Jay Poddar / Mbed 2 deprecated Mbed_BlackJack

1 player Black jack for mbed

Dependencies:   4DGL-uLCD-SE PinDetect mbed

mpr121.cpp@0:d2e6b3ce6988, 2015-03-12 (annotated)

Committer:
jayvpoddar
Date:
Thu Mar 12 19:48:26 2015 +0000
Revision:
0:d2e6b3ce6988
First push

Who changed what in which revision?

UserRevisionLine numberNew contents of line
jayvpoddar 0:d2e6b3ce6988 1 /*
jayvpoddar 0:d2e6b3ce6988 2 Copyright (c) 2011 Anthony Buckton (abuckton [at] blackink [dot} net {dot} au)
jayvpoddar 0:d2e6b3ce6988 3
jayvpoddar 0:d2e6b3ce6988 4 Permission is hereby granted, free of charge, to any person obtaining a copy
jayvpoddar 0:d2e6b3ce6988 5 of this software and associated documentation files (the "Software"), to deal
jayvpoddar 0:d2e6b3ce6988 6 in the Software without restriction, including without limitation the rights
jayvpoddar 0:d2e6b3ce6988 7 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
jayvpoddar 0:d2e6b3ce6988 8 copies of the Software, and to permit persons to whom the Software is
jayvpoddar 0:d2e6b3ce6988 9 furnished to do so, subject to the following conditions:
jayvpoddar 0:d2e6b3ce6988 10
jayvpoddar 0:d2e6b3ce6988 11 The above copyright notice and this permission notice shall be included in
jayvpoddar 0:d2e6b3ce6988 12 all copies or substantial portions of the Software.
jayvpoddar 0:d2e6b3ce6988 13
jayvpoddar 0:d2e6b3ce6988 14 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
jayvpoddar 0:d2e6b3ce6988 15 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
jayvpoddar 0:d2e6b3ce6988 16 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
jayvpoddar 0:d2e6b3ce6988 17 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
jayvpoddar 0:d2e6b3ce6988 18 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
jayvpoddar 0:d2e6b3ce6988 19 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
jayvpoddar 0:d2e6b3ce6988 20 THE SOFTWARE.
jayvpoddar 0:d2e6b3ce6988 21 */
jayvpoddar 0:d2e6b3ce6988 22
jayvpoddar 0:d2e6b3ce6988 23 #include <mbed.h>
jayvpoddar 0:d2e6b3ce6988 24 #include <sstream>
jayvpoddar 0:d2e6b3ce6988 25 #include <string>
jayvpoddar 0:d2e6b3ce6988 26 #include <list>
jayvpoddar 0:d2e6b3ce6988 27
jayvpoddar 0:d2e6b3ce6988 28 #include <mpr121.h>
jayvpoddar 0:d2e6b3ce6988 29
jayvpoddar 0:d2e6b3ce6988 30 Mpr121::Mpr121(I2C *i2c, Address i2cAddress)
jayvpoddar 0:d2e6b3ce6988 31 {
jayvpoddar 0:d2e6b3ce6988 32 this->i2c = i2c;
jayvpoddar 0:d2e6b3ce6988 33
jayvpoddar 0:d2e6b3ce6988 34 address = i2cAddress;
jayvpoddar 0:d2e6b3ce6988 35
jayvpoddar 0:d2e6b3ce6988 36 // Configure the MPR121 settings to default
jayvpoddar 0:d2e6b3ce6988 37 this->configureSettings();
jayvpoddar 0:d2e6b3ce6988 38 }
jayvpoddar 0:d2e6b3ce6988 39
jayvpoddar 0:d2e6b3ce6988 40
jayvpoddar 0:d2e6b3ce6988 41 void Mpr121::configureSettings()
jayvpoddar 0:d2e6b3ce6988 42 {
jayvpoddar 0:d2e6b3ce6988 43 // Put the MPR into setup mode
jayvpoddar 0:d2e6b3ce6988 44 this->write(ELE_CFG,0x00);
jayvpoddar 0:d2e6b3ce6988 45
jayvpoddar 0:d2e6b3ce6988 46 // Electrode filters for when data is > baseline
jayvpoddar 0:d2e6b3ce6988 47 unsigned char gtBaseline[] = {
jayvpoddar 0:d2e6b3ce6988 48 0x01, //MHD_R
jayvpoddar 0:d2e6b3ce6988 49 0x01, //NHD_R
jayvpoddar 0:d2e6b3ce6988 50 0x00, //NCL_R
jayvpoddar 0:d2e6b3ce6988 51 0x00 //FDL_R
jayvpoddar 0:d2e6b3ce6988 52 };
jayvpoddar 0:d2e6b3ce6988 53
jayvpoddar 0:d2e6b3ce6988 54 writeMany(MHD_R,gtBaseline,4);
jayvpoddar 0:d2e6b3ce6988 55
jayvpoddar 0:d2e6b3ce6988 56 // Electrode filters for when data is < baseline
jayvpoddar 0:d2e6b3ce6988 57 unsigned char ltBaseline[] = {
jayvpoddar 0:d2e6b3ce6988 58 0x01, //MHD_F
jayvpoddar 0:d2e6b3ce6988 59 0x01, //NHD_F
jayvpoddar 0:d2e6b3ce6988 60 0xFF, //NCL_F
jayvpoddar 0:d2e6b3ce6988 61 0x02 //FDL_F
jayvpoddar 0:d2e6b3ce6988 62 };
jayvpoddar 0:d2e6b3ce6988 63
jayvpoddar 0:d2e6b3ce6988 64 writeMany(MHD_F,ltBaseline,4);
jayvpoddar 0:d2e6b3ce6988 65
jayvpoddar 0:d2e6b3ce6988 66 // Electrode touch and release thresholds
jayvpoddar 0:d2e6b3ce6988 67 unsigned char electrodeThresholds[] = {
jayvpoddar 0:d2e6b3ce6988 68 E_THR_T, // Touch Threshhold
jayvpoddar 0:d2e6b3ce6988 69 E_THR_R // Release Threshold
jayvpoddar 0:d2e6b3ce6988 70 };
jayvpoddar 0:d2e6b3ce6988 71
jayvpoddar 0:d2e6b3ce6988 72 for(int i=0; i<12; i++){
jayvpoddar 0:d2e6b3ce6988 73 int result = writeMany((ELE0_T+(i*2)),electrodeThresholds,2);
jayvpoddar 0:d2e6b3ce6988 74 }
jayvpoddar 0:d2e6b3ce6988 75
jayvpoddar 0:d2e6b3ce6988 76 // Proximity Settings
jayvpoddar 0:d2e6b3ce6988 77 unsigned char proximitySettings[] = {
jayvpoddar 0:d2e6b3ce6988 78 0xff, //MHD_Prox_R
jayvpoddar 0:d2e6b3ce6988 79 0xff, //NHD_Prox_R
jayvpoddar 0:d2e6b3ce6988 80 0x00, //NCL_Prox_R
jayvpoddar 0:d2e6b3ce6988 81 0x00, //FDL_Prox_R
jayvpoddar 0:d2e6b3ce6988 82 0x01, //MHD_Prox_F
jayvpoddar 0:d2e6b3ce6988 83 0x01, //NHD_Prox_F
jayvpoddar 0:d2e6b3ce6988 84 0xFF, //NCL_Prox_F
jayvpoddar 0:d2e6b3ce6988 85 0xff, //FDL_Prox_F
jayvpoddar 0:d2e6b3ce6988 86 0x00, //NHD_Prox_T
jayvpoddar 0:d2e6b3ce6988 87 0x00, //NCL_Prox_T
jayvpoddar 0:d2e6b3ce6988 88 0x00 //NFD_Prox_T
jayvpoddar 0:d2e6b3ce6988 89 };
jayvpoddar 0:d2e6b3ce6988 90 writeMany(MHDPROXR,proximitySettings,11);
jayvpoddar 0:d2e6b3ce6988 91
jayvpoddar 0:d2e6b3ce6988 92 unsigned char proxThresh[] = {
jayvpoddar 0:d2e6b3ce6988 93 PROX_THR_T, // Touch Threshold
jayvpoddar 0:d2e6b3ce6988 94 PROX_THR_R // Release Threshold
jayvpoddar 0:d2e6b3ce6988 95 };
jayvpoddar 0:d2e6b3ce6988 96 writeMany(EPROXTTH,proxThresh,2);
jayvpoddar 0:d2e6b3ce6988 97
jayvpoddar 0:d2e6b3ce6988 98 this->write(FIL_CFG,0x04);
jayvpoddar 0:d2e6b3ce6988 99
jayvpoddar 0:d2e6b3ce6988 100 // Set the electrode config to transition to active mode
jayvpoddar 0:d2e6b3ce6988 101 this->write(ELE_CFG,0x0c);
jayvpoddar 0:d2e6b3ce6988 102 }
jayvpoddar 0:d2e6b3ce6988 103
jayvpoddar 0:d2e6b3ce6988 104 void Mpr121::setElectrodeThreshold(int electrode, unsigned char touch, unsigned char release){
jayvpoddar 0:d2e6b3ce6988 105
jayvpoddar 0:d2e6b3ce6988 106 if(electrode > 11) return;
jayvpoddar 0:d2e6b3ce6988 107
jayvpoddar 0:d2e6b3ce6988 108 // Get the current mode
jayvpoddar 0:d2e6b3ce6988 109 unsigned char mode = this->read(ELE_CFG);
jayvpoddar 0:d2e6b3ce6988 110
jayvpoddar 0:d2e6b3ce6988 111 // Put the MPR into setup mode
jayvpoddar 0:d2e6b3ce6988 112 this->write(ELE_CFG,0x00);
jayvpoddar 0:d2e6b3ce6988 113
jayvpoddar 0:d2e6b3ce6988 114 // Write the new threshold
jayvpoddar 0:d2e6b3ce6988 115 this->write((ELE0_T+(electrode*2)), touch);
jayvpoddar 0:d2e6b3ce6988 116 this->write((ELE0_T+(electrode*2)+1), release);
jayvpoddar 0:d2e6b3ce6988 117
jayvpoddar 0:d2e6b3ce6988 118 //Restore the operating mode
jayvpoddar 0:d2e6b3ce6988 119 this->write(ELE_CFG, mode);
jayvpoddar 0:d2e6b3ce6988 120 }
jayvpoddar 0:d2e6b3ce6988 121
jayvpoddar 0:d2e6b3ce6988 122
jayvpoddar 0:d2e6b3ce6988 123 unsigned char Mpr121::read(int key){
jayvpoddar 0:d2e6b3ce6988 124
jayvpoddar 0:d2e6b3ce6988 125 unsigned char data[2];
jayvpoddar 0:d2e6b3ce6988 126
jayvpoddar 0:d2e6b3ce6988 127 //Start the command
jayvpoddar 0:d2e6b3ce6988 128 i2c->start();
jayvpoddar 0:d2e6b3ce6988 129
jayvpoddar 0:d2e6b3ce6988 130 // Address the target (Write mode)
jayvpoddar 0:d2e6b3ce6988 131 int ack1= i2c->write(address);
jayvpoddar 0:d2e6b3ce6988 132
jayvpoddar 0:d2e6b3ce6988 133 // Set the register key to read
jayvpoddar 0:d2e6b3ce6988 134 int ack2 = i2c->write(key);
jayvpoddar 0:d2e6b3ce6988 135
jayvpoddar 0:d2e6b3ce6988 136 // Re-start for read of data
jayvpoddar 0:d2e6b3ce6988 137 i2c->start();
jayvpoddar 0:d2e6b3ce6988 138
jayvpoddar 0:d2e6b3ce6988 139 // Re-send the target address in read mode
jayvpoddar 0:d2e6b3ce6988 140 int ack3 = i2c->write(address+1);
jayvpoddar 0:d2e6b3ce6988 141
jayvpoddar 0:d2e6b3ce6988 142 // Read in the result
jayvpoddar 0:d2e6b3ce6988 143 data[0] = i2c->read(0);
jayvpoddar 0:d2e6b3ce6988 144
jayvpoddar 0:d2e6b3ce6988 145 // Reset the bus
jayvpoddar 0:d2e6b3ce6988 146 i2c->stop();
jayvpoddar 0:d2e6b3ce6988 147
jayvpoddar 0:d2e6b3ce6988 148 return data[0];
jayvpoddar 0:d2e6b3ce6988 149 }
jayvpoddar 0:d2e6b3ce6988 150
jayvpoddar 0:d2e6b3ce6988 151
jayvpoddar 0:d2e6b3ce6988 152 int Mpr121::write(int key, unsigned char value){
jayvpoddar 0:d2e6b3ce6988 153
jayvpoddar 0:d2e6b3ce6988 154 //Start the command
jayvpoddar 0:d2e6b3ce6988 155 i2c->start();
jayvpoddar 0:d2e6b3ce6988 156
jayvpoddar 0:d2e6b3ce6988 157 // Address the target (Write mode)
jayvpoddar 0:d2e6b3ce6988 158 int ack1= i2c->write(address);
jayvpoddar 0:d2e6b3ce6988 159
jayvpoddar 0:d2e6b3ce6988 160 // Set the register key to write
jayvpoddar 0:d2e6b3ce6988 161 int ack2 = i2c->write(key);
jayvpoddar 0:d2e6b3ce6988 162
jayvpoddar 0:d2e6b3ce6988 163 // Read in the result
jayvpoddar 0:d2e6b3ce6988 164 int ack3 = i2c->write(value);
jayvpoddar 0:d2e6b3ce6988 165
jayvpoddar 0:d2e6b3ce6988 166 // Reset the bus
jayvpoddar 0:d2e6b3ce6988 167 i2c->stop();
jayvpoddar 0:d2e6b3ce6988 168
jayvpoddar 0:d2e6b3ce6988 169 return (ack1+ack2+ack3)-3;
jayvpoddar 0:d2e6b3ce6988 170 }
jayvpoddar 0:d2e6b3ce6988 171
jayvpoddar 0:d2e6b3ce6988 172
jayvpoddar 0:d2e6b3ce6988 173 int Mpr121::writeMany(int start, unsigned char* dataSet, int length){
jayvpoddar 0:d2e6b3ce6988 174 //Start the command
jayvpoddar 0:d2e6b3ce6988 175 i2c->start();
jayvpoddar 0:d2e6b3ce6988 176
jayvpoddar 0:d2e6b3ce6988 177 // Address the target (Write mode)
jayvpoddar 0:d2e6b3ce6988 178 int ack= i2c->write(address);
jayvpoddar 0:d2e6b3ce6988 179 if(ack!=1){
jayvpoddar 0:d2e6b3ce6988 180 return -1;
jayvpoddar 0:d2e6b3ce6988 181 }
jayvpoddar 0:d2e6b3ce6988 182
jayvpoddar 0:d2e6b3ce6988 183 // Set the register key to write
jayvpoddar 0:d2e6b3ce6988 184 ack = i2c->write(start);
jayvpoddar 0:d2e6b3ce6988 185 if(ack!=1){
jayvpoddar 0:d2e6b3ce6988 186 return -1;
jayvpoddar 0:d2e6b3ce6988 187 }
jayvpoddar 0:d2e6b3ce6988 188
jayvpoddar 0:d2e6b3ce6988 189 // Write the date set
jayvpoddar 0:d2e6b3ce6988 190 int count = 0;
jayvpoddar 0:d2e6b3ce6988 191 while(ack==1 && (count < length)){
jayvpoddar 0:d2e6b3ce6988 192 ack = i2c->write(dataSet[count]);
jayvpoddar 0:d2e6b3ce6988 193 count++;
jayvpoddar 0:d2e6b3ce6988 194 }
jayvpoddar 0:d2e6b3ce6988 195 // Stop the cmd
jayvpoddar 0:d2e6b3ce6988 196 i2c->stop();
jayvpoddar 0:d2e6b3ce6988 197
jayvpoddar 0:d2e6b3ce6988 198 return count;
jayvpoddar 0:d2e6b3ce6988 199 }
jayvpoddar 0:d2e6b3ce6988 200
jayvpoddar 0:d2e6b3ce6988 201
jayvpoddar 0:d2e6b3ce6988 202 bool Mpr121::getProximityMode(){
jayvpoddar 0:d2e6b3ce6988 203 if(this->read(ELE_CFG) > 0x0c)
jayvpoddar 0:d2e6b3ce6988 204 return true;
jayvpoddar 0:d2e6b3ce6988 205 else
jayvpoddar 0:d2e6b3ce6988 206 return false;
jayvpoddar 0:d2e6b3ce6988 207 }
jayvpoddar 0:d2e6b3ce6988 208
jayvpoddar 0:d2e6b3ce6988 209 void Mpr121::setProximityMode(bool mode){
jayvpoddar 0:d2e6b3ce6988 210 this->write(ELE_CFG,0x00);
jayvpoddar 0:d2e6b3ce6988 211 if(mode){
jayvpoddar 0:d2e6b3ce6988 212 this->write(ELE_CFG,0x30); //Sense proximity from ALL pads
jayvpoddar 0:d2e6b3ce6988 213 } else {
jayvpoddar 0:d2e6b3ce6988 214 this->write(ELE_CFG,0x0c); //Sense touch, all 12 pads active.
jayvpoddar 0:d2e6b3ce6988 215 }
jayvpoddar 0:d2e6b3ce6988 216 }
jayvpoddar 0:d2e6b3ce6988 217
jayvpoddar 0:d2e6b3ce6988 218
jayvpoddar 0:d2e6b3ce6988 219 int Mpr121::readTouchData(){
jayvpoddar 0:d2e6b3ce6988 220 return this->read(0x00);
jayvpoddar 0:d2e6b3ce6988 221 }