Vishal Bharam / Mbed 2 deprecated slider_diatonic_v1

Added button interrupt to change from one octave to other

Dependencies:   SLCD TSI mbed

Fork of slider_diatonic_v1 by Stanley Cohen

slider_diatonic_v1.cpp@5:c047f46f8726, 2015-02-25 (annotated)

Committer:
vbharam
Date:
Wed Feb 25 18:30:23 2015 +0000
Revision:
5:c047f46f8726
Parent:
4:d59d946649b8 
Added timer interrupt;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
scohennm 2:7f347d6a6422 1 #include "mbed.h"
scohennm 2:7f347d6a6422 2 #include "SLCD.h"
scohennm 2:7f347d6a6422 3 #include "TSISensor.h"
scohennm 2:7f347d6a6422 4
scohennm 2:7f347d6a6422 5 #define CHANNELON 0
scohennm 2:7f347d6a6422 6 #define CHANNELOFF 1
scohennm 2:7f347d6a6422 7 #define LCDLEN 10
vbharam 5:c047f46f8726 8 #define DATATIME 50 //milli seccnds
vbharam 5:c047f46f8726 9 #define PUSHTIME 300 //milli seccnds
scohennm 2:7f347d6a6422 10 //LCD messages
scohennm 2:7f347d6a6422 11
vbharam 4:d59d946649b8 12 #define TONEARRAY
scohennm 2:7f347d6a6422 13
scohennm 2:7f347d6a6422 14 // Operating parameters
scohennm 2:7f347d6a6422 15 #define SIDETONE 700.0
scohennm 2:7f347d6a6422 16 #define TONEMIN 200.0
scohennm 2:7f347d6a6422 17 #define TONEINT 800.00 // So tone max is 1000
scohennm 2:7f347d6a6422 18 #define TONEON 0.50
scohennm 2:7f347d6a6422 19 #define TONEOFF 0.0
scohennm 2:7f347d6a6422 20 #define SPEEDAST 0
scohennm 2:7f347d6a6422 21 #define TONEAST 1
scohennm 3:f68e9cdfaf2d 22 #define NUMTONES 10
vbharam 5:c047f46f8726 23 #define NUMOCTS 2
scohennm 3:f68e9cdfaf2d 24 #define LEDPERIOD 0.001
scohennm 3:f68e9cdfaf2d 25 //#define PRINTDEBUG
scohennm 2:7f347d6a6422 26
scohennm 3:f68e9cdfaf2d 27 Serial pc(USBTX, USBRX);
scohennm 3:f68e9cdfaf2d 28
vbharam 5:c047f46f8726 29 // Array of array
vbharam 5:c047f46f8726 30 float diatonicScale[NUMOCTS][NUMTONES] = {{246.94, 261.63,293.66,329.63,349.23,392.00,440.00,493.88,523.25,587.33}, {659.25, 698.46, 783.99, 880.00, 987.77, 1046.50, 1174.66, 1318.51, 1396.91, 1567.98 }};
scohennm 2:7f347d6a6422 31 SLCD slcd; //define LCD display
scohennm 2:7f347d6a6422 32
scohennm 2:7f347d6a6422 33 TSISensor tsiScaling; // Capacitive sensor/slider
scohennm 2:7f347d6a6422 34
vbharam 5:c047f46f8726 35 //InterruptIn mybutton(PTC3); //push botton with internal pullup
scohennm 2:7f347d6a6422 36 PwmOut led(LED_RED);
scohennm 2:7f347d6a6422 37 DigitalOut outPin(PTC9); //J1-16
vbharam 5:c047f46f8726 38 // Right Switch set as a Digital Input
vbharam 5:c047f46f8726 39 DigitalIn buttonState(PTC3);
scohennm 2:7f347d6a6422 40 PwmOut soundOut(PTA13);
vbharam 5:c047f46f8726 41
vbharam 5:c047f46f8726 42 // Two timer Interrupts
scohennm 3:f68e9cdfaf2d 43 Timer dataTimer;
vbharam 5:c047f46f8726 44 Timer buttonTimer;
scohennm 2:7f347d6a6422 45 // Global scalars
scohennm 2:7f347d6a6422 46 char lcdData[LCDLEN];
scohennm 2:7f347d6a6422 47
scohennm 2:7f347d6a6422 48 float tonePeriod;
scohennm 2:7f347d6a6422 49 float toneFreq = SIDETONE;
scohennm 2:7f347d6a6422 50
vbharam 4:d59d946649b8 51 // Int used to switch between different octave
vbharam 5:c047f46f8726 52 int octaveState = 0;
vbharam 4:d59d946649b8 53
scohennm 2:7f347d6a6422 54 void LCDMessNoDwell(char *lMess){
scohennm 2:7f347d6a6422 55 slcd.Home();
scohennm 2:7f347d6a6422 56 slcd.clear();
scohennm 2:7f347d6a6422 57 slcd.printf(lMess);
scohennm 2:7f347d6a6422 58 }
scohennm 2:7f347d6a6422 59
vbharam 5:c047f46f8726 60 void diatonicAdjust( float scaling, int octaveState) {
vbharam 5:c047f46f8726 61 // octaveState here works as the index of array diatonicScale
vbharam 5:c047f46f8726 62
scohennm 2:7f347d6a6422 63 int tempInt;
scohennm 3:f68e9cdfaf2d 64 int scaleIndex;
scohennm 3:f68e9cdfaf2d 65 static int oldScaleIndex = 0;
scohennm 3:f68e9cdfaf2d 66 /* There appears to be a set up time for setting the PWM time period
scohennm 3:f68e9cdfaf2d 67 only do a nes set up if the indext changes.
scohennm 3:f68e9cdfaf2d 68 */
scohennm 3:f68e9cdfaf2d 69 scaleIndex = (int)(NUMTONES * scaling);
scohennm 3:f68e9cdfaf2d 70 if (scaleIndex != oldScaleIndex) {
vbharam 5:c047f46f8726 71 toneFreq = diatonicScale[octaveState][scaleIndex];
scohennm 3:f68e9cdfaf2d 72 tonePeriod = 1.0/toneFreq;
scohennm 3:f68e9cdfaf2d 73 soundOut.period(tonePeriod); // adjusting period
scohennm 3:f68e9cdfaf2d 74 soundOut.write(TONEON); // there is a setup time for both period and DF
scohennm 3:f68e9cdfaf2d 75 oldScaleIndex = scaleIndex;
scohennm 3:f68e9cdfaf2d 76 } else {
scohennm 3:f68e9cdfaf2d 77 return;
scohennm 3:f68e9cdfaf2d 78 }
scohennm 3:f68e9cdfaf2d 79 #ifdef PRINTDEBUG
scohennm 3:f68e9cdfaf2d 80 pc.printf(" %f,%d\n\r",scaling, scaleIndex );
scohennm 3:f68e9cdfaf2d 81 #endif
scohennm 2:7f347d6a6422 82 tempInt = (int)toneFreq;
scohennm 2:7f347d6a6422 83 sprintf (lcdData,"%4d",tempInt);
scohennm 2:7f347d6a6422 84 LCDMessNoDwell(lcdData);
scohennm 2:7f347d6a6422 85 return;
scohennm 2:7f347d6a6422 86 }
vbharam 4:d59d946649b8 87
vbharam 4:d59d946649b8 88
vbharam 4:d59d946649b8 89
scohennm 2:7f347d6a6422 90 void lightAdjust( float scaling) { // Control brightness of LED
scohennm 2:7f347d6a6422 91 float tempDutyFactor;
scohennm 2:7f347d6a6422 92
scohennm 3:f68e9cdfaf2d 93 tempDutyFactor = 1.0 - scaling; //LED is a sinking connection // anode is held at 5V
scohennm 3:f68e9cdfaf2d 94 led.write(tempDutyFactor); //adjusting duty factor
scohennm 2:7f347d6a6422 95 return;
scohennm 2:7f347d6a6422 96 }
scohennm 3:f68e9cdfaf2d 97
scohennm 2:7f347d6a6422 98 int main(){
scohennm 2:7f347d6a6422 99 int tempInt;
vbharam 4:d59d946649b8 100 float tempValue;
scohennm 2:7f347d6a6422 101 tonePeriod = 1.0/toneFreq;
scohennm 2:7f347d6a6422 102 soundOut.period(tonePeriod);
scohennm 3:f68e9cdfaf2d 103 led.period(tonePeriod);
scohennm 3:f68e9cdfaf2d 104 led.write(CHANNELOFF);
scohennm 3:f68e9cdfaf2d 105 outPin.write(CHANNELOFF);
vbharam 4:d59d946649b8 106 // set up interrrupts to be used later for taps
vbharam 5:c047f46f8726 107 // mybutton.fall(&pressed);
scohennm 2:7f347d6a6422 108
scohennm 2:7f347d6a6422 109 tempInt = (int)toneFreq;
scohennm 2:7f347d6a6422 110 sprintf (lcdData,"%4d",tempInt);
scohennm 2:7f347d6a6422 111 LCDMessNoDwell(lcdData);
scohennm 3:f68e9cdfaf2d 112 // Start data timer
scohennm 3:f68e9cdfaf2d 113 dataTimer.start();
scohennm 3:f68e9cdfaf2d 114 dataTimer.reset();
vbharam 5:c047f46f8726 115
vbharam 5:c047f46f8726 116 // Start button timer
vbharam 5:c047f46f8726 117 buttonTimer.start();
vbharam 5:c047f46f8726 118 buttonTimer.reset();
scohennm 3:f68e9cdfaf2d 119
scohennm 2:7f347d6a6422 120 while (true) {
vbharam 5:c047f46f8726 121 //Button and data Timers are checked at different times
vbharam 5:c047f46f8726 122 if (buttonTimer.read_ms() > PUSHTIME){ // check to see if enough time has passed
vbharam 5:c047f46f8726 123 // to button interrupt
vbharam 5:c047f46f8726 124 // If the pushbutton is pressed:
vbharam 5:c047f46f8726 125 if (buttonState == CHANNELON){
vbharam 5:c047f46f8726 126 octaveState++;
vbharam 5:c047f46f8726 127 octaveState = octaveState % NUMOCTS;
vbharam 5:c047f46f8726 128 sprintf (lcdData,"%4d",octaveState);
vbharam 5:c047f46f8726 129 LCDMessNoDwell(lcdData);
vbharam 5:c047f46f8726 130 }
vbharam 5:c047f46f8726 131 buttonTimer.reset();
vbharam 5:c047f46f8726 132 }
vbharam 5:c047f46f8726 133
scohennm 3:f68e9cdfaf2d 134 if (dataTimer.read_ms() > DATATIME){ // check to see if enough time has passed
scohennm 3:f68e9cdfaf2d 135 // to read the touch pad
scohennm 3:f68e9cdfaf2d 136 tempValue = tsiScaling.readPercentage();
scohennm 3:f68e9cdfaf2d 137 if(tempValue > 0) {
vbharam 5:c047f46f8726 138 soundOut.write(TONEON); // set duty factor to 50%
vbharam 5:c047f46f8726 139 diatonicAdjust(tempValue, octaveState);
scohennm 3:f68e9cdfaf2d 140 lightAdjust(tempValue);
scohennm 3:f68e9cdfaf2d 141 } else {
scohennm 3:f68e9cdfaf2d 142 soundOut.write(TONEOFF); // set dutyfactor to 0%
scohennm 3:f68e9cdfaf2d 143 LCDMessNoDwell("SOFF");
scohennm 3:f68e9cdfaf2d 144 }
scohennm 3:f68e9cdfaf2d 145 dataTimer.reset();
scohennm 3:f68e9cdfaf2d 146 }
scohennm 2:7f347d6a6422 147 } // while forever
scohennm 2:7f347d6a6422 148 }// end main