Created
November 22, 2018 11:41
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Read backlight for x230 / x330 taobao FHD mod
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#!/usr/bin/env python | |
import sys | |
import array | |
import usb.core | |
import usb.util | |
import os | |
path = "/tmp/backlight-value" | |
# decimal vendor and product values | |
dev = usb.core.find(idVendor=0x10c4, idProduct=0x83ce) | |
cfg = dev.get_active_configuration() | |
intf = cfg[(0,0)] | |
interface = 0 | |
read_ep = usb.util.find_descriptor( | |
intf, | |
custom_match = \ | |
lambda e: \ | |
usb.util.endpoint_direction(e.bEndpointAddress) == \ | |
usb.util.ENDPOINT_IN) | |
assert read_ep is not None | |
if dev.is_kernel_driver_active(interface) is True: | |
dev.detach_kernel_driver(interface) | |
usb.util.claim_interface(dev, interface) | |
while 1: | |
try: | |
data = dev.read(read_ep.bEndpointAddress,read_ep.wMaxPacketSize) | |
tmp = open(path, "w") | |
tmp.write("%d\r\n" % data[-1]) | |
tmp.close() | |
except usb.core.USBError as e: | |
data = None | |
if e.args == ('Operation timed out',): | |
continue | |
usb.util.release_interface(dev, interface) | |
dev.attach_kernel_driver(interface) |
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