private void FindDevice()
{
const byte commandPosition = 1;
const int maxPackageLenght = 20;
const int deviceTypePosition = 3;
byte deviceNumber = 1;
bool sentSuccessful;
if (!serialPort.IsOpen)
{
serialPort.Open();
}
for (byte slaveAddress = startAddress; slaveAddress < endAddress; ++slaveAddress)
{
byte[] packageToSlave = new byte[maxPackageLenght];
byte[] packageFromSlave = new byte[maxPackageLenght];
packageToSlave = TransferData.MakePackage(slaveAddress, (byte)ModbusCommand.FindDevices);
sentSuccessful = TransferData.SendPackage(serialPort, packageToSlave);
if (TransferData.ReadAnswer(serialPort, packageFromSlave))
{
if (packageFromSlave[commandPosition] == (byte)ModbusCommand.FindDevices)
{
if (AllSlaveDevices != null)
{
AllSlaveDevices.Add(new FoundSlaveDevice(slaveAddress, packageFromSlave[deviceTypePosition], deviceNumber));
}
else
{
AllSlaveDevices = new List <FoundSlaveDevice>
{
new FoundSlaveDevice(slaveAddress, packageFromSlave[deviceTypePosition], deviceNumber)
};
}
deviceNumber++;
}
devicesFound = true;
}
}
serialPort.Close();
}
private void FindDevice()
{
const byte commandPosition = 1;
foreach (string portName in availablePortNames)
{
byte[] packageToSlave = new byte[20];
byte[] packageFromSlave = new byte[20];
if (usedSerialPort.IsOpen)
{
usedSerialPort.Close();
}
usedSerialPort.PortName = portName;
if (!usedSerialPort.IsOpen)
{
usedSerialPort.Open();
usedSerialPort.Close();
usedSerialPort.Open();
}
packageToSlave = TransferData.MakePackage(converterAddress, (byte)ModbusCommand.FindMaster);
TransferData.SendPackage(usedSerialPort, packageToSlave);
if (TransferData.ReadAnswer(usedSerialPort, packageFromSlave))
{
if (packageFromSlave[commandPosition] == (byte)ModbusCommand.FindMaster)
{
converterFounded = true;
}
}
if (usedSerialPort.IsOpen)
{
usedSerialPort.Close();
}
}
}