/// <summary>
/// 读取数据
/// </summary>
/// <param name="channelData1">通道1数据</param>
/// <param name="channelData2">通道2数据</param>
public void ReadDataBlock(out double[] channelData1, out double[] channelData2)
{
lock (lockObject)
{
int retryCount = 0;
channelData1 = new double[0];
channelData2 = new double[0];
//开始AD采集
MyDLLimport.USBCtrlTransSimple((Int32)0x33);
//等待采集完成
while (MyDLLimport.USBCtrlTransSimple((Int32)0x50) != 33)
{
Thread.Sleep(10);
retryCount++;
if (retryCount > 1000)
{
throw new TimeoutException("采集数据超时");
}
}
//获取数据
int res = MyDLLimport.AiReadBulkData((int)sampleCount * 2, 1, 2000, g_pBuffer);
if (res == 0)
{
//等待事件
var g_CurrentEventID = MyDLLimport.EventCheck(2000);
if (g_CurrentEventID == 1365 || g_CurrentEventID == -1)
{
return;
}
channelData1 = new double[sampleCount - invalidDataCount];
channelData2 = new double[sampleCount - invalidDataCount];
unsafe
{
byte *pData = (byte *)g_pBuffer;
for (uint i = invalidDataCount; i < sampleCount; i++)
{
channelData1[i - invalidDataCount] = (*(pData + i * 2) - currentCHAZero) * currentCHAScale;
channelData2[i - invalidDataCount] = (*(pData + i * 2 + 1) - currentCHBZero) * currentCHBScale;
}
}
}
}
}
/// <summary>
/// 开始记录数据
/// </summary>
public void StartSample()
{
lock (lockObject)
{
int retryCount = 0;
//开始AD采集
MyDLLimport.USBCtrlTransSimple((Int32)0x33);
//等待采集完成
while (MyDLLimport.USBCtrlTransSimple((Int32)0x50) != 33)
{
Thread.Sleep(10);
retryCount++;
if (retryCount > 1000)
{
throw new TimeoutException("采集数据超时");
}
}
}
}
/// <summary>
/// 开始连续采集
/// </summary>
public void StartSerialSample(int serialSampleTime)
{
new Thread(() =>
{
lock (lockObject)
{
_shouldStop = false;
SampleTime = serialSampleTime;
IsSerialSampling = true;
while (!_shouldStop)
{
//开始AD采集
MyDLLimport.USBCtrlTransSimple((Int32)0x33);
int eventTimeout = 2000;
double[] channelData1 = new double[sampleCount];
double[] channelData2 = new double[sampleCount];
uint eventNumber = CaculateEvtNum((int)sampleCount * 2);
//单次包的数据长度
uint packetDataLength = sampleCount / eventNumber;
//获取数据
int res = MyDLLimport.AiReadBulkData((int)sampleCount * 2, eventNumber, eventTimeout, g_pBuffer);
while (!_shouldStop)
{
//获取当前的事件
int currentEventID = MyDLLimport.EventCheck(eventTimeout);
if ((currentEventID == 1365) || (currentEventID == -1))
{
break;
}
if (packetDataLength < invalidDataCount)
{
throw new Exception("数据异常");
}
double[] currentChannel1 = new double[packetDataLength];
double[] currentChannel2 = new double[packetDataLength];
unsafe
{
byte *pData = (byte *)g_pBuffer;
if (currentEventID == 0)
{
for (uint i = invalidDataCount; i < packetDataLength; i++)
{
currentChannel1[i] = (*(pData + i * 2) - currentCHAZero) * currentCHAScale;
currentChannel2[i] = (*(pData + i * 2 + 1) - currentCHBZero) * currentCHBScale;
channelData1[i] = currentChannel1[i];
channelData2[i] = currentChannel2[i];
}
}
else
{
for (uint i = 0; i < packetDataLength; i++)
{
currentChannel1[i - 0] = (*(pData + (packetDataLength * currentEventID + i) * 2) - currentCHAZero) * currentCHAScale;
currentChannel2[i - 0] = (*(pData + (packetDataLength * currentEventID + i) * 2 + 1) - currentCHBZero) * currentCHBScale;
channelData1[packetDataLength * currentEventID + i] = currentChannel1[i];
channelData2[packetDataLength * currentEventID + i] = currentChannel2[i];
}
}
}
OnScopeReadDataCompleted(channelData1, channelData2, currentChannel1, currentChannel2, (int)eventNumber, currentEventID + 1);
if (currentEventID == (eventNumber - 1))
{
break;
}
}
}
IsSerialSampling = false;
}
}).Start();
}
