The trainer I have uses ANT+ and the USB dongle is not a HID device,
so I don't think hidapi.dll would work. I know lubusb.dll works
because I already have C++ code that communicates with the trainer.
However, I would be interested to have a look a the FFI bindings for
the hidabip.dll, if you can send me a link to them, it would be
On Fri, Sep 15, 2017 at 2:11 PM, Bert De Ketelaere <bed...@hotmail.com> wrote:
> I started something similar for the Suunto Ambit, but using hidapi.dll. If
> it's of interest I can send it.
> Van: firstname.lastname@example.org <email@example.com> namens
> Alex Harsanyi <alexharsa...@gmail.com>
> Verzonden: vrijdag 15 september 2017 7:53
> Aan: Racket Users
> Onderwerp: [racket-users] libusb FFI bindings for a bike trainer control
> Hi all,
> Has anyone written FFI bindings for libusb? I tried searching for "usb" on
> pkgs.racket-lang.org, but could not find anything.
> I'm planning to write a control application for my bike trainer. This would
> involve reading data values from the trainer (Heart Rate, Cadence, Power,
> and controlling the resistance. This would be a "poor man's zwift" without
> the 3d graphics (http://zwift.com/)
> I have a lot of Racket code that I can reuse for the "GUI" part of the
> application, so it would be relatively easy to write an application that
> allows riding a virtual route, where a "dot" is displayed on a map based on
> distance traveled and controlling the trainer resistance according to the
> gradient for the route. I already have a map widget and code to manage GPS
> data recorded from real-world bike rides.
> What I am missing is the "bottom" part, which would involve controlling the
> trainer and reading data from it. I already started writing C++ code for
> (as I'm familiar with using libusb from C++), but I thought I'd stop and ask
> here before going too far down this path.
> Best Regards,
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