Serial port of XDA

[sjaeger]

Hello, all,

we try to connect to the serial port of the XDA, but I cannot open the port COM1: :(

We have the proper connector, but I have no chance to open the port by software. What can be the reason, do I have to make something on the connectors (bridges ?).

Thanks a lot ...

[eladsalad]

i initially had this problem using windows xp. i fixed it by changing the settings of the resources (I/O Range and IRQ) COM1 uses in the device manager.

hope this helps.

[sjaeger]

Thanks, but I do NOT mean the serial port of any connected PC, I mean the serial port at the bottom of XDA.

I programmed it by embedded VC, on other devices this works, but the phone edition seems to disable the port. I can see COM1: in the registry, but it's not getting active.

I read, that I need a null-modem cable, but this also wasn't sucessfull. What should be inside the cable to communicate with any serial device outside the XDA?

Thanks

[Anonymous]

Make sure the IR port isn't grabbing COM1:

Start/Settings/Connections Tab/Beam
"Receive all incoming beams and select discoverable mode" should be left unchecked. In addition, close (via Settings/System Tab/Memory/Running Programs Tab/Stop) any driver software for accessories like keyboards that connect to the sync/charge port. Then you should be able to connect to COM1.

With respect to a Null Modem: You need to also hardwire some handshaking lines together, so don't abandon the null modem.

[sjaeger]

Hi,

thanks for the first replies. I already switched off the IrDA, and I can open the COM1: of XDA. Everything seems okay, but no data on TX...

I saw the connector layout on this site, but can (want) somebody to tell me the layout, if I want to do serial data-connection to an external device(not activesync)? I think, I need more hardwires than known by me....

I connected:

RTS (pin 9) with CTS (pin 7)
DCD (pin 6) with DTR (pin 11)
RX (pin 10)
TX (pin 8)
GND (pin 16)

What else can I do ????

[Peter Poelman]

I connected:

RTS (pin 9) with CTS (pin 7)
DCD (pin 6) with DTR (pin 11)
RX (pin 10)
TX (pin 8)
GND (pin 16)


I would attempt to connect DCD to the DTR of the computer at the other end, but am unsure whether this woud make a difference.

We experienced problems with the sreial port in older versions of the ROM. if I remember correctly, things didn't work in 3.00.xx. But I doubt you're using something that old.

Good luck...

[Anonymous]

Thanks,

but are there any other bridges/hardwires inside to do inside the connector to acivate the serial activity of the port ?

[sjaeger]

Thanks,

but are there any other bridges/hardwires inside to do inside the connector to acivate the serial activity of the port ?

I also don't have a PC on the other side, it's a device, which has no handshaking ability... :(

[Anonymous]

Thanks, but I do NOT mean the serial port of any connected PC, I mean the serial port at the bottom of XDA.

I programmed it by embedded VC, on other devices this works, but the phone edition seems to disable the port. I can see COM1: in the registry, but it's not getting active.

I read, that I need a null-modem cable, but this also wasn't sucessfull. What should be inside the cable to communicate with any serial device outside the XDA?

Thanks
You do need a null modem adapter. If you are using one, it may not be a proper one.
Or you can use a "serial/modem interface cable" you can get from www.pc-mobile.net in the XDA page.