Zebra RFID Reader Integration Middleware | FX9600 & LLRP SDK

using System;
using System.Threading.Channels;
using System.Threading.Tasks;
using Symbol.RFID3;

namespace RfidSoftwares.Zebra.Gateway
{
    public class ZebraFx9600PortalController
    {
        private readonly RFIDReader _reader = new("192.168.1.100", 5084, 0);
        private readonly Channel<TagData> _ringBuffer = Channel.CreateUnbounded<TagData>();

        public void InitializeZebraPortal()
        {
            _reader.Connect();
            
            // Set 31.5 dBm transmit power for high-speed dock portals
            var antConfig = _reader.Config.Antennas;
            antConfig[1].TransmitPowerIndex = 300; // Ant 1 Entry
            antConfig[2].TransmitPowerIndex = 300; // Ant 2 Exit
            
            // Non-blocking asynchronous tag read buffer
            _reader.Actions.TagAccess.OperationSequence.PerformSequence();
            _reader.Events.ReadNotify += (sender, eventArgs) => {
                TagData[] tags = _reader.Events.GetReadTags(100);
                foreach (var tag in tags) _ringBuffer.Writer.TryWrite(tag);
            };
        }

        // Sub-15ms Inbound/Outbound Direction Vectoring & GPIO Stack Light Trigger
        public async Task ProcessTransitVectorAsync(TagData tag, bool isValidAsn)
        {
            if (isValidAsn) {
                // Actuate 24V Green Stack Light (GPO Port 1)
                _reader.Config.GPO[1].PortState = GPOs.GPO_PORT_STATE.TRUE;
                await Task.Delay(1500);
                _reader.Config.GPO[1].PortState = GPOs.GPO_PORT_STATE.FALSE;
            } else {
                // Trigger Red Strobe Alarm (GPO Port 2)
                _reader.Config.GPO[2].PortState = GPOs.GPO_PORT_STATE.TRUE;
            }
        }
    }
}