How do I interact with external accessories in Swift?

To interact with external accessories using Swift, you will typically use the ExternalAccessory framework provided by Apple. This framework allows your app to communicate with accessories that support the MFi (Made for iPhone) program. Below is a simple example of how to set up communication with an external accessory.

import ExternalAccessory class AccessoryManager: NSObject, EAAccessoryDelegate { var session: EASession? var accessory: EAAccessory? func connectToAccessory(accessory: EAAccessory) { self.accessory = accessory accessory.delegate = self // Create a session for communication if let protocolString = accessory.protocolStrings.first { session = EASession(accessory: accessory, forProtocol: protocolString) if let inputStream = session?.inputStream, let outputStream = session?.outputStream { inputStream.delegate = self outputStream.delegate = self inputStream.schedule(in: .current, forMode: .default) outputStream.schedule(in: .current, forMode: .default) inputStream.open() outputStream.open() } } } // Implement EAAccessoryDelegate methods as needed }

Swift External Accessories EASession EAAccessory MFi program

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