> I am trying to write data to a TEC B-211 portable printer through the
> IR port on the Palm SPT1700 device from Symbol. Since the TEC-printer
> is only IrDA compatible on the SIR physical layer, I don't know how
> to write to it on this (low) level.
What you want to do is not a terribly easy task.
I've written code (under contract to a division of Symbol) to print to a TEC
B-211. However, I can't give the code to you without permission of that
division.
The general idea is to use the serial manager to drive the IR port,
communicating in half-duplex mode. You'll need to disable receiving before
sending, and then re-enable it after sending.
Here's a bit of code that I use to enable/disable receiving, and also to set
options so that the serial manager will use the IR port rather than the
serial port.
Neil
static Err DisableReceive()
{
SerReceiveFlush(gSerialRefNum, 0);
return SerControl(gSerialRefNum, serCtlRxDisable, NULL, 0);
}
static Err SetOptions()
{
Err err;
SerSettingsType settings;
settings.baudRate = kTecIRBaudRate;
settings.flags = serSettingsFlagStopBits1 | serSettingsFlagBitsPerChar8;
err = SerSetSettings(gSerialRefNum, &settings);
if (err)
return err;
#ifdef nodef
// this control call seems to sometimes crash. Don't know why
// Also, it returns 768 (serErrNotImplemented) on an SPT1740
// (although it works fine on a Palm VII which also runs Palm OS 3.2)
err = SerControl(gSerialRefNum, serCtlIrScanningOff, NULL, 0);
if (err)
return err;
#endif
err = SerControl(gSerialRefNum, serCtlIrDAEnable, NULL, 0);
if (err)
return err;
err = DisableReceive();
return err;
}
static Err EnableReceive(int pauseAmount)
{
const Long kSerSendTimeoutParameter = -1;
Err err;
Err err2;
err = SerSendWait(gSerialRefNum, kSerSendTimeoutParameter);
if (pauseAmount) {
Pause(pauseAmount);
}
err2 = SerControl(gSerialRefNum, serCtlRxEnable, NULL, 0);
if (err == 0)
err = err2;
return err;
}
> My question is:
> ----------------
> Is it possible to write to this printer via the IR-port on a serial
> level (SIR), and if so, how? (just in general terms)
> Can someone point out some places to look for more info on this subject?
>
> Equipment I am using:
> ----------------------
> CodeWarrior on a Win-NT PC to make PalmOS applications,
> Symbol SPT-1700 palm device with barcode scanner,
> TEC B-211 portable printer with IR receiveing capabilities.
>
>
> Best regards,
> Sigurdur Ragnarsson,
> Strengur hf.
> Armuli 7
> 108 Reykjavik
> Iceland
>
> mail: [EMAIL PROTECTED]
>
--
Neil Rhodes
Calliope Enterprises, Inc.
1328 Clock Avenue
Redlands, CA 92374
(909) 793-5995 [EMAIL PROTECTED] fax: (909) 793-2545
