ar708_trigger.cs

/************************************************************************************************
//
//   File:
//       ar708_trigger.cs
//
//       Copyright (c) MAX Technologies Inc. 1988-2015, All Rights Reserved.
//             CONFIDENTIAL AND PROPRIETARY INFORMATION WHICH IS THE 
//                         PROPERTY OF MAX TECHNOLOGIES INC. 
//
//    This example illustrates how to manage buffer thresholds with asynchronous events.
//    The demo will transmit and record the messages using asynchronous
//    events.
//
//    Hardware Requirements:
//       - MAXT FlexMulti-1553 or FlexMulti-629 with A708 option.
//       - Loopback between TX and RX channels if internal loopback is not used.
//
**************************************************************************************************/

#define LOOPBACK
//#define LOCAL

using System;
using static MAXT.MXFoundation.mxf;
using System.Runtime.InteropServices;
using System.Text;

namespace ar708_example
{
    class ar708_trigger
    {
        const UInt64 MAX_TX_RECORDS_TO_TRANSMIT = 8;

        static void Main(string[] args)
        {
            UInt32 rc;
            UInt64 server;
            UInt64 device = 0;
            var module = new UInt64[1];
            var rxChannel = new UInt64[1];
            var txChannel = new UInt64[1];
            UInt64 rxBuffer = 0;
            UInt64 txBuffer = 0;
            MXF_A708_DATAREC rec;
            UInt64 moduleCount = 0, channelCount = 0;
            uint txBufferSize, rxBufferSize;
            IntPtr rxHostBuffer = IntPtr.Zero;
            IntPtr txHostBuffer = IntPtr.Zero;
            UInt64 rxAcqStatus = 0;
            UInt64 msgCount = 0, byteCount = 0;
            UInt64 data, word;
            UInt64 rxBufferAllocatedSize, txBufferAllocatedSize;
            MXF_RXACQ_TRIG_COND_RDATA_DW_PARM condParam;
            UInt64 condList = 0;
            var offset = TimeZoneInfo.Local.GetUtcOffset(DateTime.UtcNow);
            var time = new DateTime(1970, 1, 1).AddTicks(offset.Ticks);
            UInt64 usec;
            UInt64 trigTime;

            // Connect to services and initialize environment
#if (LOCAL)
            rc = mxfServerConnect("0.0.0.0", "", "", Convert.ToUInt64(false), out server);
#else
            rc = mxfServerConnect("192.168.0.1", "admin", "admin", Convert.ToUInt64(false), out server);
#endif
            if (rc != MAXT_SUCCESS)
            {
                Console.Write("Failed to connect; rc=0x{0:x8}", rc);
                Console.WriteLine();
                Console.WriteLine("Press a key to terminate");
                Console.Read();
                return;
            }

            // Initialize the server
            Console.WriteLine();
            Console.WriteLine("Starting");

            rc = mxfSystemInit(server);

            // Get the device handle
            if (rc == MAXT_SUCCESS)
                rc = mxfSystemDeviceGet(server, 0, out device);

            //Get Module handle
            if (rc == MAXT_SUCCESS)
                rc = mxfDeviceModuleAllGet(device, MXF_MODULE_A708_EH, 1, out moduleCount, module);

            // If module not found, return an error
            if (rc == MAXT_SUCCESS && moduleCount == 0)
                rc = MAXT_ERROR_NOT_FOUND;

            // Activates the ARINC 708 module (because the MIL-STD-1553 is by default activated, except on FM1553-2)
            if (rc == MAXT_SUCCESS)
                rc = mxfAttributeUint64Set(module[0], KMXF_A708_MODULE_ACTIVE, Convert.ToUInt64(true));
            if (rc == MAXT_ERROR_NOT_SUPPORTED)
                rc = MAXT_SUCCESS;

            //Get handle of first ARINC 708 RX Channel
            if (rc == MAXT_SUCCESS)
                rc = mxfModuleChannelAllGet(module[0], MXF_CLASS_A708, MXF_SCLASS_RX_CHANNEL, 1, out channelCount, rxChannel);

            //Get handle of first A708 Tx Channel
            if (rc == MAXT_SUCCESS)
                rc = mxfModuleChannelAllGet(module[0], MXF_CLASS_A708, MXF_SCLASS_TX_CHANNEL, 1, out channelCount, txChannel);

            // Enable loopback
#if (LOOPBACK)
            if (rc == MAXT_SUCCESS)
                rc = mxfAttributeUint64Set(rxChannel[0], KMXF_A708_TX_RX_TEST_LB, VMXF_ENABLE);
#endif

            //Allocates 4KB buffer for tx data
            if (rc == MAXT_SUCCESS)
            {
                txBufferSize = 4 * 1024;
                //Allocates Tx Aperiodic static buffer for HIGH priority queue
                rc = mxfTxAperiodicBufferAlloc(txChannel[0], MXF_TXAPERIODIC_PRIORITY_HIGH, txBufferSize, out txBuffer, IntPtr.Zero);

                //Host buffer allocation
                if (rc == MAXT_SUCCESS)
                {
                    try
                    {
                        txHostBuffer = Marshal.AllocHGlobal((int)txBufferSize);
                    }
                    catch (OutOfMemoryException)
                    {
                        rc = MAXT_ERROR_MEM;
                    }
                }
            }

            rxBufferSize = 4 * 1024;
            //Allocate 4kb for Rx data
            if (rc == MAXT_SUCCESS)
            {
                //Allocates Rx acquisition static buffer
                rc = mxfRxAcqBufferAlloc(rxChannel[0], rxBufferSize, out rxBuffer, out rxBufferAllocatedSize);

                try
                {
                    rxHostBuffer = Marshal.AllocHGlobal((int)rxBufferSize);
                }
                catch (OutOfMemoryException)
                {
                    rc = MAXT_ERROR_MEM;
                }
            }

            //Sets timebase to 64bit usec
            if (rc == MAXT_SUCCESS)
                rc = mxfSystemTimeBaseSet(server, MXF_TIMEBASE_COMPUTER_USEC);

            //Configures Trigger and Creates the condition List
            if (rc == MAXT_SUCCESS)
                rc = mxfRxAcqTrigConditionListAlloc(server, out condList);

            //Condition will be triggered on the 5th record
            if (rc == MAXT_SUCCESS)
            {
                condParam.mask = 0x01FE0000;
                condParam.data = 0x00000000;
                condParam.offset = 0;
                condParam.options = MXF_RXACQ_TRIG_COND_RDATA_OPTIONS_NOTEQUAL;

                rc = mxfRxAcqTrigConditionAdd(condList, MXF_RXACQ_TRIG_COND_ID_RDATA_DW, ref condParam);
            }

            //Set the trigger with a pretrig count of 3 which allows some records to be read before the condition was triggered
            if (rc == MAXT_SUCCESS)
                rc = mxfRxAcqTrigSet(rxBuffer, condList, 3);

            // Set acquisition mode
            if (rc == MAXT_SUCCESS)
                rc = mxfRxAcqModeSet(rxBuffer, MXF_RXACQ_MODE_CIRCULAR);

            // Start acquisition
            if (rc == MAXT_SUCCESS)
                rc = mxfRxAcqStart(rxBuffer, MXF_RXACQ_FLAG_DEFAULT, 0, 0);

            if (rc == MAXT_SUCCESS)
                Console.WriteLine("Acquisition started");

            if (rc == MAXT_SUCCESS)
            {
                IntPtr recPtr = txHostBuffer;
                rec.data = new UInt16[128];

                //Prepares records to send for basic transmission/reception test
                for (data = 0; data < MAX_TX_RECORDS_TO_TRANSMIT; data++)
                {
                    rec.timeTag = data * 5000;
                    rec.control = 0;
                    rec.repeatCount = 1;
                    rec.manchesterBitErr = 0;
                    rec.dataSize = 200;  //200 bytes corresponds to 1600 bits (see ARINC 708 specification)
                    for (word = 0; word < rec.dataSize / 2; word++)
                    {
                        switch (word)
                        {
                            case 0:
                                rec.data[word] = 055; // Label
                                break;
                            case 1:
                                rec.data[word] = (ushort)((data != 5) ? 0x0000 : 0x0004); // Cooling Fault detected will fire trigger
                                break;
                            case 2:
                            case 3:
                                rec.data[word] = 0x0000;
                                break;
                            default:
                                rec.data[word] = (UInt16)(0x0101 * data);
                                break;
                        }
                    }
                    Marshal.StructureToPtr(rec, recPtr, false);
                    rc = mxfA708NextDataRecordPtrGet(recPtr, out recPtr);
                }
            }

            if (rc == MAXT_SUCCESS)
            {
                Console.WriteLine();
                Console.WriteLine("Transmitting...");

                rc = mxfA708TxAperiodicWrite(txBuffer, MXF_TXAPERIODIC_FLAG_USE_RECORD_RELATIVE_TIME, 0, MAX_TX_RECORDS_TO_TRANSMIT, txHostBuffer);
            }

            if (rc == MAXT_SUCCESS)
                mxfSleep(1000);

            //Check that trigger occurred
            if (rc == MAXT_SUCCESS)
                rc = mxfRxAcqBufferStatusGet(rxBuffer, out rxAcqStatus, IntPtr.Zero, IntPtr.Zero, IntPtr.Zero);

            if (rc == MAXT_SUCCESS && (rxAcqStatus & MXF_RXACQ_STATUS_TRIG_OCCURRED) > 0)
            {
                rc = mxfRxAcqTrigTimeGet(rxBuffer, out trigTime);
                if (rc == MAXT_SUCCESS)
                {
                    time = time.AddMilliseconds(trigTime / 1000);
                    usec = trigTime % 1000;

                    Console.WriteLine();
                    Console.WriteLine("Event triggered at {0}:{1:000}", time.ToString("yyyy-MM-dd HH:mm:ss:ff"), usec);
                }
            }
            else if (rc == MAXT_SUCCESS)
                Console.WriteLine("Trigger not fired.");

            if (rc == MAXT_SUCCESS)
            {
                Console.WriteLine();
                Console.WriteLine("Receiving...");
                rc = mxfA708RxAcqRead(rxBuffer, 0, rxBufferSize, out rxAcqStatus, out msgCount, out byteCount, txHostBuffer);
            }

            if (rc == MAXT_SUCCESS)
                Console.WriteLine("Strings received: {0}", msgCount);

            if (rc == MAXT_SUCCESS)
                DisplayDataArray(msgCount, rxHostBuffer);

            // Stop acquisition
            if (rc == MAXT_SUCCESS)
                rc = mxfRxAcqStop(rxBuffer);

            //Free trigger condition list
            if (rc == MAXT_SUCCESS)
                rc = mxfRxAcqTrigConditionListFree(condList);

            // Catch any previous failing function
            if (rc != MAXT_SUCCESS)
            {
                StringBuilder buffer = new StringBuilder(256);

                if (mxfSystemErrorStringGet(server, rc, 256, buffer) != MAXT_SUCCESS)
                    buffer.Append(string.Format("ERROR # 0x{0:x8}", rc));

                Console.WriteLine(buffer);
            }

            //Frees all buffers
            if (rxBuffer != 0)
                mxfRxAcqBufferFree(rxBuffer);
            if (txBuffer != 0)
                mxfTxAperiodicBufferFree(txBuffer);

            if (txHostBuffer != IntPtr.Zero)
                Marshal.FreeHGlobal(txHostBuffer);
            if (rxHostBuffer != IntPtr.Zero)
                Marshal.FreeHGlobal(rxHostBuffer);

            // Terminate
            mxfSystemTerminate(server);
            mxfServerDisconnect(server);

            Console.WriteLine();
            Console.WriteLine("Press enter to terminate");
            Console.Read();

            return;
        }


        /********************************************************************************************************************/
        //DisplayDataArray
        /********************************************************************************************************************/
        private static void DisplayDataArray(UInt64 recNum, IntPtr rxHostBuffer)
        {
            UInt64 iRec, iData;
            MXF_A708_DATAREC rec;
            IntPtr p = rxHostBuffer;

            Console.WriteLine();
            for (iRec = 0; iRec < recNum; iRec++)
            {
                rec = (MXF_A708_DATAREC)Marshal.PtrToStructure(p, typeof(MXF_A708_DATAREC));
                Console.WriteLine("{0}:  Timetag: {1}  Control: {2:x2}  Size: {3}", iRec, rec.timeTag, rec.control, rec.dataSize);
                Console.Write("Data: ");
                for (iData = 0; iData < rec.dataSize / 2; iData++)
                {
                    Console.WriteLine("{0:x2}", rec.data[iData]);
                }
                Console.WriteLine();
                mxfA708NextDataRecordPtrGet(p, out p);
            }
        }
    }
}