How to send a byte array to ble in Swift 3?

Question

I am trying to send data to a ble, but my device only accepts byte arrays. How do I convert data to byte array and send it in Swift 3?

print("hex value is",hexRepresentation)
print("pairing code",pairingcode)
var aaa = calcchecksum(data:"4A6BF961585C3F86DCEB562CEC51A4CE")

if let auxData = (hexRepresentation+"4A6BF961585C3F86DCEB562CEC51A4CE"+aaa).data(using: .utf8), let lChar = self.mainCharacteristic {   
    let bytearraydata = [UInt8](auxData) as Data?

    aPeripheral.writeValue(bytearraydata, for: lChar, type: .withResponse
}

This might help: stackoverflow.com/a/40278391/1187415.

Martin R
– Martin R

2017-06-29 06:46:52 +00:00
Commented Jun 29, 2017 at 6:46 — Martin R
– Martin R, Commented Jun 29, 2017 at 6:46

Deepak Tagadiya · Accepted Answer · 2017-07-12 13:53:45Z

1

Find to which CBCharacteristic property is write.

  let data:[UInt8] = [0x01, 0x03, 0x012, 0x01]
  let writeData =  Data(bytes: data)

  self.selectPeripheral.writeValue(writeData, for: writeCharacteristic, 
  type: WithResponse)

answered Jul 12, 2017 at 13:53

Deepak Tagadiya

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