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// Teensy2.0 MIDI CLOCK INTERFACE //
// by 2kohm //
// 18. Aprill 2014 //
// http://stromakustik.de //
// //
// Teensyduino MIDI Beat Clock //
// by Sebastian Tomczak //
// 29 August 2011 //
// http://www.goo.gl/Xh2skw //
// Bytes
byte counter;
byte CLOCK = 1;
byte START = 1;
byte CONTINUE = 5;
byte STOP = 20;
byte divider;
// Var
int pot1 = 0;
int clockdivider = clockdivider; // MIDI Clock Divider
// Setup
void setup()
{
Serial.begin(31250);
pinMode(10, OUTPUT);
pinMode(1, INPUT);
pinMode(11, OUTPUT);
digitalWrite(10, HIGH);
// MIDI RealTime System
usbMIDI.setHandleRealTimeSystem(RealTimeSystem);
}
void loop()
{
// Midi Clock Divider
divider = (analogRead(0)/250); // Read Pot 1 (scale 0 - 4)
if(divider == 0) { clockdivider = 24;} // 1/4
if(divider == 1) { clockdivider = 12;} // 1/8
if(divider == 2) { clockdivider = 6;} // 1/16
if(divider == 3) { clockdivider = 3;} // 1/32
if(divider == 4) { clockdivider = 2;} // 1/64
Serial.println(divider); // Display the Pot value ( 0 - 4)
usbMIDI.read();
}
void RealTimeSystem(byte realtimebyte)
{
if(realtimebyte == 248)
{
counter++;
if(counter == clockdivider)
{
counter = 0;
digitalWrite(10, HIGH);
}
if(counter == 1)
{
digitalWrite(10, LOW);
}
}
if(realtimebyte == START || realtimebyte == CONTINUE)
{
counter = 0;
digitalWrite(10, HIGH) ;
}
if(realtimebyte == STOP)
{
digitalWrite(10, LOW);
}
}