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62 lines
2.3 KiB
Python
62 lines
2.3 KiB
Python
# Copyright (c) 2018 Atmosphere-NX
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#
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# This program is free software; you can redistribute it and/or modify it
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# under the terms and conditions of the GNU General Public License,
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# version 2, as published by the Free Software Foundation.
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#
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# This program is distributed in the hope it will be useful, but WITHOUT
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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# more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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import usb
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import Packet
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class UsbInterface():
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def __init__(self):
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self.dev = usb.core.find(idVendor=0x057e, idProduct=0x3000)
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if self.dev is None:
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raise ValueError('Device not found')
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self.dev.set_configuration()
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self.cfg = self.dev.get_active_configuration()
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self.intf = usb.util.find_descriptor(self.cfg, bInterfaceClass=0xff, bInterfaceSubClass=0xff, bInterfaceProtocol=0xfc)
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assert self.intf is not None
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self.ep_in = usb.util.find_descriptor(
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self.intf,
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custom_match = \
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lambda e: \
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usb.util.endpoint_direction(e.bEndpointAddress) == \
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usb.util.ENDPOINT_IN)
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assert self.ep_in is not None
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self.ep_out = usb.util.find_descriptor(
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self.intf,
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custom_match = \
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lambda e: \
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usb.util.endpoint_direction(e.bEndpointAddress) == \
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usb.util.ENDPOINT_OUT)
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assert self.ep_out is not None
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def close(self):
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usb.util.dispose_resources(self.dev)
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def blocking_read(self, size):
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return ''.join(chr(x) for x in self.ep_in.read(size, 0xFFFFFFFFFFFFFFFF))
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def blocking_write(self, data):
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self.ep_out.write(data, 0xFFFFFFFFFFFFFFFF)
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def read_packet(self):
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packet = Packet.Packet()
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hdr = self.blocking_read(Packet.HEADER_SIZE)
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packet.load_header(hdr)
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if packet.body_len:
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packet.load_body(self.blocking_read(packet.body_len))
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return packet
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def send_packet(self, packet):
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data = packet.get_data()
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self.blocking_write(data[:Packet.HEADER_SIZE])
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if (len(data) > Packet.HEADER_SIZE):
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self.blocking_write(data[Packet.HEADER_SIZE:])
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