C# project for Hantek6074BC

ArnaudB

I have the same problem.
Most of the HTHardDll.dll functions works well, but I have troubles with dsoHTGetData: it always returns 0.
Any ideas ?

ArnaudB

Thanks for your answer e_admin. Now dsoHTGetData returns 1, but I still have troubles to get all the data. According to vcdemo I created 4 arrays of ushort, and sent the pointers to dsoHTGetData. I get back 190 values for CH1 and CH2, and nothing for CH3 and CH4. I expect 8192 values for the 4 arrays so there is a lot missing. I dont know whats going wrong. Here is how I call the function :

1.             ushort[] readBufferCH1 = new ushort[8192];
   
2.             ushort[] readBufferCH2 = new ushort[8192];
   
3.             ushort[] readBufferCH3 = new ushort[8192];
   
4.             ushort[] readBufferCH4 = new ushort[8192];
   
5. 
   
6.             int result = GetData(Hantek_DeviceIndex, readBufferCH1, readBufferCH2, readBufferCH3, readBufferCH4, stControl);
   
7. 
   
8.             for (int i = 0; i < 8192; i++)
   
9.             {
   
10.                 CHRead_Buffer[i, 0] = readBufferCH1[i];
    
11.                 CHRead_Buffer[i, 1] = readBufferCH2[i];
    
12.                 CHRead_Buffer[i, 2] = readBufferCH3[i];
    
13.                 CHRead_Buffer[i, 3] = readBufferCH4[i];
    
14.             }

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And here is the call to the dll :

1.         [DllImport("HTHardDll.dll", CharSet = CharSet.Unicode, CallingConvention = CallingConvention.StdCall)]
   
2.         private static unsafe extern int dsoHTGetData(int nDeviceIndex, ushort* CH1Data, ushort* CH2Data, ushort* CH3Data, ushort* CH4Data, ref ControlData pSTControl);
   
3. 
   
4.         public int GetData(int nDeviceIndex, ushort[] CH1Data, ushort[] CH2Data, ushort[] CH3Data, ushort[] CH4Data, ControlData pSTControl)
   
5.         {
   
6.             unsafe
   
7.             {
   
8.                 fixed (ushort* pCH1Data = CH1Data)
   
9.                 fixed (ushort* pCH2Data = CH2Data)
   
10.                 fixed (ushort* pCH3Data = CH3Data)
    
11.                 fixed (ushort* pCH4Data = CH4Data)
    
12.                 {
    
13.                     return dsoHTGetData(nDeviceIndex, pCH1Data, pCH2Data, pCH3Data, pCH4Data, ref pSTControl);
    
14.                 }
    
15.             }
    
16.         }

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And last thing that may cause the problem : the ControlData. Here is how mine looks like :

1.                 nCHSet = 15,
   
2.                 nTimeDiv = 16,
   
3.                 nTriggerSource = 0,
   
4.                 nHTriggerPos = 50,
   
5.                 nVTriggerPos = 192,
   
6.                 nTriggerSlope = 0,
   
7.                 nBufferLen = 8192,
   
8.                 nReadDataLen = 8192,
   
9.                 nAlreadyReadLen = 0,
   
10.                 nALT = 0

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Thanks a lot in advance for the help