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  1. #1
    Registered User
    Join Date
    Aug 2005
    Posts
    12

    Can't open serial port without a USB device.

    Dear All,

    Due to Nokia's serial port is emulated by USB D+, D-.

    It seems not possible to access without a USB device.

    Could you please advice?

    My situation is, I can access phone's com port via CK-53 to pc, however, when I connect to my physical device, there is no USB chip, it seems we can't enable phone's USB mode, and then I can't access the serial port.

    Deep appreciate!
    Best regards,
    Boki.

  2. #2
    Regular Contributor
    Join Date
    Aug 2006
    Location
    Rawalpindi, Pakistan
    Posts
    486

    Re: Can't open serial port without a USB device.

    ur write in order to access USB u have to enable phones USB mode.
    Regards
    Nouman

  3. #3
    Registered User
    Join Date
    Aug 2005
    Posts
    12

    Re: Can't open serial port without a USB device.

    Hi

    After connect the "USB Vbus" pin to DC 5V, and Data GND pin to ground, the phone can be triggered to Serial port mode, however, the data output is still USB data signal, can I output it as UART signal directly ?

    Thank you!

    Best regards,
    Boki.

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