Anjali Shankar / Mbed 2 deprecated Lab4-Game

Tank Dodger Game

Dependencies:   4DGL-uLCD-SE SDFileSystem mbed-rtos mbed wave_player

mpr121.cpp@0:350246c72962, 2017-03-14 (annotated)

Committer:
ashankar35
Date:
Tue Mar 14 19:18:48 2017 +0000
Revision:
0:350246c72962
Lab4-FinalGame

Who changed what in which revision?

UserRevisionLine numberNew contents of line
ashankar35 0:350246c72962 1 /*
ashankar35 0:350246c72962 2 Copyright (c) 2011 Anthony Buckton (abuckton [at] blackink [dot} net {dot} au)
ashankar35 0:350246c72962 3
ashankar35 0:350246c72962 4 Permission is hereby granted, free of charge, to any person obtaining a copy
ashankar35 0:350246c72962 5 of this software and associated documentation files (the "Software"), to deal
ashankar35 0:350246c72962 6 in the Software without restriction, including without limitation the rights
ashankar35 0:350246c72962 7 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
ashankar35 0:350246c72962 8 copies of the Software, and to permit persons to whom the Software is
ashankar35 0:350246c72962 9 furnished to do so, subject to the following conditions:
ashankar35 0:350246c72962 10
ashankar35 0:350246c72962 11 The above copyright notice and this permission notice shall be included in
ashankar35 0:350246c72962 12 all copies or substantial portions of the Software.
ashankar35 0:350246c72962 13
ashankar35 0:350246c72962 14 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
ashankar35 0:350246c72962 15 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
ashankar35 0:350246c72962 16 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
ashankar35 0:350246c72962 17 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
ashankar35 0:350246c72962 18 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
ashankar35 0:350246c72962 19 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
ashankar35 0:350246c72962 20 THE SOFTWARE.
ashankar35 0:350246c72962 21 */
ashankar35 0:350246c72962 22
ashankar35 0:350246c72962 23 #include <mbed.h>
ashankar35 0:350246c72962 24 #include <sstream>
ashankar35 0:350246c72962 25 #include <string>
ashankar35 0:350246c72962 26 #include <list>
ashankar35 0:350246c72962 27
ashankar35 0:350246c72962 28 #include <mpr121.h>
ashankar35 0:350246c72962 29
ashankar35 0:350246c72962 30 Mpr121::Mpr121(I2C *i2c, Address i2cAddress)
ashankar35 0:350246c72962 31 {
ashankar35 0:350246c72962 32 this->i2c = i2c;
ashankar35 0:350246c72962 33
ashankar35 0:350246c72962 34 address = i2cAddress;
ashankar35 0:350246c72962 35
ashankar35 0:350246c72962 36 // Configure the MPR121 settings to default
ashankar35 0:350246c72962 37 this->configureSettings();
ashankar35 0:350246c72962 38 }
ashankar35 0:350246c72962 39
ashankar35 0:350246c72962 40
ashankar35 0:350246c72962 41 void Mpr121::configureSettings()
ashankar35 0:350246c72962 42 {
ashankar35 0:350246c72962 43 // Put the MPR into setup mode
ashankar35 0:350246c72962 44 this->write(ELE_CFG,0x00);
ashankar35 0:350246c72962 45
ashankar35 0:350246c72962 46 // Electrode filters for when data is > baseline
ashankar35 0:350246c72962 47 unsigned char gtBaseline[] = {
ashankar35 0:350246c72962 48 0x01, //MHD_R
ashankar35 0:350246c72962 49 0x01, //NHD_R
ashankar35 0:350246c72962 50 0x00, //NCL_R
ashankar35 0:350246c72962 51 0x00 //FDL_R
ashankar35 0:350246c72962 52 };
ashankar35 0:350246c72962 53
ashankar35 0:350246c72962 54 writeMany(MHD_R,gtBaseline,4);
ashankar35 0:350246c72962 55
ashankar35 0:350246c72962 56 // Electrode filters for when data is < baseline
ashankar35 0:350246c72962 57 unsigned char ltBaseline[] = {
ashankar35 0:350246c72962 58 0x01, //MHD_F
ashankar35 0:350246c72962 59 0x01, //NHD_F
ashankar35 0:350246c72962 60 0xFF, //NCL_F
ashankar35 0:350246c72962 61 0x02 //FDL_F
ashankar35 0:350246c72962 62 };
ashankar35 0:350246c72962 63
ashankar35 0:350246c72962 64 writeMany(MHD_F,ltBaseline,4);
ashankar35 0:350246c72962 65
ashankar35 0:350246c72962 66 // Electrode touch and release thresholds
ashankar35 0:350246c72962 67 unsigned char electrodeThresholds[] = {
ashankar35 0:350246c72962 68 E_THR_T, // Touch Threshhold
ashankar35 0:350246c72962 69 E_THR_R // Release Threshold
ashankar35 0:350246c72962 70 };
ashankar35 0:350246c72962 71
ashankar35 0:350246c72962 72 for(int i=0; i<12; i++){
ashankar35 0:350246c72962 73 int result = writeMany((ELE0_T+(i*2)),electrodeThresholds,2);
ashankar35 0:350246c72962 74 }
ashankar35 0:350246c72962 75
ashankar35 0:350246c72962 76 // Proximity Settings
ashankar35 0:350246c72962 77 unsigned char proximitySettings[] = {
ashankar35 0:350246c72962 78 0xff, //MHD_Prox_R
ashankar35 0:350246c72962 79 0xff, //NHD_Prox_R
ashankar35 0:350246c72962 80 0x00, //NCL_Prox_R
ashankar35 0:350246c72962 81 0x00, //FDL_Prox_R
ashankar35 0:350246c72962 82 0x01, //MHD_Prox_F
ashankar35 0:350246c72962 83 0x01, //NHD_Prox_F
ashankar35 0:350246c72962 84 0xFF, //NCL_Prox_F
ashankar35 0:350246c72962 85 0xff, //FDL_Prox_F
ashankar35 0:350246c72962 86 0x00, //NHD_Prox_T
ashankar35 0:350246c72962 87 0x00, //NCL_Prox_T
ashankar35 0:350246c72962 88 0x00 //NFD_Prox_T
ashankar35 0:350246c72962 89 };
ashankar35 0:350246c72962 90 writeMany(MHDPROXR,proximitySettings,11);
ashankar35 0:350246c72962 91
ashankar35 0:350246c72962 92 unsigned char proxThresh[] = {
ashankar35 0:350246c72962 93 PROX_THR_T, // Touch Threshold
ashankar35 0:350246c72962 94 PROX_THR_R // Release Threshold
ashankar35 0:350246c72962 95 };
ashankar35 0:350246c72962 96 writeMany(EPROXTTH,proxThresh,2);
ashankar35 0:350246c72962 97
ashankar35 0:350246c72962 98 this->write(FIL_CFG,0x04);
ashankar35 0:350246c72962 99
ashankar35 0:350246c72962 100 // Set the electrode config to transition to active mode
ashankar35 0:350246c72962 101 this->write(ELE_CFG,0x0c);
ashankar35 0:350246c72962 102 }
ashankar35 0:350246c72962 103
ashankar35 0:350246c72962 104 void Mpr121::setElectrodeThreshold(int electrode, unsigned char touch, unsigned char release){
ashankar35 0:350246c72962 105
ashankar35 0:350246c72962 106 if(electrode > 11) return;
ashankar35 0:350246c72962 107
ashankar35 0:350246c72962 108 // Get the current mode
ashankar35 0:350246c72962 109 unsigned char mode = this->read(ELE_CFG);
ashankar35 0:350246c72962 110
ashankar35 0:350246c72962 111 // Put the MPR into setup mode
ashankar35 0:350246c72962 112 this->write(ELE_CFG,0x00);
ashankar35 0:350246c72962 113
ashankar35 0:350246c72962 114 // Write the new threshold
ashankar35 0:350246c72962 115 this->write((ELE0_T+(electrode*2)), touch);
ashankar35 0:350246c72962 116 this->write((ELE0_T+(electrode*2)+1), release);
ashankar35 0:350246c72962 117
ashankar35 0:350246c72962 118 //Restore the operating mode
ashankar35 0:350246c72962 119 this->write(ELE_CFG, mode);
ashankar35 0:350246c72962 120 }
ashankar35 0:350246c72962 121
ashankar35 0:350246c72962 122
ashankar35 0:350246c72962 123 unsigned char Mpr121::read(int key){
ashankar35 0:350246c72962 124
ashankar35 0:350246c72962 125 unsigned char data[2];
ashankar35 0:350246c72962 126
ashankar35 0:350246c72962 127 //Start the command
ashankar35 0:350246c72962 128 i2c->start();
ashankar35 0:350246c72962 129
ashankar35 0:350246c72962 130 // Address the target (Write mode)
ashankar35 0:350246c72962 131 int ack1= i2c->write(address);
ashankar35 0:350246c72962 132
ashankar35 0:350246c72962 133 // Set the register key to read
ashankar35 0:350246c72962 134 int ack2 = i2c->write(key);
ashankar35 0:350246c72962 135
ashankar35 0:350246c72962 136 // Re-start for read of data
ashankar35 0:350246c72962 137 i2c->start();
ashankar35 0:350246c72962 138
ashankar35 0:350246c72962 139 // Re-send the target address in read mode
ashankar35 0:350246c72962 140 int ack3 = i2c->write(address+1);
ashankar35 0:350246c72962 141
ashankar35 0:350246c72962 142 // Read in the result
ashankar35 0:350246c72962 143 data[0] = i2c->read(0);
ashankar35 0:350246c72962 144
ashankar35 0:350246c72962 145 // Reset the bus
ashankar35 0:350246c72962 146 i2c->stop();
ashankar35 0:350246c72962 147
ashankar35 0:350246c72962 148 return data[0];
ashankar35 0:350246c72962 149 }
ashankar35 0:350246c72962 150
ashankar35 0:350246c72962 151
ashankar35 0:350246c72962 152 int Mpr121::write(int key, unsigned char value){
ashankar35 0:350246c72962 153
ashankar35 0:350246c72962 154 //Start the command
ashankar35 0:350246c72962 155 i2c->start();
ashankar35 0:350246c72962 156
ashankar35 0:350246c72962 157 // Address the target (Write mode)
ashankar35 0:350246c72962 158 int ack1= i2c->write(address);
ashankar35 0:350246c72962 159
ashankar35 0:350246c72962 160 // Set the register key to write
ashankar35 0:350246c72962 161 int ack2 = i2c->write(key);
ashankar35 0:350246c72962 162
ashankar35 0:350246c72962 163 // Read in the result
ashankar35 0:350246c72962 164 int ack3 = i2c->write(value);
ashankar35 0:350246c72962 165
ashankar35 0:350246c72962 166 // Reset the bus
ashankar35 0:350246c72962 167 i2c->stop();
ashankar35 0:350246c72962 168
ashankar35 0:350246c72962 169 return (ack1+ack2+ack3)-3;
ashankar35 0:350246c72962 170 }
ashankar35 0:350246c72962 171
ashankar35 0:350246c72962 172
ashankar35 0:350246c72962 173 int Mpr121::writeMany(int start, unsigned char* dataSet, int length){
ashankar35 0:350246c72962 174 //Start the command
ashankar35 0:350246c72962 175 i2c->start();
ashankar35 0:350246c72962 176
ashankar35 0:350246c72962 177 // Address the target (Write mode)
ashankar35 0:350246c72962 178 int ack= i2c->write(address);
ashankar35 0:350246c72962 179 if(ack!=1){
ashankar35 0:350246c72962 180 return -1;
ashankar35 0:350246c72962 181 }
ashankar35 0:350246c72962 182
ashankar35 0:350246c72962 183 // Set the register key to write
ashankar35 0:350246c72962 184 ack = i2c->write(start);
ashankar35 0:350246c72962 185 if(ack!=1){
ashankar35 0:350246c72962 186 return -1;
ashankar35 0:350246c72962 187 }
ashankar35 0:350246c72962 188
ashankar35 0:350246c72962 189 // Write the date set
ashankar35 0:350246c72962 190 int count = 0;
ashankar35 0:350246c72962 191 while(ack==1 && (count < length)){
ashankar35 0:350246c72962 192 ack = i2c->write(dataSet[count]);
ashankar35 0:350246c72962 193 count++;
ashankar35 0:350246c72962 194 }
ashankar35 0:350246c72962 195 // Stop the cmd
ashankar35 0:350246c72962 196 i2c->stop();
ashankar35 0:350246c72962 197
ashankar35 0:350246c72962 198 return count;
ashankar35 0:350246c72962 199 }
ashankar35 0:350246c72962 200
ashankar35 0:350246c72962 201
ashankar35 0:350246c72962 202 bool Mpr121::getProximityMode(){
ashankar35 0:350246c72962 203 if(this->read(ELE_CFG) > 0x0c)
ashankar35 0:350246c72962 204 return true;
ashankar35 0:350246c72962 205 else
ashankar35 0:350246c72962 206 return false;
ashankar35 0:350246c72962 207 }
ashankar35 0:350246c72962 208
ashankar35 0:350246c72962 209 void Mpr121::setProximityMode(bool mode){
ashankar35 0:350246c72962 210 this->write(ELE_CFG,0x00);
ashankar35 0:350246c72962 211 if(mode){
ashankar35 0:350246c72962 212 this->write(ELE_CFG,0x30); //Sense proximity from ALL pads
ashankar35 0:350246c72962 213 } else {
ashankar35 0:350246c72962 214 this->write(ELE_CFG,0x0c); //Sense touch, all 12 pads active.
ashankar35 0:350246c72962 215 }
ashankar35 0:350246c72962 216 }
ashankar35 0:350246c72962 217
ashankar35 0:350246c72962 218
ashankar35 0:350246c72962 219 int Mpr121::readTouchData(){
ashankar35 0:350246c72962 220 return this->read(0x00);
ashankar35 0:350246c72962 221 }