A thread-safe Swift wrapper around a modified version of George Menie's Xmodem.
- Add the project to your Xcode project by using File > Swift Packages > Add package dependency and entering
https://github.com/nrbtech/CXmodem.git, or by modifying yourPackage.swift:
import PackageDescription
let package = Package(
name: "MyAwesomeProject",
dependencies: [
.Package(url: "https://github.com/nrbtech/CXmodem.git",
majorVersion: 1)
]
)- Import the CXmodem module.
import CXmodemWhen providing the completeCallback parameter, CXmodem's send and receive functions are automatically performed on a background thread:
let operationQueue = CXmodem.send(data: dataToSend, sendChunkSize: 20, sendBytesOnWireCallback: { (toSendOnWire) in
serialPort.send(data: toSendOnWire)
}) { (sendResult) in
switch sendResult {
case .success:
print("Send complete!")
case .fail(error: let e):
print("Error: \(e.rawValue)")
}
}
// call when receiving data on "wire". Can be called on any thread but the operation queue must be passed
CXmodem.receivedBytesOnWire(queue: operationQueue, data: receivedData)You can also optionally provide the queue to use for the sendBytesOnWireCallback, the final completeCallback and the operation queue.
If you do not provide a callback the functions are blocking, so must be performed on a background thread. :
let callback = { (sendResult: CXmodem.SendResult) -> Void in
switch sendResult {
case .success:
print("Send complete!")
case .fail(error: let e):
print("Error: \(e.rawValue)")
}
}
let operationQueue = DispatchQueue(label: "Xmodem send", qos: .background)
operationQueue.async {
let sendResult = CXmodem.send(data: dataToSend, sendChunkSize: 20) { (toSendOnWire) in
serialPort.send(data: toSendOnWire)
}
DispatchQueue.main.async {
callback(sendResult)
}
}
// call when receiving data on "wire". Can be called on any thread but the operation queue must be passed
CXmodem.receivedBytesOnWire(queue: operationQueue, data: receivedData)
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