Jordan Melliadis / Mbed 2 deprecated mbedDDR

1st half of mbed DDR game

Dependencies:   4DGL-uLCD-SE PinDetect mbed

mpr121.cpp@0:5a54aaccd065, 2014-04-29 (annotated)

Committer:
jmelliadis3
Date:
Tue Apr 29 23:24:46 2014 +0000
Revision:
0:5a54aaccd065
To put on primary mbed

Who changed what in which revision?

UserRevisionLine numberNew contents of line
jmelliadis3 0:5a54aaccd065 1 /*
jmelliadis3 0:5a54aaccd065 2 Copyright (c) 2011 Anthony Buckton (abuckton [at] blackink [dot} net {dot} au)
jmelliadis3 0:5a54aaccd065 3
jmelliadis3 0:5a54aaccd065 4 Permission is hereby granted, free of charge, to any person obtaining a copy
jmelliadis3 0:5a54aaccd065 5 of this software and associated documentation files (the "Software"), to deal
jmelliadis3 0:5a54aaccd065 6 in the Software without restriction, including without limitation the rights
jmelliadis3 0:5a54aaccd065 7 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
jmelliadis3 0:5a54aaccd065 8 copies of the Software, and to permit persons to whom the Software is
jmelliadis3 0:5a54aaccd065 9 furnished to do so, subject to the following conditions:
jmelliadis3 0:5a54aaccd065 10
jmelliadis3 0:5a54aaccd065 11 The above copyright notice and this permission notice shall be included in
jmelliadis3 0:5a54aaccd065 12 all copies or substantial portions of the Software.
jmelliadis3 0:5a54aaccd065 13
jmelliadis3 0:5a54aaccd065 14 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
jmelliadis3 0:5a54aaccd065 15 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
jmelliadis3 0:5a54aaccd065 16 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
jmelliadis3 0:5a54aaccd065 17 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
jmelliadis3 0:5a54aaccd065 18 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
jmelliadis3 0:5a54aaccd065 19 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
jmelliadis3 0:5a54aaccd065 20 THE SOFTWARE.
jmelliadis3 0:5a54aaccd065 21 */
jmelliadis3 0:5a54aaccd065 22
jmelliadis3 0:5a54aaccd065 23 #include <mbed.h>
jmelliadis3 0:5a54aaccd065 24 #include <sstream>
jmelliadis3 0:5a54aaccd065 25 #include <string>
jmelliadis3 0:5a54aaccd065 26 #include <list>
jmelliadis3 0:5a54aaccd065 27
jmelliadis3 0:5a54aaccd065 28 #include <mpr121.h>
jmelliadis3 0:5a54aaccd065 29
jmelliadis3 0:5a54aaccd065 30 Mpr121::Mpr121(I2C *i2c, Address i2cAddress)
jmelliadis3 0:5a54aaccd065 31 {
jmelliadis3 0:5a54aaccd065 32 this->i2c = i2c;
jmelliadis3 0:5a54aaccd065 33
jmelliadis3 0:5a54aaccd065 34 address = i2cAddress;
jmelliadis3 0:5a54aaccd065 35
jmelliadis3 0:5a54aaccd065 36 // Configure the MPR121 settings to default
jmelliadis3 0:5a54aaccd065 37 this->configureSettings();
jmelliadis3 0:5a54aaccd065 38 }
jmelliadis3 0:5a54aaccd065 39
jmelliadis3 0:5a54aaccd065 40
jmelliadis3 0:5a54aaccd065 41 void Mpr121::configureSettings()
jmelliadis3 0:5a54aaccd065 42 {
jmelliadis3 0:5a54aaccd065 43 // Put the MPR into setup mode
jmelliadis3 0:5a54aaccd065 44 this->write(ELE_CFG,0x00);
jmelliadis3 0:5a54aaccd065 45
jmelliadis3 0:5a54aaccd065 46 // Electrode filters for when data is > baseline
jmelliadis3 0:5a54aaccd065 47 unsigned char gtBaseline[] = {
jmelliadis3 0:5a54aaccd065 48 0x01, //MHD_R
jmelliadis3 0:5a54aaccd065 49 0x01, //NHD_R
jmelliadis3 0:5a54aaccd065 50 0x00, //NCL_R
jmelliadis3 0:5a54aaccd065 51 0x00 //FDL_R
jmelliadis3 0:5a54aaccd065 52 };
jmelliadis3 0:5a54aaccd065 53
jmelliadis3 0:5a54aaccd065 54 writeMany(MHD_R,gtBaseline,4);
jmelliadis3 0:5a54aaccd065 55
jmelliadis3 0:5a54aaccd065 56 // Electrode filters for when data is < baseline
jmelliadis3 0:5a54aaccd065 57 unsigned char ltBaseline[] = {
jmelliadis3 0:5a54aaccd065 58 0x01, //MHD_F
jmelliadis3 0:5a54aaccd065 59 0x01, //NHD_F
jmelliadis3 0:5a54aaccd065 60 0xFF, //NCL_F
jmelliadis3 0:5a54aaccd065 61 0x02 //FDL_F
jmelliadis3 0:5a54aaccd065 62 };
jmelliadis3 0:5a54aaccd065 63
jmelliadis3 0:5a54aaccd065 64 writeMany(MHD_F,ltBaseline,4);
jmelliadis3 0:5a54aaccd065 65
jmelliadis3 0:5a54aaccd065 66 // Electrode touch and release thresholds
jmelliadis3 0:5a54aaccd065 67 unsigned char electrodeThresholds[] = {
jmelliadis3 0:5a54aaccd065 68 E_THR_T, // Touch Threshhold
jmelliadis3 0:5a54aaccd065 69 E_THR_R // Release Threshold
jmelliadis3 0:5a54aaccd065 70 };
jmelliadis3 0:5a54aaccd065 71
jmelliadis3 0:5a54aaccd065 72 for(int i=0; i<12; i++){
jmelliadis3 0:5a54aaccd065 73 int result = writeMany((ELE0_T+(i*2)),electrodeThresholds,2);
jmelliadis3 0:5a54aaccd065 74 }
jmelliadis3 0:5a54aaccd065 75
jmelliadis3 0:5a54aaccd065 76 // Proximity Settings
jmelliadis3 0:5a54aaccd065 77 unsigned char proximitySettings[] = {
jmelliadis3 0:5a54aaccd065 78 0xff, //MHD_Prox_R
jmelliadis3 0:5a54aaccd065 79 0xff, //NHD_Prox_R
jmelliadis3 0:5a54aaccd065 80 0x00, //NCL_Prox_R
jmelliadis3 0:5a54aaccd065 81 0x00, //FDL_Prox_R
jmelliadis3 0:5a54aaccd065 82 0x01, //MHD_Prox_F
jmelliadis3 0:5a54aaccd065 83 0x01, //NHD_Prox_F
jmelliadis3 0:5a54aaccd065 84 0xFF, //NCL_Prox_F
jmelliadis3 0:5a54aaccd065 85 0xff, //FDL_Prox_F
jmelliadis3 0:5a54aaccd065 86 0x00, //NHD_Prox_T
jmelliadis3 0:5a54aaccd065 87 0x00, //NCL_Prox_T
jmelliadis3 0:5a54aaccd065 88 0x00 //NFD_Prox_T
jmelliadis3 0:5a54aaccd065 89 };
jmelliadis3 0:5a54aaccd065 90 writeMany(MHDPROXR,proximitySettings,11);
jmelliadis3 0:5a54aaccd065 91
jmelliadis3 0:5a54aaccd065 92 unsigned char proxThresh[] = {
jmelliadis3 0:5a54aaccd065 93 PROX_THR_T, // Touch Threshold
jmelliadis3 0:5a54aaccd065 94 PROX_THR_R // Release Threshold
jmelliadis3 0:5a54aaccd065 95 };
jmelliadis3 0:5a54aaccd065 96 writeMany(EPROXTTH,proxThresh,2);
jmelliadis3 0:5a54aaccd065 97
jmelliadis3 0:5a54aaccd065 98 this->write(FIL_CFG,0x04);
jmelliadis3 0:5a54aaccd065 99
jmelliadis3 0:5a54aaccd065 100 // Set the electrode config to transition to active mode
jmelliadis3 0:5a54aaccd065 101 this->write(ELE_CFG,0x0c);
jmelliadis3 0:5a54aaccd065 102 }
jmelliadis3 0:5a54aaccd065 103
jmelliadis3 0:5a54aaccd065 104 void Mpr121::setElectrodeThreshold(int electrode, unsigned char touch, unsigned char release){
jmelliadis3 0:5a54aaccd065 105
jmelliadis3 0:5a54aaccd065 106 if(electrode > 11) return;
jmelliadis3 0:5a54aaccd065 107
jmelliadis3 0:5a54aaccd065 108 // Get the current mode
jmelliadis3 0:5a54aaccd065 109 unsigned char mode = this->read(ELE_CFG);
jmelliadis3 0:5a54aaccd065 110
jmelliadis3 0:5a54aaccd065 111 // Put the MPR into setup mode
jmelliadis3 0:5a54aaccd065 112 this->write(ELE_CFG,0x00);
jmelliadis3 0:5a54aaccd065 113
jmelliadis3 0:5a54aaccd065 114 // Write the new threshold
jmelliadis3 0:5a54aaccd065 115 this->write((ELE0_T+(electrode*2)), touch);
jmelliadis3 0:5a54aaccd065 116 this->write((ELE0_T+(electrode*2)+1), release);
jmelliadis3 0:5a54aaccd065 117
jmelliadis3 0:5a54aaccd065 118 //Restore the operating mode
jmelliadis3 0:5a54aaccd065 119 this->write(ELE_CFG, mode);
jmelliadis3 0:5a54aaccd065 120 }
jmelliadis3 0:5a54aaccd065 121
jmelliadis3 0:5a54aaccd065 122
jmelliadis3 0:5a54aaccd065 123 unsigned char Mpr121::read(int key){
jmelliadis3 0:5a54aaccd065 124
jmelliadis3 0:5a54aaccd065 125 unsigned char data[2];
jmelliadis3 0:5a54aaccd065 126
jmelliadis3 0:5a54aaccd065 127 //Start the command
jmelliadis3 0:5a54aaccd065 128 i2c->start();
jmelliadis3 0:5a54aaccd065 129
jmelliadis3 0:5a54aaccd065 130 // Address the target (Write mode)
jmelliadis3 0:5a54aaccd065 131 int ack1= i2c->write(address);
jmelliadis3 0:5a54aaccd065 132
jmelliadis3 0:5a54aaccd065 133 // Set the register key to read
jmelliadis3 0:5a54aaccd065 134 int ack2 = i2c->write(key);
jmelliadis3 0:5a54aaccd065 135
jmelliadis3 0:5a54aaccd065 136 // Re-start for read of data
jmelliadis3 0:5a54aaccd065 137 i2c->start();
jmelliadis3 0:5a54aaccd065 138
jmelliadis3 0:5a54aaccd065 139 // Re-send the target address in read mode
jmelliadis3 0:5a54aaccd065 140 int ack3 = i2c->write(address+1);
jmelliadis3 0:5a54aaccd065 141
jmelliadis3 0:5a54aaccd065 142 // Read in the result
jmelliadis3 0:5a54aaccd065 143 data[0] = i2c->read(0);
jmelliadis3 0:5a54aaccd065 144
jmelliadis3 0:5a54aaccd065 145 // Reset the bus
jmelliadis3 0:5a54aaccd065 146 i2c->stop();
jmelliadis3 0:5a54aaccd065 147
jmelliadis3 0:5a54aaccd065 148 return data[0];
jmelliadis3 0:5a54aaccd065 149 }
jmelliadis3 0:5a54aaccd065 150
jmelliadis3 0:5a54aaccd065 151
jmelliadis3 0:5a54aaccd065 152 int Mpr121::write(int key, unsigned char value){
jmelliadis3 0:5a54aaccd065 153
jmelliadis3 0:5a54aaccd065 154 //Start the command
jmelliadis3 0:5a54aaccd065 155 i2c->start();
jmelliadis3 0:5a54aaccd065 156
jmelliadis3 0:5a54aaccd065 157 // Address the target (Write mode)
jmelliadis3 0:5a54aaccd065 158 int ack1= i2c->write(address);
jmelliadis3 0:5a54aaccd065 159
jmelliadis3 0:5a54aaccd065 160 // Set the register key to write
jmelliadis3 0:5a54aaccd065 161 int ack2 = i2c->write(key);
jmelliadis3 0:5a54aaccd065 162
jmelliadis3 0:5a54aaccd065 163 // Read in the result
jmelliadis3 0:5a54aaccd065 164 int ack3 = i2c->write(value);
jmelliadis3 0:5a54aaccd065 165
jmelliadis3 0:5a54aaccd065 166 // Reset the bus
jmelliadis3 0:5a54aaccd065 167 i2c->stop();
jmelliadis3 0:5a54aaccd065 168
jmelliadis3 0:5a54aaccd065 169 return (ack1+ack2+ack3)-3;
jmelliadis3 0:5a54aaccd065 170 }
jmelliadis3 0:5a54aaccd065 171
jmelliadis3 0:5a54aaccd065 172
jmelliadis3 0:5a54aaccd065 173 int Mpr121::writeMany(int start, unsigned char* dataSet, int length){
jmelliadis3 0:5a54aaccd065 174 //Start the command
jmelliadis3 0:5a54aaccd065 175 i2c->start();
jmelliadis3 0:5a54aaccd065 176
jmelliadis3 0:5a54aaccd065 177 // Address the target (Write mode)
jmelliadis3 0:5a54aaccd065 178 int ack= i2c->write(address);
jmelliadis3 0:5a54aaccd065 179 if(ack!=1){
jmelliadis3 0:5a54aaccd065 180 return -1;
jmelliadis3 0:5a54aaccd065 181 }
jmelliadis3 0:5a54aaccd065 182
jmelliadis3 0:5a54aaccd065 183 // Set the register key to write
jmelliadis3 0:5a54aaccd065 184 ack = i2c->write(start);
jmelliadis3 0:5a54aaccd065 185 if(ack!=1){
jmelliadis3 0:5a54aaccd065 186 return -1;
jmelliadis3 0:5a54aaccd065 187 }
jmelliadis3 0:5a54aaccd065 188
jmelliadis3 0:5a54aaccd065 189 // Write the date set
jmelliadis3 0:5a54aaccd065 190 int count = 0;
jmelliadis3 0:5a54aaccd065 191 while(ack==1 && (count < length)){
jmelliadis3 0:5a54aaccd065 192 ack = i2c->write(dataSet[count]);
jmelliadis3 0:5a54aaccd065 193 count++;
jmelliadis3 0:5a54aaccd065 194 }
jmelliadis3 0:5a54aaccd065 195 // Stop the cmd
jmelliadis3 0:5a54aaccd065 196 i2c->stop();
jmelliadis3 0:5a54aaccd065 197
jmelliadis3 0:5a54aaccd065 198 return count;
jmelliadis3 0:5a54aaccd065 199 }
jmelliadis3 0:5a54aaccd065 200
jmelliadis3 0:5a54aaccd065 201
jmelliadis3 0:5a54aaccd065 202 bool Mpr121::getProximityMode(){
jmelliadis3 0:5a54aaccd065 203 if(this->read(ELE_CFG) > 0x0c)
jmelliadis3 0:5a54aaccd065 204 return true;
jmelliadis3 0:5a54aaccd065 205 else
jmelliadis3 0:5a54aaccd065 206 return false;
jmelliadis3 0:5a54aaccd065 207 }
jmelliadis3 0:5a54aaccd065 208
jmelliadis3 0:5a54aaccd065 209 void Mpr121::setProximityMode(bool mode){
jmelliadis3 0:5a54aaccd065 210 this->write(ELE_CFG,0x00);
jmelliadis3 0:5a54aaccd065 211 if(mode){
jmelliadis3 0:5a54aaccd065 212 this->write(ELE_CFG,0x30); //Sense proximity from ALL pads
jmelliadis3 0:5a54aaccd065 213 } else {
jmelliadis3 0:5a54aaccd065 214 this->write(ELE_CFG,0x0c); //Sense touch, all 12 pads active.
jmelliadis3 0:5a54aaccd065 215 }
jmelliadis3 0:5a54aaccd065 216 }
jmelliadis3 0:5a54aaccd065 217
jmelliadis3 0:5a54aaccd065 218
jmelliadis3 0:5a54aaccd065 219 int Mpr121::readTouchData(){
jmelliadis3 0:5a54aaccd065 220 return this->read(0x00);
jmelliadis3 0:5a54aaccd065 221 }