Gina Holden / Mbed 2 deprecated IoTAlarmSystem

IoT Alarm System with pushbutton for door, webpage for viewing status, and keypad for disabling alarm.

Dependencies:   PinDetect mbed wave_player FATFileSystem

Fork of ESP8266-WEB-Mbed-LPC1768-Controller by jim hamblen

mpr121.cpp@5:28e4c7315a20, 2016-03-17 (annotated)

Committer:
gholden3
Date:
Thu Mar 17 12:51:10 2016 +0000
Revision:
5:28e4c7315a20
clean and comment code for submission;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
gholden3 5:28e4c7315a20 1 /*
gholden3 5:28e4c7315a20 2 Copyright (c) 2011 Anthony Buckton (abuckton [at] blackink [dot} net {dot} au)
gholden3 5:28e4c7315a20 3
gholden3 5:28e4c7315a20 4 Permission is hereby granted, free of charge, to any person obtaining a copy
gholden3 5:28e4c7315a20 5 of this software and associated documentation files (the "Software"), to deal
gholden3 5:28e4c7315a20 6 in the Software without restriction, including without limitation the rights
gholden3 5:28e4c7315a20 7 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
gholden3 5:28e4c7315a20 8 copies of the Software, and to permit persons to whom the Software is
gholden3 5:28e4c7315a20 9 furnished to do so, subject to the following conditions:
gholden3 5:28e4c7315a20 10
gholden3 5:28e4c7315a20 11 The above copyright notice and this permission notice shall be included in
gholden3 5:28e4c7315a20 12 all copies or substantial portions of the Software.
gholden3 5:28e4c7315a20 13
gholden3 5:28e4c7315a20 14 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
gholden3 5:28e4c7315a20 15 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
gholden3 5:28e4c7315a20 16 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
gholden3 5:28e4c7315a20 17 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
gholden3 5:28e4c7315a20 18 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
gholden3 5:28e4c7315a20 19 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
gholden3 5:28e4c7315a20 20 THE SOFTWARE.
gholden3 5:28e4c7315a20 21 */
gholden3 5:28e4c7315a20 22
gholden3 5:28e4c7315a20 23 #include <mbed.h>
gholden3 5:28e4c7315a20 24 #include <sstream>
gholden3 5:28e4c7315a20 25 #include <string>
gholden3 5:28e4c7315a20 26 #include <list>
gholden3 5:28e4c7315a20 27
gholden3 5:28e4c7315a20 28 #include <mpr121.h>
gholden3 5:28e4c7315a20 29
gholden3 5:28e4c7315a20 30 Mpr121::Mpr121(I2C *i2c, Address i2cAddress)
gholden3 5:28e4c7315a20 31 {
gholden3 5:28e4c7315a20 32 this->i2c = i2c;
gholden3 5:28e4c7315a20 33
gholden3 5:28e4c7315a20 34 address = i2cAddress;
gholden3 5:28e4c7315a20 35
gholden3 5:28e4c7315a20 36 // Configure the MPR121 settings to default
gholden3 5:28e4c7315a20 37 this->configureSettings();
gholden3 5:28e4c7315a20 38 }
gholden3 5:28e4c7315a20 39
gholden3 5:28e4c7315a20 40
gholden3 5:28e4c7315a20 41 void Mpr121::configureSettings()
gholden3 5:28e4c7315a20 42 {
gholden3 5:28e4c7315a20 43 // Put the MPR into setup mode
gholden3 5:28e4c7315a20 44 this->write(ELE_CFG,0x00);
gholden3 5:28e4c7315a20 45
gholden3 5:28e4c7315a20 46 // Electrode filters for when data is > baseline
gholden3 5:28e4c7315a20 47 unsigned char gtBaseline[] = {
gholden3 5:28e4c7315a20 48 0x01, //MHD_R
gholden3 5:28e4c7315a20 49 0x01, //NHD_R
gholden3 5:28e4c7315a20 50 0x00, //NCL_R
gholden3 5:28e4c7315a20 51 0x00 //FDL_R
gholden3 5:28e4c7315a20 52 };
gholden3 5:28e4c7315a20 53
gholden3 5:28e4c7315a20 54 writeMany(MHD_R,gtBaseline,4);
gholden3 5:28e4c7315a20 55
gholden3 5:28e4c7315a20 56 // Electrode filters for when data is < baseline
gholden3 5:28e4c7315a20 57 unsigned char ltBaseline[] = {
gholden3 5:28e4c7315a20 58 0x01, //MHD_F
gholden3 5:28e4c7315a20 59 0x01, //NHD_F
gholden3 5:28e4c7315a20 60 0xFF, //NCL_F
gholden3 5:28e4c7315a20 61 0x02 //FDL_F
gholden3 5:28e4c7315a20 62 };
gholden3 5:28e4c7315a20 63
gholden3 5:28e4c7315a20 64 writeMany(MHD_F,ltBaseline,4);
gholden3 5:28e4c7315a20 65
gholden3 5:28e4c7315a20 66 // Electrode touch and release thresholds
gholden3 5:28e4c7315a20 67 unsigned char electrodeThresholds[] = {
gholden3 5:28e4c7315a20 68 E_THR_T, // Touch Threshhold
gholden3 5:28e4c7315a20 69 E_THR_R // Release Threshold
gholden3 5:28e4c7315a20 70 };
gholden3 5:28e4c7315a20 71
gholden3 5:28e4c7315a20 72 for(int i=0; i<12; i++){
gholden3 5:28e4c7315a20 73 int result = writeMany((ELE0_T+(i*2)),electrodeThresholds,2);
gholden3 5:28e4c7315a20 74 }
gholden3 5:28e4c7315a20 75
gholden3 5:28e4c7315a20 76 // Proximity Settings
gholden3 5:28e4c7315a20 77 unsigned char proximitySettings[] = {
gholden3 5:28e4c7315a20 78 0xff, //MHD_Prox_R
gholden3 5:28e4c7315a20 79 0xff, //NHD_Prox_R
gholden3 5:28e4c7315a20 80 0x00, //NCL_Prox_R
gholden3 5:28e4c7315a20 81 0x00, //FDL_Prox_R
gholden3 5:28e4c7315a20 82 0x01, //MHD_Prox_F
gholden3 5:28e4c7315a20 83 0x01, //NHD_Prox_F
gholden3 5:28e4c7315a20 84 0xFF, //NCL_Prox_F
gholden3 5:28e4c7315a20 85 0xff, //FDL_Prox_F
gholden3 5:28e4c7315a20 86 0x00, //NHD_Prox_T
gholden3 5:28e4c7315a20 87 0x00, //NCL_Prox_T
gholden3 5:28e4c7315a20 88 0x00 //NFD_Prox_T
gholden3 5:28e4c7315a20 89 };
gholden3 5:28e4c7315a20 90 writeMany(MHDPROXR,proximitySettings,11);
gholden3 5:28e4c7315a20 91
gholden3 5:28e4c7315a20 92 unsigned char proxThresh[] = {
gholden3 5:28e4c7315a20 93 PROX_THR_T, // Touch Threshold
gholden3 5:28e4c7315a20 94 PROX_THR_R // Release Threshold
gholden3 5:28e4c7315a20 95 };
gholden3 5:28e4c7315a20 96 writeMany(EPROXTTH,proxThresh,2);
gholden3 5:28e4c7315a20 97
gholden3 5:28e4c7315a20 98 this->write(FIL_CFG,0x04);
gholden3 5:28e4c7315a20 99
gholden3 5:28e4c7315a20 100 // Set the electrode config to transition to active mode
gholden3 5:28e4c7315a20 101 this->write(ELE_CFG,0x0c);
gholden3 5:28e4c7315a20 102 }
gholden3 5:28e4c7315a20 103
gholden3 5:28e4c7315a20 104 void Mpr121::setElectrodeThreshold(int electrode, unsigned char touch, unsigned char release){
gholden3 5:28e4c7315a20 105
gholden3 5:28e4c7315a20 106 if(electrode > 11) return;
gholden3 5:28e4c7315a20 107
gholden3 5:28e4c7315a20 108 // Get the current mode
gholden3 5:28e4c7315a20 109 unsigned char mode = this->read(ELE_CFG);
gholden3 5:28e4c7315a20 110
gholden3 5:28e4c7315a20 111 // Put the MPR into setup mode
gholden3 5:28e4c7315a20 112 this->write(ELE_CFG,0x00);
gholden3 5:28e4c7315a20 113
gholden3 5:28e4c7315a20 114 // Write the new threshold
gholden3 5:28e4c7315a20 115 this->write((ELE0_T+(electrode*2)), touch);
gholden3 5:28e4c7315a20 116 this->write((ELE0_T+(electrode*2)+1), release);
gholden3 5:28e4c7315a20 117
gholden3 5:28e4c7315a20 118 //Restore the operating mode
gholden3 5:28e4c7315a20 119 this->write(ELE_CFG, mode);
gholden3 5:28e4c7315a20 120 }
gholden3 5:28e4c7315a20 121
gholden3 5:28e4c7315a20 122
gholden3 5:28e4c7315a20 123 unsigned char Mpr121::read(int key){
gholden3 5:28e4c7315a20 124
gholden3 5:28e4c7315a20 125 unsigned char data[2];
gholden3 5:28e4c7315a20 126
gholden3 5:28e4c7315a20 127 //Start the command
gholden3 5:28e4c7315a20 128 i2c->start();
gholden3 5:28e4c7315a20 129
gholden3 5:28e4c7315a20 130 // Address the target (Write mode)
gholden3 5:28e4c7315a20 131 int ack1= i2c->write(address);
gholden3 5:28e4c7315a20 132
gholden3 5:28e4c7315a20 133 // Set the register key to read
gholden3 5:28e4c7315a20 134 int ack2 = i2c->write(key);
gholden3 5:28e4c7315a20 135
gholden3 5:28e4c7315a20 136 // Re-start for read of data
gholden3 5:28e4c7315a20 137 i2c->start();
gholden3 5:28e4c7315a20 138
gholden3 5:28e4c7315a20 139 // Re-send the target address in read mode
gholden3 5:28e4c7315a20 140 int ack3 = i2c->write(address+1);
gholden3 5:28e4c7315a20 141
gholden3 5:28e4c7315a20 142 // Read in the result
gholden3 5:28e4c7315a20 143 data[0] = i2c->read(0);
gholden3 5:28e4c7315a20 144
gholden3 5:28e4c7315a20 145 // Reset the bus
gholden3 5:28e4c7315a20 146 i2c->stop();
gholden3 5:28e4c7315a20 147
gholden3 5:28e4c7315a20 148 return data[0];
gholden3 5:28e4c7315a20 149 }
gholden3 5:28e4c7315a20 150
gholden3 5:28e4c7315a20 151
gholden3 5:28e4c7315a20 152 int Mpr121::write(int key, unsigned char value){
gholden3 5:28e4c7315a20 153
gholden3 5:28e4c7315a20 154 //Start the command
gholden3 5:28e4c7315a20 155 i2c->start();
gholden3 5:28e4c7315a20 156
gholden3 5:28e4c7315a20 157 // Address the target (Write mode)
gholden3 5:28e4c7315a20 158 int ack1= i2c->write(address);
gholden3 5:28e4c7315a20 159
gholden3 5:28e4c7315a20 160 // Set the register key to write
gholden3 5:28e4c7315a20 161 int ack2 = i2c->write(key);
gholden3 5:28e4c7315a20 162
gholden3 5:28e4c7315a20 163 // Read in the result
gholden3 5:28e4c7315a20 164 int ack3 = i2c->write(value);
gholden3 5:28e4c7315a20 165
gholden3 5:28e4c7315a20 166 // Reset the bus
gholden3 5:28e4c7315a20 167 i2c->stop();
gholden3 5:28e4c7315a20 168
gholden3 5:28e4c7315a20 169 return (ack1+ack2+ack3)-3;
gholden3 5:28e4c7315a20 170 }
gholden3 5:28e4c7315a20 171
gholden3 5:28e4c7315a20 172
gholden3 5:28e4c7315a20 173 int Mpr121::writeMany(int start, unsigned char* dataSet, int length){
gholden3 5:28e4c7315a20 174 //Start the command
gholden3 5:28e4c7315a20 175 i2c->start();
gholden3 5:28e4c7315a20 176
gholden3 5:28e4c7315a20 177 // Address the target (Write mode)
gholden3 5:28e4c7315a20 178 int ack= i2c->write(address);
gholden3 5:28e4c7315a20 179 if(ack!=1){
gholden3 5:28e4c7315a20 180 return -1;
gholden3 5:28e4c7315a20 181 }
gholden3 5:28e4c7315a20 182
gholden3 5:28e4c7315a20 183 // Set the register key to write
gholden3 5:28e4c7315a20 184 ack = i2c->write(start);
gholden3 5:28e4c7315a20 185 if(ack!=1){
gholden3 5:28e4c7315a20 186 return -1;
gholden3 5:28e4c7315a20 187 }
gholden3 5:28e4c7315a20 188
gholden3 5:28e4c7315a20 189 // Write the date set
gholden3 5:28e4c7315a20 190 int count = 0;
gholden3 5:28e4c7315a20 191 while(ack==1 && (count < length)){
gholden3 5:28e4c7315a20 192 ack = i2c->write(dataSet[count]);
gholden3 5:28e4c7315a20 193 count++;
gholden3 5:28e4c7315a20 194 }
gholden3 5:28e4c7315a20 195 // Stop the cmd
gholden3 5:28e4c7315a20 196 i2c->stop();
gholden3 5:28e4c7315a20 197
gholden3 5:28e4c7315a20 198 return count;
gholden3 5:28e4c7315a20 199 }
gholden3 5:28e4c7315a20 200
gholden3 5:28e4c7315a20 201
gholden3 5:28e4c7315a20 202 bool Mpr121::getProximityMode(){
gholden3 5:28e4c7315a20 203 if(this->read(ELE_CFG) > 0x0c)
gholden3 5:28e4c7315a20 204 return true;
gholden3 5:28e4c7315a20 205 else
gholden3 5:28e4c7315a20 206 return false;
gholden3 5:28e4c7315a20 207 }
gholden3 5:28e4c7315a20 208
gholden3 5:28e4c7315a20 209 void Mpr121::setProximityMode(bool mode){
gholden3 5:28e4c7315a20 210 this->write(ELE_CFG,0x00);
gholden3 5:28e4c7315a20 211 if(mode){
gholden3 5:28e4c7315a20 212 this->write(ELE_CFG,0x30); //Sense proximity from ALL pads
gholden3 5:28e4c7315a20 213 } else {
gholden3 5:28e4c7315a20 214 this->write(ELE_CFG,0x0c); //Sense touch, all 12 pads active.
gholden3 5:28e4c7315a20 215 }
gholden3 5:28e4c7315a20 216 }
gholden3 5:28e4c7315a20 217
gholden3 5:28e4c7315a20 218
gholden3 5:28e4c7315a20 219 int Mpr121::readTouchData(){
gholden3 5:28e4c7315a20 220 return this->read(0x00);
gholden3 5:28e4c7315a20 221 }