Kaoru Shoji / Mbed 2 deprecated BLE_MIDI

Utility class for MIDI over Bluetooth LE

Dependencies:   BLE_API mbed nRF51822

Using MIDI over Bluetooth LE

This class enables sending and receiving MIDI packets.

Set up an "BLEMIDI" class instance

Create an instance, and set up to start using it.

Initialization

#include "mbed.h"
#include "BLEDevice.h"
#include "BLEMIDI.h"

BLEDevice device;
BLEMIDI bleMidi(&device);

void disconnectionCallback(Gap::Handle_t handle, Gap::DisconnectionReason_t reason) {
    bleMidi.onBleDisconnection(handle, reason);
}

void connectionCallback(Gap::Handle_t handle, Gap::addr_type_t type, const Gap::address_t addr, const Gap::ConnectionParams_t *params) {
    bleMidi.onBleConnection(handle, type, addr, params);
}

int main(void) {
    device.onConnection(connectionCallback);
    device.onDisconnection(disconnectionCallback);
    
    for (;;) {
        device.waitForEvent();
    }
}

Changing the device name

The default device name is 'MIDI'.
If the another name is preferred, use this constructor. The maximum length of device name is 4 bytes.

Constructor with device name

BLEDevice device;
// BLEMIDI bleMidi(&device);
BLEMIDI bleMidi(&device, "NAME");

Sending MIDI events

For example, send a note on event:

send a note on event

bleMidi.sendNoteOn(0, 63, 127);

About other events, see the BLEMIDI class reference.

Receiving MIDI events

For example, receive note on events:

receive note on events

void onNoteOn(uint8_t channel, uint8_t note, uint8_t velocity) {
    // do something with Note On event
}

bleMidi.attachNoteOn(onNoteOn);

About other events, see the BLEMIDI class reference.

main.cpp@1:cba2eba64f5c, 2015-04-03 (annotated)

Committer:
kshoji
Date:
Fri Apr 03 04:24:01 2015 +0000
Revision:
1:cba2eba64f5c
Parent:
0:83889dc90473
Child:
2:dbc6f81b9ba0
Tested MIDI sending

Who changed what in which revision?

UserRevisionLine numberNew contents of line
kshoji 0:83889dc90473 1 #include "mbed.h"
kshoji 0:83889dc90473 2 #include "BLEDevice.h"
kshoji 0:83889dc90473 3 #include "BLEMIDI.h"
kshoji 0:83889dc90473 4
kshoji 0:83889dc90473 5 BLEDevice device;
kshoji 0:83889dc90473 6 BLEMIDI bleMidi(&device);
kshoji 0:83889dc90473 7
kshoji 0:83889dc90473 8 DigitalOut led1(P0_0);
kshoji 1:cba2eba64f5c 9 InterruptIn button(P0_1);
kshoji 0:83889dc90473 10
kshoji 0:83889dc90473 11 void disconnectionCallback(Gap::Handle_t handle, Gap::DisconnectionReason_t reason) {
kshoji 0:83889dc90473 12 bleMidi.onBleDisconnection(handle, reason);
kshoji 0:83889dc90473 13 }
kshoji 0:83889dc90473 14
kshoji 0:83889dc90473 15 void connectionCallback(Gap::Handle_t handle, Gap::addr_type_t type, const Gap::address_t addr, const Gap::ConnectionParams_t *params) {
kshoji 0:83889dc90473 16 bleMidi.onBleConnection(handle, type, addr, params);
kshoji 0:83889dc90473 17 }
kshoji 0:83889dc90473 18
kshoji 0:83889dc90473 19 void onNoteOn(uint8_t channel, uint8_t note, uint8_t velocity) {
kshoji 0:83889dc90473 20 led1 = 1;
kshoji 1:cba2eba64f5c 21 if (bleMidi.connected()) {
kshoji 1:cba2eba64f5c 22 bleMidi.sendNoteOn(channel, note, velocity);
kshoji 1:cba2eba64f5c 23 }
kshoji 0:83889dc90473 24 }
kshoji 0:83889dc90473 25
kshoji 0:83889dc90473 26 void onNoteOff(uint8_t channel, uint8_t note, uint8_t velocity) {
kshoji 0:83889dc90473 27 led1 = 0;
kshoji 1:cba2eba64f5c 28 if (bleMidi.connected()) {
kshoji 1:cba2eba64f5c 29 bleMidi.sendNoteOff(channel, note, velocity);
kshoji 1:cba2eba64f5c 30 }
kshoji 0:83889dc90473 31 }
kshoji 0:83889dc90473 32
kshoji 0:83889dc90473 33 int main(void) {
kshoji 0:83889dc90473 34 device.onConnection(connectionCallback);
kshoji 0:83889dc90473 35 device.onDisconnection(disconnectionCallback);
kshoji 0:83889dc90473 36
kshoji 0:83889dc90473 37 bleMidi.attachNoteOn(onNoteOn);
kshoji 0:83889dc90473 38 bleMidi.attachNoteOff(onNoteOff);
kshoji 0:83889dc90473 39
kshoji 0:83889dc90473 40 for (;;) {
kshoji 0:83889dc90473 41 device.waitForEvent();
kshoji 0:83889dc90473 42 }
kshoji 0:83889dc90473 43 }