Pair your bluetooth MIDI controller with any standalone MIDI hardware device using one (1) WIDI Master. MacOS/iOS BLE to MIDI Play your standalone MIDI hardware and pair it with your iOS device or Mac with one (1) WIDI Master using smart auto switch mode. The MPC Live is a battery-operated standalone music production center fit for the studio and the stage. Features include a 7” touch display, 16GB of on-board storage (over 10GB of sound content included), Bluetooth MIDI and much more. Sync MPC Live with any Link-enabled apps and devices listed for cross-platform collaboration.
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Technical Q&A QA1831
Q: How can I add Bluetooth LE MIDI support to my application?
A: With the release of iOS 8 and OS X Yosemite, sending and receiving MIDI data is supported using Bluetooth Low Energy connections on any iOS device or Mac that has native Bluetooth Low Energy support. All established connections are secure which means that pairing is enforced and connections cannot be made to your devices without your explicit consent.
![And And](/uploads/1/2/6/6/126645112/442044308.jpg)
After a connection is established, it simply appears as an ordinary MIDI device that any MIDI application can communicate with.
Terminology
There are two key roles involved in a Bluetooth connection; the Central and the Peripheral. In order to have a Bluetooth connection one Central and a minimum of one Peripheral device is required.
The Peripheral's job is to become discoverable and advertise that it has some functionality you can connect to. For Bluetooth MIDI, the peripheral side will advertise its MIDI capabilities. The Central may scan for a Peripheral device that is advertising MIDI capability and then establish a connection.
After a Bluetooth connection has been established, MIDI data can be transferred bi-directionally between the Central and the Peripheral. Both iOS devices and Macs can play either role allowing Mac to Mac, iOS to iOS, Mac to iOS or iOS to Mac connections.
OS X
The Audio MIDI Setup applications provides a Bluetooth configuration icon in the MIDI Studio Panel (see Figure 1) that allows a Mac to play the role of either Central or Peripheral.
Double clicking the Bluetooth configuration icon will open a new window (see Figure 2). This window will allow you to play either the Central or the Peripheral role. In the top part of this window (this is the Peripheral view) click the Advertise button to become discoverable. This will allow the Mac to take on the role of Peripheral. When advertising, the buttons name will change to Stop Advertising which can be pressed to stop discoverability.
In the bottom part of the window (this is the Central view) you can connect to a device advertising MIDI functionality allowing the Mac to take on the role of Central. Once the pairing happens, a new MIDI device will appear in the setup and any application making use of MIDI devices will be able to see the device and communicate with it.
iOS
There are two view controller objects which are part of the CoreAudioKit framework that can be used to manage Bluetooth MIDI connections on iOS. Both of these Bluetooth MIDI view controllers inherit from
UIViewController
.CABTMIDICentralViewController
allows an application to play the role of the Central, which means the application can scan and connect to a Peripheral device.CABTMIDILocalPeripheralViewController
allows an application to play the role of Peripheral, which allows the application to advertise its services and wait for a connection.![Midi Midi](/uploads/1/2/6/6/126645112/478872079.jpg)
Important: CoreAudioKit framework is not available when using the iOS Simulator. The project with fail at build time.
Note: When two devices are not communicating for a while over an established Bluetooth MIDI connection and the connection is unused by the application, the Bluetooth connection will automatically terminate after several minutes to save power.
The code in Listings 1 and 2 demonstrate how these view controllers can be displayed. The techniques shown may be used interchangeably with both view controllers. Please see the View Controller Programming Guide for iOS for more information.
Listing 1 Presenting a CABTMIDICentralViewController
Listing 2 Pushing a CABTMIDILocalPeripheralViewController
References
Document Revision History
Date | Notes |
---|---|
2014-11-11 | New document that summarizes how to use Bluetooth LE MIDI starting with iOS 8 and OS X 10.10 |
Wej Bluetooth Midi Music Hub For Ios And Macos Free
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