Yuu Kobayashi / Mbed 2 deprecated NuFM401

Nucleo F401REでFM音源を実装するやつ 外部DACとオペアンプを利用 現在はMCP4922とNJM2737

Dependencies:   AOTTrigon I2CEEPROM MCP4922 AQM0802A mbed

Fork of NuMidi401 by Yuu Kobayashi

NuFM401

Nucleo F401用の自作ソフトウェアMIDI音源

概要

だいたいそんなもんです。

特徴

  • ブレッドボードの上で組める程度には簡単な回路構成
  • 外部のDACにMCP4922を採用
  • 念のためのボルテージフォロアとしてNJM2737Dを採用
  • バンク用EEPROMに24FC1025を採用
  • シリアル経由でMIDIデータを受信することで操作

補足

シリアル <=> MIDI のドライバにはHairless-MIDISerialをオススメします。 仮想MIDIケーブルはとりあえずMIDI Yokeで。

FMOscillator/MIDIUtil.h@24:f93b49b4cd66, 2015-01-31 (annotated)

Committer:
kb10uy
Date:
Sat Jan 31 10:54:13 2015 +0000
Revision:
24:f93b49b4cd66
Parent:
13:e11380ceb460 
NRPN 20h xxh???

Who changed what in which revision?

UserRevisionLine numberNew contents of line
kb10uy 7:439c57c20593 1 #pragma once
kb10uy 7:439c57c20593 2
kb10uy 10:0ffdefe75566 3 extern float notenumfreqs[];
kb10uy 10:0ffdefe75566 4
kb10uy 10:0ffdefe75566 5 inline float getNoteNumberFrequency(int nn) {
kb10uy 10:0ffdefe75566 6 return notenumfreqs[nn];
kb10uy 11:62da91a1eaf1 7 }
kb10uy 11:62da91a1eaf1 8
kb10uy 11:62da91a1eaf1 9 enum MIDIMessageType{
kb10uy 11:62da91a1eaf1 10 NoteOn,
kb10uy 11:62da91a1eaf1 11 NoteOff,
kb10uy 11:62da91a1eaf1 12 PolyphonicKeyPressure,
kb10uy 11:62da91a1eaf1 13 ControlChange,
kb10uy 11:62da91a1eaf1 14 ProgramChange,
kb10uy 11:62da91a1eaf1 15 ChannelPressure,
kb10uy 11:62da91a1eaf1 16 PitchBend,
kb10uy 11:62da91a1eaf1 17 ChannelMode,
kb10uy 11:62da91a1eaf1 18 SystemCommon,
kb10uy 11:62da91a1eaf1 19 SystemRealtime,
kb10uy 11:62da91a1eaf1 20 };
kb10uy 11:62da91a1eaf1 21
kb10uy 11:62da91a1eaf1 22 typedef struct {
kb10uy 11:62da91a1eaf1 23 MIDIMessageType type;
kb10uy 11:62da91a1eaf1 24 char channel;
kb10uy 11:62da91a1eaf1 25 union {
kb10uy 11:62da91a1eaf1 26 char note;
kb10uy 11:62da91a1eaf1 27 char control;
kb10uy 11:62da91a1eaf1 28 char program;
kb10uy 11:62da91a1eaf1 29 char LSB;
kb10uy 11:62da91a1eaf1 30 };
kb10uy 11:62da91a1eaf1 31 union {
kb10uy 11:62da91a1eaf1 32 char velocity;
kb10uy 11:62da91a1eaf1 33 char pressure;
kb10uy 11:62da91a1eaf1 34 char data;
kb10uy 11:62da91a1eaf1 35 char MSB;
kb10uy 11:62da91a1eaf1 36 };
kb10uy 11:62da91a1eaf1 37 } MidiMessage;