怎么获取网卡的Pid和vid

Posted 2023-05-09

ipconfig/all,用cmd命令直接查询即可 参考技术A C/C++ code
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// TODO: Add your control notification handler code here
CString strMac;
NCB ncb;
ADAPTER_STATUS adapt;
memset(&ncb,0,sizeof(ncb));
ncb.ncb_command = NCBRESET;
//首先对网卡发送一个NCBRESET命令以便进行初始化
Netbios(&ncb);
ncb.ncb_command = NCBASTAT;
strcpy((char *)ncb.ncb_callname,"*");
// 指定返回的信息存放的变量
ncb.ncb_buffer = (unsigned char *)&adapt;
ncb.ncb_length = sizeof(adapt);
// 发送NCBASTAT命令以获取网卡的信息
Netbios(&ncb);
// 把网卡MAC地址格式化成常用的16进制形式
strMac.Format( "%02X%02X-%02X%02X-%02X%02X\n",
adapt.adapter_address[0],
adapt.adapter_address[1],
adapt.adapter_address[2],
adapt.adapter_address[3],
adapt.adapter_address[4],
adapt.adapter_address[5]);
m_edit.SetWindowText(strMac);

libusb 根据设备的serialnumber来打开

在libusb开源的源码当中，有根据VID和PID来打开设备的接口。但是这对于设备来说并不唯一。因为有很多设备的VID和PID都是一样的，比如iPhone。

但是设备的序列号就是唯一的，所以根据参照VID和PID打开的源码，如下就是打开一个指定serialnumber的设备。

libusb_device_handle* libusb_open_device_with_serialnumber(
libusb_context* ctx, const char* serial_number) {
struct libusb_device** devs;
struct libusb_device* dev;
struct libusb_device_handle* handle = NULL;
char string[128];
char serialnumber[128] = "";
uint8_t string_index[3];
size_t i = 0;
int r = 0;

if (serial_number)
strcpy(serialnumber, serial_number);

if (libusb_get_device_list(ctx, &devs) < 0)
return NULL;

while ((dev = devs[i++]) != NULL) {
struct libusb_device_descriptor desc;
r = libusb_get_device_descriptor(dev, &desc);

if (r < 0)
goto out;

string_index[2] = desc.iSerialNumber;
r = libusb_open(dev, &handle);

if (r < 0) {
handle = NULL;
break;
}

if (libusb_get_string_descriptor_ascii(handle, string_index[2], (unsigned char*)string, 128) >= 0) {
if (!strcmp(serialnumber, string))
break;
}

libusb_close(handle);
handle = NULL;
}

out:
libusb_free_device_list(devs, 1);
return handle;
}