ar708_periodic.cs

/******************************************************************************
//
//    File:
//       ar708_periodic.cs
//
//       Copyright (c) MAX Technologies Inc. 1988-2019, All Rights Reserved.
//             CONFIDENTIAL AND PROPRIETARY INFORMATION WHICH IS THE 
//                         PROPERTY OF MAX TECHNOLOGIES INC. 
//
//    This demo shows how to set a basic periodic transmission 
//    based on ARINC 708 protocol.
//
//       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_periodic
    {
        private const int MAX_TX_RECORDS_TO_TRANSMIT = 4;
        private const int BUFFER_SIZE = 4096;

        static void Main(string[] args)
        { 
            UInt32 rc;
            UInt64 server = 0;
            UInt64 device = 0;
            var module = new UInt64[1];
            var rxChannel = new UInt64[1];
            var txChannel =  new UInt64[1];
            UInt64 rxBuffer = 0;
            UInt64 txBuffer = 0;//= new UInt64[1];
            IntPtr rec = IntPtr.Zero;
            UInt64 dev, mod, port;
            UInt64 moduleCount = 0;
            UInt64 channelCount = 0;

#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);

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

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

            //Get the physical port
            if (rc == MAXT_SUCCESS)
            {
                rc = mxfChannelLocationGet(rxChannel[0], out dev, out mod, out port);
                if (rc == MAXT_SUCCESS)
                {
                    Console.WriteLine();
                    Console.WriteLine("Acquisition Channel (RX) location = {0}.{1}.{2}", dev, mod, port);
                }
            }

            if (rc == MAXT_SUCCESS)
            {
                rc = mxfChannelLocationGet(txChannel[0], out dev, out mod, out port);
                if (rc == MAXT_SUCCESS)
                {
                    Console.WriteLine();
                    Console.WriteLine("Transmitter Channel (TX) location = {0}.{1}.{2}", dev, mod, port);
                }
            }

            //Allocate RX Acquisition Buffer
            if (rc == MAXT_SUCCESS)
                rc = mxfRxAcqBufferAlloc(rxChannel[0], BUFFER_SIZE, out rxBuffer, IntPtr.Zero);

            //Allocate TX Periodic Update buffer
            if (rc == MAXT_SUCCESS)
                rc = mxfTxPeriodicUpdateMsgBufferAlloc(txChannel[0], 0, BUFFER_SIZE, out txBuffer, IntPtr.Zero);

            //ALlocate host buffer
            if (rc == MAXT_SUCCESS)
            {
                try
                {
                    rec = Marshal.AllocHGlobal(BUFFER_SIZE);
                }
                catch (OutOfMemoryException)
                {
                    rc = MAXT_ERROR_MEM;
                }
            }

            //Start the acquisition process
            if (rc == MAXT_SUCCESS)
                rc = mxfRxAcqModeSet(rxBuffer, MXF_RXACQ_MODE_LINEAR);

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

            //Start data transmission
            if (rc == MAXT_SUCCESS)
            {
                rc = PeriodicScheduling(txChannel[0], txBuffer, rec);
                if (rc == MAXT_SUCCESS)
                    rc = ReadAcquisitionData(rxBuffer, rec);
            }

            //Stops Acquisition
            if (rc == MAXT_SUCCESS)
                rc = mxfRxAcqStop(rxBuffer);

            if (rc == MAXT_SUCCESS)
            {
                rc = mxfRxAcqClear(rxBuffer);
                if (rc == MAXT_SUCCESS)
                    Console.WriteLine("Acquisition Stopped");
            }

            //Free device and host buffers
            if (rxBuffer != 0)
                mxfRxAcqBufferFree(rxBuffer);
            if (txBuffer != 0)
                mxfTxAperiodicBufferFree(txBuffer);
            if (rec != IntPtr.Zero)
                Marshal.FreeHGlobal(rec);

            //Get error
            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);
            }

            Console.WriteLine();
            Console.WriteLine("Terminating...");

            mxfSystemTerminate(server);
            mxfServerDisconnect(server);

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

            return;
        }
        /***********************************************************************/
        //ReadAcquisitionData
        /***********************************************************************/
        private static UInt32 ReadAcquisitionData(UInt64 rxBuffer, IntPtr rxHostBuffer)
        {
            UInt64 status, msgsCount, bytesCount;
            UInt32 rc = 0;

            //Read and display records
            Console.WriteLine();
            Console.WriteLine("Receiving!");
            rc = mxfA708RxAcqRead(rxBuffer, 0, BUFFER_SIZE, out status, out msgsCount, out bytesCount, rxHostBuffer);

            if (rc == MAXT_SUCCESS)
            {
                Console.WriteLine();
                Console.WriteLine("String received count: {0}", msgsCount);
            }

            //Display Strings
            if (rc == MAXT_SUCCESS)
                DisplayDataArray(msgsCount, rxHostBuffer);

            if (rc != MAXT_SUCCESS)
            {
                Console.WriteLine();
                Console.WriteLine("Acquisition read failed.");
            }

            return rc;
        }

        /***********************************************************************/
        //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.Write("{0:x2}", rec.data[iData]);
                }
                Console.WriteLine();
                mxfA708NextDataRecordPtrGet(p, out p);
            }
        }

        /***********************************************************************/
        //PeriodicScheduling
        /***********************************************************************/
        private static UInt32 PeriodicScheduling(UInt64 txChannel, UInt64 txBuffer, IntPtr recA708)
        {
            UInt64 schedule;
            UInt64 msg = 0;
            MXF_A708_DATAREC rec = new MXF_A708_DATAREC();
            UInt32 rc;
            UInt64 data, word;
            rec.data = new UInt16[128];
            var txBufferArray = new UInt64[] { txBuffer };
            IntPtr recPtr = recA708;

            //Create the periodic scheduler
            rc = mxfTxPeriodicScheduleNew(txChannel, out schedule);

            //Set scheduling values: rate = 5ms, Phase = 0us
            if (rc == MAXT_SUCCESS)
                rc = mxfTxPeriodicScheduleMsgAdd(schedule, 5000, 0, out msg);

            //Define the number of buffers for the list and link to it
            if (rc == MAXT_SUCCESS)
                rc = mxfTxPeriodicScheduleBufferListAdd(msg, 1, 0, txBufferArray);

            //Set records for the buffers
            if (rc == MAXT_SUCCESS)
            {
                for (data = 0; data < MAX_TX_RECORDS_TO_TRANSMIT; data++)
                {
                    rec.timeTag = 0;
                    rec.control = 0;
                    rec.repeatCount = 1;
                    rec.manchesterBitErr = 0;
                    rec.dataSize = 200;
                    for (word = 0; word < rec.dataSize / 2; word++)
                    {
                        switch (word)
                        {
                            case 0:
                                rec.data[word] = 055; //Label
                                break;
                            case 1:
                            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);
                }
            }

            //DisplayDataArray(MAX_TX_RECORDS_TO_TRANSMIT, recPtr);
            if (rc == MAXT_SUCCESS)
                rc = mxfA708TxPeriodicUpdateMsgWrite(txBufferArray[0], MAX_TX_RECORDS_TO_TRANSMIT, recA708);

            //Run the scheduler and update records
            if (rc == MAXT_SUCCESS)
            {
                Console.WriteLine();
                Console.WriteLine("Running periodic transmission...");

                //Run schedule
                rc = mxfTxPeriodicScheduleRun(schedule);
            }
            if (rc == MAXT_SUCCESS)
            {
                mxfSleep(1000);

                rc = mxfTxPeriodicScheduleFree(schedule);
            }

            if (rc == MAXT_SUCCESS)
            {
                Console.WriteLine();
                Console.WriteLine("Transmission stopped.");
            }

            return rc;
        }
    }
}