private void btnStart_Click(object sender, EventArgs e)
{
short err;
ushort i;
int nBufSize;
ushort[] ChanArray = new ushort[wSelectedChans];
ushort[] GainArray = new ushort[wSelectedChans];
dwDataNum = Convert.ToUInt32(TXT_DATACOUNT.Text);
nBufSize = sizeof(short) * Convert.ToInt32(dwDataNum) * wSelectedChans;
m_data_buffer = Marshal.AllocHGlobal(nBufSize);
m_data_buffer2 = Marshal.AllocHGlobal(nBufSize);
// Configure AI Channel
err = USBDASK.UD_AI_Channel_Config((ushort)Module_Num1, USBDASK.UD_AI_Differential, USBDASK.UD_AI_Differential, USBDASK.UD_AI_Differential, USBDASK.UD_AI_Differential);
if (err != USBDASK.NoError)
{
MessageBox.Show("UD_AI_Channel_Config error = " + err.ToString());
Close();
return;
}
err = USBDASK.UD_AI_Channel_Config((ushort)Module_Num2, USBDASK.UD_AI_Differential, USBDASK.UD_AI_Differential, USBDASK.UD_AI_Differential, USBDASK.UD_AI_Differential);
if (err != USBDASK.NoError)
{
MessageBox.Show("UD_AI_Channel_Config error = :" + err.ToString());
Close();
return;
}
err = USBDASK.UD_AI_Trigger_Config((ushort)Module_Num1, USBDASK.UD_AI_CONVSRC_EXT, USBDASK.UD_AI_TRGMOD_POST, USBDASK.UD_AI_TRGSRC_SOFT, 0, 0, 0, 0);
if (err != USBDASK.NoError)
{
MessageBox.Show("UD_AI_Trigger_Config error = " + err.ToString());
Close();
return;
}
err = USBDASK.UD_AI_Trigger_Config((ushort)Module_Num2, USBDASK.UD_AI_CONVSRC_EXT, USBDASK.UD_AI_TRGMOD_POST, USBDASK.UD_AI_TRGSRC_SOFT, 0, 0, 0, 0);
if (err != USBDASK.NoError)
{
MessageBox.Show("UD_AI_Trigger_Config error = :" + err.ToString());
Close();
return;
}
// Disable double-buffer
err = USBDASK.UD_AI_AsyncDblBufferMode((ushort)Module_Num1, false);
if (err != USBDASK.NoError)
{
MessageBox.Show("UD_AI_AsyncDblBufferMode error = " + err.ToString());
Close();
return;
}
err = USBDASK.UD_AI_AsyncDblBufferMode((ushort)Module_Num2, false);
if (err != USBDASK.NoError)
{
MessageBox.Show("UD_AI_AsyncDblBufferMode error = :" + err.ToString());
Close();
return;
}
err = USBDASK.UD_AI_EventCallBack_x64((ushort)Module_Num1, 1, USBDASK.AIEnd, m_delegate);
if (err < 0)
{
MessageBox.Show("UD_AI_EventCallBack error = " + err.ToString());
Close();
return;
}
// Prepare the Channel Gain Queue
for (i = 0; i < wSelectedChans; i++)
{
ChanArray[i] = i;
GainArray[i] = USBDASK.AD_B_10_V;
}
dSamplerate = Convert.ToDouble(TXT_SAMPLERATE.Text);
err = USBDASK.UD_AI_ContReadMultiChannels((ushort)Module_Num1, wSelectedChans, ChanArray, GainArray, m_data_buffer, dwDataNum * wSelectedChans, dSamplerate, USBDASK.ASYNCH_OP);
if (err != USBDASK.NoError)
{
MessageBox.Show("UD_AI_ContReadMultiChannels error = " + err.ToString());
Close();
return;
}
err = USBDASK.UD_AI_ContReadMultiChannels((ushort)Module_Num2, wSelectedChans, ChanArray, GainArray, m_data_buffer2, dwDataNum * wSelectedChans, dSamplerate, USBDASK.ASYNCH_OP);
if (err != USBDASK.NoError)
{
MessageBox.Show("UD_AI_ContReadMultiChannels error = " + err.ToString());
Close();
return;
}
GPO0Clk();
}