public PanelCommandHandle EnqueueCommand(PanelCommand expcmd)
{
PanelCommandHandle cmdhdl = new PanelCommandHandle(new AutoResetEvent(false), expcmd);
Task.Run(() =>
{
lock (pending_command_queue_lock)
pending_command_queue.Enqueue(cmdhdl);
});
return(cmdhdl);
}
public PanelCommandHandle[] EnqueueCommands(PanelCommand[] expcmds)
{
PanelCommandHandle[] cmdhdls = new PanelCommandHandle[expcmds.Length];
for (int index_counter = 0; index_counter < expcmds.Length; index_counter++)
{
cmdhdls[index_counter] = new PanelCommandHandle(new AutoResetEvent(false), expcmds[index_counter]);
}
Task.Run(() =>
{
lock (pending_command_queue_lock)
for (int index_counter = 0; index_counter < expcmds.Length; index_counter++)
{
pending_command_queue.Enqueue(cmdhdls[index_counter]);
}
});
return(cmdhdls);
}
void commLoop()
{
long total_errors = 0;
comm_running = true;
BlockingConnectionReset();
while (comm_running)
{
int transmit_queue_size = 0;
lock (pending_command_queue_lock)
transmit_queue_size = pending_command_queue.Count;
if (transmit_queue_size > 0)
{
comm_busy = true;
Queue <PanelCommandHandle> current_commands = new Queue <PanelCommandHandle>();
lock (pending_command_queue_lock)
for (int object_counter = 0; object_counter < cur_command_buf_size && (transmit_queue_size - object_counter) > 0; object_counter++)
{
current_commands.Enqueue(pending_command_queue.Dequeue());
}
int rep_counter = 0;
BlockingConnectionReset();
Action process_command = delegate
{
while (comm_running)
{
while (comm_running)
{
try
{
for (int object_counter = 0; object_counter < current_commands.Count; object_counter++)
{
netStream.Write(current_commands.ElementAt(object_counter).Command.TxPacket, 0, current_commands.ElementAt(object_counter).Command.TxPacket.Length); //write current commands
}
int success_counter = 0;
for (int object_counter = 0; object_counter < current_commands.Count; object_counter++)
{
byte[] resp_buffer = new byte[3];
netStream.Read(resp_buffer, 0, 3); //read ack
if (ack.SequenceEqual(resp_buffer))
{
if (current_commands.ElementAt(object_counter).Command.ResponseExpected)
{
resp_buffer = new byte[current_commands.ElementAt(object_counter).Command.ResponseLength];
netStream.Read(resp_buffer, 0, current_commands.ElementAt(object_counter).Command.ResponseLength);
if (Utilities.CRC8(resp_buffer, current_commands.ElementAt(object_counter).Command.ResponseLength - 1) == resp_buffer[current_commands.ElementAt(object_counter).Command.ResponseLength - 1])
{
current_commands.ElementAt(object_counter).Command.RxPacket = resp_buffer;
//return;
success_counter++;
}
else
{
Console.WriteLine("Failed CRC Check.");
break; //failure. restart loop
}
}
else
{
success_counter++; //return;
}
}
else
{
Console.WriteLine("expected ack. not received.");
break; //failure. restart loop
}
}
if (success_counter == current_commands.Count)
{
return;
}
}
catch (Exception ex)
{
Console.WriteLine("Process Command Failure ");
//rep_counter++;
break;
}
}
//if this code has been reached then an error has occured
Thread.Sleep((cur_command_buf_size + 1) * DELAY_PER_FAILURE);
cur_command_buf_size = MIN_COMMAND_BUF_SIZE; //set the buffer size to 1
//dequeue all but one command. there will always be at least one command in the current commands queue
if (current_commands.Count > 1)
{
lock (pending_command_queue_lock)
while (current_commands.Count != MIN_COMMAND_BUF_SIZE)
{
//if (pending_command_queue.Count > 0)
//{
PanelCommandHandle[] pending_holding = pending_command_queue.ToArray();
PanelCommandHandle[] current_holding = current_commands.ToArray();
PanelCommandHandle[] merged_array = new PanelCommandHandle[pending_holding.Length + current_holding.Length];
Array.Copy(current_holding, merged_array, current_holding.Length);
Array.Copy(pending_holding, 0, merged_array, current_holding.Length, pending_holding.Length);
pending_command_queue = new Queue <PanelCommandHandle>(merged_array);
current_commands = new Queue <PanelCommandHandle>();
current_commands.Enqueue(pending_command_queue.Dequeue());
//}
}
}
rep_counter++;
//netStream.Flush();
BlockingConnectionReset();
}
};
process_command();
//Console.WriteLine("Panel queue size:" + cur_command_buf_size);
if (rep_counter == 0)
{
if (cur_command_buf_size < MAX_COMMAND_BUF_SIZE)
{
cur_command_buf_size += BUFF_SIZE_INCREASE_RATE;
}
}
else
{
total_errors++;
}
//Console.WriteLine(cur_command_buf_size);
foreach (PanelCommandHandle cmdhdl in current_commands)
{
cmdhdl.Handle.Set();
}
}
else
{
comm_busy = false;
}
}
}
private Task Refresh()
{
return(Task.Run(delegate()
{
UInt64 uid, uptime;
DateTime uid_read_timestamp;
PanelCommandHandle pch = connection.EnqueueCommand(new PanelCommand(PanelCommand.POLL_CARD_PRESENCE));
pch.Handle.WaitOne(); //uid will be waiting
uid_read_timestamp = DateTime.Now;
byte[] conversion_buffer = new byte[8];
Array.Copy(pch.Command.RxPacket, 1, conversion_buffer, 1, 7);
Array.Reverse(conversion_buffer);
uid = BitConverter.ToUInt64(conversion_buffer, 0);
if (uid != 0)
{
connection.EnqueueCommand(new PanelCommand(PanelCommand.CLEAR_CARD)).Handle.WaitOne();
}
pch = connection.EnqueueCommand(new PanelCommand(PanelCommand.GET_UPTIME));
pch.Handle.WaitOne(); //uid will be waiting
uptime = BitConverter.ToUInt64(pch.Command.RxPacket, 1);
PanelState stcpy = null;
lock (state_lock)
if (state != null)
{
stcpy = new PanelState(state);
}
else
{
state = new PanelState(new AccessControlCard(uid, AccessControlCard.MIFARE_CLASSIC, uid_read_timestamp), uptime, uid_read_timestamp);
}
if (stcpy != null)
{
AccessControlCard accessctlcd = stcpy.Card;
//if this is a different card then continue
if (accessctlcd.UID != uid)
{
accessctlcd = new AccessControlCard(uid, AccessControlCard.MIFARE_CLASSIC, uid_read_timestamp);
if (uid != 0)
{
if (presented != null)
{
presented(this, new PanelEventArgs(new PanelState(accessctlcd, uptime, uid_read_timestamp)));
}
}
}
lock (state_lock)
state = new PanelState(accessctlcd, uptime, uid_read_timestamp);
if (newstate != null)
{
newstate(this, new PanelEventArgs(new PanelState(accessctlcd, uptime, uid_read_timestamp)));
}
}
}));
}