John Pinion / Mbed 2 deprecated 4180_Final_Design_Project

Bluetooth Enabled Keyboard/Synthesizer for mbed

Dependencies:   mbed 4DGL-uLCD-SE SDFileSystem mbed-rtos

main.cpp@6:68c6a50e1437, 2016-04-28 (annotated)

Committer:
jmpin
Date:
Thu Apr 28 18:21:52 2016 +0000
Revision:
6:68c6a50e1437
Parent:
5:afd67e985df0
Child:
7:d4c3260cb092
Added functions that generate the waveform samples and modify the envelope.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
jmpin 0:48311ffdfa96 1 #include "mbed.h"
jmpin 3:3aba1d783730 2 #include "SDFileSystem.h"
jmpin 6:68c6a50e1437 3 #include "rtos.h"
jmpin 6:68c6a50e1437 4 #include <vector>
jmpin 6:68c6a50e1437 5 #include "uLCD_4DGL.h"
jmpin 3:3aba1d783730 6 #include "synthesizer.h"
jmpin 0:48311ffdfa96 7 Serial Blue(p28,p27);
jmpin 0:48311ffdfa96 8 Serial PC(USBTX,USBRX);
jmpin 0:48311ffdfa96 9 DigitalOut myled(LED1);
jmpin 0:48311ffdfa96 10 DigitalOut myled4(LED4);
jmpin 3:3aba1d783730 11
jmpin 3:3aba1d783730 12 SDFileSystem sd(p5, p6, p7, p8, "sd"); //SD card setup
jmpin 3:3aba1d783730 13
jmpin 6:68c6a50e1437 14 Mutex mtx; //Mutex lock
jmpin 6:68c6a50e1437 15
jmpin 6:68c6a50e1437 16 uLCD_4DGL uLCD(p13,p14,p11); // serial tx, serial rx, reset pin;
jmpin 6:68c6a50e1437 17
jmpin 6:68c6a50e1437 18
jmpin 0:48311ffdfa96 19 //global variables for main and interrupt routine
jmpin 0:48311ffdfa96 20 volatile bool readyFlag = true;
jmpin 0:48311ffdfa96 21 volatile char keyPress;
jmpin 3:3aba1d783730 22 WaveType myWave = sine; // default to sine wave
jmpin 3:3aba1d783730 23 volatile int currentOctave = 4; // default to 4 because thats where middle C is
jmpin 3:3aba1d783730 24 volatile int currentAttackVal = 3; // values will range from 1-5, default to 3
jmpin 6:68c6a50e1437 25 volatile int currentDecayVal = 3; // values will range from 1-5, default to 3
jmpin 3:3aba1d783730 26 volatile int currentSustainVal = 3; // values will range from 1-5, default to 3
jmpin 3:3aba1d783730 27 volatile int currentReleaseVal = 3; // values will range from 1-5, default to 3
jmpin 6:68c6a50e1437 28 int *currentLookupTable; // pointer to the correct lookup table of values
jmpin 6:68c6a50e1437 29 int *currentAttackTable; // pointer to the correct attack coefficient table
jmpin 6:68c6a50e1437 30 int *currentDecayTable; // pointer to the correct decay coefficient table
jmpin 6:68c6a50e1437 31 int *currentSustainTable; // pointer to the correct sustain coefficient table
jmpin 6:68c6a50e1437 32 int *currentReleaseTable; // pointer to the correct release coefficient table
jmpin 6:68c6a50e1437 33 vector<double> sampleBuffer; // vector to hold samples of generated waveform
jmpin 6:68c6a50e1437 34 volatile int lookupTableIndex; // index used to find values in the lookup table for the waveforms
jmpin 6:68c6a50e1437 35 volatile int phaseAccumulator; // stores phase accumulator which is used to index into the lookup table
jmpin 6:68c6a50e1437 36 int num_samples = 256; // number of samples
jmpin 6:68c6a50e1437 37 int shift_factor = 0x01000000; // shifting factor
jmpin 6:68c6a50e1437 38 int sampling_frequency = 40000; // sampling frequency is 40kHz
jmpin 6:68c6a50e1437 39 volatile int frequencyTuner; // the frequency tuner used to increment the accumulator which indexes values in the lookup table
jmpin 6:68c6a50e1437 40 volatile int noteFreq; // the current frequency of the note being played
jmpin 6:68c6a50e1437 41 volatile int sustainAmplitude; // the desired amplitude of the sustain level
jmpin 5:afd67e985df0 42
jmpin 5:afd67e985df0 43 /* Coefficient Matrices Corresponding to Different Attack Values
jmpin 5:afd67e985df0 44 each matrix is comprised of 32 elements (256/8). The first matrix corresponds
jmpin 5:afd67e985df0 45 to an attack value of 1.
jmpin 5:afd67e985df0 46 */
jmpin 5:afd67e985df0 47
jmpin 6:68c6a50e1437 48 double attackVals5[32] = { //Approaches the maximum amplitude the quickest - corresponds to an attackValue of 5
jmpin 5:afd67e985df0 49 0, 0.275 , 0.55 , 0.7 ,
jmpin 5:afd67e985df0 50 0.8 , 0.85 , 0.9 , 0.91 ,
jmpin 5:afd67e985df0 51 0.92 , 0.93 , 0.939 , 0.948 ,
jmpin 5:afd67e985df0 52 0.956 , 0.963 , 0.969 , 0.974 ,
jmpin 5:afd67e985df0 53 0.978 , 0.982 , 0.986 , 0.989 ,
jmpin 5:afd67e985df0 54 0.991 , 0.992 , 0.993 , 0.994 ,
jmpin 5:afd67e985df0 55 0.995 , 0.996 , 0.997 , 0.998 ,
jmpin 5:afd67e985df0 56 0.9985 , 0.999 , 0.9995 , 1
jmpin 5:afd67e985df0 57 };
jmpin 6:68c6a50e1437 58 double attackVals4[32] = { //Corresponds to an attackValue of 4
jmpin 5:afd67e985df0 59 0 , 0.18 , 0.38 , 0.58 ,
jmpin 5:afd67e985df0 60 0.66 , 0.69 , 0.72 , 0.74 ,
jmpin 5:afd67e985df0 61 0.76 , 0.78 , 0.795 , 0.81 ,
jmpin 5:afd67e985df0 62 0.825 , 0.84 , 0.85 , 0.86 ,
jmpin 5:afd67e985df0 63 0.87 , 0.88 , 0.89 , 0.9 ,
jmpin 5:afd67e985df0 64 0.91 , 0.92 , 0.93 , 0.94 ,
jmpin 5:afd67e985df0 65 0.95 , 0.96 , 0.97 , 0.98 ,
jmpin 5:afd67e985df0 66 0.985 , 0.99 , 0.995 , 1
jmpin 5:afd67e985df0 67 };
jmpin 6:68c6a50e1437 68 double attackVals3[32] = { //Corresponds to an attackValue of 3
jmpin 5:afd67e985df0 69 0 , 0.09 , 0.18 , 0.27 ,
jmpin 5:afd67e985df0 70 0.35 , 0.43 , 0.5 , 0.57 ,
jmpin 5:afd67e985df0 71 0.61 , 0.65 , 0.68 , 0.71 ,
jmpin 5:afd67e985df0 72 0.74 , 0.76 , 0.78 , 0.8 ,
jmpin 5:afd67e985df0 73 0.82 , 0.84 , 0.86 , 0.88 ,
jmpin 5:afd67e985df0 74 0.895 , 0.91 , 0.925 , 0.94 ,
jmpin 5:afd67e985df0 75 0.95 , 0.96 , 0.97 , 0.98 ,
jmpin 5:afd67e985df0 76 0.985 , 0.99 , 0.995 , 1
jmpin 5:afd67e985df0 77 };
jmpin 6:68c6a50e1437 78 double attackVals2[32] = { //Corresponds to an attackValue of 2
jmpin 5:afd67e985df0 79 0 , 0.06 , 0.12 , 0.18 ,
jmpin 5:afd67e985df0 80 0.23 , 0.28 , 0.32 , 0.36 ,
jmpin 5:afd67e985df0 81 0.4 , 0.44 , 0.48 , 0.52 ,
jmpin 5:afd67e985df0 82 0.55 , 0.58 , 0.61 , 0.64 ,
jmpin 5:afd67e985df0 83 0.67 , 0.695 , 0.72 , 0.745 ,
jmpin 5:afd67e985df0 84 0.77 , 0.795 , 0.82 , 0.845 ,
jmpin 5:afd67e985df0 85 0.87 , 0.895 , 0.92 , 0.945 ,
jmpin 5:afd67e985df0 86 0.965 , 0.985 , 0.995 , 1
jmpin 5:afd67e985df0 87 };
jmpin 6:68c6a50e1437 88 double attackVals1[32] = { //Approaches the mamimum amplitude the slowest, in a linear fashion - corresponds to an attackValue of 1
jmpin 5:afd67e985df0 89 0 , 0.032258065 , 0.064516129 , 0.096774194 ,
jmpin 5:afd67e985df0 90 0.129032258 , 0.161290323 , 0.193548387 , 0.225806452 ,
jmpin 5:afd67e985df0 91 0.258064516 , 0.290322581 , 0.322580645 , 0.35483871 ,
jmpin 5:afd67e985df0 92 0.387096774 , 0.419354839 , 0.451612903 , 0.483870968 ,
jmpin 5:afd67e985df0 93 0.516129032 , 0.548387097 , 0.580645161 , 0.612903226 ,
jmpin 5:afd67e985df0 94 0.64516129 , 0.677419355 , 0.709677419 , 0.741935484 ,
jmpin 5:afd67e985df0 95 0.774193548 , 0.806451613 , 0.838709677 , 0.870967742 ,
jmpin 5:afd67e985df0 96 0.903225806 , 0.935483871 , 0.967741935 , 1
jmpin 5:afd67e985df0 97 };
jmpin 5:afd67e985df0 98
jmpin 6:68c6a50e1437 99 double decayVals5[32] = {
jmpin 5:afd67e985df0 100 };
jmpin 6:68c6a50e1437 101 double decayVals4[32] = {
jmpin 5:afd67e985df0 102 };
jmpin 6:68c6a50e1437 103 double decayVals3[32] = {
jmpin 5:afd67e985df0 104 };
jmpin 6:68c6a50e1437 105 double decayVals2[32] = {
jmpin 5:afd67e985df0 106 };
jmpin 6:68c6a50e1437 107 double decayVals1[32] = {
jmpin 5:afd67e985df0 108 };
jmpin 6:68c6a50e1437 109 double sustainVals5[160] = { //Highest level of sustain, the note will cap out at an amplitude of 1 - corresponds to sustain value of 5
jmpin 5:afd67e985df0 110 .8 , .8 , .8 , .8 ,
jmpin 5:afd67e985df0 111 .8 , .8 , .8 , .8 ,
jmpin 5:afd67e985df0 112 .8 , .8 , .8 , .8 ,
jmpin 5:afd67e985df0 113 .8 , .8 , .8 , .8 ,
jmpin 5:afd67e985df0 114 .8 , .8 , .8 , .8 ,
jmpin 5:afd67e985df0 115 .8 , .8 , .8 , .8 ,
jmpin 5:afd67e985df0 116 .8 , .8 , .8 , .8 ,
jmpin 5:afd67e985df0 117 .8 , .8 , .8 , .8
jmpin 5:afd67e985df0 118 };
jmpin 6:68c6a50e1437 119 double sustainVal4[160] = { //Sustain value of 4
jmpin 5:afd67e985df0 120 .65 , .65 , .65 , .65 ,
jmpin 5:afd67e985df0 121 .65 , .65 , .65 , .65 ,
jmpin 5:afd67e985df0 122 .65 , .65 , .65 , .65 ,
jmpin 5:afd67e985df0 123 .65 , .65 , .65 , .65 ,
jmpin 5:afd67e985df0 124 .65 , .65 , .65 , .65 ,
jmpin 5:afd67e985df0 125 .65 , .65 , .65 , .65 ,
jmpin 5:afd67e985df0 126 .65 , .65 , .65 , .65 ,
jmpin 5:afd67e985df0 127 .65 , .65 , .65 , .65
jmpin 5:afd67e985df0 128 };
jmpin 6:68c6a50e1437 129 double sustainVals3[160] = { //Sustain value of 3
jmpin 5:afd67e985df0 130 .5 , .5 , .5 , .5 ,
jmpin 5:afd67e985df0 131 .5 , .5 , .5 , .5 ,
jmpin 5:afd67e985df0 132 .5 , .5 , .5 , .5 ,
jmpin 5:afd67e985df0 133 .5 , .5 , .5 , .5 ,
jmpin 5:afd67e985df0 134 .5 , .5 , .5 , .5 ,
jmpin 5:afd67e985df0 135 .5 , .5 , .5 , .5 ,
jmpin 5:afd67e985df0 136 .5 , .5 , .5 , .5 ,
jmpin 5:afd67e985df0 137 .5 , .5 , .5 , .5
jmpin 5:afd67e985df0 138 };
jmpin 6:68c6a50e1437 139 double sustainVals2[160] = { //Sustain value of 2
jmpin 5:afd67e985df0 140 .35 , .35 , .35 , .35 ,
jmpin 5:afd67e985df0 141 .35 , .35 , .35 , .35 ,
jmpin 5:afd67e985df0 142 .35 , .35 , .35 , .35 ,
jmpin 5:afd67e985df0 143 .35 , .35 , .35 , .35 ,
jmpin 5:afd67e985df0 144 .35 , .35 , .35 , .35 ,
jmpin 5:afd67e985df0 145 .35 , .35 , .35 , .35 ,
jmpin 5:afd67e985df0 146 .35 , .35 , .35 , .35 ,
jmpin 5:afd67e985df0 147 .35 , .35 , .35 , .35
jmpin 5:afd67e985df0 148 };
jmpin 6:68c6a50e1437 149 double sustainVals1[160] = { //Lowest level of sustain, the note will cap at at an amplitude of .2 - corresponds to sustain value of 1
jmpin 5:afd67e985df0 150 .20 , .20 , .20 , .20 ,
jmpin 5:afd67e985df0 151 .20 , .20 , .20 , .20 ,
jmpin 5:afd67e985df0 152 .20 , .20 , .20 , .20 ,
jmpin 5:afd67e985df0 153 .20 , .20 , .20 , .20 ,
jmpin 5:afd67e985df0 154 .20 , .20 , .20 , .20 ,
jmpin 5:afd67e985df0 155 .20 , .20 , .20 , .20 ,
jmpin 5:afd67e985df0 156 .20 , .20 , .20 , .20 ,
jmpin 5:afd67e985df0 157 .20 , .20 , .20 , .20
jmpin 6:68c6a50e1437 158 };
jmpin 6:68c6a50e1437 159 double releaseVals5[32] = {
jmpin 5:afd67e985df0 160 };
jmpin 6:68c6a50e1437 161 double releaseVals4[32] = {
jmpin 5:afd67e985df0 162 };
jmpin 6:68c6a50e1437 163 double releaseVals3[32] = {
jmpin 5:afd67e985df0 164 };
jmpin 6:68c6a50e1437 165 double releaseVals2[32] = {
jmpin 5:afd67e985df0 166 };
jmpin 6:68c6a50e1437 167 double releaseVals1[32] = {
jmpin 5:afd67e985df0 168 };
jmpin 5:afd67e985df0 169
jmpin 5:afd67e985df0 170 /* Values for the sine wave shaped waveform */
jmpin 6:68c6a50e1437 171 int sineTable[256] = {
jmpin 5:afd67e985df0 172 0x80,0x83,0x86,0x89,0x8c,0x8f,0x92,0x95,
jmpin 5:afd67e985df0 173 0x98,0x9c,0x9f,0xa2,0xa5,0xa8,0xab,0xae,
jmpin 5:afd67e985df0 174 0xb0,0xb3,0xb6,0xb9,0xbc,0xbf,0xc1,0xc4,
jmpin 5:afd67e985df0 175 0xc7,0xc9,0xcc,0xce,0xd1,0xd3,0xd5,0xd8,
jmpin 5:afd67e985df0 176 0xda,0xdc,0xde,0xe0,0xe2,0xe4,0xe6,0xe8,
jmpin 5:afd67e985df0 177 0xea,0xec,0xed,0xef,0xf0,0xf2,0xf3,0xf5,
jmpin 5:afd67e985df0 178 0xf6,0xf7,0xf8,0xf9,0xfa,0xfb,0xfc,0xfc,
jmpin 5:afd67e985df0 179 0xfd,0xfe,0xfe,0xff,0xff,0xff,0xff,0xff,
jmpin 5:afd67e985df0 180 0xff,0xff,0xff,0xff,0xff,0xff,0xfe,0xfe,
jmpin 5:afd67e985df0 181 0xfd,0xfc,0xfc,0xfb,0xfa,0xf9,0xf8,0xf7,
jmpin 5:afd67e985df0 182 0xf6,0xf5,0xf3,0xf2,0xf0,0xef,0xed,0xec,
jmpin 5:afd67e985df0 183 0xea,0xe8,0xe6,0xe4,0xe2,0xe0,0xde,0xdc,
jmpin 5:afd67e985df0 184 0xda,0xd8,0xd5,0xd3,0xd1,0xce,0xcc,0xc9,
jmpin 5:afd67e985df0 185 0xc7,0xc4,0xc1,0xbf,0xbc,0xb9,0xb6,0xb3,
jmpin 5:afd67e985df0 186 0xb0,0xae,0xab,0xa8,0xa5,0xa2,0x9f,0x9c,
jmpin 5:afd67e985df0 187 0x98,0x95,0x92,0x8f,0x8c,0x89,0x86,0x83,
jmpin 5:afd67e985df0 188 0x80,0x7c,0x79,0x76,0x73,0x70,0x6d,0x6a,
jmpin 5:afd67e985df0 189 0x67,0x63,0x60,0x5d,0x5a,0x57,0x54,0x51,
jmpin 5:afd67e985df0 190 0x4f,0x4c,0x49,0x46,0x43,0x40,0x3e,0x3b,
jmpin 5:afd67e985df0 191 0x38,0x36,0x33,0x31,0x2e,0x2c,0x2a,0x27,
jmpin 5:afd67e985df0 192 0x25,0x23,0x21,0x1f,0x1d,0x1b,0x19,0x17,
jmpin 5:afd67e985df0 193 0x15,0x13,0x12,0x10,0x0f,0x0d,0x0c,0x0a,
jmpin 5:afd67e985df0 194 0x09,0x08,0x07,0x06,0x05,0x04,0x03,0x03,
jmpin 5:afd67e985df0 195 0x02,0x01,0x01,0x00,0x00,0x00,0x00,0x00,
jmpin 5:afd67e985df0 196 0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x01,
jmpin 5:afd67e985df0 197 0x02,0x03,0x03,0x04,0x05,0x06,0x07,0x08,
jmpin 5:afd67e985df0 198 0x09,0x0a,0x0c,0x0d,0x0f,0x10,0x12,0x13,
jmpin 5:afd67e985df0 199 0x15,0x17,0x19,0x1b,0x1d,0x1f,0x21,0x23,
jmpin 5:afd67e985df0 200 0x25,0x27,0x2a,0x2c,0x2e,0x31,0x33,0x36,
jmpin 5:afd67e985df0 201 0x38,0x3b,0x3e,0x40,0x43,0x46,0x49,0x4c,
jmpin 5:afd67e985df0 202 0x4f,0x51,0x54,0x57,0x5a,0x5d,0x60,0x63,
jmpin 5:afd67e985df0 203 0x67,0x6a,0x6d,0x70,0x73,0x76,0x79,0x7c
jmpin 5:afd67e985df0 204 };
jmpin 5:afd67e985df0 205
jmpin 5:afd67e985df0 206 /* Values for the square shaped waveform */
jmpin 6:68c6a50e1437 207 int squareTable[256] = {
jmpin 5:afd67e985df0 208 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
jmpin 5:afd67e985df0 209 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
jmpin 5:afd67e985df0 210 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
jmpin 5:afd67e985df0 211 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
jmpin 5:afd67e985df0 212 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
jmpin 5:afd67e985df0 213 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
jmpin 5:afd67e985df0 214 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
jmpin 5:afd67e985df0 215 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
jmpin 5:afd67e985df0 216 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
jmpin 5:afd67e985df0 217 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
jmpin 5:afd67e985df0 218 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
jmpin 5:afd67e985df0 219 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
jmpin 5:afd67e985df0 220 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
jmpin 5:afd67e985df0 221 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
jmpin 5:afd67e985df0 222 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
jmpin 5:afd67e985df0 223 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
jmpin 5:afd67e985df0 224 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
jmpin 5:afd67e985df0 225 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
jmpin 5:afd67e985df0 226 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
jmpin 5:afd67e985df0 227 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
jmpin 5:afd67e985df0 228 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
jmpin 5:afd67e985df0 229 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
jmpin 5:afd67e985df0 230 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
jmpin 5:afd67e985df0 231 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
jmpin 5:afd67e985df0 232 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
jmpin 5:afd67e985df0 233 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
jmpin 5:afd67e985df0 234 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
jmpin 5:afd67e985df0 235 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
jmpin 5:afd67e985df0 236 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
jmpin 5:afd67e985df0 237 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
jmpin 5:afd67e985df0 238 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
jmpin 5:afd67e985df0 239 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff
jmpin 5:afd67e985df0 240 };
jmpin 5:afd67e985df0 241
jmpin 5:afd67e985df0 242 /* Values for the sawtooth shaped waveform */
jmpin 6:68c6a50e1437 243 int sawtoothTable[256] = {
jmpin 5:afd67e985df0 244 0x00,0x01,0x02,0x03,0x04,0x05,0x06,0x07,
jmpin 5:afd67e985df0 245 0x08,0x09,0x0a,0x0b,0x0c,0x0d,0x0e,0x0f,
jmpin 5:afd67e985df0 246 0x10,0x11,0x12,0x13,0x14,0x15,0x16,0x17,
jmpin 5:afd67e985df0 247 0x18,0x19,0x1a,0x1b,0x1c,0x1d,0x1e,0x1f,
jmpin 5:afd67e985df0 248 0x20,0x21,0x22,0x23,0x24,0x25,0x26,0x27,
jmpin 5:afd67e985df0 249 0x28,0x29,0x2a,0x2b,0x2c,0x2d,0x2e,0x2f,
jmpin 5:afd67e985df0 250 0x30,0x31,0x32,0x33,0x34,0x35,0x36,0x37,
jmpin 5:afd67e985df0 251 0x38,0x39,0x3a,0x3b,0x3c,0x3d,0x3e,0x3f,
jmpin 5:afd67e985df0 252 0x40,0x41,0x42,0x43,0x44,0x45,0x46,0x47,
jmpin 5:afd67e985df0 253 0x48,0x49,0x4a,0x4b,0x4c,0x4d,0x4e,0x4f,
jmpin 5:afd67e985df0 254 0x50,0x51,0x52,0x53,0x54,0x55,0x56,0x57,
jmpin 5:afd67e985df0 255 0x58,0x59,0x5a,0x5b,0x5c,0x5d,0x5e,0x5f,
jmpin 5:afd67e985df0 256 0x60,0x61,0x62,0x63,0x64,0x65,0x66,0x67,
jmpin 5:afd67e985df0 257 0x68,0x69,0x6a,0x6b,0x6c,0x6d,0x6e,0x6f,
jmpin 5:afd67e985df0 258 0x70,0x71,0x72,0x73,0x74,0x75,0x76,0x77,
jmpin 5:afd67e985df0 259 0x78,0x79,0x7a,0x7b,0x7c,0x7d,0x7e,0x7f,
jmpin 5:afd67e985df0 260 0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,
jmpin 5:afd67e985df0 261 0x88,0x89,0x8a,0x8b,0x8c,0x8d,0x8e,0x8f,
jmpin 5:afd67e985df0 262 0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,
jmpin 5:afd67e985df0 263 0x98,0x99,0x9a,0x9b,0x9c,0x9d,0x9e,0x9f,
jmpin 5:afd67e985df0 264 0xa0,0xa1,0xa2,0xa3,0xa4,0xa5,0xa6,0xa7,
jmpin 5:afd67e985df0 265 0xa8,0xa9,0xaa,0xab,0xac,0xad,0xae,0xaf,
jmpin 5:afd67e985df0 266 0xb0,0xb1,0xb2,0xb3,0xb4,0xb5,0xb6,0xb7,
jmpin 5:afd67e985df0 267 0xb8,0xb9,0xba,0xbb,0xbc,0xbd,0xbe,0xbf,
jmpin 5:afd67e985df0 268 0xc0,0xc1,0xc2,0xc3,0xc4,0xc5,0xc6,0xc7,
jmpin 5:afd67e985df0 269 0xc8,0xc9,0xca,0xcb,0xcc,0xcd,0xce,0xcf,
jmpin 5:afd67e985df0 270 0xd0,0xd1,0xd2,0xd3,0xd4,0xd5,0xd6,0xd7,
jmpin 5:afd67e985df0 271 0xd8,0xd9,0xda,0xdb,0xdc,0xdd,0xde,0xdf,
jmpin 5:afd67e985df0 272 0xe0,0xe1,0xe2,0xe3,0xe4,0xe5,0xe6,0xe7,
jmpin 5:afd67e985df0 273 0xe8,0xe9,0xea,0xeb,0xec,0xed,0xee,0xef,
jmpin 5:afd67e985df0 274 0xf0,0xf1,0xf2,0xf3,0xf4,0xf5,0xf6,0xf7,
jmpin 5:afd67e985df0 275 0xf8,0xf9,0xfa,0xfb,0xfc,0xfd,0xfe,0xff
jmpin 5:afd67e985df0 276 };
jmpin 5:afd67e985df0 277
jmpin 6:68c6a50e1437 278 int noteArray[7][7] = { // Array holding different note frequencies
jmpin 6:68c6a50e1437 279 C1 , D1 , E1 , F1 , G1 , A1 , B1 ,
jmpin 6:68c6a50e1437 280 C2 , D2 , E2 , F2 , G2 , A2 , B2,
jmpin 6:68c6a50e1437 281 C3 , D3 , E3 , F3 , G3 , A3 , B2 ,
jmpin 6:68c6a50e1437 282 C4 , D4 , E4 , F4 , G4 , A4 , B4 ,
jmpin 6:68c6a50e1437 283 C5 , D5 , E5 , F5 , G5 , A5 , B5 ,
jmpin 6:68c6a50e1437 284 C6 , D6 , E6 , F6 , G6 , A6 , B6 ,
jmpin 6:68c6a50e1437 285 C7 , D7 , E7 , F7 , G7 , A7 , B7
jmpin 6:68c6a50e1437 286 };
jmpin 5:afd67e985df0 287
jmpin 6:68c6a50e1437 288 void uLCD_Display_Thread(void const *args){
jmpin 6:68c6a50e1437 289 mtx.lock();
jmpin 6:68c6a50e1437 290 uLCD.locate(0,0);
jmpin 6:68c6a50e1437 291 uLCD.printf("Current Waveform Shape: %s\r\n",myWave);
jmpin 6:68c6a50e1437 292 uLCD.printf("Current Octave: %i\r\n",currentOctave);
jmpin 6:68c6a50e1437 293 uLCD.printf("Current Attack Value: %i\r\n",currentAttackVal);
jmpin 6:68c6a50e1437 294 uLCD.printf("Current Decay Value: %i\r\n",currentDecayVal);
jmpin 6:68c6a50e1437 295 uLCD.printf("Current Sustain Value: %i\r\n",currentSustainVal);
jmpin 6:68c6a50e1437 296 uLCD.printf("Current Release Value: %i\r\n",currentReleaseVal);
jmpin 6:68c6a50e1437 297 mtx.unlock();
jmpin 6:68c6a50e1437 298 Thread::wait(250);
jmpin 6:68c6a50e1437 299 }
jmpin 6:68c6a50e1437 300
jmpin 6:68c6a50e1437 301 void set_Frequency_Tuner(void) {
jmpin 6:68c6a50e1437 302 frequencyTuner = ((((int)noteFreq) * num_samples) *
jmpin 6:68c6a50e1437 303 (shift_factor / sampling_frequency));
jmpin 6:68c6a50e1437 304 }
jmpin 6:68c6a50e1437 305
jmpin 6:68c6a50e1437 306 void accumulator_Increment(void) {
jmpin 6:68c6a50e1437 307 phaseAccumulator += frequencyTuner;
jmpin 6:68c6a50e1437 308 }
jmpin 6:68c6a50e1437 309
jmpin 6:68c6a50e1437 310 void accumulator_reset(void) {
jmpin 6:68c6a50e1437 311 phaseAccumulator = 0;
jmpin 6:68c6a50e1437 312 }
jmpin 6:68c6a50e1437 313
jmpin 6:68c6a50e1437 314 void set_Note_Freq(int frequency){
jmpin 6:68c6a50e1437 315 accumulator_reset();
jmpin 6:68c6a50e1437 316 noteFreq = frequency;
jmpin 6:68c6a50e1437 317 set_Frequency_Tuner();
jmpin 6:68c6a50e1437 318 clear_buffer();
jmpin 6:68c6a50e1437 319 }
jmpin 6:68c6a50e1437 320
jmpin 6:68c6a50e1437 321 void change_Wave(const WaveType currentWave) {
jmpin 6:68c6a50e1437 322 switch(currentWave) {
jmpin 6:68c6a50e1437 323 case sine:
jmpin 6:68c6a50e1437 324 currentLookupTable = sineTable;
jmpin 6:68c6a50e1437 325 break;
jmpin 6:68c6a50e1437 326 case square:
jmpin 6:68c6a50e1437 327 currentLookupTable = squareTable;
jmpin 6:68c6a50e1437 328 break;
jmpin 6:68c6a50e1437 329 case sawtooth:
jmpin 6:68c6a50e1437 330 currentLookupTable = sawtoothTable;
jmpin 6:68c6a50e1437 331 break;
jmpin 6:68c6a50e1437 332 default:
jmpin 6:68c6a50e1437 333 break;
jmpin 6:68c6a50e1437 334 }
jmpin 6:68c6a50e1437 335 }
jmpin 6:68c6a50e1437 336
jmpin 6:68c6a50e1437 337 void change_Attack_Table(int attackVal)
jmpin 6:68c6a50e1437 338 {
jmpin 6:68c6a50e1437 339 switch(attackVal){
jmpin 6:68c6a50e1437 340 case 5:
jmpin 6:68c6a50e1437 341 currentAttackTable = attackVals5;
jmpin 6:68c6a50e1437 342 break;
jmpin 6:68c6a50e1437 343 case 4:
jmpin 6:68c6a50e1437 344 currentAttackTable = attackVals4;
jmpin 6:68c6a50e1437 345 break;
jmpin 6:68c6a50e1437 346 case 3:
jmpin 6:68c6a50e1437 347 currentAttackTable = attackVals3;
jmpin 6:68c6a50e1437 348 break;
jmpin 6:68c6a50e1437 349 case 2:
jmpin 6:68c6a50e1437 350 currentAttackTable = attackVals2;
jmpin 6:68c6a50e1437 351 break;
jmpin 6:68c6a50e1437 352 case 1:
jmpin 6:68c6a50e1437 353 currentAttackTable = attackVals1;
jmpin 6:68c6a50e1437 354 break;
jmpin 6:68c6a50e1437 355 default:
jmpin 6:68c6a50e1437 356 break;
jmpin 6:68c6a50e1437 357 }
jmpin 6:68c6a50e1437 358 }
jmpin 5:afd67e985df0 359
jmpin 6:68c6a50e1437 360 void change_Decay_Table(int decayVal)
jmpin 6:68c6a50e1437 361 {
jmpin 6:68c6a50e1437 362 switch(decayVal){
jmpin 6:68c6a50e1437 363 case 5:
jmpin 6:68c6a50e1437 364 currentDecayTable = decayVals5;
jmpin 6:68c6a50e1437 365 break;
jmpin 6:68c6a50e1437 366 case 4:
jmpin 6:68c6a50e1437 367 currentDecayTable = decayVals4;
jmpin 6:68c6a50e1437 368 break;
jmpin 6:68c6a50e1437 369 case 3:
jmpin 6:68c6a50e1437 370 currentDecayTable = decayVals3;
jmpin 6:68c6a50e1437 371 break;
jmpin 6:68c6a50e1437 372 case 2:
jmpin 6:68c6a50e1437 373 currentDecayTable = decayVals2;
jmpin 6:68c6a50e1437 374 break;
jmpin 6:68c6a50e1437 375 case 1:
jmpin 6:68c6a50e1437 376 currentDecayTable = decayVals1;
jmpin 6:68c6a50e1437 377 break;
jmpin 6:68c6a50e1437 378 default:
jmpin 6:68c6a50e1437 379 break;
jmpin 6:68c6a50e1437 380 }
jmpin 6:68c6a50e1437 381 }
jmpin 5:afd67e985df0 382
jmpin 6:68c6a50e1437 383 void change_Sustain_Table(int sustainVal)
jmpin 6:68c6a50e1437 384 {
jmpin 6:68c6a50e1437 385 switch(sustainVal){
jmpin 6:68c6a50e1437 386 case 5:
jmpin 6:68c6a50e1437 387 sustainAmplitude = .8;
jmpin 6:68c6a50e1437 388 currentSustainTable = sustainVals5;
jmpin 6:68c6a50e1437 389 break;
jmpin 6:68c6a50e1437 390 case 4:
jmpin 6:68c6a50e1437 391 sustainAmplitude = .65;
jmpin 6:68c6a50e1437 392 currentSustainTable = sustainVals4;
jmpin 6:68c6a50e1437 393 break;
jmpin 6:68c6a50e1437 394 case 3:
jmpin 6:68c6a50e1437 395 sustainAmplitude = .5;
jmpin 6:68c6a50e1437 396 currentSustainTable = sustainVals3;
jmpin 6:68c6a50e1437 397 break;
jmpin 6:68c6a50e1437 398 case 2:
jmpin 6:68c6a50e1437 399 sustainAmplitude = .35;
jmpin 6:68c6a50e1437 400 currentSustainTable = sustainVals2;
jmpin 6:68c6a50e1437 401 break;
jmpin 6:68c6a50e1437 402 case 1:
jmpin 6:68c6a50e1437 403 sustainAmplitude = .2;
jmpin 6:68c6a50e1437 404 currentSustainTable = sustainVals1;
jmpin 6:68c6a50e1437 405 break;
jmpin 6:68c6a50e1437 406 default:
jmpin 6:68c6a50e1437 407 break;
jmpin 6:68c6a50e1437 408 }
jmpin 6:68c6a50e1437 409 }
jmpin 6:68c6a50e1437 410
jmpin 6:68c6a50e1437 411 void change_Release_Table(int releaseVal)
jmpin 6:68c6a50e1437 412 {
jmpin 6:68c6a50e1437 413 switch(releaseVal){
jmpin 6:68c6a50e1437 414 case 5:
jmpin 6:68c6a50e1437 415 currentReleaseTable = releaseVals5;
jmpin 6:68c6a50e1437 416 break;
jmpin 6:68c6a50e1437 417 case 4:
jmpin 6:68c6a50e1437 418 currentReleaseTable = releaseVals4;
jmpin 6:68c6a50e1437 419 break;
jmpin 6:68c6a50e1437 420 case 3:
jmpin 6:68c6a50e1437 421 currentReleaseTable = releaseVals3;
jmpin 6:68c6a50e1437 422 break;
jmpin 6:68c6a50e1437 423 case 2:
jmpin 6:68c6a50e1437 424 currentReleaseTable = releaseVals2;
jmpin 6:68c6a50e1437 425 break;
jmpin 6:68c6a50e1437 426 case 1:
jmpin 6:68c6a50e1437 427 currentReleaseTable = releaseVals1;
jmpin 6:68c6a50e1437 428 break;
jmpin 6:68c6a50e1437 429 default:
jmpin 6:68c6a50e1437 430 break;
jmpin 6:68c6a50e1437 431 }
jmpin 6:68c6a50e1437 432 }
jmpin 6:68c6a50e1437 433
jmpin 6:68c6a50e1437 434 void clear_Buffer(void){
jmpin 6:68c6a50e1437 435 sampleBuffer.clear();
jmpin 6:68c6a50e1437 436 }
jmpin 6:68c6a50e1437 437
jmpin 6:68c6a50e1437 438 void buffer_Samples(void){
jmpin 6:68c6a50e1437 439 for(int j=0;j<num_samples;j++){
jmpin 6:68c6a50e1437 440 accumulator_Increment(); // Increment the phase accumulator
jmpin 6:68c6a50e1437 441 lookupTableIndex = phaseAccumulator >> 24; // Get address into wavetable
jmpin 6:68c6a50e1437 442 sampleBuffer.push_back(currentLookupTable[lookupTableIndex] / 255); // divide by 255 so that we get values between 0 and 1
jmpin 6:68c6a50e1437 443 }
jmpin 6:68c6a50e1437 444 }
jmpin 6:68c6a50e1437 445
jmpin 6:68c6a50e1437 446 void apply_Envelope(void){
jmpin 6:68c6a50e1437 447 int attack_range, decay_range, sustain_range, release_range;
jmpin 6:68c6a50e1437 448 attack_range = sampleBuffer.size() * (1/8); // The attack portion of the waveform will take (1/8) of the note's duration
jmpin 6:68c6a50e1437 449 decay_range = attack_range + (sampleBuffer.size() * (1/8)); // The decay portion of the waveform will take (1/8) of the note's duration
jmpin 6:68c6a50e1437 450 sustain_range = sustain_range + (sampleBuffer.size() * (5/8)); // The sustain portion of the waveform will take (5/8) of the note's duration
jmpin 6:68c6a50e1437 451 release_range = release_range + (sampleBuffer.size() * (1/8)); // The release portion of the waveform will take (1/8) of the note's duration
jmpin 6:68c6a50e1437 452 for(int i = 0; i < attack_range; i++)
jmpin 6:68c6a50e1437 453 {
jmpin 6:68c6a50e1437 454 sampleBuffer[i] = sampleBuffer[i] * currentAttackTable[i];
jmpin 6:68c6a50e1437 455 }
jmpin 6:68c6a50e1437 456 for(int k = attack_range; k < decay_range; k++)
jmpin 6:68c6a50e1437 457 {
jmpin 6:68c6a50e1437 458 sampleBuffer[k] = sampleBuffer[k] * currentDecayTable[k-attack_range];
jmpin 6:68c6a50e1437 459 }
jmpin 6:68c6a50e1437 460 for(int m = decay_range; m < sustain_range; m++)
jmpin 6:68c6a50e1437 461 {
jmpin 6:68c6a50e1437 462 sampleBuffer[m] = sampleBuffer[m] * currentSustainTable[m-decay_range];
jmpin 6:68c6a50e1437 463 }
jmpin 6:68c6a50e1437 464 for(int n = sustain_range; n < release_range; n++)
jmpin 6:68c6a50e1437 465 {
jmpin 6:68c6a50e1437 466 sampleBuffer[n] = sampleBuffer[n] * currentReleaseTable[n-sustain_range];
jmpin 6:68c6a50e1437 467 }
jmpin 6:68c6a50e1437 468 }
jmpin 5:afd67e985df0 469
jmpin 5:afd67e985df0 470
jmpin 5:afd67e985df0 471
jmpin 5:afd67e985df0 472
jmpin 5:afd67e985df0 473
jmpin 5:afd67e985df0 474
jmpin 5:afd67e985df0 475
jmpin 5:afd67e985df0 476
jmpin 5:afd67e985df0 477
jmpin 5:afd67e985df0 478
jmpin 0:48311ffdfa96 479 //Interrupt routine to parse message with one new character per serial RX interrupt
jmpin 0:48311ffdfa96 480 void parse_message()
jmpin 0:48311ffdfa96 481 {
jmpin 0:48311ffdfa96 482 keyPress = Blue.getc();
jmpin 0:48311ffdfa96 483 PC.putc(keyPress);
jmpin 0:48311ffdfa96 484 readyFlag = true;
jmpin 0:48311ffdfa96 485 PC.printf("\n\r Value of readyFlag is: %i",readyFlag);
jmpin 0:48311ffdfa96 486
jmpin 0:48311ffdfa96 487 //PC.printf("Value of keyPress is: %c\n\r",keyPress);
jmpin 0:48311ffdfa96 488 }
jmpin 3:3aba1d783730 489
jmpin 3:3aba1d783730 490
jmpin 3:3aba1d783730 491 /*
jmpin 3:3aba1d783730 492 This function writes which note was just played to a text file on the SDCard.
jmpin 3:3aba1d783730 493 The note played will be encoded in hexadecimal, as well as the octave, Attack Value,
jmpin 3:3aba1d783730 494 Delay Value, Sustain Value, and Release Value. The format of the bits will be as follows:
jmpin 3:3aba1d783730 495 | 3 bits | 3 bits | 3 bits | 3 bits | 3 bits | 3 bits |
jmpin 6:68c6a50e1437 496 | Attack | Decay | Susttain | Release | Octave | Note |
jmpin 3:3aba1d783730 497 For the 3 bits representing note, A will correspond to 1, B to 2, and so on.
jmpin 3:3aba1d783730 498 For example, if the lower 3 bits corresponding to note are 001, then the note is an A.
jmpin 3:3aba1d783730 499
jmpin 3:3aba1d783730 500 @param: The note that is being played/recorded into the text file
jmpin 3:3aba1d783730 501 */
jmpin 3:3aba1d783730 502
jmpin 3:3aba1d783730 503 void write_to_SDCard(char note)
jmpin 3:3aba1d783730 504 {
jmpin 6:68c6a50e1437 505 int AttackBits, SustainBits, DecayBits, ReleaseBits, OctaveBits, NoteBits;
jmpin 2:f06ba516b1ad 506
jmpin 3:3aba1d783730 507 AttackBits = currentAttackVal;
jmpin 6:68c6a50e1437 508 DecayBits = currentDecayVal;
jmpin 3:3aba1d783730 509 SustainBits = currentSustainVal;
jmpin 3:3aba1d783730 510 ReleaseBits = currentReleaseVal;
jmpin 3:3aba1d783730 511 OctaveBits = currentOctave;
jmpin 3:3aba1d783730 512 switch(note){
jmpin 3:3aba1d783730 513 case 'C':
jmpin 3:3aba1d783730 514 NoteBits = 3;
jmpin 3:3aba1d783730 515 break;
jmpin 3:3aba1d783730 516 case 'D':
jmpin 3:3aba1d783730 517 NoteBits = 4;
jmpin 3:3aba1d783730 518 break;
jmpin 3:3aba1d783730 519 case 'E':
jmpin 3:3aba1d783730 520 NoteBits = 5;
jmpin 3:3aba1d783730 521 break;
jmpin 3:3aba1d783730 522 case 'F':
jmpin 3:3aba1d783730 523 NoteBits = 6;
jmpin 3:3aba1d783730 524 break;
jmpin 3:3aba1d783730 525 case 'G':
jmpin 3:3aba1d783730 526 NoteBits = 7;
jmpin 3:3aba1d783730 527 break;
jmpin 3:3aba1d783730 528 case 'A':
jmpin 3:3aba1d783730 529 NoteBits = 1;
jmpin 3:3aba1d783730 530 break;
jmpin 3:3aba1d783730 531 case 'B':
jmpin 3:3aba1d783730 532 NoteBits = 2;
jmpin 3:3aba1d783730 533 break;
jmpin 3:3aba1d783730 534 default:
jmpin 3:3aba1d783730 535 NoteBits = 0;
jmpin 3:3aba1d783730 536 break;
jmpin 3:3aba1d783730 537 }
jmpin 3:3aba1d783730 538 int writeVal;
jmpin 6:68c6a50e1437 539 writeVal = (AttackBits << 15) | (DecayBits << 12) | (SustainBits << 9) | (ReleaseBits << 6) | (OctaveBits << 3) | (NoteBits);
jmpin 3:3aba1d783730 540
jmpin 3:3aba1d783730 541 FILE *fp = fopen("/sd/noteRecords/note_record_01.txt", "w");
jmpin 3:3aba1d783730 542 if(fp == NULL) {
jmpin 3:3aba1d783730 543 error("Could not open file for write\n");
jmpin 3:3aba1d783730 544 }
jmpin 3:3aba1d783730 545 fprintf(fp,"%X\r\n",writeVal); // writes value to the text file in hexadecimal
jmpin 3:3aba1d783730 546 fclose(fp);
jmpin 3:3aba1d783730 547 }
jmpin 3:3aba1d783730 548
jmpin 0:48311ffdfa96 549 int main()
jmpin 0:48311ffdfa96 550 {
jmpin 3:3aba1d783730 551 // make directory to hold the record of notes played
jmpin 3:3aba1d783730 552 mkdir("/sd/noteRecords", 0777);
jmpin 3:3aba1d783730 553
jmpin 3:3aba1d783730 554
jmpin 0:48311ffdfa96 555 //attach interrupt function for each new Bluetooth serial character
jmpin 0:48311ffdfa96 556 Blue.attach(&parse_message,Serial::RxIrq);
jmpin 0:48311ffdfa96 557 while(1) {
jmpin 0:48311ffdfa96 558 //check for a new button message ready
jmpin 3:3aba1d783730 559 if((keyPress == C_NOTE_KEY) && (readyFlag)){ // button Z pressed
jmpin 6:68c6a50e1437 560 set_Note_Freq(noteArray[currentOctave-1][0]);
jmpin 3:3aba1d783730 561 write_to_SDCard('C');
jmpin 0:48311ffdfa96 562 readyFlag = false;
jmpin 0:48311ffdfa96 563 // Play note that corresponds to Z
jmpin 0:48311ffdfa96 564 }
jmpin 3:3aba1d783730 565 else if((keyPress == D_NOTE_KEY) && (readyFlag)){ // button X pressed
jmpin 6:68c6a50e1437 566 set_Note_Freq(noteArray[currentOctave-1][1]);
jmpin 3:3aba1d783730 567 write_to_SDCard('D');
jmpin 4:406f59c6a1a6 568 readyFlag = false;
jmpin 0:48311ffdfa96 569 // Play note that corresponds to X
jmpin 0:48311ffdfa96 570 }
jmpin 3:3aba1d783730 571 else if((keyPress == E_NOTE_KEY) && (readyFlag)){ // button C pressed
jmpin 6:68c6a50e1437 572 set_Note_Freq(noteArray[currentOctave-1][2]);
jmpin 0:48311ffdfa96 573 // Play note that corresponds to C
jmpin 3:3aba1d783730 574 // Make note of which note was played in file on SD Card
jmpin 3:3aba1d783730 575 write_to_SDCard('E');
jmpin 4:406f59c6a1a6 576 readyFlag = false;
jmpin 3:3aba1d783730 577 }
jmpin 3:3aba1d783730 578 else if((keyPress == F_NOTE_KEY) && (readyFlag)){ // button V pressed
jmpin 6:68c6a50e1437 579 set_Note_Freq(noteArray[currentOctave-1][3]);
jmpin 0:48311ffdfa96 580 // Play note that corresponds to V
jmpin 3:3aba1d783730 581 // Make note of which note was played in file on SD Card
jmpin 3:3aba1d783730 582 write_to_SDCard('F');
jmpin 4:406f59c6a1a6 583 readyFlag = false;
jmpin 3:3aba1d783730 584 }
jmpin 3:3aba1d783730 585 else if((keyPress == G_NOTE_KEY) && (readyFlag)){ // button B pressed
jmpin 6:68c6a50e1437 586 set_Note_Freq(noteArray[currentOctave-1][4]);
jmpin 0:48311ffdfa96 587 // Play note that corresponds to B
jmpin 3:3aba1d783730 588 // Make note of which note was played in file on SD Card
jmpin 3:3aba1d783730 589 write_to_SDCard('G');
jmpin 4:406f59c6a1a6 590 readyFlag = false;
jmpin 3:3aba1d783730 591 }
jmpin 3:3aba1d783730 592 else if((keyPress == A_NOTE_KEY) && (readyFlag)){ // button N pressed
jmpin 6:68c6a50e1437 593 set_Note_Freq(noteArray[currentOctave][5]);
jmpin 6:68c6a50e1437 594 buffer_Samples();
jmpin 0:48311ffdfa96 595 // Play note that corresponds to N
jmpin 3:3aba1d783730 596 // Make note of which note was played in file on SD Card
jmpin 3:3aba1d783730 597 write_to_SDCard('A');
jmpin 4:406f59c6a1a6 598 readyFlag = false;
jmpin 3:3aba1d783730 599 }
jmpin 3:3aba1d783730 600 else if((keyPress == B_NOTE_KEY) && (readyFlag)){ // button M pressed
jmpin 6:68c6a50e1437 601 set_Note_Freq(noteArray[currentOctave][6]);
jmpin 0:48311ffdfa96 602 // Play note that corresponds to M
jmpin 3:3aba1d783730 603 // Make note of which note was played in file on SD Card
jmpin 3:3aba1d783730 604 write_to_SDCard('B');
jmpin 4:406f59c6a1a6 605 readyFlag = false;
jmpin 3:3aba1d783730 606 }
jmpin 2:f06ba516b1ad 607 else if((keyPress == RAISE_OCTAVE_KEY) && (readyFlag)){ // button O pressed
jmpin 0:48311ffdfa96 608 // Raise an octave
jmpin 6:68c6a50e1437 609 if(currentOctave < 7)
jmpin 2:f06ba516b1ad 610 currentOctave++;
jmpin 4:406f59c6a1a6 611 else
jmpin 4:406f59c6a1a6 612 printf("Cannot raise octave above 7.\r\n");
jmpin 6:68c6a50e1437 613 }
jmpin 2:f06ba516b1ad 614 else if((keyPress == LOWER_OCTAVE_KEY) && (readyFlag)){ // button L pressed
jmpin 2:f06ba516b1ad 615 // Lower an octave
jmpin 4:406f59c6a1a6 616 if(currentOctave > 1)
jmpin 2:f06ba516b1ad 617 currentOctave--;
jmpin 4:406f59c6a1a6 618 else
jmpin 4:406f59c6a1a6 619 printf("Cannot lower octave below 1.\r\n");
jmpin 2:f06ba516b1ad 620 }
jmpin 2:f06ba516b1ad 621 else if((keyPress == RAISE_ATTACK_KEY) && (readyFlag)){ // button Q pressed
jmpin 0:48311ffdfa96 622 // Raise Attack Value
jmpin 6:68c6a50e1437 623 if(currentAttackVal < 5){
jmpin 2:f06ba516b1ad 624 currentAttackVal++;
jmpin 6:68c6a50e1437 625 change_Attack_Table(currentAttackVal);
jmpin 6:68c6a50e1437 626 }
jmpin 4:406f59c6a1a6 627 else
jmpin 4:406f59c6a1a6 628 printf("Cannot raise value above 5.\r\n");
jmpin 2:f06ba516b1ad 629 }
jmpin 2:f06ba516b1ad 630 else if((keyPress == LOWER_ATTACK_KEY) && (readyFlag)){ // button A pressed
jmpin 0:48311ffdfa96 631 // Lower Attack Value
jmpin 6:68c6a50e1437 632 if(currentAttackVal > 1){
jmpin 2:f06ba516b1ad 633 currentAttackVal--;
jmpin 6:68c6a50e1437 634 change_Attack_Table(currentAttackVal);
jmpin 6:68c6a50e1437 635 }
jmpin 4:406f59c6a1a6 636 else
jmpin 6:68c6a50e1437 637 printf("Cannot lower value below 1.\r\n");
jmpin 2:f06ba516b1ad 638 }
jmpin 2:f06ba516b1ad 639 else if((keyPress == RAISE_DELAY_KEY) && (readyFlag)){ // button W pressed
jmpin 0:48311ffdfa96 640 // Raise Delay Value
jmpin 6:68c6a50e1437 641 if(currentDecayVal < 5){
jmpin 6:68c6a50e1437 642 currentDecayVal++;
jmpin 6:68c6a50e1437 643 change_Decay_Table(currentDecayVal);
jmpin 6:68c6a50e1437 644 }
jmpin 4:406f59c6a1a6 645 else
jmpin 4:406f59c6a1a6 646 printf("Cannot raise value above 5.\r\n");
jmpin 2:f06ba516b1ad 647 }
jmpin 2:f06ba516b1ad 648 else if((keyPress == LOWER_DELAY_KEY) && (readyFlag)){ // button S pressed
jmpin 0:48311ffdfa96 649 // Lower Delay Value
jmpin 6:68c6a50e1437 650 if(currentDecayVal > 1){
jmpin 6:68c6a50e1437 651 currentDecayVal--;
jmpin 6:68c6a50e1437 652 change_Decay_Table(currentDecayVal);
jmpin 6:68c6a50e1437 653 }
jmpin 4:406f59c6a1a6 654 else
jmpin 6:68c6a50e1437 655 printf("Cannot lower value below 1.\r\n");
jmpin 2:f06ba516b1ad 656 }
jmpin 2:f06ba516b1ad 657 else if((keyPress == RAISE_SUSTAIN_KEY) && (readyFlag)){ // button E pressed
jmpin 0:48311ffdfa96 658 // Raise Sustain Value
jmpin 6:68c6a50e1437 659 if(currentSustainVal < 5){
jmpin 2:f06ba516b1ad 660 currentSustainVal++;
jmpin 6:68c6a50e1437 661 change_Sustain_Table(currentSustainVal);
jmpin 6:68c6a50e1437 662 }
jmpin 4:406f59c6a1a6 663 else
jmpin 4:406f59c6a1a6 664 printf("Cannot raise value above 5.\r\n");
jmpin 2:f06ba516b1ad 665 }
jmpin 2:f06ba516b1ad 666 else if((keyPress == LOWER_SUSTAIN_KEY) && (readyFlag)){ // button D pressed
jmpin 0:48311ffdfa96 667 // Lower Sustain Value
jmpin 6:68c6a50e1437 668 if(currentSustainVal > 1){
jmpin 2:f06ba516b1ad 669 currentSustainVal--;
jmpin 6:68c6a50e1437 670 change_Sustain_Table(currentSustainVal);
jmpin 6:68c6a50e1437 671 }
jmpin 4:406f59c6a1a6 672 else
jmpin 6:68c6a50e1437 673 printf("Cannot lower value below 1.\r\n");
jmpin 2:f06ba516b1ad 674 }
jmpin 2:f06ba516b1ad 675 else if((keyPress == RAISE_RELEASE_KEY) && (readyFlag)){ // button R pressed
jmpin 0:48311ffdfa96 676 // Raise Release Value
jmpin 6:68c6a50e1437 677 if(currentReleaseVal < 5){
jmpin 2:f06ba516b1ad 678 currentReleaseVal++;
jmpin 6:68c6a50e1437 679 change_Release_Table(currentReleaseVal);
jmpin 6:68c6a50e1437 680 }
jmpin 4:406f59c6a1a6 681 else
jmpin 4:406f59c6a1a6 682 printf("Cannot raise value above 5.\r\n");
jmpin 2:f06ba516b1ad 683 }
jmpin 2:f06ba516b1ad 684 else if((keyPress == LOWER_RELEASE_KEY) && (readyFlag)){ // button F pressed
jmpin 0:48311ffdfa96 685 // Lower Release Value
jmpin 6:68c6a50e1437 686 if(currentReleaseVal > 1){
jmpin 2:f06ba516b1ad 687 currentReleaseVal--;
jmpin 6:68c6a50e1437 688 change_Release_Table(currentReleaseVal);
jmpin 6:68c6a50e1437 689 }
jmpin 4:406f59c6a1a6 690 else
jmpin 6:68c6a50e1437 691 printf("Cannot lower value below 1.\r\n");
jmpin 2:f06ba516b1ad 692 }
jmpin 2:f06ba516b1ad 693 else if((keyPress == CHANGE_WAVESHAPE_UP) && (readyFlag)){ // button T pressed
jmpin 2:f06ba516b1ad 694 // Change waveform shape to next waveform type
jmpin 2:f06ba516b1ad 695 switch(myWave){
jmpin 2:f06ba516b1ad 696 case sine:
jmpin 2:f06ba516b1ad 697 myWave = square;
jmpin 6:68c6a50e1437 698 change_Wave(myWave);
jmpin 2:f06ba516b1ad 699 break;
jmpin 2:f06ba516b1ad 700 case square:
jmpin 2:f06ba516b1ad 701 myWave = sawtooth;
jmpin 6:68c6a50e1437 702 change_Wave(myWave);
jmpin 2:f06ba516b1ad 703 break;
jmpin 2:f06ba516b1ad 704 case sawtooth:
jmpin 2:f06ba516b1ad 705 myWave = sine;
jmpin 6:68c6a50e1437 706 change_Wave(myWave);
jmpin 2:f06ba516b1ad 707 break;
jmpin 2:f06ba516b1ad 708 default:
jmpin 2:f06ba516b1ad 709 break;
jmpin 2:f06ba516b1ad 710 }
jmpin 2:f06ba516b1ad 711 }
jmpin 2:f06ba516b1ad 712 else if((keyPress == CHANGE_WAVESHAPE_DOWN) && (readyFlag)){ // button G pressed
jmpin 2:f06ba516b1ad 713 // Change waveform shape to previous waveform type
jmpin 2:f06ba516b1ad 714 switch(myWave){
jmpin 2:f06ba516b1ad 715 case sine:
jmpin 2:f06ba516b1ad 716 myWave = sawtooth;
jmpin 6:68c6a50e1437 717 change_Wave(myWave);
jmpin 2:f06ba516b1ad 718 break;
jmpin 2:f06ba516b1ad 719 case square:
jmpin 2:f06ba516b1ad 720 myWave = sine;
jmpin 6:68c6a50e1437 721 change_Wave(myWave);
jmpin 2:f06ba516b1ad 722 break;
jmpin 2:f06ba516b1ad 723 case sawtooth:
jmpin 2:f06ba516b1ad 724 myWave = square;
jmpin 6:68c6a50e1437 725 change_Wave(myWave);
jmpin 2:f06ba516b1ad 726 break;
jmpin 2:f06ba516b1ad 727 default:
jmpin 2:f06ba516b1ad 728 break;
jmpin 2:f06ba516b1ad 729 }
jmpin 2:f06ba516b1ad 730 }
jmpin 2:f06ba516b1ad 731
jmpin 0:48311ffdfa96 732 }
jmpin 0:48311ffdfa96 733 //do other tasks in main - interrupts will process button message characters
jmpin 0:48311ffdfa96 734 myled = 1;
jmpin 0:48311ffdfa96 735 wait(0.1);
jmpin 0:48311ffdfa96 736 myled = 0;
jmpin 0:48311ffdfa96 737 wait(0.1);
jmpin 0:48311ffdfa96 738
jmpin 0:48311ffdfa96 739 }