stressball.py

import usb1  # Using with_USBContext branch
import sys

REP1 = bytes([0x0f, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08])
REP2 = bytes([0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x09])

HID_REPORT = 9
CONTROL_REQUEST_TYPE_OUT = usb1.RECIPIENT_INTERFACE | usb1.REQUEST_TYPE_CLASS 
TO = 200  # Timeout

def spew_tsv(*fields):
    print("\t".join(fields))

with usb1.USBContext() as context:
    handle = context.openByVendorIDAndProductID(
        0x1d34, 0x0020
    #    skip_on_error=True,
    )

    if handle is None:
        # Device not present, or user is not allowed to access device.
        sys.exit("No handle")

    handle.setAutoDetachKernelDriver(True)
    with handle.claimInterface(0):
        spew_tsv("squeeze", "twist", "push")
        while True:
            handle.controlWrite(CONTROL_REQUEST_TYPE_OUT, HID_REPORT, 0x0200, 0x0000, REP1, timeout=TO)
            handle.controlWrite(CONTROL_REQUEST_TYPE_OUT, HID_REPORT, 0x0200, 0x0000, REP2, timeout=TO)
            data = handle.interruptRead(1, 8, timeout=TO)
            spew_tsv(data[0], data[1], data[2])