Frameworks > Serial Framework

rs232 OnData problem

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abadon:
Hi,
I have a problem with OnData event.
When I receive a short messages all is OK. But when device sends me a big message, i don't have all message in buffor. I'm sure that meaasge was sending by device because i see that on serial monitor.

My OnData function :
void CCSerialAdapter::OnData(LPVOID  lpBuffer, DWORD dwSize)
{
   const char cSeparator = CHAR(10);
   char* Buf;
   Buf = (char*)LocalAlloc(LPTR, dwSize + 1);
   ZeroMemory(Buf, dwSize + 1);
   CopyMemory(Buf, lpBuffer, dwSize);

        ...

   LocalFree((HLOCAL)Buf);
}

My connection proprtites :

m_pClient->SetTransport( wcl::ctSerial );
m_pClient->GetSerialParams()->SetPort(iPort);
m_pClient->GetSerialParams()->SetBaudRate( wcl::br115200 );
wcl::CwclBuffers buffers( m_pClient );
buffers.SetReadBuffer( 4126 );
buffers.SetWriteBuffer( 4126 );
m_pClient->SetBuffers( buffers );

This is my firs time to use WCL so forgive me if my question is stupid :)

Thx,

Mike Petrichenko:
Hi,

Ondata event fires when intenal PCs buffer is full. Your long message from device can be splitted to more than on OnData even.

abadon:
That's correct, i have more than one event and I add all to my queue.

Thats my all OnData function:

void CCSerialAdapter::OnData(LPVOID  lpBuffer, DWORD dwSize)
{
   const char cSeparator = CHAR(10);
   char* Buf;
   Buf = (char*)LocalAlloc(LPTR, dwSize + 1);
   ZeroMemory(Buf, dwSize + 1);
   CopyMemory(Buf, lpBuffer, dwSize);
   QStringList strList = QStringList::split( cSeparator , Buf, false );

   for ( int i = 0 ; i< strList.count() ; i++ )
   {
      if ( strList[ i ].length() >= 1 )
      {
      m_QuaueMutex.lock();
      m_AnswerList.push_back( strList[ i ] );
      m_QuaueMutex.unlock();
      }
   }
   LocalFree( ( HLOCAL ) Buf );
}
All messages i have in m_AnswerList.
I found funny thing , when i add sleep(300) in the end of the function, everything works almost good ( i loose only one line ).

Thx

Mike Petrichenko:
What is BT driver you use? I have to check it and add Sleep (or somthing) into WCL code to prevent such issue in the future :)

abadon:
I don't use any blueTooth , i have only rs232 ports.

Thx.

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