433 lines
14 KiB
C++
433 lines
14 KiB
C++
#include <Wire.h>
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//#include <Adafruit_GFX.h>
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//#include <Adafruit_SSD1306.h>
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#include <RotaryEncoder.h>
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#include <FlexiTimer2.h>
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#include <EEPROM.h>
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#include <U8g2lib.h>
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#define VERSION "0.9b"
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#define SCREEN_ADDRESS 0x3C
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#define PPQN 24
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#define PULSE_LENGTH 12 //ms (with 12 ms you can't get higher than 208bpm)
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#define MAXBPM 200 //250 at 24ppqn with 5ms pulse will be 50/50 square wave
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#define MINBPM 20
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#define SCREEN_TIMEOUT 600000 //Turn display off after 5 min
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/* Rev 1 Config
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#define ENC_BTN_PIN 14
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#define ENC_D1_PIN 17
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#define ENC_D2_PIN 4
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#define START_STOP_BTN_PIN 5
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#define EXT_INPUT_PIN 2 //needs to be an interrupt pin
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#define ANALOGUE_INPUT_1_PIN A2
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#define ANALOGUE_INPUT_2_PIN A1
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const int outsPins[6] = {6, 11, 7, 10, 8, 9};
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*/
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// Rev 2 and 3 Config
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#define ENC_BTN_PIN 14
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#define ENC_D1_PIN 17
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#define ENC_D2_PIN 4
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#define START_STOP_BTN_PIN 5
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#define SHIFT_BTN_PIN 12
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#define EXT_INPUT_PIN 2 //needs to be an interrupt pin
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#define ANALOGUE_INPUT_1_PIN A7
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#define ANALOGUE_INPUT_2_PIN A6
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const byte outsPins[6] = { 7, 8, 10, 6, 9, 11 };
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const int subDivs[17] = { -24, -12, -8, -6, -4, -3, -2, 1, 2, 3, 4, 5, 6, 7, 8, 16, 32 }; //positive - divide, negative - multiply, 0 - off
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byte bpm = 130;
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byte bpmModulationChannel = 200; //0 - CV1, 1 - CV2, 255 - OFF
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byte bpmModulationRange = 0;
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struct channel {
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byte mode; //0 - CLK, 1 - RND, 2 - SEQ
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byte subDiv;
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byte CV1Target; //0 - Off, 1 - Subdiv, 2 - RND, 3 - SeqPattern
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byte CV1Value;
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byte CV2Target;
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byte CV2Value;
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byte offset;
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byte random;
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byte seqPattern;
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};
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channel channels[6] = { //array of channel settings
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{ 0, 7, 0, 3, 0, 3, 0, 0, 0 },
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{ 0, 7, 0, 3, 0, 3, 0, 0, 0 },
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{ 0, 7, 0, 3, 0, 3, 0, 0, 0 },
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{ 0, 7, 0, 3, 0, 3, 0, 0, 0 },
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{ 0, 7, 0, 3, 0, 3, 0, 0, 0 },
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{ 0, 7, 0, 3, 0, 3, 0, 0, 0 }
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};
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bool seqA1[16] = {1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0};
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bool seqA2[16] = {0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0};
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bool seqA3[16] = {1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1};
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bool seqA4[16] = {1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0};
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bool seqA5[16] = {1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0};
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bool seqA6[16] = {0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0};
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bool seqA7[16] = {1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1};
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bool seqA8[16] = {1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0};
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bool seqB1[16] = {1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0};
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bool seqB2[16] = {0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0};
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bool seqB3[16] = {1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1};
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bool seqB4[16] = {1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0};
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bool seqB5[16] = {1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0};
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bool seqB6[16] = {0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0};
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bool seqB7[16] = {1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1};
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bool seqB8[16] = {1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0};
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bool *currentSeq;
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byte currentStep = 0;
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byte memCode = 'A'; //Change to different letter if you changed the data structure
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unsigned int channelPulseCount[6];
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unsigned int channelPulsesPerCycle[6];
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byte sixteenthPulseCount = 0;
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int playingModes[6]; //actual channel modes array updated from channels object on each beat
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unsigned int pulsePeriod;
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bool isPlaying = false;
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unsigned int tickCount = 0;
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unsigned int pulseCount = 0;
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byte masterClockMode = 0; // 0 - internal, 1 - external 24ppqn, 2 - external beat
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unsigned long lastExtPulseTime;
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unsigned long newExtPulseTime;
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bool needPulseReset[6] = { true, true, true, true, true, true };
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byte displayTab = 0;
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bool insideTab = false;
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byte menuItem = 0;
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byte lastMenuItem = 3;
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bool playBtnPushed = false;
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bool shiftBtnPushed = false;
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int a1Input = 0;
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int a2Input = 0;
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int encPositionOld = 0;
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unsigned long encPressedTime;
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unsigned long encReleasedTime;
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bool encPressRegistered;
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//unsigned long lastInteractionTime; // used for display timeout
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U8G2_SSD1306_128X64_NONAME_2_HW_I2C u8g2(U8G2_R2, SCL, SDA, U8X8_PIN_NONE);
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RotaryEncoder encoder(ENC_D1_PIN, ENC_D2_PIN, RotaryEncoder::LatchMode::TWO03);
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const uint8_t velvetscreen[597] U8G2_FONT_SECTION("velvetscreen") =
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"I\0\2\2\3\3\3\3\4\5\5\0\0\5\0\5\0\0\363\0\0\2\70!\6)\251\254\0\42\6\23"
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"\317$\25#\12-\351UC\345\241*\0$\11,\331\215\24e\32\11%\12-\351\250\244r\245\222\0"
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"&\11-\351\351*\311\250\2'\5\21\257\10(\6*\271\251\62)\10*\271\304\224\24\0*\11-\351"
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"V\325jF\0+\7\33\313\245\225\0,\5\21\251\10-\5\13\315\14.\5\11\251\4/\7$\331\307"
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"\66\0\60\10,\331\251h&\5\61\7+\311\310\326\0\62\11,\331l\224T\36\1\63\11,\331l\224"
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"\64\32\11\64\10,\331D\71t\1\65\11,\331\14\275\321H\0\66\11,\331\251\274bR\0\67\10,"
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"\331\214\34\353\10\70\11,\331\251\230TL\12\71\11,\331\251\230vR\0:\6\31\253\244\0;\6!"
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"\251$\1<\7+\311\246\272\0=\6\33\313\354\1>\7+\311\344\252\4\77\11,\331l\224\64\216\0"
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"@\12-\351\255J\215\14\27\0A\10,\331\251\70\246\14B\11,\331\254\70R\34\2C\11,\331\251"
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"\250cR\0D\10,\331\254h\216\4E\10,\331\14=\364\10F\10,\331\14\275r\6G\10,\331"
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"\215\234f\32H\10,\331D\71\246\14I\6)\251\14\1J\10,\331\327\62)\0K\11,\331D\225"
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"d*\3L\7,\331\344\366\10M\11-\351\344\265\222\326\1N\11-\351\344\251\222\334\1O\10,\331"
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"\251h&\5P\11,\331\254\70R\316\0Q\10,\331\251h\305\24R\10,\331\254\70R\63S\11,"
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"\331\215\214\64\32\11T\7+\311\254\330\2U\10,\331DgR\0V\12-\351d\235\312\224#\0W"
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"\12-\351d\225TR]\0X\11,\331D\231T\224\1Y\12-\351\344Tg\224Q\4Z\7+\311"
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"\314T\16[\6*\271\254J\134\11$\331d\224QF\1]\6*\271\250j^\5\23\317\65_\6\14"
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"\331\214\0o\7[\333\214\64\2p\11-\351-\265\227Z\0q\7-\351\35_\13r\10+\311D\65"
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"T\4s\7-\351\334\366\30t\7-\351\374G\0u\10-\351\334*\351\61v\5\211\335\4w\12-"
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"\351\255J\215\234\26\0x\6\33\311\244\16\0\0\0\4\377\377\0";
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void setup() {
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//Serial.begin(9600);
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//check last bit in eeprom to know if the correct settings were stored
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if (EEPROM.read(1023) == memCode) {
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int addr = 0;
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EEPROM.get(addr, bpm);
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addr = addr + sizeof(bpm);
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EEPROM.get(addr, bpmModulationChannel);
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addr = addr + sizeof(bpmModulationChannel);
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EEPROM.get(addr, bpmModulationRange);
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addr = addr + sizeof(bpmModulationRange);
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EEPROM.get(addr, masterClockMode);
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addr = addr + sizeof(masterClockMode);
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EEPROM.get(addr, channels);
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} else {
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saveState();
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EEPROM.write(1023, memCode);
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}
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pinMode(ENC_BTN_PIN, INPUT_PULLUP);
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pinMode(START_STOP_BTN_PIN, INPUT_PULLUP);
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pinMode(SHIFT_BTN_PIN, INPUT_PULLUP);
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pinMode(EXT_INPUT_PIN, INPUT_PULLUP);
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attachInterrupt(digitalPinToInterrupt(EXT_INPUT_PIN), externalClock, FALLING);
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for (byte i = 0; i < 6; i++) {
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pinMode(outsPins[i], OUTPUT);
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}
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u8g2.begin();
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updateScreen();
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calculateCycles();
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calculateBPMTiming();
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FlexiTimer2::set(1, 1.0 / 1000, clock); // 1.0/1000 = 1ms period. If other than 1ms calculateBPMTiming() might need tweaking
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FlexiTimer2::start();
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}
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void loop() {
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checkInputs();
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/*if ((millis() - lastInteractionTime) > SCREEN_TIMEOUT) {
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display.clearDisplay();
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display.display();
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if (masterClockMode == 2 || masterClockMode == 3) {
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calculateBPMTiming();
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}}*/
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}
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void clock() {
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if (isPlaying) {
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// Action on each pulse
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if (tickCount == 0) {
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sendTriggers();
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}
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//this part gets the Pulse and Ticks ticking
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//it's placed after the triggers to avoid problems on the start (when pulseCount==0)
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tickCount++;
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if (masterClockMode == 0) {
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if (tickCount >= pulsePeriod) {
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tickCount = 0;
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if (pulseCount < (PPQN - 1)) { //-1 is here to avoid extra IF to reset to 0
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pulseCount++;
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} else {
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pulseCount = 0;
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}
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if (bpmModulationRange != 0) {
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calculateBPMTiming();
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}
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}
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}
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// pull low all outputs after set pulse length
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if (tickCount >= PULSE_LENGTH) {
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for (byte i = 0; i < 6; i++) {
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digitalWrite(outsPins[i], LOW);
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}
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}
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}
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}
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void externalClock() {
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lastExtPulseTime = newExtPulseTime;
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newExtPulseTime = millis();
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if (masterClockMode == 1) { // EXT-24
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//reset cycles if there was no pulses for a while
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if ((newExtPulseTime - lastExtPulseTime) > 125) { //125ms is 20bpm
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for (byte i = 0; i < 6; i++) {
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channelPulseCount[i] = 0;
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}
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}
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if (!isPlaying) {
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isPlaying = true;
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}
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tickCount = 0; //to make things happen in the main clock function
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if (pulseCount < (PPQN - 1)) {
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pulseCount++;
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} else {
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pulseCount = 0;
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}
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}
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}
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void sendTriggers() {
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for (byte i = 0; i < 6; i++) {
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if (playingModes[i] != subDivs[channels[i].subDiv]) {
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needPulseReset[i] = true;
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}
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}
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//16th notes for sequencer
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if (sixteenthPulseCount == 0) {
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for (byte i = 0; i < 6; i++) {
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if (channels[i].seqPattern == 0) {
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currentSeq = seqA1;
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} else if (channels[i].seqPattern == 1) {
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currentSeq = seqA2;
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} else if (channels[i].seqPattern == 2) {
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currentSeq = seqA3;
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} else if (channels[i].seqPattern == 3) {
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currentSeq = seqA4;
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} else if (channels[i].seqPattern == 4) {
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currentSeq = seqA5;
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} else if (channels[i].seqPattern == 5) {
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currentSeq = seqA6;
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} else if (channels[i].seqPattern == 6) {
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currentSeq = seqA7;
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} else if (channels[i].seqPattern == 7) {
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currentSeq = seqA8;
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} else if (channels[i].seqPattern == 8) {
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currentSeq = seqB1;
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} else if (channels[i].seqPattern == 9) {
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currentSeq = seqB2;
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} else if (channels[i].seqPattern == 10) {
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currentSeq = seqB3;
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} else if (channels[i].seqPattern == 11) {
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currentSeq = seqB4;
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} else if (channels[i].seqPattern == 12) {
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currentSeq = seqB5;
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} else if (channels[i].seqPattern == 13) {
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currentSeq = seqB6;
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} else if (channels[i].seqPattern == 14) {
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currentSeq = seqB7;
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} else if (channels[i].seqPattern == 15) {
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currentSeq = seqB8;
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}
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if (channels[i].mode == 2 && channelPulseCount[i] == 0 && currentSeq[currentStep]) {
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digitalWrite(outsPins[i], HIGH);
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}
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}
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}
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if (sixteenthPulseCount < (PPQN / 4) - 1) {
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sixteenthPulseCount++;
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} else {
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sixteenthPulseCount = 0;
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if (currentStep < 15) {
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currentStep ++;
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} else {
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currentStep = 0;
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}
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}
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//switching modes on the beat and resetting channel clock
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if (pulseCount == 0) {
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calculateCycles();
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for (byte i = 0; i < 6; i++) {
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if (needPulseReset[i] == true) {
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channelPulseCount[i] = 0;
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needPulseReset[i] = false;
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}
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}
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}
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//multiplier
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for (byte i = 0; i < 6; i++) {
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//RND modulation
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byte randMod = 0;
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if (channels[i].CV1Target == 2) {
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randMod = randMod + a1Input;
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}
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if (channels[i].CV2Target == 2) {
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randMod = randMod + a2Input;
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}
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if (channels[i].CV1Target == 2 || channels[i].CV2Target == 2) {
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randMod = map(randMod, 0, 1023, -5, +5);
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}
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byte randAmount = channels[i].random + randMod;
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if (randAmount > 100) {
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randAmount = 0;
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} else if (randAmount > 10) {
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randAmount = 10;
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}
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if ((channels[i].mode == 0 && channelPulseCount[i] == channels[i].offset) //CLK with offset
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|| (channels[i].mode == 1 && channelPulseCount[i] == 0 && (random(10) + 1) > randAmount) //RND
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) {
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digitalWrite(outsPins[i], HIGH);
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}
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if (channelPulseCount[i] < channelPulsesPerCycle[i]) {
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channelPulseCount[i]++;
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} else {
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channelPulseCount[i] = 0;
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}
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}
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}
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void calculateCycles() {
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for (byte i = 0; i < 6; i++) {
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if (channels[i].CV1Target != 1 && channels[i].CV2Target != 1) {
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playingModes[i] = subDivs[channels[i].subDiv];
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} else if (channels[i].CV1Target == 1) { //subdiv modulation happens here
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int mod;
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mod = a1Input;
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mod = map(mod, 0, 1023, (channels[i].CV1Value * -1), channels[i].CV1Value);
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playingModes[i] = subDivs[channels[i].subDiv - mod]; //subtracting because the innitial array is backwards
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} else if (channels[i].CV2Target == 1) {
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int mod;
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mod = a2Input;
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mod = map(mod, 0, 1023, (channels[i].CV2Value * -1), channels[i].CV2Value);
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playingModes[i] = subDivs[channels[i].subDiv - mod];
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}
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if (playingModes[i] > 0 && channels[i].mode != 2) {
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channelPulsesPerCycle[i] = (playingModes[i] * PPQN) - 1;
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} else if (playingModes[i] <= 0 && channels[i].mode != 2) {
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channelPulsesPerCycle[i] = (PPQN / abs(playingModes[i])) - 1;
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} else if (channels[i].mode == 2) { //Sequencer plays 1/16th
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channelPulsesPerCycle[i] = (PPQN / 4) - 1;
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}
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if (channels[i].offset > channelPulsesPerCycle[i]) {
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channels[i].offset = channelPulsesPerCycle[i];
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}
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}
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}
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void calculateBPMTiming() {
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int mod = 0;
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if (masterClockMode == 0) { //Internal clock
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if (bpmModulationRange != 0 && bpmModulationChannel == 0) {
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mod = map(a1Input, 0, 1023, bpmModulationRange * -10, bpmModulationRange * 10);
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} else if (bpmModulationRange != 0 && bpmModulationChannel == 1) {
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mod = map(a2Input, 0, 1023, bpmModulationRange * -10, bpmModulationRange * 10);
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}
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pulsePeriod = 60000 / ((bpm + mod) * PPQN);
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} else if (masterClockMode == 2) { //for external beat clock
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pulsePeriod = (newExtPulseTime - lastExtPulseTime) / PPQN;
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} else if (masterClockMode == 3) { //for ext 1/16 clock (hardcoded)
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pulsePeriod = (newExtPulseTime - lastExtPulseTime) / 6;
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}
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}
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void resetClocks() {
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for (byte i = 0; i < 6; i++) {
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channelPulseCount[i] = 0;
|
|
digitalWrite(outsPins[i], LOW); //to avoid stuck leds
|
|
}
|
|
pulseCount = 0;
|
|
tickCount = 0;
|
|
}
|
|
|
|
void saveState() {
|
|
int addr = 0;
|
|
EEPROM.put(addr, bpm);
|
|
addr = addr + sizeof(bpm);
|
|
EEPROM.put(addr, bpmModulationChannel);
|
|
addr = addr + sizeof(bpmModulationChannel);
|
|
EEPROM.put(addr, bpmModulationRange);
|
|
addr = addr + sizeof(bpmModulationRange);
|
|
EEPROM.put(addr, masterClockMode);
|
|
addr = addr + sizeof(masterClockMode);
|
|
EEPROM.put(addr, channels);
|
|
} |