"Dave Lippincott" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> Does POL support the serial port callback? Instead of a tight loop,
process
> the data as it arrives.
>
if you mean the SetWakeupHandler call then yes, i've done it.
...you can do something like:
class CComPort : public CSerial
{
...
static void RxIRQHandler(UInt32 dwRefCon);
...
};
Err CComPort::OpenPort()
{
Err err=0;
...
SrmExtOpen(...
...
if ((err =
SetWakeupHandler((WakeupHandlerProcPtr)RxIRQHandler,(UInt32)this)) != 0) //
sets up WakeupHandlerProc() for Rx
return err;
PrimeWakeupHandler(1); // wake up for each byte
return err;
}
// rx irq, called if any data
void CComPort::RxIRQHandler(UInt32 dwRefCon)
{
Err err;
CComPort *pCP = (CComPort*)dwRefCon;
UInt8 *pRxBuf;
UInt32 dwSize;
...
for (;;)
{
err = pCP->ReceiveWindowOpen(*&pRxBuf,dwSize);
if (err)
// handle error
if (!dwSize) // check if done
break;
// save byte in some buffer
pCP->ReceiveWindowClose(dwSize); // close window sending number of
bytes rx
}
pCP->PrimeWakeupHandler(1); // init to rx up to buffer size
}
...
NOTE: OS 5 (i think) has problems with SetWakeupHandler...so check into this
...i ended up just polling using a timer event and standard tx/rx
calls...works with
all OSes plus i needed to support bluetooth which is easy then (you cannot
use
SetWakeupHandler for bluetooth)
> ----- Original Message -----
> From: "Mark Chauvin" <[EMAIL PROTECTED]>
> To: "Palm Developer Forum" <[EMAIL PROTECTED]>
> Sent: Wednesday, May 05, 2004 9:17 AM
> Subject: Custom event loop in POL
>
>
> > I have a program that needs to constantly monitor the
> > serial port for data. My old version of the program,
> > written in C w/ PRC-tools, redifined the EventLoop
> > function, but now that I'm using POL and a derivation
> > of the CPalmApp object, what's the right way to do
> > this? Should I have a function that loops
> > continuously & calls the default event loop if no data
> > is waiting in the serial buffer, or should I redefine
> > the CPalmApp event loop, or is there a more elegant
> > way to do this?
> >
> > Thanks
> > -Mark
> >
> > --
> > For information on using the Palm Developer Forums, or to unsubscribe,
> please see http://www.palmos.com/dev/support/forums/
> >
>
>
>
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