// This function opens the com port and attempts to connect with the validator. It then negotiates
// the keys for encryption and performs some other setup commands.
private bool ConnectToValidator()
{
// setup the timer
reconnectionTimer.Interval = reconnectionInterval * 1000; // for ms
// run for number of attempts specified
for (int i = 0; i < reconnectionAttempts; i++)
{
// reset timer
reconnectionTimer.Enabled = true;
// close com port in case it was open
Validator.SSPComms.CloseComPort();
// turn encryption off for first stage
Validator.CommandStructure.EncryptionStatus = false;
// open com port and negotiate keys
if (Validator.OpenComPort(textBox1) && Validator.NegotiateKeys(textBox1))
{
Validator.CommandStructure.EncryptionStatus = true; // now encrypting
// find the max protocol version this validator supports
byte maxPVersion = FindMaxProtocolVersion();
if (maxPVersion > 6)
{
Validator.SetProtocolVersion(maxPVersion, textBox1);
}
else
{
MessageBox.Show("This program does not support units under protocol version 6, update firmware.", "ERROR");
return(false);
}
// get info from the validator and store useful vars
Validator.SetupRequest(textBox1);
// check this unit is supported by this program
if (!IsUnitTypeSupported(Validator.UnitType))
{
MessageBox.Show("Unsupported unit type, this SDK supports the BV series and the NV series (excluding the NV11)");
Application.Exit();
return(false);
}
// inhibits, this sets which channels can receive notes
Validator.SetInhibits(textBox1);
// enable, this allows the validator to receive and act on commands
Validator.EnableValidator(textBox1);
return(true);
}
while (reconnectionTimer.Enabled)
{
Application.DoEvents(); // wait for reconnectionTimer to tick
}
}
return(false);
}
// The main program loop, this is to control the validator, it polls at
// a value set in this class (pollTimer).
public void MainLoop()
{
Enabled = true;
// Connect to the validators
ConnectToNoteValidator(textBox1);
ConnectToHopper(textBox1);
// Enable the validators
Validator.EnableValidator(textBox1);
Hopper.EnableValidator(textBox1);
// While either one is still running
while (!CHelpers.Shutdown)
{
// Setup form layout on first run
if (!FormSetup)
{
SetupFormLayout();
FormSetup = true;
}
// If the hopper is supposed to be running but the poll fails
if (hopperRunning && !Hopper.DoPoll(textBox1))
{
textBox1.AppendText("Lost connection to SMART Hopper\r\n");
hopperRunning = false;
// If the other device has also stopped, close the port
if (!validatorRunning)
{
LibraryHandler.ClosePort();
}
// Create a reconnection thread, this allows this loop to continue executing
// and polling the other validator
Thread t = new Thread(ReconnectHopper);
t.Start();
}
// If the validator is supposed to be running but the poll fails
if (validatorRunning && !Validator.DoPoll(textBox1))
{
textBox1.AppendText("Lost connection to note validator\r\n");
validatorRunning = false;
// If the other device has also stopped, close the port
if (!hopperRunning)
{
LibraryHandler.ClosePort();
}
// Create a reconnection thread, this allows this loop to continue executing
// and polling the other validator
Thread t = new Thread(ReconnectValidator);
t.Start();
}
UpdateUI();
timer1.Enabled = true;
while (timer1.Enabled)
{
Application.DoEvents();
}
}
LibraryHandler.ClosePort();
btnRun.Enabled = true;
btnHalt.Enabled = false;
}