475 lines
14 KiB
C++
475 lines
14 KiB
C++
#include <Wire.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 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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byte displayScreen = 0; //0 - main, 1 - sequencer, 2 - settings
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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[416] U8G2_FONT_SECTION("velvetscreen") =
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"\62\0\2\2\3\3\1\3\4\5\5\0\0\5\0\5\0\0\216\0\0\1\203 \4@:%\11m:*"
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"\251\134\251$(\6jn\252\14)\7j.\61%\5+\7\333ri%\0,\5Q*\2-\5K"
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"\63\3.\5I*\1/\6d\366\261\15\60\10lv*\232I\1\61\6k\62\262\65\62\11l\66\33"
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"%\225G\0\63\11l\66\33%\215F\2\64\7l\66Q\16]\65\11l\66Co\64\22\0\66\11l"
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"v*\257\230\24\0\67\10l\66#\307:\2\70\11lv*&\25\223\2\71\11lv*\246\235\24\0"
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":\5\331*)A\10lv*\216)\3B\11l\66+\216\24\207\0C\11lv*\352\230\24\0D"
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"\10l\66+\232#\1E\10l\66C\17=\2F\10l\66C\257\234\1G\10lv#\247\231\6H"
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"\10l\66Q\216)\3I\5i*CJ\7l\366\265L\12K\11l\66Q%\231\312\0L\7l\66"
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"\271=\2M\11m:y\255\244u\0N\11m:y\252$w\0O\10lv*\232I\1P\11l"
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"\66+\216\224\63\0Q\10lv*Z\61\5R\10l\66+\216\324\14S\11lv##\215F\2T"
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"\7k\62+\266\0U\10l\66\321\231\24\0V\11m:Y\247\62\345\10W\12m:Y%\225T\27"
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"\0X\11l\66Q&\25e\0Y\12m:\71\325\31e\24\1Z\7k\62\63\225\3r\10k\62Q"
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"\15\25\1t\6m:\377\21w\11mz\253R#\247\5x\6[\62\251\3\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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addr = addr + sizeof(channels);
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EEPROM.get(addr, seqA1);
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addr = addr + sizeof(seqA1);
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EEPROM.get(addr, seqA2);
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addr = addr + sizeof(seqA2);
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EEPROM.get(addr, seqA3);
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addr = addr + sizeof(seqA3);
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EEPROM.get(addr, seqA4);
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addr = addr + sizeof(seqA4);
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EEPROM.get(addr, seqA5);
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addr = addr + sizeof(seqA5);
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EEPROM.get(addr, seqA6);
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addr = addr + sizeof(seqA6);
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EEPROM.get(addr, seqA7);
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addr = addr + sizeof(seqA7);
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EEPROM.get(addr, seqA8);
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addr = addr + sizeof(seqA8);
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EEPROM.get(addr, seqB1);
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addr = addr + sizeof(seqB1);
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EEPROM.get(addr, seqB2);
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addr = addr + sizeof(seqB2);
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EEPROM.get(addr, seqB3);
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addr = addr + sizeof(seqB3);
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EEPROM.get(addr, seqB4);
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addr = addr + sizeof(seqB4);
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EEPROM.get(addr, seqB5);
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addr = addr + sizeof(seqB5);
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EEPROM.get(addr, seqB6);
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addr = addr + sizeof(seqB6);
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EEPROM.get(addr, seqB7);
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addr = addr + sizeof(seqB7);
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EEPROM.get(addr, seqB8);
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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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}
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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;
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digitalWrite(outsPins[i], LOW); //to avoid stuck leds
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}
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pulseCount = 0;
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tickCount = 0;
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}
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|
|
|
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);
|
|
addr = addr + sizeof(channels);
|
|
EEPROM.put(addr, seqA1);
|
|
addr = addr + sizeof(seqA1);
|
|
EEPROM.put(addr, seqA2);
|
|
addr = addr + sizeof(seqA2);
|
|
EEPROM.put(addr, seqA3);
|
|
addr = addr + sizeof(seqA3);
|
|
EEPROM.put(addr, seqA4);
|
|
addr = addr + sizeof(seqA4);
|
|
EEPROM.put(addr, seqA5);
|
|
addr = addr + sizeof(seqA5);
|
|
EEPROM.put(addr, seqA6);
|
|
addr = addr + sizeof(seqA6);
|
|
EEPROM.put(addr, seqA7);
|
|
addr = addr + sizeof(seqA7);
|
|
EEPROM.put(addr, seqA8);
|
|
addr = addr + sizeof(seqA8);
|
|
EEPROM.put(addr, seqB1);
|
|
addr = addr + sizeof(seqB1);
|
|
EEPROM.put(addr, seqB2);
|
|
addr = addr + sizeof(seqB2);
|
|
EEPROM.put(addr, seqB3);
|
|
addr = addr + sizeof(seqB3);
|
|
EEPROM.put(addr, seqB4);
|
|
addr = addr + sizeof(seqB4);
|
|
EEPROM.put(addr, seqB5);
|
|
addr = addr + sizeof(seqB5);
|
|
EEPROM.put(addr, seqB6);
|
|
addr = addr + sizeof(seqB6);
|
|
EEPROM.put(addr, seqB7);
|
|
addr = addr + sizeof(seqB7);
|
|
EEPROM.put(addr, seqB8);
|
|
} |