libftdi Archives

Subject: RE: from bb-mode back to uart

From: Ale Max <alemaxx@xxxxxxxxxx>
To: <libftdi@xxxxxxxxxxxxxxxxxxxxxxx>
Date: Sat, 16 Jul 2011 19:02:49 +0200
I do support this proposal. I currently dont have libusb-1.0 installed only the < 1.0
version so I haven't tested Xiaofan's suggestion.

Thanks for the support!

> Date: Sat, 16 Jul 2011 19:43:57 +0800
> Subject: Re: from bb-mode back to uart
> From: xiaofanc@xxxxxxxxx
> To: libftdi@xxxxxxxxxxxxxxxxxxxxxxx
>
> On Sat, Jul 16, 2011 at 7:35 PM, Uwe Bonnes
> <bon@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx> wrote:
> > libusb-1 knows the call
> > int libusb_attach_kernel_driver(libusb_device_handle *dev, int interface);
> >
> > and libftdi could call it. However the circumstances when to call it need to
> > be aggreed on. Calling libusb_attach_kernel_driver on close unconditionally
> > is wrong on many occacion, to name when you call a libftdi programm many
> > times without using the serial driver in between. So either we
> > - add a flag to ftdi_usb_close()
> > - or we add some flag in the ftdi_context that we can set with some call and
> > evaluate on ftdi_usb_close()
> >
> > Opinions?
>
> Since the code has already the following, I think the second option
> is probably better.
> ftdi->module_detach_mode = AUTO_DETACH_SIO_MODULE;
>
> 61 /** Automatic loading / unloading of kernel modules */
> 62 enum ftdi_module_detach_mode
> 63 {
> 64 AUTO_DETACH_SIO_MODULE = 0,
> 65 DONT_DETACH_SIO_MODULE = 1
> 66 };
>
> Just add one more, something like this.
>
> ftdi->module_reattach_mode = AUTO_REATTACH_SIO_MODULE = 0;
>
> /** Automatic re-attach kernel modules upon close or not */
> enum ftdi_module_reattach_mode
> {
> AUTO_REATTACH_SIO_MODULE = 0,
> DONT_REATTACH_SIO_MODULE = 1
> };
>
>
> --
> Xiaofan
>
> --
> libftdi - see http://www.intra2net.com/en/developer/libftdi for details.
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>


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