python hid test (linux/macos), should replace pyudev

device.py

# hid==1.0.4
# pyusb==1.0.2
# NOTE: should install hodpai (brew/package manager)
import hid
import binascii


def dec_to_hex(value):
    return "{0:x}".format(value)


# interface = bInterfaceNumber, devices can have multiple interfaces
# choose wisely ;)
# some info can be gathered by:
#   $ lsusb -v
# or device specific:
#   $ lsusb -d vid:pid -v
supported_devices = {
    'Tipro': {'vendor_id': '1222',
              'devices': [
                  {'name': 'Handset Controller',
                   'product_id': 'facb', 'interface': 1}
                   ]
              }
}

devices_to_bind = {}

# IF we decide to use pyusb to get device info, we can use it to get
# bInterfaceNumber using a custom matcher by class (3), and also get
# wMaxPacketSize as a bonus
# also, MAYBE, we can register a callback to be notified about device
# add/remove (https://github.com/pyusb/pyusb/pull/160)
for dev in hid.enumerate():
    manufacturer = dev.get('manufacturer_string')
    product = dev.get('product_string')

    if manufacturer in supported_devices:
        for d in supported_devices[manufacturer]['devices']:
            if product == d['name'] and \
                    dev.get('interface_number') == d['interface'] and \
                    dec_to_hex(dev.get('product_id')) == d['product_id']:
                # print(d, dev)
                # print(dec_to_hex(dev.get('usage')),
                      # dec_to_hex(dev.get('usage_page')))
                devices_to_bind["%s %s" % (manufacturer, product)] = \
                    {'path': dev.get('path')}

print("devices to bind:", devices_to_bind)
# and open a device to read it's data:
# on linux we can open hidraw directly; check if we can do it on macos as well
d = hid.Device(path=devices_to_bind['Tipro Handset Controller']['path'])
# 8 = wMaxPacketSize
while True:
    data = binascii.hexlify(d.read(8)).decode()
    # macos keep reading "0000000000000000" while idle
    # macos now: "0100000000000000"

    if data:
        print(data)

d.close()