD();
pwheels 0:1f9875adab5d 59 int _ReadLCD(int Cmd);
pwheels 0:1f9875adab5d 60 void _WriteLCD(int Cmd, int par1, int par2, int par3);
pwheels 0:1f9875adab5d 61 void _WriteLCD(int Cmd, int par1, int par2);
pwheels 0:1f9875adab5d 62 void _WriteLCD(int Cmd, int par1);
pwheels 0:1f9875adab5d 63 void _WriteLCD(int Cmd);
pwheels 0:1f9875adab5d 64 void _WriteLCD(int Cmd, char *par1, int par2);
pwheels 0:1f9875adab5d 65
pwheels 0:1f9875adab5d 66 void _InitLCD() {
pwheels 0:1f9875adab5d 67 i2c.frequency(I2C_SPEED);
pwheels 0:1f9875adab5d 68 }
pwheels 0:1f9875adab5d 69
pwheels 0:1f9875adab5d 70 int _ReadLCD(int Cmd) {
pwheels 0:1f9875adab5d 71
pwheels 0:1f9875adab5d 72 int j = 50;
pwheels 0:1f9875adab5d 73
pwheels 0:1f9875adab5d 74 char data[2];
pwheels 0:1f9875adab5d 75 i2c.start();
pwheels 0:1f9875adab5d 76 i2c.write(I2C_ADDR);
pwheels 0:1f9875adab5d 77 i2c.write(Cmd & 0xff);
pwheels 0:1f9875adab5d 78 i2c.read(I2C_ADDR, data, 2);
pwheels 0:1f9875adab5d 79 i2c.stop();
pwheels 0:1f9875adab5d 80 wait_us(j);
pwheels 0:1f9875adab5d 81 return data[1];
pwheels 0:1f9875adab5d 82 }
pwheels 0:1f9875adab5d 83
pwheels 0:1f9875adab5d 84 void _WriteLCD(int Cmd, int par1, int par2, int par3) {
pwheels 0:1f9875adab5d 85
pwheels 0:1f9875adab5d 86 int j = 50;
pwheels 0:1f9875adab5d 87
pwheels 0:1f9875adab5d 88 i2c.start();
pwheels 0:1f9875adab5d 89 i2c.write(I2C_ADDR);
pwheels 0:1f9875adab5d 90 i2c.write(Cmd & 0xff); // Set Command
pwheels 0:1f9875adab5d 91 switch (Cmd) {
pwheels 0:1f9875adab5d 92 case DisplayON_OFF :
pwheels 0:1f9875adab5d 93 i2c.write(0x08 + ((par1 & 0x01) << 2) + ((par2 & 0x01) << 1) + (par3 & 0x01)); // 0x00/0x01 for display, cursor and blinking
pwheels 0:1f9875adab5d 94 break;
pwheels 0:1f9875adab5d 95 case SetFunction :
pwheels 0:1f9875adab5d 96 i2c.write(0x20 + ((par1 & 0x01) << 4) + ((par2 & 0x01) << 3) + ((par3 & 0x01) << 2)); // 0x00/0x01 for interface, lines and dots
pwheels 0:1f9875adab5d 97 break;
pwheels 0:1f9875adab5d 98 case Delete :
pwheels 0:1f9875adab5d 99 j = 1000;
pwheels 0:1f9875adab5d 100 case CopyToClipBoard :
pwheels 0:1f9875adab5d 101 i2c.write(par1); // line 1-4
pwheels 0:1f9875adab5d 102 i2c.write(par2); // position 1-20
pwheels 0:1f9875adab5d 103 i2c.write(par3); // count 1-20
pwheels 0:1f9875adab5d 104 break;
pwheels 0:1f9875adab5d 105 default :
pwheels 0:1f9875adab5d 106 break;
pwheels 0:1f9875adab5d 107 }
pwheels 0:1f9875adab5d 108
pwheels 0:1f9875adab5d 109 i2c.stop();
pwheels 0:1f9875adab5d 110 wait_us(j);
pwheels 0:1f9875adab5d 111 }
pwheels 0:1f9875adab5d 112
pwheels 0:1f9875adab5d 113 void _WriteLCD(int Cmd, int par1, int par2) {
pwheels 0:1f9875adab5d 114
pwheels 0:1f9875adab5d 115 int j = 50;
pwheels 0:1f9875adab5d 116
pwheels 0:1f9875adab5d 117 i2c.start();
pwheels 0:1f9875adab5d 118 i2c.write(I2C_ADDR);
pwheels 0:1f9875adab5d 119 i2c.write(Cmd & 0xff); // Set Command
pwheels 0:1f9875adab5d 120 switch (Cmd) {
pwheels 0:1f9875adab5d 121 case Shift :
pwheels 0:1f9875adab5d 122 i2c.write(0x10 + ((par1 & 0x01) << 3) + ((par2 & 0x01) << 2)); // 0x00/0x01 cursor or display, 0x00/0x01 left or right
pwheels 0:1f9875adab5d 123 break;
pwheels 0:1f9875adab5d 124 case SetEntryMode :
pwheels 0:1f9875adab5d 125 i2c.write(0x04 + ((par1 & 0x01) << 1) + (par2 & 0x01)); // 0x00/0x01 for cursor move (increase / decrease), display (shifted / not shifted)
pwheels 0:1f9875adab5d 126 break;
pwheels 0:1f9875adab5d 127 default :
pwheels 0:1f9875adab5d 128 break;
pwheels 0:1f9875adab5d 129 }
pwheels 0:1f9875adab5d 130
pwheels 0:1f9875adab5d 131 i2c.stop();
pwheels 0:1f9875adab5d 132 wait_us(j);
pwheels 0:1f9875adab5d 133 }
pwheels 0:1f9875adab5d 134
pwheels 0:1f9875adab5d 135 void _WriteLCD(int Cmd, int par1) {
pwheels 0:1f9875adab5d 136
pwheels 0:1f9875adab5d 137 int j = 50;
pwheels 0:1f9875adab5d 138
pwheels 0:1f9875adab5d 139 i2c.start();
pwheels 0:1f9875adab5d 140 i2c.write(I2C_ADDR);
pwheels 0:1f9875adab5d 141 i2c.write(Cmd & 0xff); // Set Command
pwheels 0:1f9875adab5d 142 switch (Cmd) {
pwheels 0:1f9875adab5d 143 case SetCursor :
pwheels 0:1f9875adab5d 144 j = 500;
pwheels 0:1f9875adab5d 145 case CharToLCD :
pwheels 0:1f9875adab5d 146 case CMDToLCD :
pwheels 0:1f9875adab5d 147 case SetCGRAMAdr :
pwheels 0:1f9875adab5d 148 case SetGGRAMAdr :
pwheels 0:1f9875adab5d 149 i2c.write(par1 & 0xff); // Put character at cursor position
pwheels 0:1f9875adab5d 150 break;
pwheels 0:1f9875adab5d 151 case SaveUserDefChr :
pwheels 0:1f9875adab5d 152 i2c.write(par1 & 0x07); // Save user defined character 0-7
pwheels 0:1f9875adab5d 153 break;
pwheels 0:1f9875adab5d 154 case LCDType :
pwheels 0:1f9875adab5d 155 i2c.write(par1 & 0x01); // set LCD type 0 = 4 x 16, 1 = 2 x 20
pwheels 0:1f9875adab5d 156 break;
pwheels 0:1f9875adab5d 157 default :
pwheels 0:1f9875adab5d 158 break;
pwheels 0:1f9875adab5d 159 }
pwheels 0:1f9875adab5d 160
pwheels 0:1f9875adab5d 161 i2c.stop();
pwheels 0:1f9875adab5d 162 wait_us(j);
pwheels 0:1f9875adab5d 163 }
pwheels 0:1f9875adab5d 164
pwheels 0:1f9875adab5d 165 void _WriteLCD(int Cmd) {
pwheels 0:1f9875adab5d 166
pwheels 0:1f9875adab5d 167 int j = 50;
pwheels 0:1f9875adab5d 168
pwheels 0:1f9875adab5d 169 i2c.start();
pwheels 0:1f9875adab5d 170 i2c.write(I2C_ADDR);
pwheels 0:1f9875adab5d 171 i2c.write(Cmd & 0xff); // Set Command
pwheels 0:1f9875adab5d 172 switch (Cmd) {
pwheels 0:1f9875adab5d 173 case ClrDisplay :
pwheels 0:1f9875adab5d 174 j = 2000;
pwheels 0:1f9875adab5d 175 break;
pwheels 0:1f9875adab5d 176 default :
pwheels 0:1f9875adab5d 177 break;
pwheels 0:1f9875adab5d 178 }
pwheels 0:1f9875adab5d 179 i2c.stop();
pwheels 0:1f9875adab5d 180 wait_us(j);
pwheels 0:1f9875adab5d 181 }
pwheels 0:1f9875adab5d 182
pwheels 0:1f9875adab5d 183 void _WriteLCD(int Cmd, char *par1, int par2) {
pwheels 2:67c271b56755 184 // par2 != 0 -> use par2 else actual length of string
pwheels 0:1f9875adab5d 185 int i;
pwheels 0:1f9875adab5d 186 int j = 1000;
pwheels 0:1f9875adab5d 187
pwheels 0:1f9875adab5d 188 i2c.start();
pwheels 0:1f9875adab5d 189 i2c.write(I2C_ADDR);
pwheels 0:1f9875adab5d 190 i2c.write(Cmd & 0xff); // Set Command
pwheels 2:67c271b56755 191 for (i = 0; i < (par2 != 0) ? par2 : strlen(par1); i++) {
pwheels 0:1f9875adab5d 192 i2c.write(par1[i]);
pwheels 0:1f9875adab5d 193 }
pwheels 0:1f9875adab5d 194 i2c.stop();
pwheels 0:1f9875adab5d 195 wait_us(j);
pwheels 0:1f9875adab5d 196 }