How to query the device serial number of an already opened connection

[Alex Scarbro <alex.scarbro@xxxxxxxxxxxxxx>]

Hello,

I'm working on an improved LCDproc HD44780 driver using the FTDI FT2232D to add keypad support.

I have both interfaces working perfectly, but would like to tell the user what the serial number is of the interface that has been opened.

Is it possible to query the serial number of an interface that has already been opened?

e.g.

    /* open LCD channel*/

    ftdi_init(&p->ftdic);

    ftdi_set_interface(&p->ftdic, INTERFACE_A);

    ftdi_usb_open(&p->ftdic, ftdiVendorIdLcd, ftdiProductIdLcd);

    <QUERY OPENED SERIAL NUMBER HERE>

    printf("Opened device serial number is: %s",serilaNo);

    ftdi_deinit(&p->ftdic);

Best regards,

Alex

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