No longer able to create custom USB HID devices.

[fasteddy516]

CircuitPython version

Adafruit CircuitPython 7.0.0-beta.0 on 2021-08-24; Adafruit Metro M4 Express with samd51j19
Adafruit CircuitPython 7.0.0-beta.0 on 2021-08-24; Adafruit QT Py M0 with samd21e18

Code/REPL

"""boot.py"""
import usb_hid

# fmt: off
# This is only one example of a gamepad descriptor, and may not suit your needs.
GAMEPAD_REPORT_DESCRIPTOR = bytes((
    0x05, 0x01,  # Usage Page (Generic Desktop Ctrls)
    0x09, 0x05,  # Usage (Game Pad)
    0xA1, 0x01,  # Collection (Application)
    0x85, 0x04,  # Report ID (will be replaced at runtime)
    0x05, 0x09,  #   Usage Page (Button)
    0x19, 0x01,  #   Usage Minimum (Button 1)
    0x29, 0x10,  #   Usage Maximum (Button 16)
    0x15, 0x00,  #   Logical Minimum (0)
    0x25, 0x01,  #   Logical Maximum (1)
    0x75, 0x01,  #   Report Size (1)
    0x95, 0x10,  #   Report Count (16)
    0x81, 0x02,  #   Input (Data,Var,Abs,No Wrap,Linear,Preferred State,No Null Position)
    0x05, 0x01,  #   Usage Page (Generic Desktop Ctrls)
    0x15, 0x81,  #   Logical Minimum (-127)
    0x25, 0x7F,  #   Logical Maximum (127)
    0x09, 0x30,  #   Usage (X)
    0x09, 0x31,  #   Usage (Y)
    0x09, 0x32,  #   Usage (Z)
    0x09, 0x35,  #   Usage (Rz)
    0x75, 0x08,  #   Report Size (8)
    0x95, 0x04,  #   Report Count (4)
    0x81, 0x02,  #   Input (Data,Var,Abs,No Wrap,Linear,Preferred State,No Null Position)
    0xC0,        # End Collection
))
# fmt: on

gamepad = usb_hid.Device(
    report_descriptor=GAMEPAD_REPORT_DESCRIPTOR,
    usage_page=0x01,  # Generic Desktop Control
    usage=0x05,  # Gamepad
    report_ids=(4,),
    in_report_lengths=(6,),  # This gamepad sends 6 bytes in its report.
    out_report_lengths=(0,),  # It does not receive any reports.
)

usb_hid.enable(
    (
        usb_hid.Device.KEYBOARD,
        usb_hid.Device.MOUSE,
        usb_hid.Device.CONSUMER_CONTROL,
        gamepad,
    )
)

Behavior

On the Metro M4 I get the following error in boot_out.txt:

Traceback (most recent call last):
  File "boot.py", line 38, in <module>
TypeError: '' object isn't subscriptable

On the QT-PY boot_out.txt is empty, and I get this message in the serial console:

You are in safe mode because:
CircuitPython core code crashed hard. Whoops!
Crash into the HardFault_Handler.
Please file an issue with the contents of your CIRCUITPY drive at
https://github.com/adafruit/circuitpython/issues

Description

I am unable to create custom USB HID devices after the API change from 7.0.0 alpha.x > beta.0.

I was trying to update my joystick library to use the updated API, but when I couldn't get that to work I tried just updating the gamepad example from the learn guide, ultimately with the same results. The code in question ran perfectly in the 7.0.0 alphas 3 through 6.

I'm not sure if this is a bug, or if I'm passing values incorrectly in the usb_hid.Device() call.

Additional information

No response