Daniel Begasse / Mbed 2 deprecated xbee_imessage

ECE 4180 Final Project

Dependencies:   4DGL-uLCD-SE mbed

mpr121.cpp@2:4d9a4421fc08, 2015-12-08 (annotated)

Committer:
dbegasse
Date:
Tue Dec 08 15:44:18 2015 +0000
Revision:
2:4d9a4421fc08
Parent:
0:69cae396d104 
ECE 4180 Final Project: XBee iMessage

Who changed what in which revision?

UserRevisionLine numberNew contents of line
dbegasse 0:69cae396d104 1 /*
dbegasse 0:69cae396d104 2 Copyright (c) 2011 Anthony Buckton (abuckton [at] blackink [dot} net {dot} au)
dbegasse 0:69cae396d104 3
dbegasse 0:69cae396d104 4 Permission is hereby granted, free of charge, to any person obtaining a copy
dbegasse 0:69cae396d104 5 of this software and associated documentation files (the "Software"), to deal
dbegasse 0:69cae396d104 6 in the Software without restriction, including without limitation the rights
dbegasse 0:69cae396d104 7 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
dbegasse 0:69cae396d104 8 copies of the Software, and to permit persons to whom the Software is
dbegasse 0:69cae396d104 9 furnished to do so, subject to the following conditions:
dbegasse 0:69cae396d104 10
dbegasse 0:69cae396d104 11 The above copyright notice and this permission notice shall be included in
dbegasse 0:69cae396d104 12 all copies or substantial portions of the Software.
dbegasse 0:69cae396d104 13
dbegasse 0:69cae396d104 14 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
dbegasse 0:69cae396d104 15 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
dbegasse 0:69cae396d104 16 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
dbegasse 0:69cae396d104 17 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
dbegasse 0:69cae396d104 18 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
dbegasse 0:69cae396d104 19 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
dbegasse 0:69cae396d104 20 THE SOFTWARE.
dbegasse 0:69cae396d104 21 */
dbegasse 0:69cae396d104 22
dbegasse 0:69cae396d104 23 #include <mbed.h>
dbegasse 0:69cae396d104 24 #include <sstream>
dbegasse 0:69cae396d104 25 #include <string>
dbegasse 0:69cae396d104 26 #include <list>
dbegasse 0:69cae396d104 27
dbegasse 0:69cae396d104 28 #include <mpr121.h>
dbegasse 0:69cae396d104 29
dbegasse 0:69cae396d104 30 Mpr121::Mpr121(I2C *i2c, Address i2cAddress)
dbegasse 0:69cae396d104 31 {
dbegasse 0:69cae396d104 32 this->i2c = i2c;
dbegasse 0:69cae396d104 33
dbegasse 0:69cae396d104 34 address = i2cAddress;
dbegasse 0:69cae396d104 35
dbegasse 0:69cae396d104 36 // Configure the MPR121 settings to default
dbegasse 0:69cae396d104 37 this->configureSettings();
dbegasse 0:69cae396d104 38 }
dbegasse 0:69cae396d104 39
dbegasse 0:69cae396d104 40
dbegasse 0:69cae396d104 41 void Mpr121::configureSettings()
dbegasse 0:69cae396d104 42 {
dbegasse 0:69cae396d104 43 // Put the MPR into setup mode
dbegasse 0:69cae396d104 44 this->write(ELE_CFG,0x00);
dbegasse 0:69cae396d104 45
dbegasse 0:69cae396d104 46 // Electrode filters for when data is > baseline
dbegasse 0:69cae396d104 47 unsigned char gtBaseline[] = {
dbegasse 0:69cae396d104 48 0x01, //MHD_R
dbegasse 0:69cae396d104 49 0x01, //NHD_R
dbegasse 0:69cae396d104 50 0x00, //NCL_R
dbegasse 0:69cae396d104 51 0x00 //FDL_R
dbegasse 0:69cae396d104 52 };
dbegasse 0:69cae396d104 53
dbegasse 0:69cae396d104 54 writeMany(MHD_R,gtBaseline,4);
dbegasse 0:69cae396d104 55
dbegasse 0:69cae396d104 56 // Electrode filters for when data is < baseline
dbegasse 0:69cae396d104 57 unsigned char ltBaseline[] = {
dbegasse 0:69cae396d104 58 0x01, //MHD_F
dbegasse 0:69cae396d104 59 0x01, //NHD_F
dbegasse 0:69cae396d104 60 0xFF, //NCL_F
dbegasse 0:69cae396d104 61 0x02 //FDL_F
dbegasse 0:69cae396d104 62 };
dbegasse 0:69cae396d104 63
dbegasse 0:69cae396d104 64 writeMany(MHD_F,ltBaseline,4);
dbegasse 0:69cae396d104 65
dbegasse 0:69cae396d104 66 // Electrode touch and release thresholds
dbegasse 0:69cae396d104 67 unsigned char electrodeThresholds[] = {
dbegasse 0:69cae396d104 68 E_THR_T, // Touch Threshhold
dbegasse 0:69cae396d104 69 E_THR_R // Release Threshold
dbegasse 0:69cae396d104 70 };
dbegasse 0:69cae396d104 71
dbegasse 0:69cae396d104 72 for(int i=0; i<12; i++){
dbegasse 0:69cae396d104 73 int result = writeMany((ELE0_T+(i*2)),electrodeThresholds,2);
dbegasse 0:69cae396d104 74 }
dbegasse 0:69cae396d104 75
dbegasse 0:69cae396d104 76 // Proximity Settings
dbegasse 0:69cae396d104 77 unsigned char proximitySettings[] = {
dbegasse 0:69cae396d104 78 0xff, //MHD_Prox_R
dbegasse 0:69cae396d104 79 0xff, //NHD_Prox_R
dbegasse 0:69cae396d104 80 0x00, //NCL_Prox_R
dbegasse 0:69cae396d104 81 0x00, //FDL_Prox_R
dbegasse 0:69cae396d104 82 0x01, //MHD_Prox_F
dbegasse 0:69cae396d104 83 0x01, //NHD_Prox_F
dbegasse 0:69cae396d104 84 0xFF, //NCL_Prox_F
dbegasse 0:69cae396d104 85 0xff, //FDL_Prox_F
dbegasse 0:69cae396d104 86 0x00, //NHD_Prox_T
dbegasse 0:69cae396d104 87 0x00, //NCL_Prox_T
dbegasse 0:69cae396d104 88 0x00 //NFD_Prox_T
dbegasse 0:69cae396d104 89 };
dbegasse 0:69cae396d104 90 writeMany(MHDPROXR,proximitySettings,11);
dbegasse 0:69cae396d104 91
dbegasse 0:69cae396d104 92 unsigned char proxThresh[] = {
dbegasse 0:69cae396d104 93 PROX_THR_T, // Touch Threshold
dbegasse 0:69cae396d104 94 PROX_THR_R // Release Threshold
dbegasse 0:69cae396d104 95 };
dbegasse 0:69cae396d104 96 writeMany(EPROXTTH,proxThresh,2);
dbegasse 0:69cae396d104 97
dbegasse 0:69cae396d104 98 this->write(FIL_CFG,0x04);
dbegasse 0:69cae396d104 99
dbegasse 0:69cae396d104 100 // Set the electrode config to transition to active mode
dbegasse 0:69cae396d104 101 this->write(ELE_CFG,0x0c);
dbegasse 0:69cae396d104 102 }
dbegasse 0:69cae396d104 103
dbegasse 0:69cae396d104 104 void Mpr121::setElectrodeThreshold(int electrode, unsigned char touch, unsigned char release){
dbegasse 0:69cae396d104 105
dbegasse 0:69cae396d104 106 if(electrode > 11) return;
dbegasse 0:69cae396d104 107
dbegasse 0:69cae396d104 108 // Get the current mode
dbegasse 0:69cae396d104 109 unsigned char mode = this->read(ELE_CFG);
dbegasse 0:69cae396d104 110
dbegasse 0:69cae396d104 111 // Put the MPR into setup mode
dbegasse 0:69cae396d104 112 this->write(ELE_CFG,0x00);
dbegasse 0:69cae396d104 113
dbegasse 0:69cae396d104 114 // Write the new threshold
dbegasse 0:69cae396d104 115 this->write((ELE0_T+(electrode*2)), touch);
dbegasse 0:69cae396d104 116 this->write((ELE0_T+(electrode*2)+1), release);
dbegasse 0:69cae396d104 117
dbegasse 0:69cae396d104 118 //Restore the operating mode
dbegasse 0:69cae396d104 119 this->write(ELE_CFG, mode);
dbegasse 0:69cae396d104 120 }
dbegasse 0:69cae396d104 121
dbegasse 0:69cae396d104 122
dbegasse 0:69cae396d104 123 unsigned char Mpr121::read(int key){
dbegasse 0:69cae396d104 124
dbegasse 0:69cae396d104 125 unsigned char data[2];
dbegasse 0:69cae396d104 126
dbegasse 0:69cae396d104 127 //Start the command
dbegasse 0:69cae396d104 128 i2c->start();
dbegasse 0:69cae396d104 129
dbegasse 0:69cae396d104 130 // Address the target (Write mode)
dbegasse 0:69cae396d104 131 int ack1= i2c->write(address);
dbegasse 0:69cae396d104 132
dbegasse 0:69cae396d104 133 // Set the register key to read
dbegasse 0:69cae396d104 134 int ack2 = i2c->write(key);
dbegasse 0:69cae396d104 135
dbegasse 0:69cae396d104 136 // Re-start for read of data
dbegasse 0:69cae396d104 137 i2c->start();
dbegasse 0:69cae396d104 138
dbegasse 0:69cae396d104 139 // Re-send the target address in read mode
dbegasse 0:69cae396d104 140 int ack3 = i2c->write(address+1);
dbegasse 0:69cae396d104 141
dbegasse 0:69cae396d104 142 // Read in the result
dbegasse 0:69cae396d104 143 data[0] = i2c->read(0);
dbegasse 0:69cae396d104 144
dbegasse 0:69cae396d104 145 // Reset the bus
dbegasse 0:69cae396d104 146 i2c->stop();
dbegasse 0:69cae396d104 147
dbegasse 0:69cae396d104 148 return data[0];
dbegasse 0:69cae396d104 149 }
dbegasse 0:69cae396d104 150
dbegasse 0:69cae396d104 151
dbegasse 0:69cae396d104 152 int Mpr121::write(int key, unsigned char value){
dbegasse 0:69cae396d104 153
dbegasse 0:69cae396d104 154 //Start the command
dbegasse 0:69cae396d104 155 i2c->start();
dbegasse 0:69cae396d104 156
dbegasse 0:69cae396d104 157 // Address the target (Write mode)
dbegasse 0:69cae396d104 158 int ack1= i2c->write(address);
dbegasse 0:69cae396d104 159
dbegasse 0:69cae396d104 160 // Set the register key to write
dbegasse 0:69cae396d104 161 int ack2 = i2c->write(key);
dbegasse 0:69cae396d104 162
dbegasse 0:69cae396d104 163 // Read in the result
dbegasse 0:69cae396d104 164 int ack3 = i2c->write(value);
dbegasse 0:69cae396d104 165
dbegasse 0:69cae396d104 166 // Reset the bus
dbegasse 0:69cae396d104 167 i2c->stop();
dbegasse 0:69cae396d104 168
dbegasse 0:69cae396d104 169 return (ack1+ack2+ack3)-3;
dbegasse 0:69cae396d104 170 }
dbegasse 0:69cae396d104 171
dbegasse 0:69cae396d104 172
dbegasse 0:69cae396d104 173 int Mpr121::writeMany(int start, unsigned char* dataSet, int length){
dbegasse 0:69cae396d104 174 //Start the command
dbegasse 0:69cae396d104 175 i2c->start();
dbegasse 0:69cae396d104 176
dbegasse 0:69cae396d104 177 // Address the target (Write mode)
dbegasse 0:69cae396d104 178 int ack= i2c->write(address);
dbegasse 0:69cae396d104 179 if(ack!=1){
dbegasse 0:69cae396d104 180 return -1;
dbegasse 0:69cae396d104 181 }
dbegasse 0:69cae396d104 182
dbegasse 0:69cae396d104 183 // Set the register key to write
dbegasse 0:69cae396d104 184 ack = i2c->write(start);
dbegasse 0:69cae396d104 185 if(ack!=1){
dbegasse 0:69cae396d104 186 return -1;
dbegasse 0:69cae396d104 187 }
dbegasse 0:69cae396d104 188
dbegasse 0:69cae396d104 189 // Write the date set
dbegasse 0:69cae396d104 190 int count = 0;
dbegasse 0:69cae396d104 191 while(ack==1 && (count < length)){
dbegasse 0:69cae396d104 192 ack = i2c->write(dataSet[count]);
dbegasse 0:69cae396d104 193 count++;
dbegasse 0:69cae396d104 194 }
dbegasse 0:69cae396d104 195 // Stop the cmd
dbegasse 0:69cae396d104 196 i2c->stop();
dbegasse 0:69cae396d104 197
dbegasse 0:69cae396d104 198 return count;
dbegasse 0:69cae396d104 199 }
dbegasse 0:69cae396d104 200
dbegasse 0:69cae396d104 201
dbegasse 0:69cae396d104 202 bool Mpr121::getProximityMode(){
dbegasse 0:69cae396d104 203 if(this->read(ELE_CFG) > 0x0c)
dbegasse 0:69cae396d104 204 return true;
dbegasse 0:69cae396d104 205 else
dbegasse 0:69cae396d104 206 return false;
dbegasse 0:69cae396d104 207 }
dbegasse 0:69cae396d104 208
dbegasse 0:69cae396d104 209 void Mpr121::setProximityMode(bool mode){
dbegasse 0:69cae396d104 210 this->write(ELE_CFG,0x00);
dbegasse 0:69cae396d104 211 if(mode){
dbegasse 0:69cae396d104 212 this->write(ELE_CFG,0x30); //Sense proximity from ALL pads
dbegasse 0:69cae396d104 213 } else {
dbegasse 0:69cae396d104 214 this->write(ELE_CFG,0x0c); //Sense touch, all 12 pads active.
dbegasse 0:69cae396d104 215 }
dbegasse 0:69cae396d104 216 }
dbegasse 0:69cae396d104 217
dbegasse 0:69cae396d104 218
dbegasse 0:69cae396d104 219 int Mpr121::readTouchData(){
dbegasse 0:69cae396d104 220 return this->read(0x00);
dbegasse 0:69cae396d104 221 }