You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
49 lines
1.0 KiB
Python
49 lines
1.0 KiB
Python
#!/usr/bin/env python3
|
|
|
|
#
|
|
# Copyright (c) 2020 Raspberry Pi (Trading) Ltd.
|
|
#
|
|
# SPDX-License-Identifier: BSD-3-Clause
|
|
#
|
|
|
|
# sudo pip3 install pyusb
|
|
|
|
import usb.core
|
|
import usb.util
|
|
|
|
# find our device
|
|
dev = usb.core.find(idVendor=0x0000, idProduct=0x0001)
|
|
|
|
# was it found?
|
|
if dev is None:
|
|
raise ValueError('Device not found')
|
|
|
|
# get an endpoint instance
|
|
cfg = dev.get_active_configuration()
|
|
intf = cfg[(0, 0)]
|
|
|
|
outep = usb.util.find_descriptor(
|
|
intf,
|
|
# match the first OUT endpoint
|
|
custom_match= \
|
|
lambda e: \
|
|
usb.util.endpoint_direction(e.bEndpointAddress) == \
|
|
usb.util.ENDPOINT_OUT)
|
|
|
|
inep = usb.util.find_descriptor(
|
|
intf,
|
|
# match the first IN endpoint
|
|
custom_match= \
|
|
lambda e: \
|
|
usb.util.endpoint_direction(e.bEndpointAddress) == \
|
|
usb.util.ENDPOINT_IN)
|
|
|
|
assert inep is not None
|
|
assert outep is not None
|
|
|
|
test_string = "Hello World!"
|
|
outep.write(test_string)
|
|
from_device = inep.read(len(test_string))
|
|
|
|
print("Device Says: {}".format(''.join([chr(x) for x in from_device])))
|