Arduino示例代码讲解：MIDI note player 迷笛演奏

MIDI note player 迷笛演奏

这段代码是一个Arduino示例程序，用于通过串行端口发送MIDI音符数据。如果将此电路连接到MIDI合成器，它将依次播放从F#-0（0x1E）到F#-5（0x5A）的音符。它适用于需要通过Arduino控制MIDI设备的场景。

/*
 MIDI note player

 This sketch shows how to use the serial transmit pin (pin 1) to send MIDI note data.
 If this circuit is connected to a MIDI synth, it will play
 the notes F#-0 (0x1E) to F#-5 (0x5A) in sequence.


 The circuit:
 * digital in 1 connected to MIDI jack pin 5
 * MIDI jack pin 2 connected to ground
 * MIDI jack pin 4 connected to +5V through 220-ohm resistor
 Attach a MIDI cable to the jack, then to a MIDI synth, and play music.

 created 13 Jun 2006
 modified 13 Aug 2012
 by Tom Igoe

 This example code is in the public domain.

 http://www.arduino.cc/en/Tutorial/Midi

 */

void setup() {
   
  //  Set MIDI baud rate:
  Serial.begin(31250);
}

void loop() {
   
  // play notes from F#-0 (0x1E) to F#-5 (0x5A):
  for (int note = 0x1E; note < 0x5A; note ++) {
   
    //Note on channel 1 (0x90), some note value (note), middle velocity (0x45):
    noteOn