> > did you try setting your timeout to a non -1 number? if the problem
> > is with SrmRecieveCheck(), bypassing it with a small timeout value
> > could solve your problems as well.
>
> Yes. I have tried multiple timeout values. SrmReceiveCheck() does
> not return until at least 8 bytes are in the buffer.
are you saying it thread blocks, or, doesn't return a value until there
are 8 bytes? to quickly test this, try this small adjustment.
// Find out if we have bytes in the queue
serNumBytes = 0;
error = SrmReceiveCheck(m_serRefNum, &serNumBytes);
if ((!error) && (serNumBytes))
{
char serNumBytesChar = serNumBytes + 0x30; // convert to ASCII
FrmCustomAlert(DebugAlert, &serNumBytesChar, NULL, NULL);
// Clear the buffer
MemSet(m_serUARTBuffer, SER_BUFF_SIZE, 0);
// If more bytes are available in UART buffer than we have in the
// serial message buffer, only get what we have room for.
if(serNumBytes > 512)
serNumBytes = 512;
// Grab bytes from the UART buffer
serNumBytes = SrmReceive(m_serRefNum, m_serUARTBuffer, serNumBytes, -1,
&error);
}
that will tell you if it is actually waiting for 8 bytes to come in
specifically on the SrmReceiveCheck before returning, or, if it waits
for 8 bytes before actually telling you there are some bytes available.
as for your 'expert' advice, the one guy i know who could answer your
question specifically (who was introduced to me as "mr. serial manager")
probably doesn't work at palm/palmsource anymore due to recent layoffs :(
i am sure many other people here would love to know their expert
solution to this problem; it seems you were not the only one with
the problem.
[digging up old code]
i found some old code that would grab one byte at a time from the
serial port, but, it made calls specific to XXXReceiveWait and
XXXReceive.
---
// wait for byte to arrive
error =
#ifdef USENEWSERMGR
SrmReceiveWait
#else
SerReceiveWait
#endif
((UInt16)serRef, 1, serInterbyteTimeout);
// if we had no error, our byte is in the receive queue
if (!error)
{
// receive the byte
bytesReceived =
#ifdef USENEWSERMGR
SrmReceive
#else
SerReceive
#endif
((UInt16)serRef, rxByte, 1, serReceiveTimeout, &error);
// see if we received 1 byte and no errors are present
if(!error && bytesReceived == 1)
{
// set the reception OK flag
receptionOK = true;
}
} // end if(!error)
---
yet another alternative solution to the problem? while this worked
on really old units, i have not needed the code on 5.0 units, but,
this might be another way to tackle the problem?
---
Aaron Ardiri [EMAIL PROTECTED]
CEO - CTO +46 70 656 1143
Mobile Wizardry http://www.mobilewizardry.com/
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