Audio frequency graph

[hahakimkim]

Hi masters in programming. I am a final year student in physics. I am trying to make an audio measurement program that will connect through a TMS320C542 DSKPLUS board from Texas Instrument by using C++ and i just started to do programming. I am so lost..

I have this code with me that should show the graph of frequency when an audio is being recorded in real time. It cant really connect through a DSP yet because i still cant figure out how.

This code i have should show the audio input's frequency through the PC soundcard. But then assertion failed error keep on coming out whenever i tried to build it. I am using Windows 98 OS pc and Visual Basic 6.0.

This is the line that shows about assertion failed:

}
// Begin sampling
m_bRecording = TRUE;
m_hThread = CreateThread(NULL,NULL,RecorderThreadFunc,this,NULL,NULL);
waveInStart(m_hWaveIn);
ASSERT(m_hThread != NULL); (the line with assertion failed error)
;SetPriorityClass(m_hThread,REALTIME_PRIORITY_CLASS);
SetThreadPriority(m_hThread,THREAD_PRIORITY_HIGHEST);
}
void Recorder::Stop()
{
if(!m_bDeviceOpen || !m_bRecording)
return;
if(waveInStop(m_hWaveIn) != MMSYSERR_NOERROR)
return;
else
m_bRecording=FALSE;
}

And at the call stack view, there are these sentences that i cant understand:


Recorder::Start() line 182 + 34 bytes
CWaveInFFTDlg::OnInitDialog() line 212
AfxDlgProc(HWND__ * 0x000009d8, unsigned int 272, unsigned int 2568, unsigned int 2568) line 35 + 14 bytes
KERNEL32! bff7363b()
KERNEL32! bff94407()

And i would like to ask for suggestion on how to make it able to communicate with the target DSKPLUS board through a parallel port. The DSK board i been using is obsolete now so i cant get any help from the TI page..

I've been googling for 3 months plus and still cant find the solution. Hope u all can help me

[S_M_A]

Since m_hThread is NULL the call to CreateThread failed. Call GetLastError to find out why.
See http://msdn.microsoft.com/en-us/libr...53(VS.85).aspx