main.cpp

00001 /*
00002     CVtoOSC&MIDI Converter for Nucleo F303K8
00003     https://developer.mbed.org/platforms/ST-Nucleo-F303K8/
00004 */
00005 
00006 #pragma O3
00007 #pragma Otime
00008 
00009 #include <stdlib.h>
00010 #include <ctype.h>
00011 #include <math.h>
00012 #include <string>
00013 
00014 #include "mbed.h"
00015 #include "BufferedSerial.h"
00016 #include "DebouncedInterrupt.h"
00017 #include "MIDI.h"
00018 #include "OSCBundle.h"
00019 
00020 //-------------------------------------------------------------
00021 // Macros
00022 
00023 #define MIDI_OFFSET          4
00024 #define MAP_OFFSET           0
00025 #define CALIB_OFFSET        37
00026 
00027 #define QUAN_RES1          116      // Quantize voltage Steps
00028 #define QUAN_RES2           68
00029 #define QUAN_RES3           46
00030 #define QUAN_RES4           40
00031 #define QUAN_RES5           68
00032 #define QUAN_RES6           68  
00033 #define QUAN_RES7           16
00034 #define QUAN_RES8           58
00035 
00036 #define Lin                 0        // Linear LinearCV
00037 #define Chr                 1        // Chromatic
00038 #define Maj                 2        // Major
00039 #define M7                  3        // Major7
00040 #define Min7                4        // Minor7
00041 #define Dor                 5        // Dorian
00042 #define Min                 6        // Minor
00043 #define S5th                7        // 5th
00044 #define Wht                 8        // Wholetone
00045 
00046 #define SCALE_TOTAL         9
00047 
00048 #define SEND_BUFF_SIZE   1024        // OSC send buffer size
00049 #define WAIT_SEND          20        // wait time(ms) for esp8266 transmission complete
00050 
00051 #define MIDI_CHANNEL        1        // MIDI channel
00052 
00053 //-------------------------------------------------------------
00054 // Global Variables
00055 
00056 // Silentway Calibration Data Mapping
00057 // http://www.expert-sleepers.co.uk/silentway.html
00058 
00059 //  Chromatic Scale
00060 const float calibMap1[QUAN_RES1] = {
00061 0.00076928,   0.00900736,   0.01724544,   0.02548352,   0.03372160,
00062 0.04195968,   0.05019776,   0.05843584,   0.06667392,   0.07491200,
00063 0.08315008,   0.09138816,   0.09962624,   0.10786432,   0.11610240,
00064 0.12434047,   0.13258974,   0.14083999,   0.14909023,   0.15734047,
00065 0.16559070,   0.17384095,   0.18209119,   0.19034143,   0.19859168,
00066 0.20684192,   0.21509215,   0.22334240,   0.23159264,   0.23984288,
00067 0.24809311,   0.25634655,   0.26460093,   0.27285531,   0.28110969,
00068 0.28936407,   0.29761845,   0.30587283,   0.31412721,   0.32238159,
00069 0.33063596,   0.33889034,   0.34714472,   0.35539910,   0.36365348,
00070 0.37190786,   0.38017464,   0.38844886,   0.39672306,   0.40499726,
00071 0.41327149,   0.42154568,   0.42981988,   0.43809411,   0.44636831,
00072 0.45464250,   0.46291673,   0.47119093,   0.47946513,   0.48773935,
00073 0.49601355,   0.50430328,   0.51260746,   0.52091163,   0.52921581,
00074 0.53751999,   0.54582411,   0.55412829,   0.56243247,   0.57073665,
00075 0.57904083,   0.58734500,   0.59564912,   0.60395330,   0.61225748,
00076 0.62056166,   0.62890279,   0.63728637,   0.64566994,   0.65405351,
00077 0.66243708,   0.67082065,   0.67920423,   0.68758780,   0.69597137,
00078 0.70435494,   0.71273851,   0.72112209,   0.72950566,   0.73788923,
00079 0.74627280,   0.75476575,   0.76334614,   0.77192658,   0.78050703,
00080 0.78908741,   0.79766786,   0.80624831,   0.81482869,   0.82340914,
00081 0.83198959,   0.84056997,   0.84915042,   0.85773087,   0.86631125,
00082 0.87489170,   0.88425636,   0.89363104,   0.90300572,   0.91238040,
00083 0.92175508,   0.93112975,   0.94050443,   0.94987911,   0.95925385,
00084 0.96862853
00085 };
00086 
00087 //  Major Scale
00088 const float calibMap2[QUAN_RES2] = {
00089 calibMap1[0], calibMap1[2], calibMap1[4], calibMap1[5], calibMap1[7],
00090 calibMap1[9], calibMap1[11], calibMap1[12], calibMap1[14], calibMap1[16],
00091 calibMap1[17], calibMap1[19], calibMap1[21], calibMap1[23], calibMap1[24],
00092 calibMap1[26], calibMap1[28], calibMap1[29], calibMap1[31], calibMap1[33],
00093 calibMap1[35], calibMap1[36], calibMap1[38], calibMap1[40], calibMap1[41],
00094 calibMap1[43], calibMap1[45], calibMap1[47], calibMap1[48], calibMap1[50],
00095 calibMap1[52], calibMap1[53], calibMap1[55], calibMap1[57], calibMap1[59],
00096 calibMap1[60], calibMap1[62], calibMap1[64], calibMap1[65], calibMap1[67],
00097 calibMap1[69], calibMap1[71], calibMap1[72], calibMap1[74], calibMap1[76],
00098 calibMap1[77], calibMap1[79], calibMap1[81], calibMap1[83], calibMap1[84],
00099 calibMap1[86], calibMap1[88], calibMap1[89], calibMap1[91], calibMap1[93],
00100 calibMap1[95], calibMap1[96], calibMap1[98], calibMap1[100], calibMap1[101],
00101 calibMap1[103], calibMap1[105], calibMap1[107], calibMap1[108], calibMap1[110],
00102 calibMap1[112], calibMap1[113], calibMap1[115]
00103 };
00104 
00105 //  M7(9)
00106 const float calibMap3[QUAN_RES3] = {
00107 calibMap1[0],  calibMap1[4], calibMap1[7], calibMap1[11], calibMap1[12], 
00108 calibMap1[14], calibMap1[16], calibMap1[19], calibMap1[23], calibMap1[24],
00109 calibMap1[26], calibMap1[28], calibMap1[31], calibMap1[35], calibMap1[36], 
00110 calibMap1[38], calibMap1[40], calibMap1[43], calibMap1[47], calibMap1[48], 
00111 calibMap1[50], calibMap1[52], calibMap1[55], calibMap1[59], calibMap1[60], 
00112 calibMap1[62], calibMap1[64], calibMap1[67], calibMap1[71], calibMap1[72], 
00113 calibMap1[76], calibMap1[79], calibMap1[83], calibMap1[84], calibMap1[86], 
00114 calibMap1[88], calibMap1[91], calibMap1[95], calibMap1[96], calibMap1[100],
00115 calibMap1[103], calibMap1[107], calibMap1[108], calibMap1[110], calibMap1[112], 
00116 calibMap1[115]
00117 };
00118 
00119 //  m7(9)
00120 const float calibMap4[QUAN_RES4] = {
00121 calibMap1[0], calibMap1[3], calibMap1[7], calibMap1[10], calibMap1[12], 
00122 calibMap1[15], calibMap1[19], calibMap1[22], calibMap1[26], calibMap1[27], 
00123 calibMap1[31], calibMap1[34], calibMap1[36], calibMap1[38], calibMap1[39], 
00124 calibMap1[43], calibMap1[46], calibMap1[50], calibMap1[53], calibMap1[55], 
00125 calibMap1[58], calibMap1[60], calibMap1[63], calibMap1[67], calibMap1[70], 
00126 calibMap1[72], calibMap1[74], calibMap1[75], calibMap1[79], calibMap1[82], 
00127 calibMap1[86], calibMap1[89], calibMap1[91], calibMap1[94], calibMap1[96], 
00128 calibMap1[99],  calibMap1[103], calibMap1[106], calibMap1[110], calibMap1[113]
00129 };
00130 
00131 //  Dorian Scale
00132 const float calibMap5[QUAN_RES5] = {
00133 calibMap1[0], calibMap1[2], calibMap1[3], calibMap1[5], calibMap1[7],
00134 calibMap1[9], calibMap1[10], calibMap1[12], calibMap1[14], calibMap1[15],
00135 calibMap1[17], calibMap1[19], calibMap1[20], calibMap1[21], calibMap1[24],
00136 calibMap1[26], calibMap1[27], calibMap1[29], calibMap1[31], calibMap1[33],
00137 calibMap1[34], calibMap1[36], calibMap1[38], calibMap1[39], calibMap1[41],
00138 calibMap1[43], calibMap1[45], calibMap1[46], calibMap1[48], calibMap1[50],
00139 calibMap1[51], calibMap1[53], calibMap1[55], calibMap1[57], calibMap1[58],
00140 calibMap1[60], calibMap1[62], calibMap1[63], calibMap1[65], calibMap1[67],
00141 calibMap1[69], calibMap1[70], calibMap1[72], calibMap1[74], calibMap1[75],
00142 calibMap1[77], calibMap1[79], calibMap1[81], calibMap1[82], calibMap1[84],
00143 calibMap1[86], calibMap1[87], calibMap1[89], calibMap1[91], calibMap1[93],
00144 calibMap1[94], calibMap1[96], calibMap1[98], calibMap1[99], calibMap1[101],
00145 calibMap1[103], calibMap1[105], calibMap1[106], calibMap1[108], calibMap1[110],
00146 calibMap1[111], calibMap1[113], calibMap1[115]
00147 };
00148 
00149 //  Minor Scale
00150 const float calibMap6[QUAN_RES6] = {
00151 calibMap1[0], calibMap1[2], calibMap1[3], calibMap1[5], calibMap1[7],
00152 calibMap1[8], calibMap1[10], calibMap1[12], calibMap1[14], calibMap1[15],
00153 calibMap1[17], calibMap1[19], calibMap1[20], calibMap1[22], calibMap1[24],
00154 calibMap1[26], calibMap1[27], calibMap1[29], calibMap1[31], calibMap1[32],
00155 calibMap1[34], calibMap1[36], calibMap1[38], calibMap1[39], calibMap1[41],
00156 calibMap1[43], calibMap1[44], calibMap1[46], calibMap1[48], calibMap1[50],
00157 calibMap1[51], calibMap1[53], calibMap1[55], calibMap1[56], calibMap1[58],
00158 calibMap1[60], calibMap1[62], calibMap1[63], calibMap1[65], calibMap1[67],
00159 calibMap1[68], calibMap1[70], calibMap1[72], calibMap1[74], calibMap1[75],
00160 calibMap1[77], calibMap1[79], calibMap1[80], calibMap1[82], calibMap1[84],
00161 calibMap1[86], calibMap1[87], calibMap1[89], calibMap1[91], calibMap1[92],
00162 calibMap1[94], calibMap1[96], calibMap1[98], calibMap1[99], calibMap1[101],
00163 calibMap1[103], calibMap1[104], calibMap1[106], calibMap1[108], calibMap1[110],
00164 calibMap1[111], calibMap1[113], calibMap1[115]
00165 };
00166 
00167 //  5th
00168 const float calibMap7[QUAN_RES7] = {
00169 calibMap1[0], calibMap1[7], calibMap1[14], calibMap1[21], calibMap1[28],
00170 calibMap1[35], calibMap1[42], calibMap1[49], calibMap1[56], calibMap1[63],
00171 calibMap1[70], calibMap1[77], calibMap1[84], calibMap1[91], calibMap1[98],
00172 calibMap1[105]
00173 };
00174 
00175 //  Whole tone
00176 const float calibMap8[QUAN_RES8] = {
00177 calibMap1[0], calibMap1[1], calibMap1[2], calibMap1[6], calibMap1[8],
00178 calibMap1[10], calibMap1[12], calibMap1[14], calibMap1[16], calibMap1[18],
00179 calibMap1[20], calibMap1[22], calibMap1[24], calibMap1[26], calibMap1[28],
00180 calibMap1[30], calibMap1[32], calibMap1[34], calibMap1[36], calibMap1[38],
00181 calibMap1[40], calibMap1[42], calibMap1[44], calibMap1[46], calibMap1[48],
00182 calibMap1[50], calibMap1[52], calibMap1[54], calibMap1[56], calibMap1[58],
00183 calibMap1[60], calibMap1[62], calibMap1[64], calibMap1[66], calibMap1[68],
00184 calibMap1[70], calibMap1[72], calibMap1[74], calibMap1[76], calibMap1[78],
00185 calibMap1[80], calibMap1[82], calibMap1[84], calibMap1[86], calibMap1[88],
00186 calibMap1[90], calibMap1[92], calibMap1[94], calibMap1[96], calibMap1[98],
00187 calibMap1[100], calibMap1[102], calibMap1[104], calibMap1[106], calibMap1[108],
00188 calibMap1[110], calibMap1[112], calibMap1[114]
00189 };
00190 
00191 //  Major Scale
00192 const uint8_t calibMapMidi2[QUAN_RES2] = {
00193 0, 2, 4, 5, 7, 9, 11, 
00194 12, 14, 16, 17, 19, 21, 23, 
00195 24, 26, 28, 29, 31, 33, 35, 
00196 36, 38, 40, 41, 43, 45, 47, 
00197 48, 50, 52, 53, 55, 57, 59,
00198 60, 62, 64, 65, 67, 69, 71, 
00199 72, 74, 76, 77, 79, 81, 83, 
00200 84, 86, 88, 89, 91, 93, 95, 
00201 96, 98, 100, 101, 103, 105, 107, 
00202 108, 110, 112, 113, 115
00203 };
00204 
00205 //  M7(9)
00206 const uint8_t calibMapMidi3[QUAN_RES3] = {
00207 0,  4, 7, 11, 
00208 12, 14, 16, 19, 23, 
00209 24, 26, 28, 31, 35,
00210 36, 38, 40, 43, 47, 
00211 48, 50, 52, 55, 59, 
00212 60, 62, 64, 67, 71, 
00213 72, 76, 79, 83, 
00214 84, 86, 88, 91, 95, 
00215 96, 100, 103, 107, 
00216 108, 110, 112, 115
00217 };
00218 
00219 //  m7(9)
00220 const uint8_t calibMapMidi4[QUAN_RES4] = {
00221 0, 3, 7, 10, 
00222 12, 15, 19, 22, 
00223 26, 27, 31, 34, 
00224 36, 38, 39, 43, 46, 
00225 50, 53, 55, 58, 
00226 60, 63, 67, 70, 
00227 72, 74, 75, 79, 82, 
00228 86, 89, 91, 94, 
00229 96, 99, 103, 106, 110, 113
00230 };
00231 
00232 //  Dorian Scale
00233 const uint8_t calibMapMidi5[QUAN_RES5] = {
00234 0, 2, 3, 5, 7, 9, 10, 
00235 12, 14, 15, 17, 19, 20, 21, 
00236 24, 26, 27, 29, 31, 33, 34, 
00237 36, 38, 39, 41, 43, 45, 46, 
00238 48, 50, 51, 53, 55, 57, 58, 
00239 60, 62, 63, 65, 67, 69, 70, 
00240 72, 74, 75, 77, 79, 81, 82, 
00241 84, 86, 87, 89, 91, 93, 94, 
00242 96, 98, 99, 101, 103, 105, 106, 
00243 108, 110, 111, 113, 115
00244 };
00245 
00246 //  Minor Scale
00247 const uint8_t calibMapMidi6[QUAN_RES6] = {
00248 0, 2, 3, 5, 7, 8, 10, 
00249 12, 14, 15, 17, 19, 20, 22, 
00250 24, 26, 27, 29, 31, 32, 34, 
00251 36, 38, 39, 41, 43, 44, 46, 
00252 48, 50, 51, 53, 55, 56, 58,
00253 60, 62, 63, 65, 67, 68, 70, 
00254 72, 74, 75, 77, 79, 80, 82, 
00255 84, 86, 87, 89, 91, 92, 94, 
00256 96, 98, 99, 101, 103, 104, 106, 
00257 108, 110, 111, 113, 115
00258 };
00259 
00260 //  5th
00261 const uint8_t calibMapMidi7[QUAN_RES7] = {
00262 0, 7, 14, 21, 28, 35, 
00263 42, 49, 56, 63, 70, 77, 
00264 84, 91, 98, 105
00265 };
00266 
00267 //  Whole tone
00268 const uint8_t calibMapMidi8[QUAN_RES8] = {
00269 0, 1, 2, 6, 8, 10, 
00270 12, 14, 16, 18,20, 22, 
00271 24, 26, 28, 30, 32, 34,  
00272 36, 38, 40, 42, 44, 46, 
00273 48, 50, 52, 54, 56, 58, 
00274 60, 62, 64, 66, 68, 70, 
00275 72, 74, 76, 78, 80, 82, 
00276 84, 86, 88, 90, 92, 94, 
00277 96, 98, 100, 102, 104, 106, 
00278 108, 110, 112, 114
00279 };
00280 
00281 volatile bool changeFlag = false;
00282 
00283 //-------------------------------------------------------------
00284 // mbed Functions
00285 /*
00286 //Nucleo F303K8  //MCP3204
00287 CS  : pin 10 --  pin 8 (CS/SHDN)
00288 MOSI: pin 11 --  pin 9 (D in)
00289 MISO: pin 12 --  pin 10(D out)
00290 SCK : pin 13 --  pin 11(CLK)
00291 */
00292 SPI          spi(D11, D12, D13);
00293 DigitalOut   csPin(D10);
00294 
00295 AnalogIn     scalePin(A0); // Scale Pin 
00296 
00297 AnalogIn     potPin1(A1);     // Pot1~2
00298 AnalogIn     potPin2(D6);
00299 
00300 DebouncedInterrupt switch1(D8);   // SW1
00301 DebouncedInterrupt switch2(D9);   // SW2
00302 
00303 // esp8266 wi-fi settings
00304 #define SSID        "SSID"
00305 #define PASSWORD    "PASSWORD"
00306 
00307 #define REMOTE_ADDRESS   "192.168.1.2"
00308 #define REMOTE_PORT      "8000"
00309 
00310 #define STATIC_IP // if you use DHCP comment out this line 
00311 
00312 #define LOCAL_ADDRESS    "192.168.1.8"
00313 #define LOCAL_PORT       "9000"
00314 
00315 // Serial for esp8266 (tx, rx)
00316 BufferedSerial esp8266Serial(D1, D0);
00317 
00318 // Serial for debug (tx, rx)
00319 Serial pc(USBTX, USBRX);
00320 
00321 // MIDI (tx, rx)
00322 MIDI midi(A7, NC);
00323 
00324 // declare the OSC bundle
00325 OSCBundle bndl;
00326 
00327 // Timer
00328 Timer timer;
00329 
00330 //-------------------------------------------------------------
00331 // Functions
00332 
00333 int map(int, int, int, int, int);
00334 uint16_t adcRead(uint8_t);
00335 void interruptSW1();
00336 void interruptSW2();
00337 void getESP8266Response();
00338 void connectWifi();
00339 
00340 
00341 //-------------------------------------------------------------
00342 // Remaps value from one range to another range.
00343 
00344 inline int map(int x, int in_min, int in_max, int out_min, int out_max)
00345 {
00346   return (x - in_min) * (out_max - out_min) / (in_max - in_min) + out_min;
00347 }
00348 
00349 //-------------------------------------------------------------
00350 // Read MCP3208 AD Converter
00351 
00352 uint16_t adcRead(uint8_t ch) {
00353     uint8_t b1, b2;
00354     uint8_t address = 0B01100000 | ((ch & 0B11) << 2);
00355     
00356     csPin = 0; // CS pin Low
00357     
00358     spi.write(address);
00359     b1 = spi.write(0x00);
00360     b2 = spi.write(0x00);
00361 
00362     csPin = 1; // CS pin Hi
00363         
00364     return (b1 << 4) | (b2 >> 4);
00365 }
00366 
00367 //-------------------------------------------------------------
00368 // Check SW Status
00369 
00370 void interruptSW1() {
00371     volatile static uint8_t sw1State;
00372         
00373     if (!sw1State) {
00374                  
00375         sw1State = 1;
00376             
00377     } else {
00378         
00379         sw1State = 0;
00380     }
00381     
00382     bndl.add("/sw1").add(sw1State);
00383     changeFlag = true;
00384 }
00385 
00386 void interruptSW2() {
00387     volatile static uint8_t sw2State;
00388     
00389     if (!sw2State) {
00390                  
00391         sw2State = 1;
00392             
00393     } else {
00394 
00395         sw2State = 0;
00396     }
00397     
00398     bndl.add("/sw2").add(sw2State);
00399     changeFlag = true;
00400 }
00401 
00402 //-------------------------------------------------------------
00403 //  get & print esp8266 response
00404 
00405 void getESP8266Response(int timeout)
00406 {
00407     char resBuff[256] = {0};
00408     
00409     timer.start();
00410     
00411     uint8_t i = 0;
00412     
00413     while (!(timer.read() > timeout)) {
00414         
00415         if (esp8266Serial.readable()) {
00416             
00417             resBuff[i++] = esp8266Serial.getc();
00418         }
00419     }
00420     
00421     pc.printf(resBuff);
00422     
00423     timer.stop();
00424     timer.reset();
00425 }
00426 
00427 //-------------------------------------------------------------
00428 // Setup esp8266 wi-fi module
00429 
00430 void connectWifi() {
00431     
00432     pc.printf("\n---------- Starting ESP8266 Config ----------\r\n");
00433     wait(2);
00434     
00435     // set station mode
00436     pc.printf("\n---------- Set Station Mode ----------\r\n");
00437     
00438     esp8266Serial.printf("AT+CWMODE=1\r\n");
00439     
00440     getESP8266Response(1);
00441     wait(1);
00442     
00443     // restart
00444     pc.printf("\n---------- Reset ESP8266 ----------\r\n");
00445     
00446     esp8266Serial.printf("AT+RST\r\n");
00447     
00448     getESP8266Response(2);    
00449     wait(1);
00450     
00451 #ifdef STATIC_IP
00452     
00453     // set static IP
00454     pc.printf("\n---------- Setting Static IP ----------\r\n");
00455     
00456     esp8266Serial.printf("AT+CIPSTA=\"");
00457     esp8266Serial.printf(LOCAL_ADDRESS);
00458     esp8266Serial.printf("\"\r\n");
00459     
00460     getESP8266Response(3);
00461     wait(1);
00462     
00463 #endif    
00464     
00465     // connect wifi
00466     pc.printf("\n---------- Wi-fi Connect ----------\r\n");
00467     
00468     esp8266Serial.printf("AT+CWJAP=\"");
00469     esp8266Serial.printf(SSID);
00470     esp8266Serial.printf("\",\"");
00471     esp8266Serial.printf(PASSWORD);
00472     esp8266Serial.printf("\"\r\n");
00473     
00474     getESP8266Response(3);
00475     wait(2);
00476     
00477     // single connection
00478     pc.printf("\n---------- Setting Connection Mode ----------\r\n");
00479     
00480     esp8266Serial.printf("AT+CIPMUX=0\r\n");
00481     
00482     getESP8266Response(1);
00483     wait(1);
00484     
00485     // set UDP connection
00486     pc.printf("\n---------- Setting UDP Connection ----------\r\n");
00487     
00488     esp8266Serial.printf("AT+CIPSTART=");
00489     esp8266Serial.printf("\"UDP\",\"");
00490     esp8266Serial.printf(REMOTE_ADDRESS);
00491     esp8266Serial.printf("\",");
00492     esp8266Serial.printf(REMOTE_PORT);
00493     esp8266Serial.printf(",");
00494     esp8266Serial.printf(LOCAL_PORT);
00495     esp8266Serial.printf(",");
00496     esp8266Serial.printf("0\r\n");
00497     
00498     getESP8266Response(3);
00499     wait(1);
00500 
00501     // set data transmission mode
00502     pc.printf("\n---------- Setting Data Transmission Mode ----------\r\n");
00503     
00504     esp8266Serial.printf("AT+CIPMODE=1\r\n");
00505     
00506     getESP8266Response(1);
00507     wait(1);
00508     
00509     // change Baud Rate 
00510     pc.printf("\n---------- Change Baud Rate 4Mbps ----------\r\n");
00511     
00512     esp8266Serial.printf("AT+UART_CUR=4000000,8,1,0,0\r\n");
00513     getESP8266Response(3);
00514     
00515     esp8266Serial.baud(4000000);
00516     wait(1);
00517     
00518     // ready to send data
00519     pc.printf("\n---------- Ready to Send Data ----------\r\n");
00520     
00521     esp8266Serial.printf("AT+CIPSEND\r\n");
00522     
00523     getESP8266Response(2);
00524     wait(1);
00525 }
00526 
00527 //-------------------------------------------------------------
00528 // Main
00529 
00530 int main() {
00531     
00532     uint8_t i, idx;
00533     uint8_t oscBuff[SEND_BUFF_SIZE] = {0};
00534     static uint8_t scale;
00535     uint8_t note[4] = {0};
00536     static uint8_t _note[4];
00537     uint16_t adc[4] = {0};
00538     static uint16_t _adc[4];
00539     float pot[2] = {0};
00540     static float _pot[2] = {potPin1.read(), potPin2.read()};
00541     
00542     // Init SPI (4MHz clock)
00543     spi.format(8, 0);
00544     spi.frequency(4000000);
00545     csPin = 1;
00546     
00547     // setup esp8266 wi-fi
00548     esp8266Serial.baud(115200);
00549     connectWifi();
00550     
00551     // start MIDI (ch1)
00552     midi.begin(MIDI_CHANNEL);
00553     
00554     // start InterruptIn rising edge 
00555     switch1.attach(&interruptSW1, IRQ_RISE, 10);
00556     switch2.attach(&interruptSW2, IRQ_RISE, 10);
00557     
00558     // start timer (wait untile esp8266 transmission completed)
00559     timer.start();
00560     
00561     while (1) {
00562         
00563         scale = map(scalePin.read_u16(), 0, 51890, 0, (SCALE_TOTAL - 1));
00564 
00565         for (i = 0; i < 4; ++i) {
00566             // read ADC
00567             adc[i] = adcRead(i);
00568 
00569             if (abs(adc[i] - _adc[i]) > 10) {
00570                 
00571                 changeFlag = true;
00572                 
00573                 switch (i) {
00574                     case 0:
00575                         bndl.add("/acv1").add(adc[i]);
00576                         break;
00577                     case 1:
00578                         bndl.add("/acv2").add(adc[i]);
00579                         break;
00580                     case 2:
00581                         bndl.add("/acv3").add(adc[i]);
00582                         break;
00583                     case 3:
00584                         bndl.add("/acv4").add(adc[i]);
00585                         break;
00586                 }
00587             }
00588             
00589             if (abs(adc[i] - _adc[i]) > 31) {
00590                 
00591                 // MIDI quantize
00592                 switch (scale) {
00593                     
00594                     case Lin:
00595                     case Chr:
00596                         note[i] = map(adc[i], 825, 3757, 0, (84 - MAP_OFFSET)) + CALIB_OFFSET; // C0(12) ~ C7(96)
00597                         break;
00598                         
00599                     case Maj:
00600                         note[i] = calibMapMidi2[map(adc[i], 0, 4095, 0, QUAN_RES2 - 1)] + MIDI_OFFSET;
00601                         break;
00602                         
00603                     case M7:
00604                         note[i] = calibMapMidi3[map(adc[i], 0, 4095, 0, QUAN_RES3 - 1)] + MIDI_OFFSET;
00605                         break;
00606                         
00607                     case Min7:
00608                         note[i] = calibMapMidi4[map(adc[i], 0, 4095, 0, QUAN_RES4 - 1)] + MIDI_OFFSET;
00609                         break;
00610                         
00611                     case Dor:
00612                         note[i] = calibMapMidi5[map(adc[i], 0, 4095, 0, QUAN_RES5 - 1)] + MIDI_OFFSET;
00613                         break;
00614                         
00615                     case Min:
00616                         note[i] = calibMapMidi6[map(adc[i], 0, 4095, 0, QUAN_RES6 - 1)] + MIDI_OFFSET;
00617                         break;
00618                         
00619                     case S5th:
00620                         note[i] = calibMapMidi7[map(adc[i], 0, 4095, 0, QUAN_RES7 - 1)] + MIDI_OFFSET;
00621                         break;
00622                         
00623                     case Wht:
00624                         note[i] = calibMapMidi8[map(adc[i], 0, 4095, 0, QUAN_RES8 - 1)] + MIDI_OFFSET;
00625                         break;
00626                 
00627                 }
00628                     
00629             
00630                 if (_note[i] != note[i]) {
00631                     
00632                     midi.sendNoteOff(_note[i], 0, MIDI_CHANNEL);
00633                     midi.sendNoteOn(note[i], 100, MIDI_CHANNEL);
00634                     
00635                     _note[i] = note[i];
00636                 }
00637                 
00638             }
00639             
00640             _adc[i] = adc[i];
00641         }
00642 
00643         // check potentiometer value
00644         pot[0] = potPin1.read();
00645         pot[1] = potPin2.read();
00646 
00647         if (fabs(pot[0] - _pot[0]) > 0.02f) {
00648 
00649             bndl.add("/pot1").add(pot[0] * 1023.0f);
00650             midi.sendControlChange(0x16, map(potPin1.read_u16(), 0, 65535, 0, 127), MIDI_CHANNEL); // microKorg Noise Level
00651 
00652             _pot[0] = pot[0];
00653             changeFlag = true;
00654         
00655         } else if (fabs(pot[1] - _pot[1]) > 0.02f) {
00656 
00657             bndl.add("/pot2").add(pot[1] * 1023.0f);
00658             midi.sendControlChange(0x5E, map(potPin2.read_u16(), 0, 65535, 0, 127), MIDI_CHANNEL); // microKorg Delay Level
00659 
00660             _pot[1] = pot[1];
00661             changeFlag = true;
00662         }
00663         
00664         if (changeFlag && timer.read_ms() > WAIT_SEND) {
00665             
00666             idx = 0;
00667             int len = bndl.send(oscBuff);
00668             
00669             while (len--) {
00670                 // send OSC to esp8266 wifi
00671                 esp8266Serial.putc(oscBuff[idx++]);
00672             }
00673 
00674             changeFlag = false;
00675             bndl.empty(); // empty the bundle to free room for a new one
00676             
00677             timer.reset();
00678         }
00679 
00680     }
00681     
00682 }