ar708_sampling.cs

/*****************************************************************************
//
//     File:
//        ar708_sampling.cs
//
//       Copyright (c) MAX Technologies Inc. 1988-2019, All Rights Reserved.
//             CONFIDENTIAL AND PROPRIETARY INFORMATION WHICH IS THE 
//                         PROPERTY OF MAX TECHNOLOGIES INC. 
//
//      This example demonstrates the basic usage of ARINC 708 channel class
//      for transmission and reception with sampling.
//
//       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_sampling
    {
        private const int MAX_TX_RECORDS_TO_TRANSMIT = 10;
        private const int BUFFER_SIZE = 1024 * 1024;

        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;
            var txBuffer = new UInt64[1];
            var rec = new MXF_A708_DATAREC();
            UInt64 moduleCount = 0;
            UInt64 channelCount = 0;
            IntPtr txHostBuffer = IntPtr.Zero;
            IntPtr hostBuffer = IntPtr.Zero;
            UInt64 schedule = 0;
            UInt64 i, msgsCount, bytesCount;
            UInt64 msg = 0;
            UInt64 data, word;

#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 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); //Hey! lol

            //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
            //HERE
            //Allocates 4KB buffer for tx data
            if (rc == MAXT_SUCCESS)
            {
                //Host buffer allocation
                if (rc == MAXT_SUCCESS)
                {
                    try
                    {
                        txHostBuffer = Marshal.AllocHGlobal((int)BUFFER_SIZE);
                    }
                    catch (OutOfMemoryException)
                    {
                        rc = MAXT_ERROR_MEM;
                    }
                }
            }

            //Allocate 4kb for Rx data
            if (rc == MAXT_SUCCESS)
            {
                try
                {
                    hostBuffer = Marshal.AllocHGlobal((int)BUFFER_SIZE);
                }
                catch (OutOfMemoryException)
                {
                    rc = MAXT_ERROR_MEM;
                }
            }

            //Sets timebase to RTC usec
            if (rc == MAXT_SUCCESS)
                rc = mxfSystemTimeBaseSet(server, MXF_TIMEBASE_DEVICE_USEC);

            //Allocate RX sampling buffer
            if (rc == MAXT_SUCCESS)
                rc = mxfRxSamplingBufferAlloc(rxChannel[0], BUFFER_SIZE, out rxBuffer, IntPtr.Zero);

            //Set sampling kill time to 5 seconds
            if (rc == MAXT_SUCCESS)
                rc = mxfRxSamplingKilltimeSet(rxBuffer, 5000000);

            //Start Sampling
            if (rc == MAXT_SUCCESS)
            {
                rc = mxfRxSamplingStart(rxBuffer);

                if (rc == MAXT_SUCCESS)
                {
                    Console.WriteLine();
                    Console.WriteLine("Sampling started");
                }
            }

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

            //Create Periodic Scheduler
            if (rc == MAXT_SUCCESS)
                rc = mxfTxPeriodicScheduleNew(txChannel[0], 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, txBuffer);

            //Sets records for the buffers
            if (rc == MAXT_SUCCESS)
            {
                IntPtr recPtr = txHostBuffer; 
                rec.data = new UInt16[128];

                //Prepares a buffer with a record that will be read by the sampling
                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; //200 bytes per the A708 specification

                    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);
                }
            }

            //Transmits strings on relative record time
            if (rc == MAXT_SUCCESS)
                rc = mxfA708TxPeriodicUpdateMsgWrite(txBuffer[0], MAX_TX_RECORDS_TO_TRANSMIT, txHostBuffer);

            //Run the schedule
            if (rc == MAXT_SUCCESS)
                rc = mxfTxPeriodicScheduleRun(schedule);

            //Read and display records for 5 seconds
            for (i = 0; i < 10 && rc == MAXT_SUCCESS; i++)
            {
                rc = mxfA708RxSamplingRead(rxBuffer, MXF_RXSAMPLING_FLAG_DEFAULT, 0, BUFFER_SIZE, out msgsCount, out bytesCount, hostBuffer);
                if (rc == MAXT_SUCCESS)
                {
                    Console.WriteLine();
                    Console.WriteLine("Read {0} messages.", msgsCount);
                    DisplaySampDataArray(msgsCount, hostBuffer);
                }
                if (rc != 0)
                {
                    Console.WriteLine();
                    Console.WriteLine("Sampling read failed.");
                }
                else
                    mxfSleep(500);
            }

            //Stops Transmission
            if (rc == MAXT_SUCCESS)
                rc = mxfTxPeriodicScheduleFree(schedule);

            //Stop Sampling
            if (rc == MAXT_SUCCESS)
            {
                rc = mxfRxSamplingStop(rxBuffer);
                if (rc == MAXT_SUCCESS)
                {
                    Console.WriteLine();
                    Console.WriteLine("Sampling stopped.");
                }
            }

            //Free device and host buffers
            if (rxBuffer != 0)
                mxfRxAcqBufferFree(rxBuffer);
            if (txBuffer[0] != 0)
                mxfTxAperiodicBufferFree(txBuffer[0]);

            //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;
        }

        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}  {1}  {2:x8}  {3}", iRec, rec.timeTag, rec.control, rec.dataSize);
                for (iData = 0; iData < rec.dataSize / 2; iData++)
                {
                    Console.WriteLine("{0:x8}", rec.data[iData]);
                }
                Console.WriteLine();
                mxfA708NextDataRecordPtrGet(p, out p);
            }
        }

        private static void DisplaySampDataArray(UInt64 recNum, IntPtr rxHostBuffer)
        {
            UInt64 iRec, iData;
            MXF_A708_SAMPREC rec;
            IntPtr p = rxHostBuffer;

            Console.WriteLine();
            for (iRec = 0; iRec < recNum; iRec++)
            {
                rec = (MXF_A708_SAMPREC)Marshal.PtrToStructure(p, typeof(MXF_A708_SAMPREC));
                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); 
            }
        }
    }
}