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Refactor to idiomatic Swift #1

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Refactor to idiomatic Swift #1

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b82fe14
Refactor to idiomatic Swift
jayjun Oct 23, 2016
8496aca
Fix setSetting() parameter names
jayjun Oct 23, 2016
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73 changes: 30 additions & 43 deletions Examples/SwiftLinuxSerialTest/Sources/main.swift
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Original file line number Diff line number Diff line change
@@ -1,61 +1,48 @@
import Glibc
import Foundation
import SwiftLinuxSerial

print("You should do a loopback i.e short the TX and RX pins of the target serial port before testing.")

let testString : String = "The big brown fox jumps over the lazy dog 01234567890."
let testString: String = "The quick brown fox jumps over the lazy dog 01234567890."

let arguments = CommandLine.arguments

if(arguments.count < 2){
print("Need Serial Port name example /dev/ttyUSB0 as first argument");
exit(1)
guard arguments.count >= 2 else {
print("Need serial port name, e.g. /dev/ttyUSB0 as the first argument.")
exit(1)
}

let portName = arguments[1]
let serialPort: SerialPort = SerialPort(name: portName)

let serialHandler : SwiftLinuxSerial = SwiftLinuxSerial(serialPortName : portName)

let status = serialHandler.openPort(receive : true, transmit : true)

if(status.openSuccess){
print("Serial port " + portName + " opened successfully")
} else {
print("Serial port " + portName + " failed to open. You might need root permissions")
exit(1)
}

serialHandler.setPortSettings(receiveBaud : SwiftLinuxSerialBaud.BAUD_B9600,
transmitBaud : SwiftLinuxSerialBaud.BAUD_B9600,
charsToReadBeforeReturn : 1)

do {
try serialPort.openPort()
print("Serial port \(portName) opened successfully.")
defer {
serialPort.closePort()
}

let stringCharacterCount = testString.characters.count
serialPort.setSettings(receiveRate: .baud9600,
transmitRate: .baud9600,
minimumBytesToRead: 1)

print("Writing test string <" + testString + "> of " + String(stringCharacterCount) + " characters to serial port")
print("Writing test string <\(testString)> of \(testString.characters.count) characters to serial port")

var bytesWritten = serialHandler.writeStringToPortBlocking(stringToWrite : testString)
var bytesWritten = try serialPort.writeString(testString)

print("Sucessfully wrote " + String(bytesWritten) + " bytes")
print("Successfully wrote \(bytesWritten) bytes")
print("Waiting to receive what was written...")

print("Waiting to receive what was written...")
let stringReceived = try serialPort.readString(ofLength: bytesWritten)

let stringReceived = serialHandler.readStringFromPortBlocking(bytesToReadFor : bytesWritten)
if testString == stringReceived {
print("Received string is the same as transmitted string. Test successful!")
} else {
print("Uh oh! Received string is not the same as what was transmitted. This was what we received,")
print("<\(stringReceived)>")
}

serialHandler.closePort()

if(testString == stringReceived){
print("Received String is the same as transmitted string. Test successful!")
} else {
print("Uh oh! Received String is not the same as what was transmitted. This was what we received")
print("<" + stringReceived + ">")
} catch PortError.failedToOpen {
print("Serial port \(portName) failed to open. You might need root permissions.")
} catch {
print("Error: \(error)")
}









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