Lab3_1 - Bop-It Game

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Bop-It Game

Dependencies: TextLCD mbed ADXL345 VS1053b

mpr121.cpp@0:d16ac399135a, 2011-10-19 (annotated)

Committer:: jdumond3
Date:: Wed Oct 19 18:04:48 2011 +0000
Revision:: 0:d16ac399135a

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User	Revision	Line number	New contents of line
jdumond3	0:d16ac399135a	1	/*
jdumond3	0:d16ac399135a	2	Copyright (c) 2011 Anthony Buckton (abuckton [at] blackink [dot} net {dot} au)
jdumond3	0:d16ac399135a	3
jdumond3	0:d16ac399135a	4	Permission is hereby granted, free of charge, to any person obtaining a copy
jdumond3	0:d16ac399135a	5	of this software and associated documentation files (the "Software"), to deal
jdumond3	0:d16ac399135a	6	in the Software without restriction, including without limitation the rights
jdumond3	0:d16ac399135a	7	to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
jdumond3	0:d16ac399135a	8	copies of the Software, and to permit persons to whom the Software is
jdumond3	0:d16ac399135a	9	furnished to do so, subject to the following conditions:
jdumond3	0:d16ac399135a	10
jdumond3	0:d16ac399135a	11	The above copyright notice and this permission notice shall be included in
jdumond3	0:d16ac399135a	12	all copies or substantial portions of the Software.
jdumond3	0:d16ac399135a	13
jdumond3	0:d16ac399135a	14	THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
jdumond3	0:d16ac399135a	15	IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
jdumond3	0:d16ac399135a	16	FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
jdumond3	0:d16ac399135a	17	AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
jdumond3	0:d16ac399135a	18	LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
jdumond3	0:d16ac399135a	19	OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
jdumond3	0:d16ac399135a	20	THE SOFTWARE.
jdumond3	0:d16ac399135a	21	*/
jdumond3	0:d16ac399135a	22
jdumond3	0:d16ac399135a	23	#include <mbed.h>
jdumond3	0:d16ac399135a	24	#include <sstream>
jdumond3	0:d16ac399135a	25	#include <string>
jdumond3	0:d16ac399135a	26	#include <list>
jdumond3	0:d16ac399135a	27
jdumond3	0:d16ac399135a	28	#include <mpr121.h>
jdumond3	0:d16ac399135a	29
jdumond3	0:d16ac399135a	30	Mpr121::Mpr121(I2C *i2c, Address i2cAddress)
jdumond3	0:d16ac399135a	31	{
jdumond3	0:d16ac399135a	32	this->i2c = i2c;
jdumond3	0:d16ac399135a	33
jdumond3	0:d16ac399135a	34	address = i2cAddress;
jdumond3	0:d16ac399135a	35
jdumond3	0:d16ac399135a	36	// Configure the MPR121 settings to default
jdumond3	0:d16ac399135a	37	this->configureSettings();
jdumond3	0:d16ac399135a	38	}
jdumond3	0:d16ac399135a	39
jdumond3	0:d16ac399135a	40
jdumond3	0:d16ac399135a	41	void Mpr121::configureSettings()
jdumond3	0:d16ac399135a	42	{
jdumond3	0:d16ac399135a	43	// Put the MPR into setup mode
jdumond3	0:d16ac399135a	44	this->write(ELE_CFG,0x00);
jdumond3	0:d16ac399135a	45
jdumond3	0:d16ac399135a	46	// Electrode filters for when data is > baseline
jdumond3	0:d16ac399135a	47	unsigned char gtBaseline[] = {
jdumond3	0:d16ac399135a	48	0x01, //MHD_R
jdumond3	0:d16ac399135a	49	0x01, //NHD_R
jdumond3	0:d16ac399135a	50	0x00, //NCL_R
jdumond3	0:d16ac399135a	51	0x00 //FDL_R
jdumond3	0:d16ac399135a	52	};
jdumond3	0:d16ac399135a	53
jdumond3	0:d16ac399135a	54	writeMany(MHD_R,gtBaseline,4);
jdumond3	0:d16ac399135a	55
jdumond3	0:d16ac399135a	56	// Electrode filters for when data is < baseline
jdumond3	0:d16ac399135a	57	unsigned char ltBaseline[] = {
jdumond3	0:d16ac399135a	58	0x01, //MHD_F
jdumond3	0:d16ac399135a	59	0x01, //NHD_F
jdumond3	0:d16ac399135a	60	0xFF, //NCL_F
jdumond3	0:d16ac399135a	61	0x02 //FDL_F
jdumond3	0:d16ac399135a	62	};
jdumond3	0:d16ac399135a	63
jdumond3	0:d16ac399135a	64	writeMany(MHD_F,ltBaseline,4);
jdumond3	0:d16ac399135a	65
jdumond3	0:d16ac399135a	66	// Electrode touch and release thresholds
jdumond3	0:d16ac399135a	67	unsigned char electrodeThresholds[] = {
jdumond3	0:d16ac399135a	68	E_THR_T, // Touch Threshhold
jdumond3	0:d16ac399135a	69	E_THR_R // Release Threshold
jdumond3	0:d16ac399135a	70	};
jdumond3	0:d16ac399135a	71
jdumond3	0:d16ac399135a	72	for(int i=0; i<12; i++){
jdumond3	0:d16ac399135a	73	int result = writeMany((ELE0_T+(i*2)),electrodeThresholds,2);
jdumond3	0:d16ac399135a	74	}
jdumond3	0:d16ac399135a	75
jdumond3	0:d16ac399135a	76	// Proximity Settings
jdumond3	0:d16ac399135a	77	unsigned char proximitySettings[] = {
jdumond3	0:d16ac399135a	78	0xff, //MHD_Prox_R
jdumond3	0:d16ac399135a	79	0xff, //NHD_Prox_R
jdumond3	0:d16ac399135a	80	0x00, //NCL_Prox_R
jdumond3	0:d16ac399135a	81	0x00, //FDL_Prox_R
jdumond3	0:d16ac399135a	82	0x01, //MHD_Prox_F
jdumond3	0:d16ac399135a	83	0x01, //NHD_Prox_F
jdumond3	0:d16ac399135a	84	0xFF, //NCL_Prox_F
jdumond3	0:d16ac399135a	85	0xff, //FDL_Prox_F
jdumond3	0:d16ac399135a	86	0x00, //NHD_Prox_T
jdumond3	0:d16ac399135a	87	0x00, //NCL_Prox_T
jdumond3	0:d16ac399135a	88	0x00 //NFD_Prox_T
jdumond3	0:d16ac399135a	89	};
jdumond3	0:d16ac399135a	90	writeMany(MHDPROXR,proximitySettings,11);
jdumond3	0:d16ac399135a	91
jdumond3	0:d16ac399135a	92	unsigned char proxThresh[] = {
jdumond3	0:d16ac399135a	93	PROX_THR_T, // Touch Threshold
jdumond3	0:d16ac399135a	94	PROX_THR_R // Release Threshold
jdumond3	0:d16ac399135a	95	};
jdumond3	0:d16ac399135a	96	writeMany(EPROXTTH,proxThresh,2);
jdumond3	0:d16ac399135a	97
jdumond3	0:d16ac399135a	98	this->write(FIL_CFG,0x04);
jdumond3	0:d16ac399135a	99
jdumond3	0:d16ac399135a	100	// Set the electrode config to transition to active mode
jdumond3	0:d16ac399135a	101	this->write(ELE_CFG,0x0c);
jdumond3	0:d16ac399135a	102	}
jdumond3	0:d16ac399135a	103
jdumond3	0:d16ac399135a	104	void Mpr121::setElectrodeThreshold(int electrode, unsigned char touch, unsigned char release){
jdumond3	0:d16ac399135a	105
jdumond3	0:d16ac399135a	106	if(electrode > 11) return;
jdumond3	0:d16ac399135a	107
jdumond3	0:d16ac399135a	108	// Get the current mode
jdumond3	0:d16ac399135a	109	unsigned char mode = this->read(ELE_CFG);
jdumond3	0:d16ac399135a	110
jdumond3	0:d16ac399135a	111	// Put the MPR into setup mode
jdumond3	0:d16ac399135a	112	this->write(ELE_CFG,0x00);
jdumond3	0:d16ac399135a	113
jdumond3	0:d16ac399135a	114	// Write the new threshold
jdumond3	0:d16ac399135a	115	this->write((ELE0_T+(electrode*2)), touch);
jdumond3	0:d16ac399135a	116	this->write((ELE0_T+(electrode*2)+1), release);
jdumond3	0:d16ac399135a	117
jdumond3	0:d16ac399135a	118	//Restore the operating mode
jdumond3	0:d16ac399135a	119	this->write(ELE_CFG, mode);
jdumond3	0:d16ac399135a	120	}
jdumond3	0:d16ac399135a	121
jdumond3	0:d16ac399135a	122
jdumond3	0:d16ac399135a	123	unsigned char Mpr121::read(int key){
jdumond3	0:d16ac399135a	124
jdumond3	0:d16ac399135a	125	unsigned char data[2];
jdumond3	0:d16ac399135a	126
jdumond3	0:d16ac399135a	127	//Start the command
jdumond3	0:d16ac399135a	128	i2c->start();
jdumond3	0:d16ac399135a	129
jdumond3	0:d16ac399135a	130	// Address the target (Write mode)
jdumond3	0:d16ac399135a	131	int ack1= i2c->write(address);
jdumond3	0:d16ac399135a	132
jdumond3	0:d16ac399135a	133	// Set the register key to read
jdumond3	0:d16ac399135a	134	int ack2 = i2c->write(key);
jdumond3	0:d16ac399135a	135
jdumond3	0:d16ac399135a	136	// Re-start for read of data
jdumond3	0:d16ac399135a	137	i2c->start();
jdumond3	0:d16ac399135a	138
jdumond3	0:d16ac399135a	139	// Re-send the target address in read mode
jdumond3	0:d16ac399135a	140	int ack3 = i2c->write(address+1);
jdumond3	0:d16ac399135a	141
jdumond3	0:d16ac399135a	142	// Read in the result
jdumond3	0:d16ac399135a	143	data[0] = i2c->read(0);
jdumond3	0:d16ac399135a	144
jdumond3	0:d16ac399135a	145	// Reset the bus
jdumond3	0:d16ac399135a	146	i2c->stop();
jdumond3	0:d16ac399135a	147
jdumond3	0:d16ac399135a	148	return data[0];
jdumond3	0:d16ac399135a	149	}
jdumond3	0:d16ac399135a	150
jdumond3	0:d16ac399135a	151
jdumond3	0:d16ac399135a	152	int Mpr121::write(int key, unsigned char value){
jdumond3	0:d16ac399135a	153
jdumond3	0:d16ac399135a	154	//Start the command
jdumond3	0:d16ac399135a	155	i2c->start();
jdumond3	0:d16ac399135a	156
jdumond3	0:d16ac399135a	157	// Address the target (Write mode)
jdumond3	0:d16ac399135a	158	int ack1= i2c->write(address);
jdumond3	0:d16ac399135a	159
jdumond3	0:d16ac399135a	160	// Set the register key to write
jdumond3	0:d16ac399135a	161	int ack2 = i2c->write(key);
jdumond3	0:d16ac399135a	162
jdumond3	0:d16ac399135a	163	// Read in the result
jdumond3	0:d16ac399135a	164	int ack3 = i2c->write(value);
jdumond3	0:d16ac399135a	165
jdumond3	0:d16ac399135a	166	// Reset the bus
jdumond3	0:d16ac399135a	167	i2c->stop();
jdumond3	0:d16ac399135a	168
jdumond3	0:d16ac399135a	169	return (ack1+ack2+ack3)-3;
jdumond3	0:d16ac399135a	170	}
jdumond3	0:d16ac399135a	171
jdumond3	0:d16ac399135a	172
jdumond3	0:d16ac399135a	173	int Mpr121::writeMany(int start, unsigned char* dataSet, int length){
jdumond3	0:d16ac399135a	174	//Start the command
jdumond3	0:d16ac399135a	175	i2c->start();
jdumond3	0:d16ac399135a	176
jdumond3	0:d16ac399135a	177	// Address the target (Write mode)
jdumond3	0:d16ac399135a	178	int ack= i2c->write(address);
jdumond3	0:d16ac399135a	179	if(ack!=1){
jdumond3	0:d16ac399135a	180	return -1;
jdumond3	0:d16ac399135a	181	}
jdumond3	0:d16ac399135a	182
jdumond3	0:d16ac399135a	183	// Set the register key to write
jdumond3	0:d16ac399135a	184	ack = i2c->write(start);
jdumond3	0:d16ac399135a	185	if(ack!=1){
jdumond3	0:d16ac399135a	186	return -1;
jdumond3	0:d16ac399135a	187	}
jdumond3	0:d16ac399135a	188
jdumond3	0:d16ac399135a	189	// Write the date set
jdumond3	0:d16ac399135a	190	int count = 0;
jdumond3	0:d16ac399135a	191	while(ack==1 && (count < length)){
jdumond3	0:d16ac399135a	192	ack = i2c->write(dataSet[count]);
jdumond3	0:d16ac399135a	193	count++;
jdumond3	0:d16ac399135a	194	}
jdumond3	0:d16ac399135a	195	// Stop the cmd
jdumond3	0:d16ac399135a	196	i2c->stop();
jdumond3	0:d16ac399135a	197
jdumond3	0:d16ac399135a	198	return count;
jdumond3	0:d16ac399135a	199	}
jdumond3	0:d16ac399135a	200
jdumond3	0:d16ac399135a	201
jdumond3	0:d16ac399135a	202	bool Mpr121::getProximityMode(){
jdumond3	0:d16ac399135a	203	if(this->read(ELE_CFG) > 0x0c)
jdumond3	0:d16ac399135a	204	return true;
jdumond3	0:d16ac399135a	205	else
jdumond3	0:d16ac399135a	206	return false;
jdumond3	0:d16ac399135a	207	}
jdumond3	0:d16ac399135a	208
jdumond3	0:d16ac399135a	209	void Mpr121::setProximityMode(bool mode){
jdumond3	0:d16ac399135a	210	this->write(ELE_CFG,0x00);
jdumond3	0:d16ac399135a	211	if(mode){
jdumond3	0:d16ac399135a	212	this->write(ELE_CFG,0x30); //Sense proximity from ALL pads
jdumond3	0:d16ac399135a	213	} else {
jdumond3	0:d16ac399135a	214	this->write(ELE_CFG,0x0c); //Sense touch, all 12 pads active.
jdumond3	0:d16ac399135a	215	}
jdumond3	0:d16ac399135a	216	}
jdumond3	0:d16ac399135a	217
jdumond3	0:d16ac399135a	218
jdumond3	0:d16ac399135a	219	int Mpr121::readTouchData(){
jdumond3	0:d16ac399135a	220	return this->read(0x00);
jdumond3	0:d16ac399135a	221	}

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Type:	Program
Mbed OS support:	Mbed 2 deprecated
Created:	19 Oct 2011
Imports:	30
Forks:	0
Commits:	1
Dependents:	0
Dependencies:	4
Followers:	1

mpr121.cpp@0:d16ac399135a, 2011-10-19 (annotated)

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