forked from cerc-io/plugeth
78 lines
2.3 KiB
Go
78 lines
2.3 KiB
Go
|
// Copyright 2013 Google Inc. All rights reserved.
|
||
|
|
//
|
||
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
||
|
|
// you may not use this file except in compliance with the License.
|
||
|
|
// You may obtain a copy of the License at
|
||
|
|
//
|
||
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
||
|
|
//
|
||
|
|
// Unless required by applicable law or agreed to in writing, software
|
||
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
||
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||
|
|
// See the License for the specific language governing permissions and
|
||
|
|
// limitations under the License.
|
||
|
|
|
||
|
|
package usb
|
||
|
|
|
||
|
|
/*
|
||
|
|
#ifndef OS_WINDOWS
|
||
|
|
#include "os/threads_posix.h"
|
||
|
|
#endif
|
||
|
|
#include "libusbi.h"
|
||
|
|
#include "libusb.h"
|
||
|
|
*/
|
||
|
|
import "C"
|
||
|
|
|
||
|
|
type Descriptor struct {
|
||
|
|
// Bus information
|
||
|
|
Bus uint8 // The bus on which the device was detected
|
||
|
|
Address uint8 // The address of the device on the bus
|
||
|
|
|
||
|
|
// Version information
|
||
|
|
Spec BCD // USB Specification Release Number
|
||
|
|
Device BCD // The device version
|
||
|
|
|
||
|
|
// Product information
|
||
|
|
Vendor ID // The Vendor identifer
|
||
|
|
Product ID // The Product identifier
|
||
|
|
|
||
|
|
// Protocol information
|
||
|
|
Class uint8 // The class of this device
|
||
|
|
SubClass uint8 // The sub-class (within the class) of this device
|
||
|
|
Protocol uint8 // The protocol (within the sub-class) of this device
|
||
|
|
|
||
|
|
// Configuration information
|
||
|
|
Configs []ConfigInfo
|
||
|
|
}
|
||
|
|
|
||
|
|
func newDescriptor(dev *C.libusb_device) (*Descriptor, error) {
|
||
|
|
var desc C.struct_libusb_device_descriptor
|
||
|
|
if errno := C.libusb_get_device_descriptor(dev, &desc); errno < 0 {
|
||
|
|
return nil, usbError(errno)
|
||
|
|
}
|
||
|
|
|
||
|
|
// Enumerate configurations
|
||
|
|
var cfgs []ConfigInfo
|
||
|
|
for i := 0; i < int(desc.bNumConfigurations); i++ {
|
||
|
|
var cfg *C.struct_libusb_config_descriptor
|
||
|
|
if errno := C.libusb_get_config_descriptor(dev, C.uint8_t(i), &cfg); errno < 0 {
|
||
|
|
return nil, usbError(errno)
|
||
|
|
}
|
||
|
|
cfgs = append(cfgs, newConfig(dev, cfg))
|
||
|
|
C.libusb_free_config_descriptor(cfg)
|
||
|
|
}
|
||
|
|
|
||
|
|
return &Descriptor{
|
||
|
|
Bus: uint8(C.libusb_get_bus_number(dev)),
|
||
|
|
Address: uint8(C.libusb_get_device_address(dev)),
|
||
|
|
Spec: BCD(desc.bcdUSB),
|
||
|
|
Device: BCD(desc.bcdDevice),
|
||
|
|
Vendor: ID(desc.idVendor),
|
||
|
|
Product: ID(desc.idProduct),
|
||
|
|
Class: uint8(desc.bDeviceClass),
|
||
|
|
SubClass: uint8(desc.bDeviceSubClass),
|
||
|
|
Protocol: uint8(desc.bDeviceProtocol),
|
||
|
|
Configs: cfgs,
|
||
|
|
}, nil
|
||
|
|
}
|