[fpc-pascal] USB Human Interface Devices

[Johann Glaser]

Hi!

Am Montag, den 19.08.2019, 18:22 -0400 schrieb James Richters:
> Oh, for some reason I wasn't thinking I was replacing mydevice.pas
> with snapi.pas...   Ok.. so if
> I understand this correctly,  make the changes necessary in snapi.pas
> to use libusboop.pas instead of the old usb.pas, and then use
> TSNAPIDevice.Create to create a TLIBUSBPseudoHIDInterface to my
> device? ... and that will allow me a more generic method to access
> the device?

Hmm, no. You should make your own unit for your device, from scratch.
And then use snapi.pas as a guide how to do that. As I've written in my
previous EMail:

--- schnipp ---
You really should create your own class descending from TLibUsbDevice
(instead of TLibUsbDeviceWithFirmware).

In your constructor, you have to get a reference to the HID interface
of your device, e.g., by
  TLibUsbPseudoHIDInterface.Create(...)
analogous to
https://github.com/Zaaphod/pas-libusb/blob/Hack/src/examples/mydevice.pas#L141
.

This internally also gets references to the necessary endpoints,
therefore you most probably don't need manual FInterface.FindEndpoint()
(like TMyDevice).

--- schnapp ---

But please pay attention to the new methods, parameters, ...

Bye
  Hansi