Austin Suszek / Mbed 2 deprecated MIDISynthesizer

A MIDI piano synthesizer that implements the Karplus Strong physical modeling algorithm.

Dependencies:   mbed USBDevice PinDetect

main.cpp@22:b800e1766647, 2016-04-25 (annotated)

Committer:
asuszek
Date:
Mon Apr 25 23:58:15 2016 +0000
Revision:
22:b800e1766647
Parent:
18:26d93c5b9bb6 
Fixed LED bug

Who changed what in which revision?

UserRevisionLine numberNew contents of line
asuszek 2:e21bd39bdf46 1 /* Karplus Strong MIDI synthesizer.
asuszek 2:e21bd39bdf46 2 *
asuszek 2:e21bd39bdf46 3 * @author Austin Suszek
asuszek 2:e21bd39bdf46 4 * @author Nick Delfino
asuszek 2:e21bd39bdf46 5 */
asuszek 0:cad8dafb22be 6
asuszek 9:1e012f67470c 7 #include "Audio/AudioEngine.h"
asuszek 2:e21bd39bdf46 8 #include "Constants.h"
asuszek 0:cad8dafb22be 9 #include "mbed.h"
asuszek 6:688698f814c0 10 #include "PinDetect.h"
asuszek 0:cad8dafb22be 11 #include "USBMIDI.h"
ndelfino 8:deaedb59243e 12 #include "LEDController.h"
asuszek 0:cad8dafb22be 13
asuszek 0:cad8dafb22be 14 Serial pc(USBTX, USBRX);
asuszek 6:688698f814c0 15
asuszek 0:cad8dafb22be 16 USBMIDI midi;
asuszek 6:688698f814c0 17 AudioEngine audioEngine;
ndelfino 8:deaedb59243e 18 LEDController ledController;
ndelfino 8:deaedb59243e 19
asuszek 18:26d93c5b9bb6 20 // Initialize the LEDs on the controller.
asuszek 18:26d93c5b9bb6 21 DigitalOut led1(LED1);
asuszek 18:26d93c5b9bb6 22 DigitalOut led2(LED2);
asuszek 18:26d93c5b9bb6 23 DigitalOut led3(LED3);
asuszek 18:26d93c5b9bb6 24 DigitalOut led4(LED4);
asuszek 18:26d93c5b9bb6 25 // Reuse the binary clock from the homework.
asuszek 18:26d93c5b9bb6 26 extern "C" int my_leds(int value);
asuszek 6:688698f814c0 27
asuszek 6:688698f814c0 28 // Buttons for the toggling of synths.
asuszek 6:688698f814c0 29 PinDetect nextSynth(p27);
asuszek 6:688698f814c0 30 PinDetect prevSynth(p28);
asuszek 0:cad8dafb22be 31
asuszek 2:e21bd39bdf46 32 void midiMessageReceived(MIDIMessage message);
asuszek 2:e21bd39bdf46 33
asuszek 6:688698f814c0 34 void nextSynthPressed();
asuszek 6:688698f814c0 35 void prevSynthPressed();
asuszek 6:688698f814c0 36
asuszek 2:e21bd39bdf46 37 int main() {
asuszek 2:e21bd39bdf46 38 // Attach the function to handle all incoming MIDI events.
asuszek 2:e21bd39bdf46 39 midi.attach(midiMessageReceived);
asuszek 6:688698f814c0 40
asuszek 6:688698f814c0 41 // Attach the synth toggling buttons.
asuszek 6:688698f814c0 42 nextSynth.attach_asserted(&nextSynthPressed);
asuszek 6:688698f814c0 43 prevSynth.attach_asserted(&prevSynthPressed);
asuszek 6:688698f814c0 44 nextSynth.setSampleFrequency();
asuszek 6:688698f814c0 45 prevSynth.setSampleFrequency();
asuszek 18:26d93c5b9bb6 46
asuszek 18:26d93c5b9bb6 47 // Start the index counter at number 1.
asuszek 18:26d93c5b9bb6 48 my_leds(1);
asuszek 2:e21bd39bdf46 49
asuszek 2:e21bd39bdf46 50 while (1) {}
asuszek 2:e21bd39bdf46 51 }
asuszek 2:e21bd39bdf46 52
asuszek 2:e21bd39bdf46 53 /*
asuszek 2:e21bd39bdf46 54 * The handler for all incoming MIDI messages.
asuszek 2:e21bd39bdf46 55 */
asuszek 0:cad8dafb22be 56 void midiMessageReceived(MIDIMessage message) {
asuszek 2:e21bd39bdf46 57 #ifdef DEBUG
asuszek 6:688698f814c0 58 pc.printf("Message Received\r\n");
asuszek 2:e21bd39bdf46 59 #endif
asuszek 0:cad8dafb22be 60
asuszek 6:688698f814c0 61 int key;
asuszek 6:688698f814c0 62 int velocity;
asuszek 6:688698f814c0 63
asuszek 0:cad8dafb22be 64 switch (message.type()) {
asuszek 0:cad8dafb22be 65 case MIDIMessage::NoteOnType:
asuszek 6:688698f814c0 66 key = message.key();
asuszek 6:688698f814c0 67 velocity = message.velocity();
asuszek 6:688698f814c0 68
asuszek 6:688698f814c0 69 audioEngine.midiNoteOn(key, velocity);
ndelfino 8:deaedb59243e 70
ndelfino 8:deaedb59243e 71 ledController.identifyKeyForLed(key, 1);
asuszek 6:688698f814c0 72
asuszek 2:e21bd39bdf46 73 #ifdef DEBUG
asuszek 6:688698f814c0 74 pc.printf("\tType: Note On\r\n");
asuszek 6:688698f814c0 75 pc.printf("\tNote: %d\tVelocity: %d\r\n", key, velocity);
asuszek 2:e21bd39bdf46 76 #endif
asuszek 0:cad8dafb22be 77 break;
asuszek 0:cad8dafb22be 78 case MIDIMessage::NoteOffType:
asuszek 6:688698f814c0 79 key = message.key();
asuszek 6:688698f814c0 80 velocity = message.velocity();
asuszek 6:688698f814c0 81
asuszek 6:688698f814c0 82 audioEngine.midiNoteOff(key);
ndelfino 8:deaedb59243e 83
ndelfino 8:deaedb59243e 84 ledController.identifyKeyForLed(key, -1);
asuszek 6:688698f814c0 85
asuszek 2:e21bd39bdf46 86 #ifdef DEBUG
asuszek 6:688698f814c0 87 pc.printf("\tType: Note Off\r\n");
asuszek 6:688698f814c0 88 pc.printf("\tNote: %d\r\n", key);
asuszek 2:e21bd39bdf46 89 #endif
asuszek 0:cad8dafb22be 90 break;
asuszek 0:cad8dafb22be 91 default:
asuszek 2:e21bd39bdf46 92 // no-op
asuszek 2:e21bd39bdf46 93 break;
asuszek 0:cad8dafb22be 94 }
asuszek 0:cad8dafb22be 95 }
asuszek 0:cad8dafb22be 96
asuszek 6:688698f814c0 97 void nextSynthPressed() {
asuszek 6:688698f814c0 98 #ifdef DEBUG
asuszek 6:688698f814c0 99 pc.printf("Toggling to next synthesizer.r\n");
asuszek 6:688698f814c0 100 #endif
asuszek 6:688698f814c0 101
asuszek 18:26d93c5b9bb6 102 int nextIndex = audioEngine.nextSynth(1);
asuszek 18:26d93c5b9bb6 103 my_leds(nextIndex + 1);
asuszek 6:688698f814c0 104 }
asuszek 6:688698f814c0 105
asuszek 6:688698f814c0 106 void prevSynthPressed() {
asuszek 6:688698f814c0 107 #ifdef DEBUG
asuszek 6:688698f814c0 108 pc.printf("Toggling to previous synthesizer.r\n");
asuszek 6:688698f814c0 109 #endif
asuszek 6:688698f814c0 110
asuszek 18:26d93c5b9bb6 111 int nextIndex = audioEngine.nextSynth(-1);
asuszek 18:26d93c5b9bb6 112 my_leds(nextIndex + 1);
asuszek 6:688698f814c0 113 }
asuszek 6:688698f814c0 114