Taylor Nichols / Mbed 2 deprecated kegmo

Keg sharing system

Dependencies:   4DGL-uLCD-SE TextLCD mbed

mpr121.cpp@5:571cd0eea9be, 2016-12-09 (annotated)

Committer:
taylornichols
Date:
Fri Dec 09 03:18:03 2016 +0000
Revision:
5:571cd0eea9be
Parent:
0:dd375f44efef 
#if LCD_ON

Who changed what in which revision?

UserRevisionLine numberNew contents of line
taylornichols 0:dd375f44efef 1 /*
taylornichols 0:dd375f44efef 2 Copyright (c) 2011 Anthony Buckton (abuckton [at] blackink [dot} net {dot} au)
taylornichols 0:dd375f44efef 3
taylornichols 0:dd375f44efef 4 Permission is hereby granted, free of charge, to any person obtaining a copy
taylornichols 0:dd375f44efef 5 of this software and associated documentation files (the "Software"), to deal
taylornichols 0:dd375f44efef 6 in the Software without restriction, including without limitation the rights
taylornichols 0:dd375f44efef 7 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
taylornichols 0:dd375f44efef 8 copies of the Software, and to permit persons to whom the Software is
taylornichols 0:dd375f44efef 9 furnished to do so, subject to the following conditions:
taylornichols 0:dd375f44efef 10
taylornichols 0:dd375f44efef 11 The above copyright notice and this permission notice shall be included in
taylornichols 0:dd375f44efef 12 all copies or substantial portions of the Software.
taylornichols 0:dd375f44efef 13
taylornichols 0:dd375f44efef 14 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
taylornichols 0:dd375f44efef 15 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
taylornichols 0:dd375f44efef 16 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
taylornichols 0:dd375f44efef 17 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
taylornichols 0:dd375f44efef 18 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
taylornichols 0:dd375f44efef 19 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
taylornichols 0:dd375f44efef 20 THE SOFTWARE.
taylornichols 0:dd375f44efef 21 */
taylornichols 0:dd375f44efef 22
taylornichols 0:dd375f44efef 23 #include <mbed.h>
taylornichols 0:dd375f44efef 24 #include <sstream>
taylornichols 0:dd375f44efef 25 #include <string>
taylornichols 0:dd375f44efef 26 #include <list>
taylornichols 0:dd375f44efef 27
taylornichols 0:dd375f44efef 28 #include <mpr121.h>
taylornichols 0:dd375f44efef 29
taylornichols 0:dd375f44efef 30 Mpr121::Mpr121(I2C *i2c, Address i2cAddress)
taylornichols 0:dd375f44efef 31 {
taylornichols 0:dd375f44efef 32 this->i2c = i2c;
taylornichols 0:dd375f44efef 33
taylornichols 0:dd375f44efef 34 address = i2cAddress;
taylornichols 0:dd375f44efef 35
taylornichols 0:dd375f44efef 36 // Configure the MPR121 settings to default
taylornichols 0:dd375f44efef 37 this->configureSettings();
taylornichols 0:dd375f44efef 38 }
taylornichols 0:dd375f44efef 39
taylornichols 0:dd375f44efef 40
taylornichols 0:dd375f44efef 41 void Mpr121::configureSettings()
taylornichols 0:dd375f44efef 42 {
taylornichols 0:dd375f44efef 43 // Put the MPR into setup mode
taylornichols 0:dd375f44efef 44 this->write(ELE_CFG,0x00);
taylornichols 0:dd375f44efef 45
taylornichols 0:dd375f44efef 46 // Electrode filters for when data is > baseline
taylornichols 0:dd375f44efef 47 unsigned char gtBaseline[] = {
taylornichols 0:dd375f44efef 48 0x01, //MHD_R
taylornichols 0:dd375f44efef 49 0x01, //NHD_R
taylornichols 0:dd375f44efef 50 0x00, //NCL_R
taylornichols 0:dd375f44efef 51 0x00 //FDL_R
taylornichols 0:dd375f44efef 52 };
taylornichols 0:dd375f44efef 53
taylornichols 0:dd375f44efef 54 writeMany(MHD_R,gtBaseline,4);
taylornichols 0:dd375f44efef 55
taylornichols 0:dd375f44efef 56 // Electrode filters for when data is < baseline
taylornichols 0:dd375f44efef 57 unsigned char ltBaseline[] = {
taylornichols 0:dd375f44efef 58 0x01, //MHD_F
taylornichols 0:dd375f44efef 59 0x01, //NHD_F
taylornichols 0:dd375f44efef 60 0xFF, //NCL_F
taylornichols 0:dd375f44efef 61 0x02 //FDL_F
taylornichols 0:dd375f44efef 62 };
taylornichols 0:dd375f44efef 63
taylornichols 0:dd375f44efef 64 writeMany(MHD_F,ltBaseline,4);
taylornichols 0:dd375f44efef 65
taylornichols 0:dd375f44efef 66 // Electrode touch and release thresholds
taylornichols 0:dd375f44efef 67 unsigned char electrodeThresholds[] = {
taylornichols 0:dd375f44efef 68 E_THR_T, // Touch Threshhold
taylornichols 0:dd375f44efef 69 E_THR_R // Release Threshold
taylornichols 0:dd375f44efef 70 };
taylornichols 0:dd375f44efef 71
taylornichols 0:dd375f44efef 72 for(int i=0; i<12; i++){
taylornichols 0:dd375f44efef 73 int result = writeMany((ELE0_T+(i*2)),electrodeThresholds,2);
taylornichols 0:dd375f44efef 74 }
taylornichols 0:dd375f44efef 75
taylornichols 0:dd375f44efef 76 // Proximity Settings
taylornichols 0:dd375f44efef 77 unsigned char proximitySettings[] = {
taylornichols 0:dd375f44efef 78 0xff, //MHD_Prox_R
taylornichols 0:dd375f44efef 79 0xff, //NHD_Prox_R
taylornichols 0:dd375f44efef 80 0x00, //NCL_Prox_R
taylornichols 0:dd375f44efef 81 0x00, //FDL_Prox_R
taylornichols 0:dd375f44efef 82 0x01, //MHD_Prox_F
taylornichols 0:dd375f44efef 83 0x01, //NHD_Prox_F
taylornichols 0:dd375f44efef 84 0xFF, //NCL_Prox_F
taylornichols 0:dd375f44efef 85 0xff, //FDL_Prox_F
taylornichols 0:dd375f44efef 86 0x00, //NHD_Prox_T
taylornichols 0:dd375f44efef 87 0x00, //NCL_Prox_T
taylornichols 0:dd375f44efef 88 0x00 //NFD_Prox_T
taylornichols 0:dd375f44efef 89 };
taylornichols 0:dd375f44efef 90 writeMany(MHDPROXR,proximitySettings,11);
taylornichols 0:dd375f44efef 91
taylornichols 0:dd375f44efef 92 unsigned char proxThresh[] = {
taylornichols 0:dd375f44efef 93 PROX_THR_T, // Touch Threshold
taylornichols 0:dd375f44efef 94 PROX_THR_R // Release Threshold
taylornichols 0:dd375f44efef 95 };
taylornichols 0:dd375f44efef 96 writeMany(EPROXTTH,proxThresh,2);
taylornichols 0:dd375f44efef 97
taylornichols 0:dd375f44efef 98 this->write(FIL_CFG,0x04);
taylornichols 0:dd375f44efef 99
taylornichols 0:dd375f44efef 100 // Set the electrode config to transition to active mode
taylornichols 0:dd375f44efef 101 this->write(ELE_CFG,0x0c);
taylornichols 0:dd375f44efef 102 }
taylornichols 0:dd375f44efef 103
taylornichols 0:dd375f44efef 104 void Mpr121::setElectrodeThreshold(int electrode, unsigned char touch, unsigned char release){
taylornichols 0:dd375f44efef 105
taylornichols 0:dd375f44efef 106 if(electrode > 11) return;
taylornichols 0:dd375f44efef 107
taylornichols 0:dd375f44efef 108 // Get the current mode
taylornichols 0:dd375f44efef 109 unsigned char mode = this->read(ELE_CFG);
taylornichols 0:dd375f44efef 110
taylornichols 0:dd375f44efef 111 // Put the MPR into setup mode
taylornichols 0:dd375f44efef 112 this->write(ELE_CFG,0x00);
taylornichols 0:dd375f44efef 113
taylornichols 0:dd375f44efef 114 // Write the new threshold
taylornichols 0:dd375f44efef 115 this->write((ELE0_T+(electrode*2)), touch);
taylornichols 0:dd375f44efef 116 this->write((ELE0_T+(electrode*2)+1), release);
taylornichols 0:dd375f44efef 117
taylornichols 0:dd375f44efef 118 //Restore the operating mode
taylornichols 0:dd375f44efef 119 this->write(ELE_CFG, mode);
taylornichols 0:dd375f44efef 120 }
taylornichols 0:dd375f44efef 121
taylornichols 0:dd375f44efef 122
taylornichols 0:dd375f44efef 123 unsigned char Mpr121::read(int key){
taylornichols 0:dd375f44efef 124
taylornichols 0:dd375f44efef 125 unsigned char data[2];
taylornichols 0:dd375f44efef 126
taylornichols 0:dd375f44efef 127 //Start the command
taylornichols 0:dd375f44efef 128 i2c->start();
taylornichols 0:dd375f44efef 129
taylornichols 0:dd375f44efef 130 // Address the target (Write mode)
taylornichols 0:dd375f44efef 131 int ack1= i2c->write(address);
taylornichols 0:dd375f44efef 132
taylornichols 0:dd375f44efef 133 // Set the register key to read
taylornichols 0:dd375f44efef 134 int ack2 = i2c->write(key);
taylornichols 0:dd375f44efef 135
taylornichols 0:dd375f44efef 136 // Re-start for read of data
taylornichols 0:dd375f44efef 137 i2c->start();
taylornichols 0:dd375f44efef 138
taylornichols 0:dd375f44efef 139 // Re-send the target address in read mode
taylornichols 0:dd375f44efef 140 int ack3 = i2c->write(address+1);
taylornichols 0:dd375f44efef 141
taylornichols 0:dd375f44efef 142 // Read in the result
taylornichols 0:dd375f44efef 143 data[0] = i2c->read(0);
taylornichols 0:dd375f44efef 144
taylornichols 0:dd375f44efef 145 // Reset the bus
taylornichols 0:dd375f44efef 146 i2c->stop();
taylornichols 0:dd375f44efef 147
taylornichols 0:dd375f44efef 148 return data[0];
taylornichols 0:dd375f44efef 149 }
taylornichols 0:dd375f44efef 150
taylornichols 0:dd375f44efef 151
taylornichols 0:dd375f44efef 152 int Mpr121::write(int key, unsigned char value){
taylornichols 0:dd375f44efef 153
taylornichols 0:dd375f44efef 154 //Start the command
taylornichols 0:dd375f44efef 155 i2c->start();
taylornichols 0:dd375f44efef 156
taylornichols 0:dd375f44efef 157 // Address the target (Write mode)
taylornichols 0:dd375f44efef 158 int ack1= i2c->write(address);
taylornichols 0:dd375f44efef 159
taylornichols 0:dd375f44efef 160 // Set the register key to write
taylornichols 0:dd375f44efef 161 int ack2 = i2c->write(key);
taylornichols 0:dd375f44efef 162
taylornichols 0:dd375f44efef 163 // Read in the result
taylornichols 0:dd375f44efef 164 int ack3 = i2c->write(value);
taylornichols 0:dd375f44efef 165
taylornichols 0:dd375f44efef 166 // Reset the bus
taylornichols 0:dd375f44efef 167 i2c->stop();
taylornichols 0:dd375f44efef 168
taylornichols 0:dd375f44efef 169 return (ack1+ack2+ack3)-3;
taylornichols 0:dd375f44efef 170 }
taylornichols 0:dd375f44efef 171
taylornichols 0:dd375f44efef 172
taylornichols 0:dd375f44efef 173 int Mpr121::writeMany(int start, unsigned char* dataSet, int length){
taylornichols 0:dd375f44efef 174 //Start the command
taylornichols 0:dd375f44efef 175 i2c->start();
taylornichols 0:dd375f44efef 176
taylornichols 0:dd375f44efef 177 // Address the target (Write mode)
taylornichols 0:dd375f44efef 178 int ack= i2c->write(address);
taylornichols 0:dd375f44efef 179 if(ack!=1){
taylornichols 0:dd375f44efef 180 return -1;
taylornichols 0:dd375f44efef 181 }
taylornichols 0:dd375f44efef 182
taylornichols 0:dd375f44efef 183 // Set the register key to write
taylornichols 0:dd375f44efef 184 ack = i2c->write(start);
taylornichols 0:dd375f44efef 185 if(ack!=1){
taylornichols 0:dd375f44efef 186 return -1;
taylornichols 0:dd375f44efef 187 }
taylornichols 0:dd375f44efef 188
taylornichols 0:dd375f44efef 189 // Write the date set
taylornichols 0:dd375f44efef 190 int count = 0;
taylornichols 0:dd375f44efef 191 while(ack==1 && (count < length)){
taylornichols 0:dd375f44efef 192 ack = i2c->write(dataSet[count]);
taylornichols 0:dd375f44efef 193 count++;
taylornichols 0:dd375f44efef 194 }
taylornichols 0:dd375f44efef 195 // Stop the cmd
taylornichols 0:dd375f44efef 196 i2c->stop();
taylornichols 0:dd375f44efef 197
taylornichols 0:dd375f44efef 198 return count;
taylornichols 0:dd375f44efef 199 }
taylornichols 0:dd375f44efef 200
taylornichols 0:dd375f44efef 201
taylornichols 0:dd375f44efef 202 bool Mpr121::getProximityMode(){
taylornichols 0:dd375f44efef 203 if(this->read(ELE_CFG) > 0x0c)
taylornichols 0:dd375f44efef 204 return true;
taylornichols 0:dd375f44efef 205 else
taylornichols 0:dd375f44efef 206 return false;
taylornichols 0:dd375f44efef 207 }
taylornichols 0:dd375f44efef 208
taylornichols 0:dd375f44efef 209 void Mpr121::setProximityMode(bool mode){
taylornichols 0:dd375f44efef 210 this->write(ELE_CFG,0x00);
taylornichols 0:dd375f44efef 211 if(mode){
taylornichols 0:dd375f44efef 212 this->write(ELE_CFG,0x30); //Sense proximity from ALL pads
taylornichols 0:dd375f44efef 213 } else {
taylornichols 0:dd375f44efef 214 this->write(ELE_CFG,0x0c); //Sense touch, all 12 pads active.
taylornichols 0:dd375f44efef 215 }
taylornichols 0:dd375f44efef 216 }
taylornichols 0:dd375f44efef 217
taylornichols 0:dd375f44efef 218
taylornichols 0:dd375f44efef 219 int Mpr121::readTouchData(){
taylornichols 0:dd375f44efef 220 return this->read(0x00);
taylornichols 0:dd375f44efef 221 }