[Swift] characteristic read, write

//read
devicePeripheral.readValue(for: characteristic)

//write
var parameter = NSInteger(0x31)
let data = Data(bytes: &parameter, count: 1)
devicePeripheral.writeValue(data, for: characteristic, type: .withResponse)

 

연결된 peripheral 의 characteristic 은 배열에 따로 저장해 두자.