86 lines
2.5 KiB
Swift
86 lines
2.5 KiB
Swift
import Foundation
|
|
import SwiftSerial
|
|
|
|
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 quick brown fox jumps over the lazy dog 01234567890."
|
|
|
|
let numberOfMultiNewLineTest : Int = 5
|
|
|
|
let test3Strings: String = testString + "\n" + testString + "\n" + testString + "\n"
|
|
|
|
let arguments = CommandLine.arguments
|
|
guard arguments.count >= 2 else {
|
|
print("Need serial port name, e.g. /dev/ttyUSB0 or /dev/cu.usbserial as the first argument.")
|
|
exit(1)
|
|
}
|
|
|
|
let portName = arguments[1]
|
|
let serialPort: SerialPort = SerialPort(path: portName)
|
|
|
|
do {
|
|
|
|
print("Attempting to open port: \(portName)")
|
|
try serialPort.openPort()
|
|
print("Serial port \(portName) opened successfully.")
|
|
defer {
|
|
serialPort.closePort()
|
|
print("Port Closed")
|
|
}
|
|
|
|
serialPort.setSettings(receiveRate: .baud9600,
|
|
transmitRate: .baud9600,
|
|
minimumBytesToRead: 1)
|
|
|
|
print("Writing test string <\(testString)> of \(testString.characters.count) characters to serial port")
|
|
|
|
var bytesWritten = try serialPort.writeString(testString)
|
|
|
|
print("Successfully wrote \(bytesWritten) bytes")
|
|
print("Waiting to receive what was written...")
|
|
|
|
let stringReceived = try serialPort.readString(ofLength: 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)>")
|
|
}
|
|
|
|
|
|
print("Now testing reading/writing of \(numberOfMultiNewLineTest) lines")
|
|
|
|
var multiLineString: String = ""
|
|
|
|
|
|
for i in 1...numberOfMultiNewLineTest {
|
|
multiLineString += testString + "\n"
|
|
}
|
|
|
|
print("Now writing multiLineString")
|
|
|
|
var _ = try serialPort.writeString(multiLineString)
|
|
|
|
|
|
for i in 1...numberOfMultiNewLineTest {
|
|
let stringReceived = try serialPort.readLine()
|
|
|
|
if testString == stringReceived {
|
|
print("Received string \(i) is the same as transmitted section. Moving on...")
|
|
} else {
|
|
print("Uh oh! Received string \(i) is not the same as what was transmitted. This was what we received,")
|
|
print("<\(stringReceived)>")
|
|
break
|
|
}
|
|
}
|
|
|
|
print("End of example");
|
|
|
|
|
|
} catch PortError.failedToOpen {
|
|
print("Serial port \(portName) failed to open. You might need root permissions.")
|
|
} catch {
|
|
print("Error: \(error)")
|
|
}
|