[jp] Palm Centro & Ubuntu 7.10 Gutsy

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  • David A. Desrosiers desrod at gnu-designs.com
    Thu Jan 17 11:26:48 EST 2008

     

    On Thu, 2008-01-17 at 07:34 -0800, MYRON SUSSMAN wrote:
    > In summary:
    > 1.  Hook Centro up to USB port, press sync button, wait a few seconds,
    > press jpilot "sync with backup" button.  No response.
    
    > 2.  Close jpilot.  Press sync button, then do 
    > pilot-xfer -p usb: --list
    > This gives a file list.
    
    This is most-likely a timing issue. By the time you try to sync with
    J-Pilot, your hardware -> kernel -> udev -> J-Pilot layers haven't seen
    the presence of the USB device yet, so J-Pilot fails. By the time you
    close J-Pilot, open a shell, run pilot-xfer, it HAS seen the device, and
    you can sync with it. 
    
    I don't have access to a Centro, nor do I know what its processor speed
    is, but I bet if you play with the length of time you wait on the
    J-Pilot side before hitting the Sync button in J-Pilot, you might have a
    higher rate of success. 
    
    Anywhere from 2-10 seconds is normal with these devices, and it is
    entirely dependent on the speed of your PC, speed of your USB interface
    and speed of the processor on the Palm itself. 
    
    I've been trying to pinpoint where the best place is to implement a
    hit-and-wait style polling mechanism inside libpisock-using-libusb, so
    the whole timing issue just goes away completely with these devices.
    
    
    -- 
    David A. Desrosiers
    desrod at gnu-designs.com
    Office..: 860-271-1642
    Skype...: 860-967-3820
    
    
    

     

     

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