Yu Jun Qin / Mbed 2 deprecated ECE4180_Final

ECE 4180 Final

Dependencies:   mbed wave_player mbed-rtos C12832_lcd 4DGL-uLCD-SE LCD_fonts SDFileSystem

mpr121.cpp@21:cbcbb3480cad, 2019-12-08 (annotated)

Committer:
yqin70
Date:
Sun Dec 08 02:18:30 2019 +0000
Revision:
21:cbcbb3480cad
Parent:
16:13b65f6139be 
somewhat done(pushbutton added, has an issue where if you spam the touchpad, it'll increase your score even if there is no bubble).

Who changed what in which revision?

UserRevisionLine numberNew contents of line
ShelbyC22 16:13b65f6139be 1 /*
ShelbyC22 16:13b65f6139be 2 Copyright (c) 2011 Anthony Buckton (abuckton [at] blackink [dot} net {dot} au)
ShelbyC22 16:13b65f6139be 3
ShelbyC22 16:13b65f6139be 4 Permission is hereby granted, free of charge, to any person obtaining a copy
ShelbyC22 16:13b65f6139be 5 of this software and associated documentation files (the "Software"), to deal
ShelbyC22 16:13b65f6139be 6 in the Software without restriction, including without limitation the rights
ShelbyC22 16:13b65f6139be 7 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
ShelbyC22 16:13b65f6139be 8 copies of the Software, and to permit persons to whom the Software is
ShelbyC22 16:13b65f6139be 9 furnished to do so, subject to the following conditions:
ShelbyC22 16:13b65f6139be 10
ShelbyC22 16:13b65f6139be 11 The above copyright notice and this permission notice shall be included in
ShelbyC22 16:13b65f6139be 12 all copies or substantial portions of the Software.
ShelbyC22 16:13b65f6139be 13
ShelbyC22 16:13b65f6139be 14 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
ShelbyC22 16:13b65f6139be 15 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
ShelbyC22 16:13b65f6139be 16 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
ShelbyC22 16:13b65f6139be 17 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
ShelbyC22 16:13b65f6139be 18 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
ShelbyC22 16:13b65f6139be 19 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
ShelbyC22 16:13b65f6139be 20 THE SOFTWARE.
ShelbyC22 16:13b65f6139be 21 */
ShelbyC22 16:13b65f6139be 22
ShelbyC22 16:13b65f6139be 23 #include <mbed.h>
ShelbyC22 16:13b65f6139be 24 #include <sstream>
ShelbyC22 16:13b65f6139be 25 #include <string>
ShelbyC22 16:13b65f6139be 26 #include <list>
ShelbyC22 16:13b65f6139be 27
ShelbyC22 16:13b65f6139be 28 #include <mpr121.h>
ShelbyC22 16:13b65f6139be 29
ShelbyC22 16:13b65f6139be 30 Mpr121::Mpr121(I2C *i2c, Address i2cAddress)
ShelbyC22 16:13b65f6139be 31 {
ShelbyC22 16:13b65f6139be 32 this->i2c = i2c;
ShelbyC22 16:13b65f6139be 33
ShelbyC22 16:13b65f6139be 34 address = i2cAddress;
ShelbyC22 16:13b65f6139be 35
ShelbyC22 16:13b65f6139be 36 // Configure the MPR121 settings to default
ShelbyC22 16:13b65f6139be 37 this->configureSettings();
ShelbyC22 16:13b65f6139be 38 }
ShelbyC22 16:13b65f6139be 39
ShelbyC22 16:13b65f6139be 40
ShelbyC22 16:13b65f6139be 41 void Mpr121::configureSettings()
ShelbyC22 16:13b65f6139be 42 {
ShelbyC22 16:13b65f6139be 43 // Put the MPR into setup mode
ShelbyC22 16:13b65f6139be 44 this->write(ELE_CFG,0x00);
ShelbyC22 16:13b65f6139be 45
ShelbyC22 16:13b65f6139be 46 // Electrode filters for when data is > baseline
ShelbyC22 16:13b65f6139be 47 unsigned char gtBaseline[] = {
ShelbyC22 16:13b65f6139be 48 0x01, //MHD_R
ShelbyC22 16:13b65f6139be 49 0x01, //NHD_R
ShelbyC22 16:13b65f6139be 50 0x00, //NCL_R
ShelbyC22 16:13b65f6139be 51 0x00 //FDL_R
ShelbyC22 16:13b65f6139be 52 };
ShelbyC22 16:13b65f6139be 53
ShelbyC22 16:13b65f6139be 54 writeMany(MHD_R,gtBaseline,4);
ShelbyC22 16:13b65f6139be 55
ShelbyC22 16:13b65f6139be 56 // Electrode filters for when data is < baseline
ShelbyC22 16:13b65f6139be 57 unsigned char ltBaseline[] = {
ShelbyC22 16:13b65f6139be 58 0x01, //MHD_F
ShelbyC22 16:13b65f6139be 59 0x01, //NHD_F
ShelbyC22 16:13b65f6139be 60 0xFF, //NCL_F
ShelbyC22 16:13b65f6139be 61 0x02 //FDL_F
ShelbyC22 16:13b65f6139be 62 };
ShelbyC22 16:13b65f6139be 63
ShelbyC22 16:13b65f6139be 64 writeMany(MHD_F,ltBaseline,4);
ShelbyC22 16:13b65f6139be 65
ShelbyC22 16:13b65f6139be 66 // Electrode touch and release thresholds
ShelbyC22 16:13b65f6139be 67 unsigned char electrodeThresholds[] = {
ShelbyC22 16:13b65f6139be 68 E_THR_T, // Touch Threshhold
ShelbyC22 16:13b65f6139be 69 E_THR_R // Release Threshold
ShelbyC22 16:13b65f6139be 70 };
ShelbyC22 16:13b65f6139be 71
ShelbyC22 16:13b65f6139be 72 for(int i=0; i<12; i++){
ShelbyC22 16:13b65f6139be 73 int result = writeMany((ELE0_T+(i*2)),electrodeThresholds,2);
ShelbyC22 16:13b65f6139be 74 }
ShelbyC22 16:13b65f6139be 75
ShelbyC22 16:13b65f6139be 76 // Proximity Settings
ShelbyC22 16:13b65f6139be 77 unsigned char proximitySettings[] = {
ShelbyC22 16:13b65f6139be 78 0xff, //MHD_Prox_R
ShelbyC22 16:13b65f6139be 79 0xff, //NHD_Prox_R
ShelbyC22 16:13b65f6139be 80 0x00, //NCL_Prox_R
ShelbyC22 16:13b65f6139be 81 0x00, //FDL_Prox_R
ShelbyC22 16:13b65f6139be 82 0x01, //MHD_Prox_F
ShelbyC22 16:13b65f6139be 83 0x01, //NHD_Prox_F
ShelbyC22 16:13b65f6139be 84 0xFF, //NCL_Prox_F
ShelbyC22 16:13b65f6139be 85 0xff, //FDL_Prox_F
ShelbyC22 16:13b65f6139be 86 0x00, //NHD_Prox_T
ShelbyC22 16:13b65f6139be 87 0x00, //NCL_Prox_T
ShelbyC22 16:13b65f6139be 88 0x00 //NFD_Prox_T
ShelbyC22 16:13b65f6139be 89 };
ShelbyC22 16:13b65f6139be 90 writeMany(MHDPROXR,proximitySettings,11);
ShelbyC22 16:13b65f6139be 91
ShelbyC22 16:13b65f6139be 92 unsigned char proxThresh[] = {
ShelbyC22 16:13b65f6139be 93 PROX_THR_T, // Touch Threshold
ShelbyC22 16:13b65f6139be 94 PROX_THR_R // Release Threshold
ShelbyC22 16:13b65f6139be 95 };
ShelbyC22 16:13b65f6139be 96 writeMany(EPROXTTH,proxThresh,2);
ShelbyC22 16:13b65f6139be 97
ShelbyC22 16:13b65f6139be 98 this->write(FIL_CFG,0x04);
ShelbyC22 16:13b65f6139be 99
ShelbyC22 16:13b65f6139be 100 // Set the electrode config to transition to active mode
ShelbyC22 16:13b65f6139be 101 this->write(ELE_CFG,0x0c);
ShelbyC22 16:13b65f6139be 102 }
ShelbyC22 16:13b65f6139be 103
ShelbyC22 16:13b65f6139be 104 void Mpr121::setElectrodeThreshold(int electrode, unsigned char touch, unsigned char release){
ShelbyC22 16:13b65f6139be 105
ShelbyC22 16:13b65f6139be 106 if(electrode > 11) return;
ShelbyC22 16:13b65f6139be 107
ShelbyC22 16:13b65f6139be 108 // Get the current mode
ShelbyC22 16:13b65f6139be 109 unsigned char mode = this->read(ELE_CFG);
ShelbyC22 16:13b65f6139be 110
ShelbyC22 16:13b65f6139be 111 // Put the MPR into setup mode
ShelbyC22 16:13b65f6139be 112 this->write(ELE_CFG,0x00);
ShelbyC22 16:13b65f6139be 113
ShelbyC22 16:13b65f6139be 114 // Write the new threshold
ShelbyC22 16:13b65f6139be 115 this->write((ELE0_T+(electrode*2)), touch);
ShelbyC22 16:13b65f6139be 116 this->write((ELE0_T+(electrode*2)+1), release);
ShelbyC22 16:13b65f6139be 117
ShelbyC22 16:13b65f6139be 118 //Restore the operating mode
ShelbyC22 16:13b65f6139be 119 this->write(ELE_CFG, mode);
ShelbyC22 16:13b65f6139be 120 }
ShelbyC22 16:13b65f6139be 121
ShelbyC22 16:13b65f6139be 122
ShelbyC22 16:13b65f6139be 123 unsigned char Mpr121::read(int key){
ShelbyC22 16:13b65f6139be 124
ShelbyC22 16:13b65f6139be 125 unsigned char data[2];
ShelbyC22 16:13b65f6139be 126
ShelbyC22 16:13b65f6139be 127 //Start the command
ShelbyC22 16:13b65f6139be 128 i2c->start();
ShelbyC22 16:13b65f6139be 129
ShelbyC22 16:13b65f6139be 130 // Address the target (Write mode)
ShelbyC22 16:13b65f6139be 131 int ack1= i2c->write(address);
ShelbyC22 16:13b65f6139be 132
ShelbyC22 16:13b65f6139be 133 // Set the register key to read
ShelbyC22 16:13b65f6139be 134 int ack2 = i2c->write(key);
ShelbyC22 16:13b65f6139be 135
ShelbyC22 16:13b65f6139be 136 // Re-start for read of data
ShelbyC22 16:13b65f6139be 137 i2c->start();
ShelbyC22 16:13b65f6139be 138
ShelbyC22 16:13b65f6139be 139 // Re-send the target address in read mode
ShelbyC22 16:13b65f6139be 140 int ack3 = i2c->write(address+1);
ShelbyC22 16:13b65f6139be 141
ShelbyC22 16:13b65f6139be 142 // Read in the result
ShelbyC22 16:13b65f6139be 143 data[0] = i2c->read(0);
ShelbyC22 16:13b65f6139be 144
ShelbyC22 16:13b65f6139be 145 // Reset the bus
ShelbyC22 16:13b65f6139be 146 i2c->stop();
ShelbyC22 16:13b65f6139be 147
ShelbyC22 16:13b65f6139be 148 return data[0];
ShelbyC22 16:13b65f6139be 149 }
ShelbyC22 16:13b65f6139be 150
ShelbyC22 16:13b65f6139be 151
ShelbyC22 16:13b65f6139be 152 int Mpr121::write(int key, unsigned char value){
ShelbyC22 16:13b65f6139be 153
ShelbyC22 16:13b65f6139be 154 //Start the command
ShelbyC22 16:13b65f6139be 155 i2c->start();
ShelbyC22 16:13b65f6139be 156
ShelbyC22 16:13b65f6139be 157 // Address the target (Write mode)
ShelbyC22 16:13b65f6139be 158 int ack1= i2c->write(address);
ShelbyC22 16:13b65f6139be 159
ShelbyC22 16:13b65f6139be 160 // Set the register key to write
ShelbyC22 16:13b65f6139be 161 int ack2 = i2c->write(key);
ShelbyC22 16:13b65f6139be 162
ShelbyC22 16:13b65f6139be 163 // Read in the result
ShelbyC22 16:13b65f6139be 164 int ack3 = i2c->write(value);
ShelbyC22 16:13b65f6139be 165
ShelbyC22 16:13b65f6139be 166 // Reset the bus
ShelbyC22 16:13b65f6139be 167 i2c->stop();
ShelbyC22 16:13b65f6139be 168
ShelbyC22 16:13b65f6139be 169 return (ack1+ack2+ack3)-3;
ShelbyC22 16:13b65f6139be 170 }
ShelbyC22 16:13b65f6139be 171
ShelbyC22 16:13b65f6139be 172
ShelbyC22 16:13b65f6139be 173 int Mpr121::writeMany(int start, unsigned char* dataSet, int length){
ShelbyC22 16:13b65f6139be 174 //Start the command
ShelbyC22 16:13b65f6139be 175 i2c->start();
ShelbyC22 16:13b65f6139be 176
ShelbyC22 16:13b65f6139be 177 // Address the target (Write mode)
ShelbyC22 16:13b65f6139be 178 int ack= i2c->write(address);
ShelbyC22 16:13b65f6139be 179 if(ack!=1){
ShelbyC22 16:13b65f6139be 180 return -1;
ShelbyC22 16:13b65f6139be 181 }
ShelbyC22 16:13b65f6139be 182
ShelbyC22 16:13b65f6139be 183 // Set the register key to write
ShelbyC22 16:13b65f6139be 184 ack = i2c->write(start);
ShelbyC22 16:13b65f6139be 185 if(ack!=1){
ShelbyC22 16:13b65f6139be 186 return -1;
ShelbyC22 16:13b65f6139be 187 }
ShelbyC22 16:13b65f6139be 188
ShelbyC22 16:13b65f6139be 189 // Write the date set
ShelbyC22 16:13b65f6139be 190 int count = 0;
ShelbyC22 16:13b65f6139be 191 while(ack==1 && (count < length)){
ShelbyC22 16:13b65f6139be 192 ack = i2c->write(dataSet[count]);
ShelbyC22 16:13b65f6139be 193 count++;
ShelbyC22 16:13b65f6139be 194 }
ShelbyC22 16:13b65f6139be 195 // Stop the cmd
ShelbyC22 16:13b65f6139be 196 i2c->stop();
ShelbyC22 16:13b65f6139be 197
ShelbyC22 16:13b65f6139be 198 return count;
ShelbyC22 16:13b65f6139be 199 }
ShelbyC22 16:13b65f6139be 200
ShelbyC22 16:13b65f6139be 201
ShelbyC22 16:13b65f6139be 202 bool Mpr121::getProximityMode(){
ShelbyC22 16:13b65f6139be 203 if(this->read(ELE_CFG) > 0x0c)
ShelbyC22 16:13b65f6139be 204 return true;
ShelbyC22 16:13b65f6139be 205 else
ShelbyC22 16:13b65f6139be 206 return false;
ShelbyC22 16:13b65f6139be 207 }
ShelbyC22 16:13b65f6139be 208
ShelbyC22 16:13b65f6139be 209 void Mpr121::setProximityMode(bool mode){
ShelbyC22 16:13b65f6139be 210 this->write(ELE_CFG,0x00);
ShelbyC22 16:13b65f6139be 211 if(mode){
ShelbyC22 16:13b65f6139be 212 this->write(ELE_CFG,0x30); //Sense proximity from ALL pads
ShelbyC22 16:13b65f6139be 213 } else {
ShelbyC22 16:13b65f6139be 214 this->write(ELE_CFG,0x0c); //Sense touch, all 12 pads active.
ShelbyC22 16:13b65f6139be 215 }
ShelbyC22 16:13b65f6139be 216 }
ShelbyC22 16:13b65f6139be 217
ShelbyC22 16:13b65f6139be 218
ShelbyC22 16:13b65f6139be 219 int Mpr121::readTouchData(){
ShelbyC22 16:13b65f6139be 220 return this->read(0x00);
ShelbyC22 16:13b65f6139be 221 }