Am 30.04.2012 13:48, schrieb Thomas Heller:
> I'm having problems opening the second channel on a FT2232H device
> (Windows7 64 bit, using Xiafan Chen's 0.20 binary snapshot build).
>
[...]
> 3. Using libusb-win32 drivers only, for both "USB Serial Converter
> (Interface 0)" and "USB Serial Converter (Interface 1)".
> A) works, B) doesn't work.
>
I got case 3. to work with libftdi, by specifying the correct index and
interface numbers for each call. Which is a bit unfortunate, since I
have to guess the order, although the interface number for each
is contained in the usb_device interface descriptor.
To me it seems a function is needed like this:
int ftdi_usb_open_desc_interface_index(struct ftdi_context *ftdi,
int vendor, int product,
const char* description,
const char* serial,
unsigned int interface,
unsigned int index)
Thomas
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