We are using wakeup handler function for recieving data from USB port.
Sample code is as follows
error = SrmExtOpen(serPortCradleUSBPort, &config, sizeof(config),&openPort);
if (!error)
{
error =
SrmSetWakeupHandler(openPort,(WakeupHandlerProcPtr)RecvEventHandler,
(UInt32)openPort);
error = SrmPrimeWakeupHandler (openPort, 1);
}
In handler function we have written following code
static void RecvEventHandler(UInt32 refCon)
{
Err error = 0;
char buf[4];
UInt32 count = 0;
Err err = 0;
UInt8* bufP;
while (true) {
//read the data
err = SrmReceiveWindowOpen(openPort, &bufP, &count);
if (err)
SrmClearErr(openPort);
if (!count)
{
break;
}
if (bufP)
{
//Process the data here.
}
//Let the New Serial Manager know that we're done with the data.
SrmReceiveWindowClose(openPort, count);
}
--
For information on using the Palm Developer Forums, or to unsubscribe, please see
http://www.palmos.com/dev/support/forums/
