USBMIDI_DrumExample - Simple example for triggering actuators based on …

Users » simon » Code » USBMIDI_DrumExample

Simple example for triggering actuators based on midi signals

main.cpp@0:040c2c8ca5eb, 2011-02-20 (annotated)

User	Revision	Line number	New contents of line
simon	0:040c2c8ca5eb	1	// Drums via MIDI!
simon	0:040c2c8ca5eb	2	#include "mbed.h"
simon	0:040c2c8ca5eb	3	#include "USBMIDI.h"
simon	0:040c2c8ca5eb	4
simon	0:040c2c8ca5eb	5	DigitalOut drum[] = {p5, p6, p7, p8}; // the four outputs
simon	0:040c2c8ca5eb	6
simon	0:040c2c8ca5eb	7	void drums(int id, bool on) {
simon	0:040c2c8ca5eb	8	if(id >= 0 && id <= 3) {
simon	0:040c2c8ca5eb	9	drum[id] = on;
simon	0:040c2c8ca5eb	10	}
simon	0:040c2c8ca5eb	11	}
simon	0:040c2c8ca5eb	12
simon	0:040c2c8ca5eb	13	void do_message(MIDIMessage msg) {
simon	0:040c2c8ca5eb	14	switch (msg.type()) {
simon	0:040c2c8ca5eb	15	case MIDIMessage::NoteOnType:
simon	0:040c2c8ca5eb	16	drums(msg.key() - 64, msg.velocity() != 0);
simon	0:040c2c8ca5eb	17	break;
simon	0:040c2c8ca5eb	18	case MIDIMessage::NoteOffType:
simon	0:040c2c8ca5eb	19	drums(msg.key() - 64, 0);
simon	0:040c2c8ca5eb	20	break;
simon	0:040c2c8ca5eb	21	}
simon	0:040c2c8ca5eb	22	}
simon	0:040c2c8ca5eb	23
simon	0:040c2c8ca5eb	24	USBMIDI midi;
simon	0:040c2c8ca5eb	25
simon	0:040c2c8ca5eb	26	int main() {
simon	0:040c2c8ca5eb	27	midi.attach(do_message); // call back for messages received
simon	0:040c2c8ca5eb	28	while (1);
simon	0:040c2c8ca5eb	29	}