Nick H / Mbed 2 deprecated final_proj_rtos

ECE 4180 final project. Sound and Bluetooth activated coffee maker

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

mpr121.cpp@8:a9b5acc63388, 2019-12-06 (annotated)

Committer:
nhummel3
Date:
Fri Dec 06 13:10:47 2019 +0000
Revision:
8:a9b5acc63388
Parent:
6:e4aba042979b 
Temperature control and GUI added;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
nhummel3 6:e4aba042979b 1 /*
nhummel3 6:e4aba042979b 2 Copyright (c) 2011 Anthony Buckton (abuckton [at] blackink [dot} net {dot} au)
nhummel3 6:e4aba042979b 3
nhummel3 6:e4aba042979b 4 Permission is hereby granted, free of charge, to any person obtaining a copy
nhummel3 6:e4aba042979b 5 of this software and associated documentation files (the "Software"), to deal
nhummel3 6:e4aba042979b 6 in the Software without restriction, including without limitation the rights
nhummel3 6:e4aba042979b 7 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
nhummel3 6:e4aba042979b 8 copies of the Software, and to permit persons to whom the Software is
nhummel3 6:e4aba042979b 9 furnished to do so, subject to the following conditions:
nhummel3 6:e4aba042979b 10
nhummel3 6:e4aba042979b 11 The above copyright notice and this permission notice shall be included in
nhummel3 6:e4aba042979b 12 all copies or substantial portions of the Software.
nhummel3 6:e4aba042979b 13
nhummel3 6:e4aba042979b 14 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
nhummel3 6:e4aba042979b 15 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
nhummel3 6:e4aba042979b 16 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
nhummel3 6:e4aba042979b 17 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
nhummel3 6:e4aba042979b 18 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
nhummel3 6:e4aba042979b 19 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
nhummel3 6:e4aba042979b 20 THE SOFTWARE.
nhummel3 6:e4aba042979b 21 */
nhummel3 6:e4aba042979b 22
nhummel3 6:e4aba042979b 23 #include <mbed.h>
nhummel3 6:e4aba042979b 24 #include <sstream>
nhummel3 6:e4aba042979b 25 #include <string>
nhummel3 6:e4aba042979b 26 #include <list>
nhummel3 6:e4aba042979b 27
nhummel3 6:e4aba042979b 28 #include <mpr121.h>
nhummel3 6:e4aba042979b 29
nhummel3 6:e4aba042979b 30 Mpr121::Mpr121(I2C *i2c, Address i2cAddress)
nhummel3 6:e4aba042979b 31 {
nhummel3 6:e4aba042979b 32 this->i2c = i2c;
nhummel3 6:e4aba042979b 33
nhummel3 6:e4aba042979b 34 address = i2cAddress;
nhummel3 6:e4aba042979b 35
nhummel3 6:e4aba042979b 36 // Configure the MPR121 settings to default
nhummel3 6:e4aba042979b 37 this->configureSettings();
nhummel3 6:e4aba042979b 38 }
nhummel3 6:e4aba042979b 39
nhummel3 6:e4aba042979b 40
nhummel3 6:e4aba042979b 41 void Mpr121::configureSettings()
nhummel3 6:e4aba042979b 42 {
nhummel3 6:e4aba042979b 43 // Put the MPR into setup mode
nhummel3 6:e4aba042979b 44 this->write(ELE_CFG,0x00);
nhummel3 6:e4aba042979b 45
nhummel3 6:e4aba042979b 46 // Electrode filters for when data is > baseline
nhummel3 6:e4aba042979b 47 unsigned char gtBaseline[] = {
nhummel3 6:e4aba042979b 48 0x01, //MHD_R
nhummel3 6:e4aba042979b 49 0x01, //NHD_R
nhummel3 6:e4aba042979b 50 0x00, //NCL_R
nhummel3 6:e4aba042979b 51 0x00 //FDL_R
nhummel3 6:e4aba042979b 52 };
nhummel3 6:e4aba042979b 53
nhummel3 6:e4aba042979b 54 writeMany(MHD_R,gtBaseline,4);
nhummel3 6:e4aba042979b 55
nhummel3 6:e4aba042979b 56 // Electrode filters for when data is < baseline
nhummel3 6:e4aba042979b 57 unsigned char ltBaseline[] = {
nhummel3 6:e4aba042979b 58 0x01, //MHD_F
nhummel3 6:e4aba042979b 59 0x01, //NHD_F
nhummel3 6:e4aba042979b 60 0xFF, //NCL_F
nhummel3 6:e4aba042979b 61 0x02 //FDL_F
nhummel3 6:e4aba042979b 62 };
nhummel3 6:e4aba042979b 63
nhummel3 6:e4aba042979b 64 writeMany(MHD_F,ltBaseline,4);
nhummel3 6:e4aba042979b 65
nhummel3 6:e4aba042979b 66 // Electrode touch and release thresholds
nhummel3 6:e4aba042979b 67 unsigned char electrodeThresholds[] = {
nhummel3 6:e4aba042979b 68 E_THR_T, // Touch Threshhold
nhummel3 6:e4aba042979b 69 E_THR_R // Release Threshold
nhummel3 6:e4aba042979b 70 };
nhummel3 6:e4aba042979b 71
nhummel3 6:e4aba042979b 72 for(int i=0; i<12; i++){
nhummel3 6:e4aba042979b 73 int result = writeMany((ELE0_T+(i*2)),electrodeThresholds,2);
nhummel3 6:e4aba042979b 74 }
nhummel3 6:e4aba042979b 75
nhummel3 6:e4aba042979b 76 // Proximity Settings
nhummel3 6:e4aba042979b 77 unsigned char proximitySettings[] = {
nhummel3 6:e4aba042979b 78 0xff, //MHD_Prox_R
nhummel3 6:e4aba042979b 79 0xff, //NHD_Prox_R
nhummel3 6:e4aba042979b 80 0x00, //NCL_Prox_R
nhummel3 6:e4aba042979b 81 0x00, //FDL_Prox_R
nhummel3 6:e4aba042979b 82 0x01, //MHD_Prox_F
nhummel3 6:e4aba042979b 83 0x01, //NHD_Prox_F
nhummel3 6:e4aba042979b 84 0xFF, //NCL_Prox_F
nhummel3 6:e4aba042979b 85 0xff, //FDL_Prox_F
nhummel3 6:e4aba042979b 86 0x00, //NHD_Prox_T
nhummel3 6:e4aba042979b 87 0x00, //NCL_Prox_T
nhummel3 6:e4aba042979b 88 0x00 //NFD_Prox_T
nhummel3 6:e4aba042979b 89 };
nhummel3 6:e4aba042979b 90 writeMany(MHDPROXR,proximitySettings,11);
nhummel3 6:e4aba042979b 91
nhummel3 6:e4aba042979b 92 unsigned char proxThresh[] = {
nhummel3 6:e4aba042979b 93 PROX_THR_T, // Touch Threshold
nhummel3 6:e4aba042979b 94 PROX_THR_R // Release Threshold
nhummel3 6:e4aba042979b 95 };
nhummel3 6:e4aba042979b 96 writeMany(EPROXTTH,proxThresh,2);
nhummel3 6:e4aba042979b 97
nhummel3 6:e4aba042979b 98 this->write(FIL_CFG,0x04);
nhummel3 6:e4aba042979b 99
nhummel3 6:e4aba042979b 100 // Set the electrode config to transition to active mode
nhummel3 6:e4aba042979b 101 this->write(ELE_CFG,0x0c);
nhummel3 6:e4aba042979b 102 }
nhummel3 6:e4aba042979b 103
nhummel3 6:e4aba042979b 104 void Mpr121::setElectrodeThreshold(int electrode, unsigned char touch, unsigned char release){
nhummel3 6:e4aba042979b 105
nhummel3 6:e4aba042979b 106 if(electrode > 11) return;
nhummel3 6:e4aba042979b 107
nhummel3 6:e4aba042979b 108 // Get the current mode
nhummel3 6:e4aba042979b 109 unsigned char mode = this->read(ELE_CFG);
nhummel3 6:e4aba042979b 110
nhummel3 6:e4aba042979b 111 // Put the MPR into setup mode
nhummel3 6:e4aba042979b 112 this->write(ELE_CFG,0x00);
nhummel3 6:e4aba042979b 113
nhummel3 6:e4aba042979b 114 // Write the new threshold
nhummel3 6:e4aba042979b 115 this->write((ELE0_T+(electrode*2)), touch);
nhummel3 6:e4aba042979b 116 this->write((ELE0_T+(electrode*2)+1), release);
nhummel3 6:e4aba042979b 117
nhummel3 6:e4aba042979b 118 //Restore the operating mode
nhummel3 6:e4aba042979b 119 this->write(ELE_CFG, mode);
nhummel3 6:e4aba042979b 120 }
nhummel3 6:e4aba042979b 121
nhummel3 6:e4aba042979b 122
nhummel3 6:e4aba042979b 123 unsigned char Mpr121::read(int key){
nhummel3 6:e4aba042979b 124
nhummel3 6:e4aba042979b 125 unsigned char data[2];
nhummel3 6:e4aba042979b 126
nhummel3 6:e4aba042979b 127 //Start the command
nhummel3 6:e4aba042979b 128 i2c->start();
nhummel3 6:e4aba042979b 129
nhummel3 6:e4aba042979b 130 // Address the target (Write mode)
nhummel3 6:e4aba042979b 131 int ack1= i2c->write(address);
nhummel3 6:e4aba042979b 132
nhummel3 6:e4aba042979b 133 // Set the register key to read
nhummel3 6:e4aba042979b 134 int ack2 = i2c->write(key);
nhummel3 6:e4aba042979b 135
nhummel3 6:e4aba042979b 136 // Re-start for read of data
nhummel3 6:e4aba042979b 137 i2c->start();
nhummel3 6:e4aba042979b 138
nhummel3 6:e4aba042979b 139 // Re-send the target address in read mode
nhummel3 6:e4aba042979b 140 int ack3 = i2c->write(address+1);
nhummel3 6:e4aba042979b 141
nhummel3 6:e4aba042979b 142 // Read in the result
nhummel3 6:e4aba042979b 143 data[0] = i2c->read(0);
nhummel3 6:e4aba042979b 144
nhummel3 6:e4aba042979b 145 // Reset the bus
nhummel3 6:e4aba042979b 146 i2c->stop();
nhummel3 6:e4aba042979b 147
nhummel3 6:e4aba042979b 148 return data[0];
nhummel3 6:e4aba042979b 149 }
nhummel3 6:e4aba042979b 150
nhummel3 6:e4aba042979b 151
nhummel3 6:e4aba042979b 152 int Mpr121::write(int key, unsigned char value){
nhummel3 6:e4aba042979b 153
nhummel3 6:e4aba042979b 154 //Start the command
nhummel3 6:e4aba042979b 155 i2c->start();
nhummel3 6:e4aba042979b 156
nhummel3 6:e4aba042979b 157 // Address the target (Write mode)
nhummel3 6:e4aba042979b 158 int ack1= i2c->write(address);
nhummel3 6:e4aba042979b 159
nhummel3 6:e4aba042979b 160 // Set the register key to write
nhummel3 6:e4aba042979b 161 int ack2 = i2c->write(key);
nhummel3 6:e4aba042979b 162
nhummel3 6:e4aba042979b 163 // Read in the result
nhummel3 6:e4aba042979b 164 int ack3 = i2c->write(value);
nhummel3 6:e4aba042979b 165
nhummel3 6:e4aba042979b 166 // Reset the bus
nhummel3 6:e4aba042979b 167 i2c->stop();
nhummel3 6:e4aba042979b 168
nhummel3 6:e4aba042979b 169 return (ack1+ack2+ack3)-3;
nhummel3 6:e4aba042979b 170 }
nhummel3 6:e4aba042979b 171
nhummel3 6:e4aba042979b 172
nhummel3 6:e4aba042979b 173 int Mpr121::writeMany(int start, unsigned char* dataSet, int length){
nhummel3 6:e4aba042979b 174 //Start the command
nhummel3 6:e4aba042979b 175 i2c->start();
nhummel3 6:e4aba042979b 176
nhummel3 6:e4aba042979b 177 // Address the target (Write mode)
nhummel3 6:e4aba042979b 178 int ack= i2c->write(address);
nhummel3 6:e4aba042979b 179 if(ack!=1){
nhummel3 6:e4aba042979b 180 return -1;
nhummel3 6:e4aba042979b 181 }
nhummel3 6:e4aba042979b 182
nhummel3 6:e4aba042979b 183 // Set the register key to write
nhummel3 6:e4aba042979b 184 ack = i2c->write(start);
nhummel3 6:e4aba042979b 185 if(ack!=1){
nhummel3 6:e4aba042979b 186 return -1;
nhummel3 6:e4aba042979b 187 }
nhummel3 6:e4aba042979b 188
nhummel3 6:e4aba042979b 189 // Write the date set
nhummel3 6:e4aba042979b 190 int count = 0;
nhummel3 6:e4aba042979b 191 while(ack==1 && (count < length)){
nhummel3 6:e4aba042979b 192 ack = i2c->write(dataSet[count]);
nhummel3 6:e4aba042979b 193 count++;
nhummel3 6:e4aba042979b 194 }
nhummel3 6:e4aba042979b 195 // Stop the cmd
nhummel3 6:e4aba042979b 196 i2c->stop();
nhummel3 6:e4aba042979b 197
nhummel3 6:e4aba042979b 198 return count;
nhummel3 6:e4aba042979b 199 }
nhummel3 6:e4aba042979b 200
nhummel3 6:e4aba042979b 201
nhummel3 6:e4aba042979b 202 bool Mpr121::getProximityMode(){
nhummel3 6:e4aba042979b 203 if(this->read(ELE_CFG) > 0x0c)
nhummel3 6:e4aba042979b 204 return true;
nhummel3 6:e4aba042979b 205 else
nhummel3 6:e4aba042979b 206 return false;
nhummel3 6:e4aba042979b 207 }
nhummel3 6:e4aba042979b 208
nhummel3 6:e4aba042979b 209 void Mpr121::setProximityMode(bool mode){
nhummel3 6:e4aba042979b 210 this->write(ELE_CFG,0x00);
nhummel3 6:e4aba042979b 211 if(mode){
nhummel3 6:e4aba042979b 212 this->write(ELE_CFG,0x30); //Sense proximity from ALL pads
nhummel3 6:e4aba042979b 213 } else {
nhummel3 6:e4aba042979b 214 this->write(ELE_CFG,0x0c); //Sense touch, all 12 pads active.
nhummel3 6:e4aba042979b 215 }
nhummel3 6:e4aba042979b 216 }
nhummel3 6:e4aba042979b 217
nhummel3 6:e4aba042979b 218
nhummel3 6:e4aba042979b 219 int Mpr121::readTouchData(){
nhummel3 6:e4aba042979b 220 return this->read(0x00);
nhummel3 6:e4aba042979b 221 }