I get the information passed through the serial port of my arduino with this code:
cnx.Open();
string carro = cnx.ReadLine();
textBox1.Text = carro;
cnx.Close();
I would like to know if it would be possible for me to give two arduino print and send two values to the serial port with different information? and how would I get these two information with readline in my C # program?
You can write to a Print only, and separate it by a common character, for example a ';' it would look like this:
arduino sends: "ABC-1234; GM; CELTA; WHITE"
In C #:
string linha = cnx.ReadLine();
string[] valores = linha.Split(';');
string placa = valores[0]; //ABC-1234
string marca = valores[1]; //GM
string modelo = valores[2]; //CELTA
string cor = valores[3]; //BRANCO
As I understand, this is what you need
You could read the serial port information with ReadLine() , but you would need to create a listener so that every time you had data available on the port, they were read.
The suggestion is that you use the event DataReceived , which will be called when data is being read *.
For testing, you can upload the program SerialEvent of Arduino:
Andwiththefollowingexamplecode,youcansendandreceivedatathroughtheserialport:
usingSystem;usingSystem.IO.Ports;namespaceArduinoSerial{classArduinoSerial{privatestaticSerialPortportaSerial=newSerialPort("COM3",
9600, Parity.None, 8, StopBits.One);
static void Main(string[] args)
{
// quando há dados na porta, chamamos dadosRecebidos
portaSerial.DataReceived += new SerialDataReceivedEventHandler(dadosRecebidos);
// criar a conexão
portaSerial.Open();
// mantendo o programa rodando
while (portaSerial.IsOpen)
{
// o que escrevermos no console, vai pra porta serial
portaSerial.WriteLine(Console.ReadLine());
}
}
// dadosRecebidos imprime a informação de volta no console
static void dadosRecebidos(object sender, SerialDataReceivedEventArgs e)
{
SerialPort sp = (SerialPort)sender;
string dados = sp.ReadLine();
Console.WriteLine(dados);
}
}
}
Result:
Inthe
SerialEventprogramoftheArduino,youwillseethattosenddata forserialport,Serial.println(inputString);isused.Modifying theprogram,andreplacinginputStringwithwhateveryouwant,you youcansenddifferentdatatoyourC#program.
*Inthedocumentationwhatisactuallyindicatedistouse BytesToRead to see if there is data to be read.
Sources:
How to Read and Write from the Serial Port
Server Client send / receive simple text
C # Serial Port Listener