mirror of https://github.com/midilab/uClock
parent
22bd4880ac
commit
609242b8d7
@ -0,0 +1,140 @@ |
||||
#include "Arduino.h" |
||||
#include <uClock.h> |
||||
|
||||
// Sequencer config
|
||||
#define STEP_MAX_SIZE 16 |
||||
#define SEQUENCER_MIN_BPM 50 |
||||
#define SEQUENCER_MAX_BPM 178 |
||||
#define NOTE_VELOCITY 90 |
||||
#define ACCENT_VELOCITY 110 |
||||
|
||||
// Choose only 1 mode and comment the other.
|
||||
// OLD_SCHOOL_ACID_ACCENTED
|
||||
// a button/led extra hardware to control steps velocity using accent only
|
||||
// NEW_SCHOOL_VELOCITY_CONTROLLED
|
||||
// a 10k potentiomer extra hardware to freely control steps velocity
|
||||
#define OLD_SCHOOL_ACID_ACCENTED |
||||
#define NEW_SCHOOL_FREE_VELOCITY |
||||
|
||||
typedef struct |
||||
{ |
||||
uint8_t note; |
||||
uint8_t velocity; |
||||
bool accent; |
||||
bool glide; |
||||
bool rest; |
||||
} SEQUENCER_STEP_DATA; |
||||
|
||||
SEQUENCER_STEP_DATA _sequencer[STEP_MAX_SIZE]; |
||||
uint16_t _last_step = 0; |
||||
|
||||
// MIDI clock, start, stop, note on and note off byte definitions - based on MIDI 1.0 Standards.
|
||||
#define MIDI_CLOCK 0xF8 |
||||
#define MIDI_START 0xFA |
||||
#define MIDI_STOP 0xFC |
||||
#define NOTE_ON 0x90 |
||||
#define NOTE_OFF 0x80 |
||||
|
||||
void sendMidiMessage(uint8_t command, uint8_t byte1, uint8_t byte2) |
||||
{
|
||||
// send midi message
|
||||
Serial.write(command); |
||||
Serial.write(byte1); |
||||
Serial.write(byte2); |
||||
} |
||||
|
||||
// The callback function wich will be called by uClock each Pulse of 16PPQN clock resolution.
|
||||
// At this resolution each call represents exactly one step.
|
||||
void ClockOut16PPQN(uint32_t * tick)
|
||||
{ |
||||
uint16_t step; |
||||
|
||||
// get actual step.
|
||||
step = *tick % STEP_MAX_SIZE; |
||||
|
||||
// send note off for the last step note on if we had send it on last ClockOut16PPQN() call and if this step are not in glide mode also.
|
||||
if ( _sequencer[_last_step].rest == false && _sequencer[_last_step].glide == false ) { |
||||
sendMidiMessage(NOTE_OFF, _sequencer[_last_step].note, 0); |
||||
} |
||||
|
||||
// send note on only if this step are not in rest mode
|
||||
if ( _sequencer[step].rest == false ) { |
||||
sendMidiMessage(NOTE_ON, _sequencer[step].note, _sequencer[step].velocity); |
||||
} |
||||
|
||||
// time to let glide go away? be shure to send glided note off before the _last_step send his note off
|
||||
// same note? do not send note off
|
||||
if ( _sequencer[_last_step].glide == true && _sequencer[step].note != _sequencer[_last_step].note ) { |
||||
sendMidiMessage(NOTE_OFF, _sequencer[_last_step].note, 0); |
||||
} |
||||
|
||||
_last_step = step; |
||||
} |
||||
|
||||
// The callback function wich will be called by uClock each Pulse of 96PPQN clock resolution.
|
||||
void ClockOut96PPQN(uint32_t * tick)
|
||||
{ |
||||
// Send MIDI_CLOCK to external gears
|
||||
Serial.write(MIDI_CLOCK); |
||||
} |
||||
|
||||
// The callback function wich will be called when clock starts by using Clock.start() method.
|
||||
void onClockStart()
|
||||
{ |
||||
Serial.write(MIDI_START); |
||||
} |
||||
|
||||
// The callback function wich will be called when clock stops by using Clock.stop() method.
|
||||
void onClockStop()
|
||||
{ |
||||
Serial.write(MIDI_STOP); |
||||
} |
||||
|
||||
void setup()
|
||||
{ |
||||
// Initialize serial communication at 31250 bits per second, the default MIDI serial speed communication:
|
||||
Serial.begin(31250); |
||||
|
||||
// Inits the clock
|
||||
uClock.init(); |
||||
|
||||
// Set the callback function for the clock output to send MIDI Sync message.
|
||||
uClock.setClock96PPQNOutput(ClockOut96PPQN); |
||||
|
||||
// Set the callback function for the step sequencer on 16ppqn
|
||||
uClock.setClock16PPQNOutput(ClockOut16PPQN);
|
||||
|
||||
// Set the callback function for MIDI Start and Stop messages.
|
||||
uClock.setOnClockStartOutput(onClockStart);
|
||||
uClock.setOnClockStopOutput(onClockStop); |
||||
|
||||
// Set the clock BPM to 126 BPM
|
||||
uClock.setTempo(126); |
||||
|
||||
// initing sequencer data
|
||||
for ( uint16_t i = 0; i < STEP_MAX_SIZE; i++ ) { |
||||
_sequencer[i].note = 36; |
||||
_sequencer[i].velocity = NOTE_VELOCITY; |
||||
_sequencer[i].accent = false; |
||||
_sequencer[i].glide = false; |
||||
_sequencer[i].rest = false; |
||||
} |
||||
|
||||
// Starts the clock, tick-tac-tick-tac...
|
||||
uClock.start(); |
||||
} |
||||
|
||||
// User interaction goes here
|
||||
void loop()
|
||||
{ |
||||
// octave pot
|
||||
// note pot
|
||||
// tempo pot
|
||||
// pattern step init pot
|
||||
// pattern step size pot
|
||||
// previous step button
|
||||
// next step button
|
||||
// rest button/led
|
||||
// glide button/led
|
||||
// accent button/led
|
||||
} |
Loading…
Reference in new issue