Using the USB port as a serial port :-)

Discussion in 'Questions (Windows Mobile)' started by taximania, Sep 24, 2009.

  1. taximania

    taximania Well-Known Member Licensed User

    I've downloaded the free drivers/software from here,
    Zeno USB Host Drivers Windows Mobile Pocket PC freeware software mobile friendly download

    Apparently it/they work with WM5/6 etc.

    I've ordered a 'small USB 'to 'female type A' converter from Ebay.
    When it's delivered, I'll be able to try out the software with a Card Reader, mouse, 'SERIAL CONNECTION' etc with my O2 XDA Orbit.

    If this actually works, the serial port bit, then :sign0060:

    Watch this space :)
     
  2. mjcoon

    mjcoon Well-Known Member Licensed User

    Errm, "the USB port"?

    I thought most PDAs have a USB port but only a client-end port. My Pocket Loox is one of the rarer sort that has host-end too. I use it (with limitations) to connect to a USB stick or a keyboard.

    But then it also has a native serial port, so I have no need to try USB-to-serial. Would you not need USB-host to do that?

    Mike.
     
  3. taximania

    taximania Well-Known Member Licensed User

    Hi Mjcoon.
    The files I posted links to before seem to do just that.

    My O2 xda doesn't have a Serial Port or IR built in.

    Many of my 'projects' use Microchip Pic controllers.
    Using the USB port on an Xda as a serial port to 'talk' to other devices
    would be great for a lot of users of Basic4ppc.
     
  4. mjcoon

    mjcoon Well-Known Member Licensed User

    Hi Taximania, I admit I was going by the "Host" in the link you gave, and my looking up the XDA and seeing it has a "direct" USB port, which can surely only be of one gender. (My Loox is indirect in that a proprietary multi-pole adaptor is needed to plug in USB or either gender or serial cables.)

    On the other hand those drivers might work with my Loox; I see it mentions the Loox 560N which is the next one "up" from mine...

    Cheers, Mike.
     
  5. taximania

    taximania Well-Known Member Licensed User

    Quick update, no success :(

    Nothing I plug into the USB port of my XDA is recognised.

    But, and it's a small 'but'.
    My XDA now has a 'Serial on USB' port at COM8: It didn't before.

    I won't connect the XDA to a serial port just yet. 13V might fry the XDA.
    So I'll mod a cable and see if it will talk to a MicroPic at 5V levels.

    :sign0144: :cool:
     
  6. ttu

    ttu New Member Licensed User

    Hi Taximania,
    Did you put FT232 chip to PDA usb bus and MAX232 level controller, like any usb-com cable has to provide RS232 connection?
    I have Mio P560 device and I will try to do the same.
    I wish good luck.
    ttu
     
  7. taximania

    taximania Well-Known Member Licensed User


    I'm thinking the installed libs might use the USB port in a serial RS232 type way, but only at the USB's 5V levels.
    USB only uses 5V lines, so do my Microchip boards.
    Therefore I'm going to 'try' a 5V connection with my new 'COM8' on the XDA.
     
  8. ttu

    ttu New Member Licensed User

    Sorry, but I can not understand.
    USB has differential transceiver wire pair (d+ and d-).
    How can bee directlly Rx an Tx signals?
     
  9. taximania

    taximania Well-Known Member Licensed User

  10. taximania

    taximania Well-Known Member Licensed User

    I've just downloaded 212mb of Microchip USB libs and demo's :confused:

    I'm sticking to Bluetooth>Serial for now :)

    I think the Xda USB port can 'source' a connected voltage or device.
    eg. for charging etc
    It certainley doesn't supply voltage via USB.

    Good luck with your findings.
    I'm giving my head a rest :)

    EDIT: All the examples I came across are programmed in 'C'.
    Even the link I posted earlier.
    Yes I know 'C', but I can't get my puter to program Pics from compiled Hex files from C programs.
     
    Last edited: Oct 3, 2009
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