Samuel Mokrani / Mbed 2 deprecated USBMIDI_Receive

USBMIDI example

Dependencies:   mbed USBDevice

main.cpp@5:13481cccb3b3, 2013-03-01 (annotated)

Committer:
samux
Date:
Fri Mar 01 13:25:45 2013 +0000
Revision:
5:13481cccb3b3
Parent:
0:128aa8026f32 
use latest USBDevice lib (FRDM-KL25Z support)

Who changed what in which revision?

UserRevisionLine numberNew contents of line
samux 0:128aa8026f32 1 // Hello World example for the USBMIDI library
samux 0:128aa8026f32 2
samux 0:128aa8026f32 3 #include "mbed.h"
samux 0:128aa8026f32 4 #include "USBMIDI.h"
samux 0:128aa8026f32 5
samux 0:128aa8026f32 6 //USBMIDI object
samux 0:128aa8026f32 7 USBMIDI midi;
samux 0:128aa8026f32 8
samux 0:128aa8026f32 9
samux 0:128aa8026f32 10 // Leds which will be switch on or off according to a MIDImessage
samux 0:128aa8026f32 11 BusOut leds(LED1, LED2, LED3, LED4);
samux 0:128aa8026f32 12
samux 0:128aa8026f32 13 BusInOut buttons(p22, p23, p24, p25);
samux 0:128aa8026f32 14
samux 0:128aa8026f32 15 void show_message(MIDIMessage msg) {
samux 0:128aa8026f32 16 switch (msg.type()) {
samux 0:128aa8026f32 17 case MIDIMessage::NoteOnType:
samux 0:128aa8026f32 18 switch (msg.key()) {
samux 0:128aa8026f32 19 case 48:
samux 0:128aa8026f32 20 leds = (1 << 0);
samux 0:128aa8026f32 21 break;
samux 0:128aa8026f32 22 case 49:
samux 0:128aa8026f32 23 leds = (1 << 1);
samux 0:128aa8026f32 24 break;
samux 0:128aa8026f32 25 case 50:
samux 0:128aa8026f32 26 leds = (1 << 2);
samux 0:128aa8026f32 27 break;
samux 0:128aa8026f32 28 case 51:
samux 0:128aa8026f32 29 leds = (1 << 3);
samux 0:128aa8026f32 30 break;
samux 0:128aa8026f32 31 }
samux 0:128aa8026f32 32 break;
samux 0:128aa8026f32 33 case MIDIMessage::NoteOffType:
samux 0:128aa8026f32 34 default:
samux 0:128aa8026f32 35 leds = 0;
samux 0:128aa8026f32 36 }
samux 0:128aa8026f32 37 }
samux 0:128aa8026f32 38
samux 0:128aa8026f32 39 int main() {
samux 0:128aa8026f32 40 uint8_t bus = 0;
samux 0:128aa8026f32 41 uint8_t p_bus = 0;
samux 0:128aa8026f32 42
samux 0:128aa8026f32 43 // call back for messages received
samux 0:128aa8026f32 44 midi.attach(show_message);
samux 0:128aa8026f32 45
samux 0:128aa8026f32 46 while (1) {
samux 0:128aa8026f32 47
samux 0:128aa8026f32 48 //if buttons state changes, send a MIDI message
samux 0:128aa8026f32 49 bus = buttons.read();
samux 0:128aa8026f32 50 for (int i = 0; i < 4; i++) {
samux 0:128aa8026f32 51 if ( (bus & (1 << i)) != (p_bus & (1 << i))) {
samux 0:128aa8026f32 52 if (bus & (1 << i)) {
samux 0:128aa8026f32 53 midi.write(MIDIMessage::NoteOn(48 + i));
samux 0:128aa8026f32 54 } else if ( !(bus & (1 << i)) ) {
samux 0:128aa8026f32 55 midi.write(MIDIMessage::NoteOff(48 + i));
samux 0:128aa8026f32 56 }
samux 0:128aa8026f32 57
samux 0:128aa8026f32 58 }
samux 0:128aa8026f32 59 }
samux 0:128aa8026f32 60 wait(0.001);
samux 0:128aa8026f32 61 p_bus = bus;
samux 0:128aa8026f32 62 }
samux 0:128aa8026f32 63 }