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@24:f93b49b4cd66, 2015-01-31 (annotated)

Committer:
kb10uy
Date:
Sat Jan 31 10:54:13 2015 +0000
Revision:
24:f93b49b4cd66
Parent:
23:deb76bdf6f03 
NRPN 20h xxh???

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 23:deb76bdf6f03 7 cni = 0;
kb10uy 19:f0dcf591c5dd 8 operators = NULL;
kb10uy 19:f0dcf591c5dd 9 connections = NULL;
kb10uy 19:f0dcf591c5dd 10 }
kb10uy 19:f0dcf591c5dd 11
kb10uy 23:deb76bdf6f03 12 FMAlgorithm::FMAlgorithm(int opc, int cnc, Timer *tm, AOTTrigon *tri)
kb10uy 19:f0dcf591c5dd 13 {
kb10uy 19:f0dcf591c5dd 14 opcount = opc;
kb10uy 19:f0dcf591c5dd 15 cncount = cnc;
kb10uy 19:f0dcf591c5dd 16 operators = new FMOperator*[opcount];
kb10uy 23:deb76bdf6f03 17 for(int i = 0; i < opcount; i++) operators[i] = new FMOperator(tm, tri);
kb10uy 19:f0dcf591c5dd 18 connections = new FMAlgorithmConnection[cncount];
kb10uy 19:f0dcf591c5dd 19 }
kb10uy 19:f0dcf591c5dd 20
kb10uy 19:f0dcf591c5dd 21 FMAlgorithm::~FMAlgorithm()
kb10uy 19:f0dcf591c5dd 22 {
kb10uy 23:deb76bdf6f03 23 if (operators != NULL) {
kb10uy 23:deb76bdf6f03 24 for(int i = 0; i < opcount; i++) delete operators[i];
kb10uy 23:deb76bdf6f03 25 delete[] operators;
kb10uy 23:deb76bdf6f03 26 }
kb10uy 19:f0dcf591c5dd 27 if (connections != NULL) delete[] connections;
kb10uy 19:f0dcf591c5dd 28 }
kb10uy 19:f0dcf591c5dd 29
kb10uy 23:deb76bdf6f03 30 void FMAlgorithm::setConnection(int t, int s)
kb10uy 19:f0dcf591c5dd 31 {
kb10uy 23:deb76bdf6f03 32 if (cni >= cncount) return;
kb10uy 23:deb76bdf6f03 33 connections[cni].target = t;
kb10uy 23:deb76bdf6f03 34 connections[cni].source = s;
kb10uy 23:deb76bdf6f03 35 connections[cni].allocated = true;
kb10uy 23:deb76bdf6f03 36 cni++;
kb10uy 19:f0dcf591c5dd 37 }
kb10uy 19:f0dcf591c5dd 38
kb10uy 23:deb76bdf6f03 39 void FMAlgorithm::setConnectionIndex(int id) {
kb10uy 23:deb76bdf6f03 40 if (id >= cncount) return;
kb10uy 23:deb76bdf6f03 41 cni = id;
kb10uy 23:deb76bdf6f03 42 }
kb10uy 23:deb76bdf6f03 43
kb10uy 23:deb76bdf6f03 44 void FMAlgorithm::enableCurrentConnection() {
kb10uy 23:deb76bdf6f03 45 if (cni >= cncount) return;
kb10uy 23:deb76bdf6f03 46 connections[cni].allocated = true;
kb10uy 23:deb76bdf6f03 47 }
kb10uy 23:deb76bdf6f03 48
kb10uy 23:deb76bdf6f03 49 void FMAlgorithm::disableCurrentConnection() {
kb10uy 23:deb76bdf6f03 50 if (cni >= cncount) return;
kb10uy 23:deb76bdf6f03 51 connections[cni].allocated = false;
kb10uy 20:8278e607a687 52 }
kb10uy 21:e3014c1bdf9c 53
kb10uy 21:e3014c1bdf9c 54 void FMAlgorithm::noteOn(float freq, double time) {
kb10uy 21:e3014c1bdf9c 55 for(int i = 0; i < opcount; i++) {
kb10uy 21:e3014c1bdf9c 56 if (operators[i] != NULL) operators[i]->attackNote(freq, time);
kb10uy 21:e3014c1bdf9c 57 }
kb10uy 21:e3014c1bdf9c 58 }
kb10uy 21:e3014c1bdf9c 59
kb10uy 21:e3014c1bdf9c 60 void FMAlgorithm::noteOff(double time) {
kb10uy 21:e3014c1bdf9c 61 for(int i = 0; i < opcount; i++) {
kb10uy 21:e3014c1bdf9c 62 if (operators[i] != NULL) operators[i]->releaseNote(time);
kb10uy 21:e3014c1bdf9c 63 }
kb10uy 21:e3014c1bdf9c 64 }
kb10uy 21:e3014c1bdf9c 65
kb10uy 21:e3014c1bdf9c 66 float FMAlgorithm::calculate() {
kb10uy 21:e3014c1bdf9c 67 return calculate(0);
kb10uy 21:e3014c1bdf9c 68 }
kb10uy 21:e3014c1bdf9c 69
kb10uy 21:e3014c1bdf9c 70 float FMAlgorithm::calculate(int opn) {
kb10uy 21:e3014c1bdf9c 71 float sum = 0;
kb10uy 21:e3014c1bdf9c 72 for(int i = 0; i < cncount; i++) {
kb10uy 21:e3014c1bdf9c 73 if (connections[i].allocated && connections[i].target == opn) {
kb10uy 21:e3014c1bdf9c 74 sum += calculate(connections[i].source);
kb10uy 21:e3014c1bdf9c 75 }
kb10uy 21:e3014c1bdf9c 76 }
kb10uy 21:e3014c1bdf9c 77 return operators[opn]->calculate(sum);
kb10uy 21:e3014c1bdf9c 78 }