public static void Configure(int BufferSize, Channels ChannelEnabledMask, int SampleSoc, int SampleAverage, int SampleRate) { if (Status != InitMode.Initialized) { throw new Exception("Pru1Aio must be initialized prior to Configuration."); } lock (Locker) { unsafe { AsynchCall = new AsynchronousCallBack(ProcessBuffer); PruMemory->Control.BufferCount = 0; PruMemory->Control.BufferSize = (byte)BufferSize; // 40; PruMemory->Control.ChannelEnabledMask = (byte)ChannelEnabledMask; // 0x7F; PruMemory->Control.SampleSoc = (byte)SampleSoc; // 15; PruMemory->Control.SampleAverage = (byte)SampleAverage; // 16; PruMemory->Control.SampleRate = (uint)SampleRate; // 1000; IBuffer = Pru1Aio.pru_rta_init_capture_buffer(PruMemory); CaptureBuffer = (Pru1AioReading *)IBuffer.ToPointer(); } _IsCapturing = false; _Status = InitMode.Configured; _TotalRecords = 0; CurrentBufferIndex = 0; } }
private static unsafe void ProcessBuffer(uint BufferCount, ushort BufferSize, Pru1AioReading *CapturedBuffer, CallState *CallState, PruSharedMemory *PruMemory) { Signals++; LastBufferCount = (int)PruMemory->Control.BufferCount; Reading mread = new Reading(); for (int i = 0; i < 8; i++) { mread.Readings[i] = CallState->BufferMean.Readings[i]; } mread.Buffer = CallState->BufferMean.Buffer; mread.DigitalIn = CallState->BufferMean.DigitalIn; _MeanReading = mread; int LastGoodBuffer = Signals; if (Signals < LastBufferCount) { do { DropBuffer(Signals, mread, LastGoodBuffer, (int)BufferSize); Signals++; } while (Signals < LastBufferCount); } Pru1Aio.pru_rta_set_digital_out(PruMemory, 0xF, _DigitalOutput); if (IsCapturing && Status == InitMode.Running) { for (int record = 0; record < BufferSize; record++) { if (CurrentBufferIndex >= _Buffer.Length) { if (Mode == BufferMode.Ring) { CurrentBufferIndex = 0; MessageInvoker(MessageType.Ring, mread, CurrentBufferIndex, (int)BufferSize); } else { MessageInvoker(MessageType.Overflow, mread, CurrentBufferIndex, (int)BufferSize); _IsCapturing = false; break; } } for (int channel = 0; channel < PruMemory->Control.ChannelCount; channel++) { /* * fixed (Pru1AioReading* readings = _Buffer) * { * readings[CurrentBufferIndex].Readings[channel] = CapturedBuffer[record].Readings[channel]; * } */ _Buffer[CurrentBufferIndex].Readings[channel] = CapturedBuffer[record].Readings[channel]; } _Buffer[CurrentBufferIndex].DigitalIn = CapturedBuffer[record].DigitalIn; _Buffer[CurrentBufferIndex].Buffer = CapturedBuffer[record].Buffer; CurrentBufferIndex++; _TotalRecords++; } } MessageInvoker(MessageType.Notification, mread, CurrentBufferIndex, (int)BufferSize); if (RunLimit) { _Calls--; if (_Calls == 0) { Pru1Aio.pru_rta_stop_capture(PruMemory); _Status = InitMode.Initialized; MessageInvoker(MessageType.Stop, new Reading(), 0, 0); } if (CurrentBufferIndex >= _Buffer.Length && Pru1Aio.Mode == BufferMode.Fill) { Pru1Aio.pru_rta_stop_capture(PruMemory); _Status = InitMode.Initialized; MessageInvoker(MessageType.Stop, new Reading(), 0, 0); } } return; }
// private unsafe static extern void pru_rta_test_callback(PruSharedMemory* PruMemory, [MarshalAs(UnmanagedType.LPArray)] Reading[] Buffer, CallState* CallState, AsynchronousCallBack CallBac); private unsafe static extern void pru_rta_test_callback(PruSharedMemory *PruMemory, Pru1AioReading *Buffer, CallState *CallState, AsynchronousCallBack CallBac);