While the other Joystick objects currently supported by the USB Host
code are driven by HID data, the Xbox does not contain HID data and
instead works at the top level.
To handle this I made the Joystick object use multiple InHeritence like:
class JoystickController : public USBDriver, public USBHIDInput
This allowed me to have the object work either way. This did add some
complexity in that some of the methods like is the object connected
(The bool operator) had to be overwritten as both of the bases classes
had it. In addition needed to update the other query functions to be
able to grab the data from mydevice or device depending on which type of
controller was connected.
Since this looked like a valid way, I then merged the Keyboard Extras
code that Keyboard and made it also do a similar multiple inheritance.
In this case however I restricted the HID top level report handle code
to only accept it if on the same object that claimed the keyboard.
The mouse test app was updated as well
Needed HID Parser to support Bidirectional Transfers
The HidParser code was setup such that the claim for a report, the caller could say I want to claim the whole thinig and allowed callback functions for processing of in buffer and out buffer.
Allow RawHID to contribute Transfer_t
Since RawHID may need more resources than most, maybe it should contribute the additional structures
The constructor for a RAWHID object allows you to specify the top usage
that it wishes to connect to. I used this for example to be able to
connect to a Teensy with the RAWHID associated with emulating the
Serial object.
If a HID Input class says that it wants to claim the whole interface, I
reuse the buffer associated with holding the HID descriptor and use it
for output buffers.
I did a quick test using the Serial test app, where I can type in lines like:
#38400,7E1
And it reopens the serial port at the specified baud and format. Note the formats the test app looks for is 7E1, 7O1, 8N1, 8N2.
Tested on an FTDI, PL2303 and CH341. I also tested going to Teensy 3.2 CDCACM. But as far as I know the teensy could not care less about Baud/Format.
Unless of course there is a way to query the value and use it to set a Hardware Serial port to it.
Kurt Eckhardt
PaulStoffregen