examples/device/hid_generic_inout/README.md - third_party/github/hathach/tinyusb - Git at Google

 # HID Generic In/Out

 A USB HID device that exchanges raw IN/OUT reports over a vendor-defined usage page, with no standard keyboard/mouse usage. It simply echoes back whatever the host sends.

 ## What it does

 - Presents one HID interface built from the generic in/out report descriptor template (vendor usage page), with both an IN and an OUT endpoint.
 - Whenever the host sends data on the OUT endpoint (or via SET_REPORT), the device echoes the same bytes back to the host via `tud_hid_report`.
 - The LED blinks to indicate USB state (250 ms not mounted, 1000 ms mounted, 2500 ms suspended).
 - Because the reports carry no standard HID usage, the device is meant to be driven by a host-side tool rather than recognized as a keyboard/mouse. The example ships with `hid_test.js` (node-hid) and `hid_test.py` (Python `hid`) scripts to send and receive data.

 ## USB Descriptors

 | Interface | Class driver |
 |-----------|--------------|
 | 0 | HID (generic in/out, raw vendor reports) |

 ## Configuration

 Notable `tusb_config.h` settings:

 ```c
 #define CFG_TUD_HID            1
 #define CFG_TUD_HID_EP_BUFSIZE 64
 ```

 ## Building

 CMake:

 ```bash
 mkdir build && cd build
 cmake -DBOARD=raspberry_pi_pico ..
 cmake --build .
 ```

 Make:

 ```bash
 make BOARD=raspberry_pi_pico all
 ```

 ## Try it

 After flashing, run the bundled host tool — `node hid_test.js` or `python3 hid_test.py` — to send a buffer to the device and observe the same data echoed back.
	# HID Generic In/Out

	A USB HID device that exchanges raw IN/OUT reports over a vendor-defined usage page, with no standard keyboard/mouse usage. It simply echoes back whatever the host sends.

	## What it does

	- Presents one HID interface built from the generic in/out report descriptor template (vendor usage page), with both an IN and an OUT endpoint.
	- Whenever the host sends data on the OUT endpoint (or via SET_REPORT), the device echoes the same bytes back to the host via `tud_hid_report`.
	- The LED blinks to indicate USB state (250 ms not mounted, 1000 ms mounted, 2500 ms suspended).
	- Because the reports carry no standard HID usage, the device is meant to be driven by a host-side tool rather than recognized as a keyboard/mouse. The example ships with `hid_test.js` (node-hid) and `hid_test.py` (Python `hid`) scripts to send and receive data.

	## USB Descriptors

	\| Interface \| Class driver \|
	\|-----------\|--------------\|
	\| 0 \| HID (generic in/out, raw vendor reports) \|

	## Configuration

	Notable `tusb_config.h` settings:

	```c
	#define CFG_TUD_HID 1
	#define CFG_TUD_HID_EP_BUFSIZE 64
	```

	## Building

	CMake:

	```bash
	mkdir build && cd build
	cmake -DBOARD=raspberry_pi_pico ..
	cmake --build .
	```

	Make:

	```bash
	make BOARD=raspberry_pi_pico all
	```

	## Try it

	After flashing, run the bundled host tool — `node hid_test.js` or `python3 hid_test.py` — to send a buffer to the device and observe the same data echoed back.