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/FMAlgorithm.cpp@21:e3014c1bdf9c, 2015-01-29 (annotated)

Committer:
kb10uy
Date:
Thu Jan 29 12:27:21 2015 +0000
Revision:
21:e3014c1bdf9c
Parent:
20:8278e607a687
Child:
23:deb76bdf6f03
noteOn/Off????????

Who changed what in which revision?

UserRevisionLine numberNew contents of line
kb10uy 19:f0dcf591c5dd 1 #include "FMAlgorithm.h"
kb10uy 19:f0dcf591c5dd 2
kb10uy 19:f0dcf591c5dd 3 FMAlgorithm::FMAlgorithm()
kb10uy 19:f0dcf591c5dd 4 {
kb10uy 19:f0dcf591c5dd 5 opcount = 0;
kb10uy 19:f0dcf591c5dd 6 cncount = 0;
kb10uy 19:f0dcf591c5dd 7 operators = NULL;
kb10uy 19:f0dcf591c5dd 8 connections = NULL;
kb10uy 19:f0dcf591c5dd 9 }
kb10uy 19:f0dcf591c5dd 10
kb10uy 19:f0dcf591c5dd 11 FMAlgorithm::FMAlgorithm(int opc, int cnc)
kb10uy 19:f0dcf591c5dd 12 {
kb10uy 19:f0dcf591c5dd 13 opcount = opc;
kb10uy 19:f0dcf591c5dd 14 cncount = cnc;
kb10uy 19:f0dcf591c5dd 15 operators = new FMOperator*[opcount];
kb10uy 21:e3014c1bdf9c 16 for(int i = 0; i < opcount; i++) operators[i] = NULL;
kb10uy 19:f0dcf591c5dd 17 connections = new FMAlgorithmConnection[cncount];
kb10uy 19:f0dcf591c5dd 18 }
kb10uy 19:f0dcf591c5dd 19
kb10uy 19:f0dcf591c5dd 20 FMAlgorithm::~FMAlgorithm()
kb10uy 19:f0dcf591c5dd 21 {
kb10uy 19:f0dcf591c5dd 22 if (operators != NULL) delete[] operators;
kb10uy 19:f0dcf591c5dd 23 if (connections != NULL) delete[] connections;
kb10uy 19:f0dcf591c5dd 24 }
kb10uy 19:f0dcf591c5dd 25
kb10uy 19:f0dcf591c5dd 26 void FMAlgorithm::setOperator(int num, FMOperator *op)
kb10uy 19:f0dcf591c5dd 27 {
kb10uy 19:f0dcf591c5dd 28 if (num >= opcount) return;
kb10uy 19:f0dcf591c5dd 29 operators[num] = op;
kb10uy 19:f0dcf591c5dd 30 }
kb10uy 19:f0dcf591c5dd 31
kb10uy 19:f0dcf591c5dd 32 void FMAlgorithm::setConnection(int num, int t, int s)
kb10uy 19:f0dcf591c5dd 33 {
kb10uy 19:f0dcf591c5dd 34 if (num >= cncount) return;
kb10uy 19:f0dcf591c5dd 35 connections[num].target = t;
kb10uy 19:f0dcf591c5dd 36 connections[num].source = s;
kb10uy 21:e3014c1bdf9c 37 connections[num].allocated = true;
kb10uy 20:8278e607a687 38 }
kb10uy 21:e3014c1bdf9c 39
kb10uy 21:e3014c1bdf9c 40 void FMAlgorithm::noteOn(float freq, double time) {
kb10uy 21:e3014c1bdf9c 41 for(int i = 0; i < opcount; i++) {
kb10uy 21:e3014c1bdf9c 42 if (operators[i] != NULL) operators[i]->attackNote(freq, time);
kb10uy 21:e3014c1bdf9c 43 }
kb10uy 21:e3014c1bdf9c 44 }
kb10uy 21:e3014c1bdf9c 45
kb10uy 21:e3014c1bdf9c 46 void FMAlgorithm::noteOff(double time) {
kb10uy 21:e3014c1bdf9c 47 for(int i = 0; i < opcount; i++) {
kb10uy 21:e3014c1bdf9c 48 if (operators[i] != NULL) operators[i]->releaseNote(time);
kb10uy 21:e3014c1bdf9c 49 }
kb10uy 21:e3014c1bdf9c 50 }
kb10uy 21:e3014c1bdf9c 51
kb10uy 21:e3014c1bdf9c 52 float FMAlgorithm::calculate() {
kb10uy 21:e3014c1bdf9c 53 return calculate(0);
kb10uy 21:e3014c1bdf9c 54 }
kb10uy 21:e3014c1bdf9c 55
kb10uy 21:e3014c1bdf9c 56 float FMAlgorithm::calculate(int opn) {
kb10uy 21:e3014c1bdf9c 57 float sum = 0;
kb10uy 21:e3014c1bdf9c 58 for(int i = 0; i < cncount; i++) {
kb10uy 21:e3014c1bdf9c 59 if (connections[i].allocated && connections[i].target == opn) {
kb10uy 21:e3014c1bdf9c 60 sum += calculate(connections[i].source);
kb10uy 21:e3014c1bdf9c 61 }
kb10uy 21:e3014c1bdf9c 62 }
kb10uy 21:e3014c1bdf9c 63 return operators[opn]->calculate(sum);
kb10uy 21:e3014c1bdf9c 64 }