Status: draft — living spec (ADR-0003 §7).
Firmware: src/usb_hid.cpp — only in the sferic-usbhid build
(ARDUINO_USB_MODE=0, -DSFERIC_USB_HID; see ADR-0005). The default
sferic firmware has no usb toolset.
Toolset id: usb
A station declares the usb capability only when running the sferic-usbhid
firmware. On other builds usb.* is capability_not_present.
Enumerates as a USB keyboard to the host the StickS3 is plugged into.
{ station, text } → types text as key events (boot-keyboard reports,
ascii subset: letters, digits, space, newline, .-_). Authorized input
testing only (ADR-0001).