device

问题 I need to get connected USB device list from windows by using python or cmd. for python i'm trying this. import win32com.client def get_usb_device(): try: usb_list = [] wmi = win32com.client.GetObject("winmgmts:") for usb in wmi.InstancesOf("Win32_USBHub"): print(usb.DeviceID) print(usb.description) usb_list.append(usb.description) print(usb_list) return usb_list except Exception as error: print('error', error) get_usb_device() as a result i get this: ['USB Root Hub (USB 3.0)', 'USB Composite

问题 How can I read/write to a device in C++? the device is in /dev/ttyPA1 . I thought about fstream but I can't know if the device has output I can read without blocking the application. My goal is to create and application where you write something into the terminal and it gets sent into /dev/ttyPA1 . If the device has something to write back it will read it from the device and write to screen. If not it will give the user prompt to write to the device again. How can I do this? 回答1: Use open(2),

问题 We have an application(with moderate amount of strings) which we translate to 27+ languages. We make 2 builds of the application. These 2 builds only differ in the name of the package. So basically we first do a build of our application with package name lets say com.android.sad.app and then another one with package name com.android.even.sadder.app . We had the chance to test our application on a great variety of Android devices and we have found out that on some devices like Samsung ACE ,

问题 `Has anyone seen the following error in Datawedge 3.2.4: Error : Scanner : SCN1: Failed to get supported RSM attribute count. Error=a0000012 Error : Scanner : SCN1: Scanning failed. Error : a000001d . If so do you know the cause or fix?` 回答1: One possibility is that your scanner is trying to connect by wireless or Bluetooth to a nearby network. Finale Data Collector operates in disconnected mode, so you don't need any wireless communication on the scanner. You can turn off the scanner's

问题 I'd like to use ScanManager from android.device.ScanManager . But I get the error "cannot resolve symbol 'device'" on the import line. Can somebody tell me what I am missing ? 回答1: Use this library in your gradle file at app level it works out great If Android Studio >= 3.0 implementation 'com.github.DeveloperPaul123:SimpleBluetoothLibrary:1.5.1' Else use compile 'com.github.DeveloperPaul123:SimpleBluetoothLibrary:1.5.1' I have used it to detect Bluetooth Hardware devices and interface

问题 I'd like to use ScanManager from android.device.ScanManager . But I get the error "cannot resolve symbol 'device'" on the import line. Can somebody tell me what I am missing ? 回答1: Use this library in your gradle file at app level it works out great If Android Studio >= 3.0 implementation 'com.github.DeveloperPaul123:SimpleBluetoothLibrary:1.5.1' Else use compile 'com.github.DeveloperPaul123:SimpleBluetoothLibrary:1.5.1' I have used it to detect Bluetooth Hardware devices and interface

问题 I'd like to use ScanManager from android.device.ScanManager . But I get the error "cannot resolve symbol 'device'" on the import line. Can somebody tell me what I am missing ? 回答1: Use this library in your gradle file at app level it works out great If Android Studio >= 3.0 implementation 'com.github.DeveloperPaul123:SimpleBluetoothLibrary:1.5.1' Else use compile 'com.github.DeveloperPaul123:SimpleBluetoothLibrary:1.5.1' I have used it to detect Bluetooth Hardware devices and interface

问题 I'd like to use ScanManager from android.device.ScanManager . But I get the error "cannot resolve symbol 'device'" on the import line. Can somebody tell me what I am missing ? 回答1: Use this library in your gradle file at app level it works out great If Android Studio >= 3.0 implementation 'com.github.DeveloperPaul123:SimpleBluetoothLibrary:1.5.1' Else use compile 'com.github.DeveloperPaul123:SimpleBluetoothLibrary:1.5.1' I have used it to detect Bluetooth Hardware devices and interface

问题 I'd like to use ScanManager from android.device.ScanManager . But I get the error "cannot resolve symbol 'device'" on the import line. Can somebody tell me what I am missing ? 回答1: Use this library in your gradle file at app level it works out great If Android Studio >= 3.0 implementation 'com.github.DeveloperPaul123:SimpleBluetoothLibrary:1.5.1' Else use compile 'com.github.DeveloperPaul123:SimpleBluetoothLibrary:1.5.1' I have used it to detect Bluetooth Hardware devices and interface

问题 I have a probleme with flutter. I install Android Studio and configure that for flutter (install flutter and Dart) but I can't run my app on any device and android studio console returned: Unable to locate a development device; please run 'flutter doctor' for information about installing additional components. and flutter doctor -v : [✓] Flutter (Channel beta, v0.8.2, on Linux, locale en_US.UTF-8) • Flutter version 0.8.2 at /home/mostafa/Dev/Flutter/flutter • Framework revision 5ab9e70727 (4