Michael Hennessy / Mbed 2 deprecated Final_project_water_balloon_launcher

Water Balloon Launcher

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

mpr121.cpp@0:3388913dec04, 2016-05-02 (annotated)

Committer:
mhennessy3
Date:
Mon May 02 05:04:17 2016 +0000
Revision:
0:3388913dec04
Water Balloon Launcher Code

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mhennessy3 0:3388913dec04 1 /*
mhennessy3 0:3388913dec04 2 Copyright (c) 2011 Anthony Buckton (abuckton [at] blackink [dot} net {dot} au)
mhennessy3 0:3388913dec04 3
mhennessy3 0:3388913dec04 4 Permission is hereby granted, free of charge, to any person obtaining a copy
mhennessy3 0:3388913dec04 5 of this software and associated documentation files (the "Software"), to deal
mhennessy3 0:3388913dec04 6 in the Software without restriction, including without limitation the rights
mhennessy3 0:3388913dec04 7 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
mhennessy3 0:3388913dec04 8 copies of the Software, and to permit persons to whom the Software is
mhennessy3 0:3388913dec04 9 furnished to do so, subject to the following conditions:
mhennessy3 0:3388913dec04 10
mhennessy3 0:3388913dec04 11 The above copyright notice and this permission notice shall be included in
mhennessy3 0:3388913dec04 12 all copies or substantial portions of the Software.
mhennessy3 0:3388913dec04 13
mhennessy3 0:3388913dec04 14 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
mhennessy3 0:3388913dec04 15 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
mhennessy3 0:3388913dec04 16 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
mhennessy3 0:3388913dec04 17 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
mhennessy3 0:3388913dec04 18 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
mhennessy3 0:3388913dec04 19 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
mhennessy3 0:3388913dec04 20 THE SOFTWARE.
mhennessy3 0:3388913dec04 21 */
mhennessy3 0:3388913dec04 22
mhennessy3 0:3388913dec04 23 #include <mbed.h>
mhennessy3 0:3388913dec04 24 #include <sstream>
mhennessy3 0:3388913dec04 25 #include <string>
mhennessy3 0:3388913dec04 26 #include <list>
mhennessy3 0:3388913dec04 27
mhennessy3 0:3388913dec04 28 #include <mpr121.h>
mhennessy3 0:3388913dec04 29
mhennessy3 0:3388913dec04 30 Mpr121::Mpr121(I2C *i2c, Address i2cAddress)
mhennessy3 0:3388913dec04 31 {
mhennessy3 0:3388913dec04 32 this->i2c = i2c;
mhennessy3 0:3388913dec04 33
mhennessy3 0:3388913dec04 34 address = i2cAddress;
mhennessy3 0:3388913dec04 35
mhennessy3 0:3388913dec04 36 // Configure the MPR121 settings to default
mhennessy3 0:3388913dec04 37 this->configureSettings();
mhennessy3 0:3388913dec04 38 }
mhennessy3 0:3388913dec04 39
mhennessy3 0:3388913dec04 40
mhennessy3 0:3388913dec04 41 void Mpr121::configureSettings()
mhennessy3 0:3388913dec04 42 {
mhennessy3 0:3388913dec04 43 // Put the MPR into setup mode
mhennessy3 0:3388913dec04 44 this->write(ELE_CFG,0x00);
mhennessy3 0:3388913dec04 45
mhennessy3 0:3388913dec04 46 // Electrode filters for when data is > baseline
mhennessy3 0:3388913dec04 47 unsigned char gtBaseline[] = {
mhennessy3 0:3388913dec04 48 0x01, //MHD_R
mhennessy3 0:3388913dec04 49 0x01, //NHD_R
mhennessy3 0:3388913dec04 50 0x00, //NCL_R
mhennessy3 0:3388913dec04 51 0x00 //FDL_R
mhennessy3 0:3388913dec04 52 };
mhennessy3 0:3388913dec04 53
mhennessy3 0:3388913dec04 54 writeMany(MHD_R,gtBaseline,4);
mhennessy3 0:3388913dec04 55
mhennessy3 0:3388913dec04 56 // Electrode filters for when data is < baseline
mhennessy3 0:3388913dec04 57 unsigned char ltBaseline[] = {
mhennessy3 0:3388913dec04 58 0x01, //MHD_F
mhennessy3 0:3388913dec04 59 0x01, //NHD_F
mhennessy3 0:3388913dec04 60 0xFF, //NCL_F
mhennessy3 0:3388913dec04 61 0x02 //FDL_F
mhennessy3 0:3388913dec04 62 };
mhennessy3 0:3388913dec04 63
mhennessy3 0:3388913dec04 64 writeMany(MHD_F,ltBaseline,4);
mhennessy3 0:3388913dec04 65
mhennessy3 0:3388913dec04 66 // Electrode touch and release thresholds
mhennessy3 0:3388913dec04 67 unsigned char electrodeThresholds[] = {
mhennessy3 0:3388913dec04 68 E_THR_T, // Touch Threshhold
mhennessy3 0:3388913dec04 69 E_THR_R // Release Threshold
mhennessy3 0:3388913dec04 70 };
mhennessy3 0:3388913dec04 71
mhennessy3 0:3388913dec04 72 for(int i=0; i<12; i++){
mhennessy3 0:3388913dec04 73 int result = writeMany((ELE0_T+(i*2)),electrodeThresholds,2);
mhennessy3 0:3388913dec04 74 }
mhennessy3 0:3388913dec04 75
mhennessy3 0:3388913dec04 76 // Proximity Settings
mhennessy3 0:3388913dec04 77 unsigned char proximitySettings[] = {
mhennessy3 0:3388913dec04 78 0xff, //MHD_Prox_R
mhennessy3 0:3388913dec04 79 0xff, //NHD_Prox_R
mhennessy3 0:3388913dec04 80 0x00, //NCL_Prox_R
mhennessy3 0:3388913dec04 81 0x00, //FDL_Prox_R
mhennessy3 0:3388913dec04 82 0x01, //MHD_Prox_F
mhennessy3 0:3388913dec04 83 0x01, //NHD_Prox_F
mhennessy3 0:3388913dec04 84 0xFF, //NCL_Prox_F
mhennessy3 0:3388913dec04 85 0xff, //FDL_Prox_F
mhennessy3 0:3388913dec04 86 0x00, //NHD_Prox_T
mhennessy3 0:3388913dec04 87 0x00, //NCL_Prox_T
mhennessy3 0:3388913dec04 88 0x00 //NFD_Prox_T
mhennessy3 0:3388913dec04 89 };
mhennessy3 0:3388913dec04 90 writeMany(MHDPROXR,proximitySettings,11);
mhennessy3 0:3388913dec04 91
mhennessy3 0:3388913dec04 92 unsigned char proxThresh[] = {
mhennessy3 0:3388913dec04 93 PROX_THR_T, // Touch Threshold
mhennessy3 0:3388913dec04 94 PROX_THR_R // Release Threshold
mhennessy3 0:3388913dec04 95 };
mhennessy3 0:3388913dec04 96 writeMany(EPROXTTH,proxThresh,2);
mhennessy3 0:3388913dec04 97
mhennessy3 0:3388913dec04 98 this->write(FIL_CFG,0x04);
mhennessy3 0:3388913dec04 99
mhennessy3 0:3388913dec04 100 // Set the electrode config to transition to active mode
mhennessy3 0:3388913dec04 101 this->write(ELE_CFG,0x0c);
mhennessy3 0:3388913dec04 102 }
mhennessy3 0:3388913dec04 103
mhennessy3 0:3388913dec04 104 void Mpr121::setElectrodeThreshold(int electrode, unsigned char touch, unsigned char release){
mhennessy3 0:3388913dec04 105
mhennessy3 0:3388913dec04 106 if(electrode > 11) return;
mhennessy3 0:3388913dec04 107
mhennessy3 0:3388913dec04 108 // Get the current mode
mhennessy3 0:3388913dec04 109 unsigned char mode = this->read(ELE_CFG);
mhennessy3 0:3388913dec04 110
mhennessy3 0:3388913dec04 111 // Put the MPR into setup mode
mhennessy3 0:3388913dec04 112 this->write(ELE_CFG,0x00);
mhennessy3 0:3388913dec04 113
mhennessy3 0:3388913dec04 114 // Write the new threshold
mhennessy3 0:3388913dec04 115 this->write((ELE0_T+(electrode*2)), touch);
mhennessy3 0:3388913dec04 116 this->write((ELE0_T+(electrode*2)+1), release);
mhennessy3 0:3388913dec04 117
mhennessy3 0:3388913dec04 118 //Restore the operating mode
mhennessy3 0:3388913dec04 119 this->write(ELE_CFG, mode);
mhennessy3 0:3388913dec04 120 }
mhennessy3 0:3388913dec04 121
mhennessy3 0:3388913dec04 122
mhennessy3 0:3388913dec04 123 unsigned char Mpr121::read(int key){
mhennessy3 0:3388913dec04 124
mhennessy3 0:3388913dec04 125 unsigned char data[2];
mhennessy3 0:3388913dec04 126
mhennessy3 0:3388913dec04 127 //Start the command
mhennessy3 0:3388913dec04 128 i2c->start();
mhennessy3 0:3388913dec04 129
mhennessy3 0:3388913dec04 130 // Address the target (Write mode)
mhennessy3 0:3388913dec04 131 int ack1= i2c->write(address);
mhennessy3 0:3388913dec04 132
mhennessy3 0:3388913dec04 133 // Set the register key to read
mhennessy3 0:3388913dec04 134 int ack2 = i2c->write(key);
mhennessy3 0:3388913dec04 135
mhennessy3 0:3388913dec04 136 // Re-start for read of data
mhennessy3 0:3388913dec04 137 i2c->start();
mhennessy3 0:3388913dec04 138
mhennessy3 0:3388913dec04 139 // Re-send the target address in read mode
mhennessy3 0:3388913dec04 140 int ack3 = i2c->write(address+1);
mhennessy3 0:3388913dec04 141
mhennessy3 0:3388913dec04 142 // Read in the result
mhennessy3 0:3388913dec04 143 data[0] = i2c->read(0);
mhennessy3 0:3388913dec04 144
mhennessy3 0:3388913dec04 145 // Reset the bus
mhennessy3 0:3388913dec04 146 i2c->stop();
mhennessy3 0:3388913dec04 147
mhennessy3 0:3388913dec04 148 return data[0];
mhennessy3 0:3388913dec04 149 }
mhennessy3 0:3388913dec04 150
mhennessy3 0:3388913dec04 151
mhennessy3 0:3388913dec04 152 int Mpr121::write(int key, unsigned char value){
mhennessy3 0:3388913dec04 153
mhennessy3 0:3388913dec04 154 //Start the command
mhennessy3 0:3388913dec04 155 i2c->start();
mhennessy3 0:3388913dec04 156
mhennessy3 0:3388913dec04 157 // Address the target (Write mode)
mhennessy3 0:3388913dec04 158 int ack1= i2c->write(address);
mhennessy3 0:3388913dec04 159
mhennessy3 0:3388913dec04 160 // Set the register key to write
mhennessy3 0:3388913dec04 161 int ack2 = i2c->write(key);
mhennessy3 0:3388913dec04 162
mhennessy3 0:3388913dec04 163 // Read in the result
mhennessy3 0:3388913dec04 164 int ack3 = i2c->write(value);
mhennessy3 0:3388913dec04 165
mhennessy3 0:3388913dec04 166 // Reset the bus
mhennessy3 0:3388913dec04 167 i2c->stop();
mhennessy3 0:3388913dec04 168
mhennessy3 0:3388913dec04 169 return (ack1+ack2+ack3)-3;
mhennessy3 0:3388913dec04 170 }
mhennessy3 0:3388913dec04 171
mhennessy3 0:3388913dec04 172
mhennessy3 0:3388913dec04 173 int Mpr121::writeMany(int start, unsigned char* dataSet, int length){
mhennessy3 0:3388913dec04 174 //Start the command
mhennessy3 0:3388913dec04 175 i2c->start();
mhennessy3 0:3388913dec04 176
mhennessy3 0:3388913dec04 177 // Address the target (Write mode)
mhennessy3 0:3388913dec04 178 int ack= i2c->write(address);
mhennessy3 0:3388913dec04 179 if(ack!=1){
mhennessy3 0:3388913dec04 180 return -1;
mhennessy3 0:3388913dec04 181 }
mhennessy3 0:3388913dec04 182
mhennessy3 0:3388913dec04 183 // Set the register key to write
mhennessy3 0:3388913dec04 184 ack = i2c->write(start);
mhennessy3 0:3388913dec04 185 if(ack!=1){
mhennessy3 0:3388913dec04 186 return -1;
mhennessy3 0:3388913dec04 187 }
mhennessy3 0:3388913dec04 188
mhennessy3 0:3388913dec04 189 // Write the date set
mhennessy3 0:3388913dec04 190 int count = 0;
mhennessy3 0:3388913dec04 191 while(ack==1 && (count < length)){
mhennessy3 0:3388913dec04 192 ack = i2c->write(dataSet[count]);
mhennessy3 0:3388913dec04 193 count++;
mhennessy3 0:3388913dec04 194 }
mhennessy3 0:3388913dec04 195 // Stop the cmd
mhennessy3 0:3388913dec04 196 i2c->stop();
mhennessy3 0:3388913dec04 197
mhennessy3 0:3388913dec04 198 return count;
mhennessy3 0:3388913dec04 199 }
mhennessy3 0:3388913dec04 200
mhennessy3 0:3388913dec04 201
mhennessy3 0:3388913dec04 202 bool Mpr121::getProximityMode(){
mhennessy3 0:3388913dec04 203 if(this->read(ELE_CFG) > 0x0c)
mhennessy3 0:3388913dec04 204 return true;
mhennessy3 0:3388913dec04 205 else
mhennessy3 0:3388913dec04 206 return false;
mhennessy3 0:3388913dec04 207 }
mhennessy3 0:3388913dec04 208
mhennessy3 0:3388913dec04 209 void Mpr121::setProximityMode(bool mode){
mhennessy3 0:3388913dec04 210 this->write(ELE_CFG,0x00);
mhennessy3 0:3388913dec04 211 if(mode){
mhennessy3 0:3388913dec04 212 this->write(ELE_CFG,0x30); //Sense proximity from ALL pads
mhennessy3 0:3388913dec04 213 } else {
mhennessy3 0:3388913dec04 214 this->write(ELE_CFG,0x0c); //Sense touch, all 12 pads active.
mhennessy3 0:3388913dec04 215 }
mhennessy3 0:3388913dec04 216 }
mhennessy3 0:3388913dec04 217
mhennessy3 0:3388913dec04 218
mhennessy3 0:3388913dec04 219 int Mpr121::readTouchData(){
mhennessy3 0:3388913dec04 220 return this->read(0x00);
mhennessy3 0:3388913dec04 221 }