Demo of MP121 I2C touch sensors (playing piano keys)
Dependencies: 4DGL-uLCD-SE SDFileSystem Speaker mbed
Revision 0:81b352a233ca, committed 2014-10-22
- Comitter:
- jhawkins38
- Date:
- Wed Oct 22 01:17:25 2014 +0000
- Commit message:
- passed playPtr to play method in wave_play class
Changed in this revision
diff -r 000000000000 -r 81b352a233ca 4DGL-uLCD-SE.lib --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/4DGL-uLCD-SE.lib Wed Oct 22 01:17:25 2014 +0000 @@ -0,0 +1,1 @@ +http://developer.mbed.org/users/4180_1/code/4DGL-uLCD-SE/#e39a44de229a
diff -r 000000000000 -r 81b352a233ca SDFileSystem.lib --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/SDFileSystem.lib Wed Oct 22 01:17:25 2014 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/SDFileSystem/#7b35d1709458
diff -r 000000000000 -r 81b352a233ca Speaker.lib --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/Speaker.lib Wed Oct 22 01:17:25 2014 +0000 @@ -0,0 +1,1 @@ +http://developer.mbed.org/users/zchen311/code/Speaker/#41292907c9cb
diff -r 000000000000 -r 81b352a233ca main.cpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/main.cpp Wed Oct 22 01:17:25 2014 +0000 @@ -0,0 +1,273 @@ +#include <mbed.h> +#include <mpr121.h> +#include "uLCD_4DGL.h" +#include "Speaker.h" +#include "SDFileSystem.h" +#include "wave_player.h" + +DigitalOut led1(LED1); +DigitalOut led2(LED2); +DigitalOut led3(LED3); +DigitalOut led4(LED4); + +SDFileSystem sd(p5, p6, p7, p8,"sd"); //SD card + +uLCD_4DGL uLCD(p13,p14,p11); + +AnalogOut DACout(p18); +wave_player waver(&DACout); + + +// Create the interrupt receiver object on pin 26 +InterruptIn interrupt(p26); +InterruptIn pardon(p25); +// Setup the i2c bus on pins 9 and 10 +I2C i2c(p9, p10); +I2C i2c2(p28, p27); +// Setup the Mpr121: +// constructor(i2c object, i2c address of the mpr121) +Mpr121 mpr121(&i2c, Mpr121::ADD_VSS); +Mpr121 pad(&i2c2, Mpr121::ADD_VSS); + +//Speaker mySpeaker(p21); + +int key_code; +int Past_code; +int Past_code2; +bool PlayPtr; + +// Key hit/release interrupt routine for 1st touchpad +void fallInterrupt() { + key_code=77; + Past_code=77; + int value=mpr121.read(0x00); + value +=mpr121.read(0x01)<<8; + + + // puts key number out to LEDs for demo + for(int i=0; i<12; i++) + { + + if(((value>>i)&0x01) == 1) + { + key_code = i; + } + + } + + uLCD.locate(1,2); + uLCD.printf("%2D",key_code); + uLCD.cls(); + uLCD.printf("\n%2D\n", key_code); + uLCD.printf("\n%2D\n", Past_code); + if(key_code != Past_code) + { + PlayPtr = false; + } + else + { + PlayPtr = true; + } + Past_code = key_code; + + +} + +//sets up interrupts for 2nd toucpad +void fallInterrupt2() { + key_code=77; + Past_code2=77; + int value2=pad.read(0x00); + value2 +=pad.read(0x01)<<8; + + // puts key number out to LEDs for demo + for(int j=0; j<12; j++) + { + + if(((value2>>j)&0x01) == 1) + { + key_code= j +12; + + } + } + + if(key_code != Past_code2) + { + PlayPtr = false; + } + else + { + PlayPtr = true; + } + Past_code2 = key_code; + + + uLCD.locate(1,3); + uLCD.printf("%2D",key_code); + + +} + +int main() { + pardon.fall(&fallInterrupt2); + pardon.mode(PullUp); + interrupt.fall(&fallInterrupt); + interrupt.mode(PullUp); + + FILE *wave_file; + + while(1) + { + switch(key_code) //uses a case for each individual touch sensor + { + case 0: + //mySpeaker.PlayNote(969.0, 0.5, 0.5); + wave_file = fopen("/sd/piano_G.wav","r"); + waver.play(wave_file, &PlayPtr); + fclose(wave_file); + break; + case 1: + //mySpeaker.PlayNote(200.0, 0.1, 0.1); + wave_file = fopen("/sd/piano_F_sharp.wav","r"); + waver.play(wave_file, &PlayPtr); + fclose(wave_file); + led1 = 1; + break; + case 2: + //mySpeaker.PlayNote(300.0, 0.1, 0.1); + wave_file = fopen("/sd/piano_B.wav","r"); + waver.play(wave_file, &PlayPtr); + fclose(wave_file); + break; + case 3: + //mySpeaker.PlayNote(500.0, 0.15, 0.1); + wave_file = fopen("/sd/piano_A_sharp.wav","r"); + waver.play(wave_file, &PlayPtr); + fclose(wave_file); + break; + case 4: + //mySpeaker.PlayNote(700.0, 0.15, 0.1); + wave_file = fopen("/sd/Gb3.wav","r"); + waver.play(wave_file, &PlayPtr); + fclose(wave_file); + break; + case 5: + //mySpeaker.PlayNote(600.0, 0.15, 0.1); + wave_file = fopen("/sd/G3.wav","r"); + waver.play(wave_file, &PlayPtr); + fclose(wave_file); + break; + case 6: + //mySpeaker.PlayNote(969.0, 0.5, 0.5); + wave_file = fopen("/sd/F3.wav","r"); + waver.play(wave_file, &PlayPtr); + fclose(wave_file); + break; + case 7: + //mySpeaker.PlayNote(161.0, 0.25, 0.01); + wave_file = fopen("/sd/Eb4.wav","r"); + waver.play(wave_file, &PlayPtr); + fclose(wave_file); + break; + case 8: + //mySpeaker.PlayNote(869.0, 0.5, 0.5); + wave_file = fopen("/sd/Eb3.wav","r"); + waver.play(wave_file, &PlayPtr); + fclose(wave_file); + break; + case 9: + //mySpeaker.PlayNote(769.0, 0.5, 0.5); + wave_file = fopen("/sd/E3.wav","r"); + waver.play(wave_file, &PlayPtr); + fclose(wave_file); + break; + case 10: + //mySpeaker.PlayNote(669.0, 0.5, 0.5); + wave_file = fopen("/sd/Db4.wav","r"); + waver.play(wave_file, &PlayPtr); + fclose(wave_file); + break; + case 11: + //mySpeaker.PlayNote(469.0, 0.5, 0.5); + wave_file = fopen("/sd/Db3.wav","r"); + waver.play(wave_file, &PlayPtr); + fclose(wave_file); + break; + case 12: + //mySpeaker.PlayNote(969.0, 0.5, 0.5); + wave_file = fopen("/sd/D4.wav","r"); + waver.play(wave_file, &PlayPtr); + fclose(wave_file); + break; + case 13: + //mySpeaker.PlayNote(200.0, 0.1, 0.1); + wave_file = fopen("/sd/Db3.wav","r"); + waver.play(wave_file, &PlayPtr); + fclose(wave_file); + led1 = 1; + uLCD.printf("Hey"); + break; + case 14: + //mySpeaker.PlayNote(300.0, 0.1, 0.1); + wave_file = fopen("/sd/C4.wav","r"); + waver.play(wave_file, &PlayPtr); + fclose(wave_file); + break; + case 15: + //mySpeaker.PlayNote(500.0, 0.15, 0.1); + wave_file = fopen("/sd/C3.wav","r"); + waver.play(wave_file, &PlayPtr); + fclose(wave_file); + break; + case 16: + //mySpeaker.PlayNote(700.0, 0.15, 0.1); + wave_file = fopen("/sd/Bb3.wav","r"); + waver.play(wave_file, &PlayPtr); + fclose(wave_file); + break; + case 17: + //mySpeaker.PlayNote(600.0, 0.15, 0.1); + wave_file = fopen("/sd/Bb2.wav","r"); + waver.play(wave_file, &PlayPtr); + fclose(wave_file); + break; + case 18: + //mySpeaker.PlayNote(969.0, 0.5, 0.5); + wave_file = fopen("/sd/B3.wav","r"); + waver.play(wave_file, &PlayPtr); + fclose(wave_file); + break; + case 19: + //mySpeaker.PlayNote(161.0, 0.25, 0.01); + wave_file = fopen("/sd/B2.wav","r"); + waver.play(wave_file, &PlayPtr); + fclose(wave_file); + break; + case 20: + //mySpeaker.PlayNote(869.0, 0.5, 0.5); + wave_file = fopen("/sd/Ab3.wav","r"); + waver.play(wave_file, &PlayPtr); + fclose(wave_file); + break; + case 21: + //mySpeaker.PlayNote(769.0, 0.5, 0.5); + wave_file = fopen("/sd/A3.wav","r"); + waver.play(wave_file, &PlayPtr); + fclose(wave_file); + break; + case 22: + //mySpeaker.PlayNote(669.0, 0.5, 0.5); + wave_file = fopen("/sd/C3.wav","r"); + waver.play(wave_file, &PlayPtr); + fclose(wave_file); + break; + case 23: + //mySpeaker.PlayNote(469.0, 0.5, 0.5); + wave_file = fopen("/sd/C4.wav","r"); + waver.play(wave_file, &PlayPtr); + fclose(wave_file); + break; + } + } +} +
diff -r 000000000000 -r 81b352a233ca mbed.bld --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Wed Oct 22 01:17:25 2014 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed/builds/552587b429a1 \ No newline at end of file
diff -r 000000000000 -r 81b352a233ca mpr121.cpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mpr121.cpp Wed Oct 22 01:17:25 2014 +0000 @@ -0,0 +1,221 @@ +/* +Copyright (c) 2011 Anthony Buckton (abuckton [at] blackink [dot} net {dot} au) + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in +all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN +THE SOFTWARE. +*/ + +#include <mbed.h> +#include <sstream> +#include <string> +#include <list> + +#include <mpr121.h> + +Mpr121::Mpr121(I2C *i2c, Address i2cAddress) +{ + this->i2c = i2c; + + address = i2cAddress; + + // Configure the MPR121 settings to default + this->configureSettings(); +} + + +void Mpr121::configureSettings() +{ + // Put the MPR into setup mode + this->write(ELE_CFG,0x00); + + // Electrode filters for when data is > baseline + unsigned char gtBaseline[] = { + 0x01, //MHD_R + 0x01, //NHD_R + 0x00, //NCL_R + 0x00 //FDL_R + }; + + writeMany(MHD_R,gtBaseline,4); + + // Electrode filters for when data is < baseline + unsigned char ltBaseline[] = { + 0x01, //MHD_F + 0x01, //NHD_F + 0xFF, //NCL_F + 0x02 //FDL_F + }; + + writeMany(MHD_F,ltBaseline,4); + + // Electrode touch and release thresholds + unsigned char electrodeThresholds[] = { + E_THR_T, // Touch Threshhold + E_THR_R // Release Threshold + }; + + for(int i=0; i<12; i++){ + int result = writeMany((ELE0_T+(i*2)),electrodeThresholds,2); + } + + // Proximity Settings + unsigned char proximitySettings[] = { + 0xff, //MHD_Prox_R + 0xff, //NHD_Prox_R + 0x00, //NCL_Prox_R + 0x00, //FDL_Prox_R + 0x01, //MHD_Prox_F + 0x01, //NHD_Prox_F + 0xFF, //NCL_Prox_F + 0xff, //FDL_Prox_F + 0x00, //NHD_Prox_T + 0x00, //NCL_Prox_T + 0x00 //NFD_Prox_T + }; + writeMany(MHDPROXR,proximitySettings,11); + + unsigned char proxThresh[] = { + PROX_THR_T, // Touch Threshold + PROX_THR_R // Release Threshold + }; + writeMany(EPROXTTH,proxThresh,2); + + this->write(FIL_CFG,0x04); + + // Set the electrode config to transition to active mode + this->write(ELE_CFG,0x0c); +} + +void Mpr121::setElectrodeThreshold(int electrode, unsigned char touch, unsigned char release){ + + if(electrode > 11) return; + + // Get the current mode + unsigned char mode = this->read(ELE_CFG); + + // Put the MPR into setup mode + this->write(ELE_CFG,0x00); + + // Write the new threshold + this->write((ELE0_T+(electrode*2)), touch); + this->write((ELE0_T+(electrode*2)+1), release); + + //Restore the operating mode + this->write(ELE_CFG, mode); +} + + +unsigned char Mpr121::read(int key){ + + unsigned char data[2]; + + //Start the command + i2c->start(); + + // Address the target (Write mode) + int ack1= i2c->write(address); + + // Set the register key to read + int ack2 = i2c->write(key); + + // Re-start for read of data + i2c->start(); + + // Re-send the target address in read mode + int ack3 = i2c->write(address+1); + + // Read in the result + data[0] = i2c->read(0); + + // Reset the bus + i2c->stop(); + + return data[0]; +} + + +int Mpr121::write(int key, unsigned char value){ + + //Start the command + i2c->start(); + + // Address the target (Write mode) + int ack1= i2c->write(address); + + // Set the register key to write + int ack2 = i2c->write(key); + + // Read in the result + int ack3 = i2c->write(value); + + // Reset the bus + i2c->stop(); + + return (ack1+ack2+ack3)-3; +} + + +int Mpr121::writeMany(int start, unsigned char* dataSet, int length){ + //Start the command + i2c->start(); + + // Address the target (Write mode) + int ack= i2c->write(address); + if(ack!=1){ + return -1; + } + + // Set the register key to write + ack = i2c->write(start); + if(ack!=1){ + return -1; + } + + // Write the date set + int count = 0; + while(ack==1 && (count < length)){ + ack = i2c->write(dataSet[count]); + count++; + } + // Stop the cmd + i2c->stop(); + + return count; +} + + +bool Mpr121::getProximityMode(){ + if(this->read(ELE_CFG) > 0x0c) + return true; + else + return false; +} + +void Mpr121::setProximityMode(bool mode){ + this->write(ELE_CFG,0x00); + if(mode){ + this->write(ELE_CFG,0x30); //Sense proximity from ALL pads + } else { + this->write(ELE_CFG,0x0c); //Sense touch, all 12 pads active. + } +} + + +int Mpr121::readTouchData(){ + return this->read(0x00); +} \ No newline at end of file
diff -r 000000000000 -r 81b352a233ca mpr121.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mpr121.h Wed Oct 22 01:17:25 2014 +0000 @@ -0,0 +1,157 @@ +/* +Copyright (c) 2011 Anthony Buckton (abuckton [at] blackink [dot} net {dot} au) + + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in +all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN +THE SOFTWARE. + + Parts written by Jim Lindblom of Sparkfun + Ported to mbed by A.Buckton, Feb 2011 +*/ + +#ifndef MPR121_H +#define MPR121_H + +//using namespace std; + +class Mpr121 +{ + +public: + // i2c Addresses, bit-shifted + enum Address { ADD_VSS = 0xb4,// ADD->VSS = 0x5a <-wiring on Sparkfun board + ADD_VDD = 0xb6,// ADD->VDD = 0x5b + ADD_SCL = 0xb8,// ADD->SDA = 0x5c + ADD_SDA = 0xba // ADD->SCL = 0x5d + }; + + // Real initialiser, takes the i2c address of the device. + Mpr121(I2C *i2c, Address i2cAddress); + + bool getProximityMode(); + + void setProximityMode(bool mode); + + int readTouchData(); + + unsigned char read(int key); + + int write(int address, unsigned char value); + int writeMany(int start, unsigned char* dataSet, int length); + + void setElectrodeThreshold(int electrodeId, unsigned char touchThreshold, unsigned char releaseThreshold); + +protected: + // Configures the MPR with standard settings. This is permitted to be overwritten by sub-classes. + void configureSettings(); + +private: + // The I2C bus instance. + I2C *i2c; + + // i2c address of this mpr121 + Address address; +}; + + +// MPR121 Register Defines +#define MHD_R 0x2B +#define NHD_R 0x2C +#define NCL_R 0x2D +#define FDL_R 0x2E +#define MHD_F 0x2F +#define NHD_F 0x30 +#define NCL_F 0x31 +#define FDL_F 0x32 +#define NHDT 0x33 +#define NCLT 0x34 +#define FDLT 0x35 +// Proximity sensing controls +#define MHDPROXR 0x36 +#define NHDPROXR 0x37 +#define NCLPROXR 0x38 +#define FDLPROXR 0x39 +#define MHDPROXF 0x3A +#define NHDPROXF 0x3B +#define NCLPROXF 0x3C +#define FDLPROXF 0x3D +#define NHDPROXT 0x3E +#define NCLPROXT 0x3F +#define FDLPROXT 0x40 +// Electrode Touch/Release thresholds +#define ELE0_T 0x41 +#define ELE0_R 0x42 +#define ELE1_T 0x43 +#define ELE1_R 0x44 +#define ELE2_T 0x45 +#define ELE2_R 0x46 +#define ELE3_T 0x47 +#define ELE3_R 0x48 +#define ELE4_T 0x49 +#define ELE4_R 0x4A +#define ELE5_T 0x4B +#define ELE5_R 0x4C +#define ELE6_T 0x4D +#define ELE6_R 0x4E +#define ELE7_T 0x4F +#define ELE7_R 0x50 +#define ELE8_T 0x51 +#define ELE8_R 0x52 +#define ELE9_T 0x53 +#define ELE9_R 0x54 +#define ELE10_T 0x55 +#define ELE10_R 0x56 +#define ELE11_T 0x57 +#define ELE11_R 0x58 +// Proximity Touch/Release thresholds +#define EPROXTTH 0x59 +#define EPROXRTH 0x5A +// Debounce configuration +#define DEB_CFG 0x5B +// AFE- Analogue Front End configuration +#define AFE_CFG 0x5C +// Filter configuration +#define FIL_CFG 0x5D +// Electrode configuration - transistions to "active mode" +#define ELE_CFG 0x5E + +#define GPIO_CTRL0 0x73 +#define GPIO_CTRL1 0x74 +#define GPIO_DATA 0x75 +#define GPIO_DIR 0x76 +#define GPIO_EN 0x77 +#define GPIO_SET 0x78 +#define GPIO_CLEAR 0x79 +#define GPIO_TOGGLE 0x7A +// Auto configration registers +#define AUTO_CFG_0 0x7B +#define AUTO_CFG_U 0x7D +#define AUTO_CFG_L 0x7E +#define AUTO_CFG_T 0x7F + +// Threshold defaults +// Electrode touch threshold +#define E_THR_T 0x0F +// Electrode release threshold +#define E_THR_R 0x0A +// Prox touch threshold +#define PROX_THR_T 0x02 +// Prox release threshold +#define PROX_THR_R 0x02 + +#endif
diff -r 000000000000 -r 81b352a233ca wave_player.lib --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/wave_player.lib Wed Oct 22 01:17:25 2014 +0000 @@ -0,0 +1,1 @@ +http://developer.mbed.org/users/jhawkins38/code/wave_player/#e9f07a617057