/// <summary>
/// Open a connection to the specified GPIO server.
/// </summary>
/// <param name="servername">Server domain name or IP address.</param>
public static void Connect(Primitive servername)
{
IPAddress serveraddress;
// Check for invalid parameter
if (Uri.CheckHostName((string)servername) == UriHostNameType.Unknown)
{
throw new GPIOException("GPIO server name is invalid");
}
// Resolve the server IP address
try
{
serveraddress = Dns.GetHostAddresses((string)servername)[0];
}
catch
{
throw new GPIOException("GPIO server name cannot be resolved");
}
try
{
// Create RPC client object
server = new gpio_server_oncrpcClient(serveraddress, OncRpcProtocols.ONCRPC_UDP);
// Reduce timeout to 2 seconds
OncRpcUdpClient c = (OncRpcUdpClient)server.GetClient();
c.setTimeout(2000);
c.setRetransmissionTimeout(500);
}
catch
{
throw new GPIOException("GPIO server handle failed");
}
}
/// <summary>
/// GPIO pin object constructor.
/// </summary>
/// <param name="server">ONC/RPC server handle.</param>
/// <param name="number">GPIO pin number.</param>
/// <remarks>
/// Do not call this constructor directly; use the Server.OpenPin() factory method instead.
/// </remarks>
public Pin(gpio_server_oncrpcClient server, int number)
{
this.server = server;
this.number = number;
}