Alan Ko / Mbed 2 deprecated Piano_Tile_Racer

Piano Tile Racer Game for ECE 4180

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

mpr121.cpp@0:eb011b288325, 2021-05-04 (annotated)

Committer:
alanjko9
Date:
Tue May 04 20:38:25 2021 +0000
Revision:
0:eb011b288325
Piano_Tile_Racer_Source_Code

Who changed what in which revision?

UserRevisionLine numberNew contents of line
alanjko9 0:eb011b288325 1 /*
alanjko9 0:eb011b288325 2 Copyright (c) 2011 Anthony Buckton (abuckton [at] blackink [dot} net {dot} au)
alanjko9 0:eb011b288325 3
alanjko9 0:eb011b288325 4 Permission is hereby granted, free of charge, to any person obtaining a copy
alanjko9 0:eb011b288325 5 of this software and associated documentation files (the "Software"), to deal
alanjko9 0:eb011b288325 6 in the Software without restriction, including without limitation the rights
alanjko9 0:eb011b288325 7 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
alanjko9 0:eb011b288325 8 copies of the Software, and to permit persons to whom the Software is
alanjko9 0:eb011b288325 9 furnished to do so, subject to the following conditions:
alanjko9 0:eb011b288325 10
alanjko9 0:eb011b288325 11 The above copyright notice and this permission notice shall be included in
alanjko9 0:eb011b288325 12 all copies or substantial portions of the Software.
alanjko9 0:eb011b288325 13
alanjko9 0:eb011b288325 14 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
alanjko9 0:eb011b288325 15 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
alanjko9 0:eb011b288325 16 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
alanjko9 0:eb011b288325 17 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
alanjko9 0:eb011b288325 18 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
alanjko9 0:eb011b288325 19 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
alanjko9 0:eb011b288325 20 THE SOFTWARE.
alanjko9 0:eb011b288325 21 */
alanjko9 0:eb011b288325 22
alanjko9 0:eb011b288325 23 #include <mbed.h>
alanjko9 0:eb011b288325 24 #include <sstream>
alanjko9 0:eb011b288325 25 #include <string>
alanjko9 0:eb011b288325 26 #include <list>
alanjko9 0:eb011b288325 27
alanjko9 0:eb011b288325 28 #include <mpr121.h>
alanjko9 0:eb011b288325 29
alanjko9 0:eb011b288325 30 Mpr121::Mpr121(I2C *i2c, Address i2cAddress)
alanjko9 0:eb011b288325 31 {
alanjko9 0:eb011b288325 32 this->i2c = i2c;
alanjko9 0:eb011b288325 33
alanjko9 0:eb011b288325 34 address = i2cAddress;
alanjko9 0:eb011b288325 35
alanjko9 0:eb011b288325 36 // Configure the MPR121 settings to default
alanjko9 0:eb011b288325 37 this->configureSettings();
alanjko9 0:eb011b288325 38 }
alanjko9 0:eb011b288325 39
alanjko9 0:eb011b288325 40
alanjko9 0:eb011b288325 41 void Mpr121::configureSettings()
alanjko9 0:eb011b288325 42 {
alanjko9 0:eb011b288325 43 // Put the MPR into setup mode
alanjko9 0:eb011b288325 44 this->write(ELE_CFG,0x00);
alanjko9 0:eb011b288325 45
alanjko9 0:eb011b288325 46 // Electrode filters for when data is > baseline
alanjko9 0:eb011b288325 47 unsigned char gtBaseline[] = {
alanjko9 0:eb011b288325 48 0x01, //MHD_R
alanjko9 0:eb011b288325 49 0x01, //NHD_R
alanjko9 0:eb011b288325 50 0x00, //NCL_R
alanjko9 0:eb011b288325 51 0x00 //FDL_R
alanjko9 0:eb011b288325 52 };
alanjko9 0:eb011b288325 53
alanjko9 0:eb011b288325 54 writeMany(MHD_R,gtBaseline,4);
alanjko9 0:eb011b288325 55
alanjko9 0:eb011b288325 56 // Electrode filters for when data is < baseline
alanjko9 0:eb011b288325 57 unsigned char ltBaseline[] = {
alanjko9 0:eb011b288325 58 0x01, //MHD_F
alanjko9 0:eb011b288325 59 0x01, //NHD_F
alanjko9 0:eb011b288325 60 0xFF, //NCL_F
alanjko9 0:eb011b288325 61 0x02 //FDL_F
alanjko9 0:eb011b288325 62 };
alanjko9 0:eb011b288325 63
alanjko9 0:eb011b288325 64 writeMany(MHD_F,ltBaseline,4);
alanjko9 0:eb011b288325 65
alanjko9 0:eb011b288325 66 // Electrode touch and release thresholds
alanjko9 0:eb011b288325 67 unsigned char electrodeThresholds[] = {
alanjko9 0:eb011b288325 68 E_THR_T, // Touch Threshhold
alanjko9 0:eb011b288325 69 E_THR_R // Release Threshold
alanjko9 0:eb011b288325 70 };
alanjko9 0:eb011b288325 71
alanjko9 0:eb011b288325 72 for(int i=0; i<12; i++){
alanjko9 0:eb011b288325 73 int result = writeMany((ELE0_T+(i*2)),electrodeThresholds,2);
alanjko9 0:eb011b288325 74 }
alanjko9 0:eb011b288325 75
alanjko9 0:eb011b288325 76 // Proximity Settings
alanjko9 0:eb011b288325 77 unsigned char proximitySettings[] = {
alanjko9 0:eb011b288325 78 0xff, //MHD_Prox_R
alanjko9 0:eb011b288325 79 0xff, //NHD_Prox_R
alanjko9 0:eb011b288325 80 0x00, //NCL_Prox_R
alanjko9 0:eb011b288325 81 0x00, //FDL_Prox_R
alanjko9 0:eb011b288325 82 0x01, //MHD_Prox_F
alanjko9 0:eb011b288325 83 0x01, //NHD_Prox_F
alanjko9 0:eb011b288325 84 0xFF, //NCL_Prox_F
alanjko9 0:eb011b288325 85 0xff, //FDL_Prox_F
alanjko9 0:eb011b288325 86 0x00, //NHD_Prox_T
alanjko9 0:eb011b288325 87 0x00, //NCL_Prox_T
alanjko9 0:eb011b288325 88 0x00 //NFD_Prox_T
alanjko9 0:eb011b288325 89 };
alanjko9 0:eb011b288325 90 writeMany(MHDPROXR,proximitySettings,11);
alanjko9 0:eb011b288325 91
alanjko9 0:eb011b288325 92 unsigned char proxThresh[] = {
alanjko9 0:eb011b288325 93 PROX_THR_T, // Touch Threshold
alanjko9 0:eb011b288325 94 PROX_THR_R // Release Threshold
alanjko9 0:eb011b288325 95 };
alanjko9 0:eb011b288325 96 writeMany(EPROXTTH,proxThresh,2);
alanjko9 0:eb011b288325 97
alanjko9 0:eb011b288325 98 this->write(FIL_CFG,0x04);
alanjko9 0:eb011b288325 99
alanjko9 0:eb011b288325 100 // Set the electrode config to transition to active mode
alanjko9 0:eb011b288325 101 this->write(ELE_CFG,0x0c);
alanjko9 0:eb011b288325 102 }
alanjko9 0:eb011b288325 103
alanjko9 0:eb011b288325 104 void Mpr121::setElectrodeThreshold(int electrode, unsigned char touch, unsigned char release){
alanjko9 0:eb011b288325 105
alanjko9 0:eb011b288325 106 if(electrode > 11) return;
alanjko9 0:eb011b288325 107
alanjko9 0:eb011b288325 108 // Get the current mode
alanjko9 0:eb011b288325 109 unsigned char mode = this->read(ELE_CFG);
alanjko9 0:eb011b288325 110
alanjko9 0:eb011b288325 111 // Put the MPR into setup mode
alanjko9 0:eb011b288325 112 this->write(ELE_CFG,0x00);
alanjko9 0:eb011b288325 113
alanjko9 0:eb011b288325 114 // Write the new threshold
alanjko9 0:eb011b288325 115 this->write((ELE0_T+(electrode*2)), touch);
alanjko9 0:eb011b288325 116 this->write((ELE0_T+(electrode*2)+1), release);
alanjko9 0:eb011b288325 117
alanjko9 0:eb011b288325 118 //Restore the operating mode
alanjko9 0:eb011b288325 119 this->write(ELE_CFG, mode);
alanjko9 0:eb011b288325 120 }
alanjko9 0:eb011b288325 121
alanjko9 0:eb011b288325 122
alanjko9 0:eb011b288325 123 unsigned char Mpr121::read(int key){
alanjko9 0:eb011b288325 124
alanjko9 0:eb011b288325 125 unsigned char data[2];
alanjko9 0:eb011b288325 126
alanjko9 0:eb011b288325 127 //Start the command
alanjko9 0:eb011b288325 128 i2c->start();
alanjko9 0:eb011b288325 129
alanjko9 0:eb011b288325 130 // Address the target (Write mode)
alanjko9 0:eb011b288325 131 int ack1= i2c->write(address);
alanjko9 0:eb011b288325 132
alanjko9 0:eb011b288325 133 // Set the register key to read
alanjko9 0:eb011b288325 134 int ack2 = i2c->write(key);
alanjko9 0:eb011b288325 135
alanjko9 0:eb011b288325 136 // Re-start for read of data
alanjko9 0:eb011b288325 137 i2c->start();
alanjko9 0:eb011b288325 138
alanjko9 0:eb011b288325 139 // Re-send the target address in read mode
alanjko9 0:eb011b288325 140 int ack3 = i2c->write(address+1);
alanjko9 0:eb011b288325 141
alanjko9 0:eb011b288325 142 // Read in the result
alanjko9 0:eb011b288325 143 data[0] = i2c->read(0);
alanjko9 0:eb011b288325 144
alanjko9 0:eb011b288325 145 // Reset the bus
alanjko9 0:eb011b288325 146 i2c->stop();
alanjko9 0:eb011b288325 147
alanjko9 0:eb011b288325 148 return data[0];
alanjko9 0:eb011b288325 149 }
alanjko9 0:eb011b288325 150
alanjko9 0:eb011b288325 151
alanjko9 0:eb011b288325 152 int Mpr121::write(int key, unsigned char value){
alanjko9 0:eb011b288325 153
alanjko9 0:eb011b288325 154 //Start the command
alanjko9 0:eb011b288325 155 i2c->start();
alanjko9 0:eb011b288325 156
alanjko9 0:eb011b288325 157 // Address the target (Write mode)
alanjko9 0:eb011b288325 158 int ack1= i2c->write(address);
alanjko9 0:eb011b288325 159
alanjko9 0:eb011b288325 160 // Set the register key to write
alanjko9 0:eb011b288325 161 int ack2 = i2c->write(key);
alanjko9 0:eb011b288325 162
alanjko9 0:eb011b288325 163 // Read in the result
alanjko9 0:eb011b288325 164 int ack3 = i2c->write(value);
alanjko9 0:eb011b288325 165
alanjko9 0:eb011b288325 166 // Reset the bus
alanjko9 0:eb011b288325 167 i2c->stop();
alanjko9 0:eb011b288325 168
alanjko9 0:eb011b288325 169 return (ack1+ack2+ack3)-3;
alanjko9 0:eb011b288325 170 }
alanjko9 0:eb011b288325 171
alanjko9 0:eb011b288325 172
alanjko9 0:eb011b288325 173 int Mpr121::writeMany(int start, unsigned char* dataSet, int length){
alanjko9 0:eb011b288325 174 //Start the command
alanjko9 0:eb011b288325 175 i2c->start();
alanjko9 0:eb011b288325 176
alanjko9 0:eb011b288325 177 // Address the target (Write mode)
alanjko9 0:eb011b288325 178 int ack= i2c->write(address);
alanjko9 0:eb011b288325 179 if(ack!=1){
alanjko9 0:eb011b288325 180 return -1;
alanjko9 0:eb011b288325 181 }
alanjko9 0:eb011b288325 182
alanjko9 0:eb011b288325 183 // Set the register key to write
alanjko9 0:eb011b288325 184 ack = i2c->write(start);
alanjko9 0:eb011b288325 185 if(ack!=1){
alanjko9 0:eb011b288325 186 return -1;
alanjko9 0:eb011b288325 187 }
alanjko9 0:eb011b288325 188
alanjko9 0:eb011b288325 189 // Write the date set
alanjko9 0:eb011b288325 190 int count = 0;
alanjko9 0:eb011b288325 191 while(ack==1 && (count < length)){
alanjko9 0:eb011b288325 192 ack = i2c->write(dataSet[count]);
alanjko9 0:eb011b288325 193 count++;
alanjko9 0:eb011b288325 194 }
alanjko9 0:eb011b288325 195 // Stop the cmd
alanjko9 0:eb011b288325 196 i2c->stop();
alanjko9 0:eb011b288325 197
alanjko9 0:eb011b288325 198 return count;
alanjko9 0:eb011b288325 199 }
alanjko9 0:eb011b288325 200
alanjko9 0:eb011b288325 201
alanjko9 0:eb011b288325 202 bool Mpr121::getProximityMode(){
alanjko9 0:eb011b288325 203 if(this->read(ELE_CFG) > 0x0c)
alanjko9 0:eb011b288325 204 return true;
alanjko9 0:eb011b288325 205 else
alanjko9 0:eb011b288325 206 return false;
alanjko9 0:eb011b288325 207 }
alanjko9 0:eb011b288325 208
alanjko9 0:eb011b288325 209 void Mpr121::setProximityMode(bool mode){
alanjko9 0:eb011b288325 210 this->write(ELE_CFG,0x00);
alanjko9 0:eb011b288325 211 if(mode){
alanjko9 0:eb011b288325 212 this->write(ELE_CFG,0x30); //Sense proximity from ALL pads
alanjko9 0:eb011b288325 213 } else {
alanjko9 0:eb011b288325 214 this->write(ELE_CFG,0x0c); //Sense touch, all 12 pads active.
alanjko9 0:eb011b288325 215 }
alanjko9 0:eb011b288325 216 }
alanjko9 0:eb011b288325 217
alanjko9 0:eb011b288325 218
alanjko9 0:eb011b288325 219 int Mpr121::readTouchData(){
alanjko9 0:eb011b288325 220 return this->read(0x00);
alanjko9 0:eb011b288325 221 }