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
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/FMOscillator.cpp@13:e11380ceb460, 2015-01-17 (annotated)
- Committer:
- kb10uy
- Date:
- Sat Jan 17 03:57:58 2015 +0000
- Revision:
- 13:e11380ceb460
- Parent:
- MIDI.cpp@11:62da91a1eaf1
- Child:
- 14:06785925915e
MIDI.cpp??Operator.cpp????FMOscillator???????????????
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
kb10uy | 13:e11380ceb460 | 1 | #include "FMOscillator.h" |
kb10uy | 11:62da91a1eaf1 | 2 | |
kb10uy | 11:62da91a1eaf1 | 3 | char sysexData[128]; |
kb10uy | 11:62da91a1eaf1 | 4 | |
kb10uy | 13:e11380ceb460 | 5 | FMOscillator::FMOscillator() { |
kb10uy | 13:e11380ceb460 | 6 | |
kb10uy | 13:e11380ceb460 | 7 | } |
kb10uy | 13:e11380ceb460 | 8 | |
kb10uy | 13:e11380ceb460 | 9 | FMOscillator::FMOscillator(Timer *timer, Serial *serial, AOTTrigon *trigon) { |
kb10uy | 13:e11380ceb460 | 10 | |
kb10uy | 13:e11380ceb460 | 11 | } |
kb10uy | 13:e11380ceb460 | 12 | |
kb10uy | 13:e11380ceb460 | 13 | void FMOscillator::getMIDIMessage() |
kb10uy | 11:62da91a1eaf1 | 14 | { |
kb10uy | 13:e11380ceb460 | 15 | unsigned char st = serial->getc(); |
kb10uy | 11:62da91a1eaf1 | 16 | switch(st >> 4) { |
kb10uy | 11:62da91a1eaf1 | 17 | case 0x8: |
kb10uy | 11:62da91a1eaf1 | 18 | midiNoteOff(st & 0xf, midis.getc(), midis.getc()); |
kb10uy | 11:62da91a1eaf1 | 19 | break; |
kb10uy | 11:62da91a1eaf1 | 20 | case 0x9: |
kb10uy | 11:62da91a1eaf1 | 21 | midiNoteOn(st & 0xf, midis.getc(), midis.getc()); |
kb10uy | 11:62da91a1eaf1 | 22 | break; |
kb10uy | 11:62da91a1eaf1 | 23 | case 0xa: |
kb10uy | 11:62da91a1eaf1 | 24 | midiPolyphonicKeyPressure(st & 0xf, midis.getc(), midis.getc()); |
kb10uy | 11:62da91a1eaf1 | 25 | break; |
kb10uy | 11:62da91a1eaf1 | 26 | case 0xb: |
kb10uy | 11:62da91a1eaf1 | 27 | char b2 = midis.getc(); |
kb10uy | 11:62da91a1eaf1 | 28 | if (b2 >= 120) { |
kb10uy | 11:62da91a1eaf1 | 29 | midiChannelMode(st & 0xf, b2, midis.getc()); |
kb10uy | 11:62da91a1eaf1 | 30 | } else { |
kb10uy | 11:62da91a1eaf1 | 31 | midiControlChange(st & 0xf, b2, midis.getc()); |
kb10uy | 11:62da91a1eaf1 | 32 | } |
kb10uy | 11:62da91a1eaf1 | 33 | break; |
kb10uy | 11:62da91a1eaf1 | 34 | case 0xc: |
kb10uy | 11:62da91a1eaf1 | 35 | midiProgramChange(st & 0xf, midis.getc()); |
kb10uy | 11:62da91a1eaf1 | 36 | break; |
kb10uy | 11:62da91a1eaf1 | 37 | case 0xd: |
kb10uy | 11:62da91a1eaf1 | 38 | midiChannelPressure(st & 0xf, midis.getc()); |
kb10uy | 11:62da91a1eaf1 | 39 | break; |
kb10uy | 11:62da91a1eaf1 | 40 | case 0xe: |
kb10uy | 11:62da91a1eaf1 | 41 | char LSB = midis.getc(); |
kb10uy | 11:62da91a1eaf1 | 42 | char MSB = midis.getc(); |
kb10uy | 11:62da91a1eaf1 | 43 | midiPitchBend(st & 0xf, ((LSB << 7) | (MSB << 7)) + 8192); |
kb10uy | 11:62da91a1eaf1 | 44 | break; |
kb10uy | 11:62da91a1eaf1 | 45 | case 0xf: |
kb10uy | 11:62da91a1eaf1 | 46 | int t2 = st & 0xf; |
kb10uy | 11:62da91a1eaf1 | 47 | if (t2 <= 7) { |
kb10uy | 11:62da91a1eaf1 | 48 | getMIDISystemCommonMessage(t2); |
kb10uy | 11:62da91a1eaf1 | 49 | } else { |
kb10uy | 11:62da91a1eaf1 | 50 | midiSystemRealtimeMessage(st); |
kb10uy | 11:62da91a1eaf1 | 51 | } |
kb10uy | 11:62da91a1eaf1 | 52 | break; |
kb10uy | 11:62da91a1eaf1 | 53 | } |
kb10uy | 11:62da91a1eaf1 | 54 | } |
kb10uy | 11:62da91a1eaf1 | 55 | |
kb10uy | 13:e11380ceb460 | 56 | void FMOscillator::getMIDISystemCommonMessage(char t2) |
kb10uy | 11:62da91a1eaf1 | 57 | { |
kb10uy | 11:62da91a1eaf1 | 58 | switch(t2) { |
kb10uy | 11:62da91a1eaf1 | 59 | case 0: |
kb10uy | 11:62da91a1eaf1 | 60 | //もう面倒臭いから128byteのバッファに適当に放り込んでおこう |
kb10uy | 11:62da91a1eaf1 | 61 | sysexData[0] = 0xf0; |
kb10uy | 11:62da91a1eaf1 | 62 | int i = 1; |
kb10uy | 11:62da91a1eaf1 | 63 | char d = 0; |
kb10uy | 11:62da91a1eaf1 | 64 | do { |
kb10uy | 13:e11380ceb460 | 65 | d = serial->getc(); |
kb10uy | 11:62da91a1eaf1 | 66 | sysexData[i]=d; |
kb10uy | 11:62da91a1eaf1 | 67 | i++; |
kb10uy | 11:62da91a1eaf1 | 68 | } while(d != 0xf7); |
kb10uy | 11:62da91a1eaf1 | 69 | |
kb10uy | 11:62da91a1eaf1 | 70 | break; |
kb10uy | 11:62da91a1eaf1 | 71 | case 1: |
kb10uy | 13:e11380ceb460 | 72 | serial->getc(); |
kb10uy | 11:62da91a1eaf1 | 73 | break; |
kb10uy | 11:62da91a1eaf1 | 74 | case 2: |
kb10uy | 11:62da91a1eaf1 | 75 | midis.getc(); |
kb10uy | 11:62da91a1eaf1 | 76 | midis.getc(); |
kb10uy | 11:62da91a1eaf1 | 77 | break; |
kb10uy | 11:62da91a1eaf1 | 78 | case 3: |
kb10uy | 11:62da91a1eaf1 | 79 | midis.getc(); |
kb10uy | 11:62da91a1eaf1 | 80 | break; |
kb10uy | 11:62da91a1eaf1 | 81 | case 4: |
kb10uy | 11:62da91a1eaf1 | 82 | break; |
kb10uy | 11:62da91a1eaf1 | 83 | case 5: |
kb10uy | 11:62da91a1eaf1 | 84 | break; |
kb10uy | 11:62da91a1eaf1 | 85 | case 6: |
kb10uy | 11:62da91a1eaf1 | 86 | break; |
kb10uy | 11:62da91a1eaf1 | 87 | case 7: |
kb10uy | 11:62da91a1eaf1 | 88 | //どうしろと |
kb10uy | 11:62da91a1eaf1 | 89 | break; |
kb10uy | 11:62da91a1eaf1 | 90 | } |
kb10uy | 11:62da91a1eaf1 | 91 | } |
kb10uy | 11:62da91a1eaf1 | 92 | |
kb10uy | 13:e11380ceb460 | 93 | void FMOscillator::midiSystemRealtimeMessage(char mes) |
kb10uy | 11:62da91a1eaf1 | 94 | { |
kb10uy | 11:62da91a1eaf1 | 95 | |
kb10uy | 11:62da91a1eaf1 | 96 | } |
kb10uy | 11:62da91a1eaf1 | 97 | |
kb10uy | 11:62da91a1eaf1 | 98 | |
kb10uy | 13:e11380ceb460 | 99 | void FMOscillator::midiNoteOn(char ch, char note, char vel) |
kb10uy | 11:62da91a1eaf1 | 100 | { |
kb10uy | 11:62da91a1eaf1 | 101 | if (vel==0) { |
kb10uy | 13:e11380ceb460 | 102 | //globalrelease((ch<<8)|note); |
kb10uy | 11:62da91a1eaf1 | 103 | } else { |
kb10uy | 13:e11380ceb460 | 104 | //globalattack((ch<<8)|note,vel); |
kb10uy | 11:62da91a1eaf1 | 105 | } |
kb10uy | 11:62da91a1eaf1 | 106 | } |
kb10uy | 11:62da91a1eaf1 | 107 | |
kb10uy | 13:e11380ceb460 | 108 | void FMOscillator::midiNoteOff(char ch, char note, char vel) |
kb10uy | 11:62da91a1eaf1 | 109 | { |
kb10uy | 13:e11380ceb460 | 110 | //globalrelease((ch<<8)|note); |
kb10uy | 11:62da91a1eaf1 | 111 | } |
kb10uy | 11:62da91a1eaf1 | 112 | |
kb10uy | 13:e11380ceb460 | 113 | void FMOscillator::midiPolyphonicKeyPressure(char ch, char note, char vel) |
kb10uy | 11:62da91a1eaf1 | 114 | { |
kb10uy | 11:62da91a1eaf1 | 115 | |
kb10uy | 11:62da91a1eaf1 | 116 | } |
kb10uy | 11:62da91a1eaf1 | 117 | |
kb10uy | 13:e11380ceb460 | 118 | void FMOscillator::midiControlChange(char ch, char ctrl, char data) |
kb10uy | 11:62da91a1eaf1 | 119 | { |
kb10uy | 11:62da91a1eaf1 | 120 | |
kb10uy | 11:62da91a1eaf1 | 121 | } |
kb10uy | 11:62da91a1eaf1 | 122 | |
kb10uy | 13:e11380ceb460 | 123 | void FMOscillator::midiChannelMode(char ch, char ctrl, char data) |
kb10uy | 11:62da91a1eaf1 | 124 | { |
kb10uy | 11:62da91a1eaf1 | 125 | |
kb10uy | 11:62da91a1eaf1 | 126 | } |
kb10uy | 11:62da91a1eaf1 | 127 | |
kb10uy | 13:e11380ceb460 | 128 | void FMOscillator::midiProgramChange(char ch, char prg) |
kb10uy | 11:62da91a1eaf1 | 129 | { |
kb10uy | 11:62da91a1eaf1 | 130 | |
kb10uy | 11:62da91a1eaf1 | 131 | } |
kb10uy | 11:62da91a1eaf1 | 132 | |
kb10uy | 13:e11380ceb460 | 133 | void FMOscillator::midiChannelPressure(char ch, char pres) |
kb10uy | 11:62da91a1eaf1 | 134 | { |
kb10uy | 11:62da91a1eaf1 | 135 | |
kb10uy | 11:62da91a1eaf1 | 136 | } |
kb10uy | 11:62da91a1eaf1 | 137 | |
kb10uy | 13:e11380ceb460 | 138 | void FMOscillator::midiPitchBend(char ch, short pb) |
kb10uy | 11:62da91a1eaf1 | 139 | { |
kb10uy | 11:62da91a1eaf1 | 140 | |
kb10uy | 11:62da91a1eaf1 | 141 | } |
kb10uy | 11:62da91a1eaf1 | 142 | |
kb10uy | 13:e11380ceb460 | 143 | void FMOscillator::midiSystemExclusiveMessage() |
kb10uy | 11:62da91a1eaf1 | 144 | { |
kb10uy | 11:62da91a1eaf1 | 145 | |
kb10uy | 11:62da91a1eaf1 | 146 | } |