Exemplo n.º 1
0
 public void releaseDevice()
 {
     if (cfgPara.hDevice != (IntPtr)(-1))
     {
         NET2991A.NET2991_AI_StopTask(cfgPara.hDevice);
         NET2991A.NET2991_DEV_Release(cfgPara.hDevice);
         cfgPara.hDevice = (IntPtr)(-1);
     }
 }
Exemplo n.º 2
0
        public bool start()
        {
            Int32 dwChanCnt = 0;
            Int32 nIndex    = 0;

            for (nIndex = 0; nIndex < NET2991A.NET2991A_MAX_CHANNELS; nIndex++)
            {
                if (cfgPara.AAIParam.CHParam[nIndex].bChannelEn == 1)
                {
                    dwChanCnt++;
                }
            }
            // 实际总共需要读取的数据数
            cfgPara.dwRealReadLen = 2 * dwChanCnt * cfgPara.nReadLength;

            // 初始化
            cfgPara.nSampStatus    = UserDef.CMD_UNCPT;
            cfgPara.dwReadDataSize = 0;
            cfgPara.bAIStatus      = 0;

            // 读取数据的长度
            cfgPara.dwFrameLen = UserDef.LMT_FRMCNT;

            // 启动采样
            if (NET2991A.NET2991_AI_StartTask(cfgPara.hDevice) == 0)
            {
                Console.WriteLine("2911A启动任务失败!");
                if (cfgPara.hDevice != (IntPtr)(-1))
                {
                    NET2991A.NET2991_AI_StopTask(cfgPara.hDevice);
                    NET2991A.NET2991_DEV_Release(cfgPara.hDevice);
                    cfgPara.hDevice = (IntPtr)(-1);
                }
                return(false);
            }
            needStop = false;
            Thread tDataRead = new Thread(ReadDataFun);

            tDataRead.Start();
            return(true);
        }
Exemplo n.º 3
0
        public bool InitDevice(string strIP, string strDevPort, string strLocalPort, MsgUpdateDelegate std)
        {
            Int32 nIndex = 0;

            Int32 ipaddr = inet_addr(strIP);

            cfgPara.AAIParam.nDeviceIP              = (UInt32)(System.Net.IPAddress.NetworkToHostOrder(ipaddr));
            cfgPara.AAIParam.nDevicePort            = Convert.ToUInt16(strDevPort);
            cfgPara.AAIParam.nLocalPort             = Convert.ToUInt16(strLocalPort);
            cfgPara.AAIParam.CHParam[16].bChannelEn = 0;
            for (nIndex = 0; nIndex < 16; nIndex++)
            {
                cfgPara.AAIParam.CHParam[nIndex].bChannelEn   = 1;
                cfgPara.AAIParam.CHParam[nIndex].nSampleRange = NET2991A.NET2991A_AI_SAMPRANGE_N5_P5V;
                cfgPara.AAIParam.CHParam[nIndex].nRefGround   = NET2991A.NET2991A_AI_REFGND_RSE;
            }

            cfgPara.AAIParam.fSampleRate   = UserDef.Frequency; //;
            cfgPara.AAIParam.nSampleMode   = NET2991A.NET2991A_AI_SAMPMODE_CONTINUOUS;
            cfgPara.AAIParam.nSampsPerChan = 102400;
            cfgPara.AAIParam.nClockSource  = NET2991A.NET2991A_AI_CLOCKSRC_LOCAL;
            cfgPara.AAIParam.nReserved0    = 0;

            cfgPara.AAIParam.nTriggerSource  = NET2991A.NET2991A_AI_TRIGSRC_NONE;
            cfgPara.AAIParam.nTriggerDir     = NET2991A.NET2991A_AI_TRIGDIR_FALLING;
            cfgPara.AAIParam.fTriggerLevel   = 10;
            cfgPara.AAIParam.nDelaySamps     = 0;
            cfgPara.AAIParam.nReTriggerCount = 1;

            cfgPara.AAIParam.bMasterEn  = 0;
            cfgPara.AAIParam.nReserved1 = 0;
            cfgPara.AAIParam.nReserved2 = 0;

            cfgPara.nReadOffset = 0;
            cfgPara.nReadLength = 16 * UserDef.Frequency;
            cfgPara.hDevice     = (IntPtr)(-1);

            UInt16 nDataTranDir = NET2991A.NET2991A_AI_TRANDIR_CLIENT;

            NET2991A.NET2991_DEV_SetSendSpeed(3);
            if (cfgPara.hDevice != (IntPtr)(-1))
            {
                NET2991A.NET2991_AI_StopTask(cfgPara.hDevice);
                NET2991A.NET2991_DEV_Release(cfgPara.hDevice);
            }
            // 创建设备
            cfgPara.hDevice = NET2991A.NET2991_DEV_Create(cfgPara.AAIParam.nDeviceIP,
                                                          cfgPara.AAIParam.nDevicePort,
                                                          cfgPara.AAIParam.nLocalPort,
                                                          nDataTranDir, 0.2, 0.2, 2);
            bool isSuccess = true;

            mstd = std;
            if (cfgPara.hDevice == (IntPtr)(-1))
            {
                mstd("2991A创建设备失败!");
                isSuccess = false;
            }
            // 判断是否连接
            else if (NET2991A.NET2991_DEV_IsLink(cfgPara.hDevice) == 0)
            {
                mstd("2991A设备没有连接!");
                isSuccess = false;
            }

            // 初始化设备
            else if (NET2991A.NET2991_AI_InitTask(cfgPara.hDevice, ref cfgPara.AAIParam, (IntPtr)(-1)) == 0)
            {
                mstd("2991A初始化设备失败!");
                isSuccess = false;
            } // 不保存文件
            else if (NET2991A.NET2991_AI_IsSaveFile(cfgPara.hDevice, 0) == 0)
            {
                mstd("2911A设置文件保存失败!");
                isSuccess = false;
            }
            // 清除缓存
            else if (NET2991A.NET2991_AI_ClearBuffer(cfgPara.hDevice) == 0)
            {
                mstd("2991A清除缓存失败!");
            }



            if (!isSuccess && cfgPara.hDevice != (IntPtr)(-1))
            {
                NET2991A.NET2991_AI_StopTask(cfgPara.hDevice);
                NET2991A.NET2991_DEV_Release(cfgPara.hDevice);
                cfgPara.hDevice = (IntPtr)(-1);
                return(false);
            }

            return(true);
        }
Exemplo n.º 4
0
        static void ReadDataFun()
        {
            UInt16[] nAIArray   = new UInt16[2048];
            UInt32   dwReadChan = 0;
            //UInt16[] threaholdMarker = new UInt16[16]; // mark is need to save
            UInt64 bufferCount         = 0;
            UInt32 indexPerChannel     = 0;
            UInt32 dwReadSampsPerChan  = 0;
            UInt32 dwSampsPerChanRead  = 0;
            UInt32 dwAvailSampsPerChan = 0;
            double fTimeOut            = -1.0;
            Int32  nIndex    = 0;
            Single fVoltData = 0.0F;

            Int16 tmp = 0;

            switch (cfgPara.AAIParam.CHParam[nIndex].nSampleRange)
            {
            case NET2991A.NET2991A_AI_SAMPRANGE_N10_P10V:
                fPerLsb = 20000.0F / 65536;
                break;

            case NET2991A.NET2991A_AI_SAMPRANGE_N5_P5V:
                fPerLsb = 10000.0F / 65536;
                break;

            case NET2991A.NET2991A_AI_SAMPRANGE_N2D5_P2D5V:
                fPerLsb = 5000.0F / 65536;
                break;

            case NET2991A.NET2991A_AI_SAMPRANGE_N1D25_P1D25V:
                fPerLsb = 2500.0F / 65536;
                break;

            default:
                break;
            }
            // 根据用户设置的读取长度设置每通道数据的读取长度
            UInt32 nChanSize = (uint)(cfgPara.nReadLength * 2);

            // 读数据


            while (true)
            {
                try
                {
                    if (needStop)
                    {
                        break;
                    }
                    dwReadSampsPerChan = 1024;

                    //long t1 = System.DateTime.Now.Ticks;
                    // 连续采集模式下数据排列顺序为16路DI第一个采样点、CH0第一个采样点、CH1第一个采样点、CH2第一采样点.....CH15第一个采样点、16路DI第二个采样点...
                    if (NET2991A.NET2991_AI_ReadBinary(cfgPara.hDevice, ref dwReadChan, nAIArray, dwReadSampsPerChan, ref dwSampsPerChanRead, ref dwAvailSampsPerChan, fTimeOut) == 0)
                    {
                        if (needStop)
                        {
                            break;
                        }
                        continue;
                    }

                    /*long t2 = System.DateTime.Now.Ticks;
                     * Console.WriteLine("wwwwwwwwww  " + (t2 - start) / 10000000);
                     * start = t2;*/
                    if (needStop)
                    {
                        break;
                    }
                    //16通道,采集够1秒数据在处理
                    //先将数据放进缓存,这里确认每次读回来的数据远小于1秒数据,所以不考虑溢出
                    for (UInt16 n = 0; n < 1000; n++)
                    {
                        if (((n + 1) << 4) > dwSampsPerChanRead)
                        {
                            break;
                        }
                        int bn = n << 4;

                        for (int i = 0; i < 16; i++)
                        {
                            buffer[currentFrameCount % 2, i, indexPerChannel] = nAIArray[bn + i];
                        }
                        indexPerChannel++;
                    }

                    bufferCount += dwSampsPerChanRead;

                    if (bufferCount < (ulong)UserDef.Frequency * 16 + 1 - dwSampsPerChanRead) // 500kps*16
                    {                                                                         //如果还不够一帧数据
                        continue;
                    }
                    else
                    {
                        bufferCount     = 0;
                        indexPerChannel = 0;
                        currentFrameCount++;
                    }
                }
                catch (Exception ex)
                {
                    Console.WriteLine(ex.Message);
                }
            }
            if (cfgPara.hDevice != (IntPtr)(-1))
            {
                Thread.Sleep(500);
                NET2991A.NET2991_AI_StopTask(cfgPara.hDevice);
                NET2991A.NET2991_DEV_Release(cfgPara.hDevice);
                cfgPara.hDevice = (IntPtr)(-1);
            }
        }
Exemplo n.º 5
0
 public NET2991A()
 {
     cfgPara.AAIParam.szDevName = new SByte[32];
     cfgPara.AAIParam.CHParam   = new NET2991A.NET2991A_CH_PARAM[17];
     NET2991A.NET2991_DEV_Init(4096);
 }