device

How can I run logcat on multiple devices at the same time? "adb logcat" command gives an error: error: more than one device and emulator levis501 Use the -s option of adb : adb -s <serialnumber> Example C:\Users\lel>adb devices List of devices attached 192.168.198.101:5555 device 0123456789ABCDEF device adb -s 0123456789ABCDEF logcat adb -s 192.168.198.101:5555 logcat You can combine grep whit this, to get all lines that contain it. an example is with System.out Example: adb -s 192.168.198.101:5555 logcat | grep "System.out" I thought it might be useful. I have this script that helps me a lot.

Does anyone know how bash handles sending data through pipes? cat file.txt | tail -20 Does this command print all the contents of file.txt into a buffer, which is then read by tail? Or does this command, say, print the contents of file.txt line by line, and then pause at each line for tail to process, and then ask for more data? The reason I ask is that I'm writing a program on an embedded device that basically performs a sequence of operations on some chunk of data, where the output of one operation is send off as the input of the next operation. I would like to know how linux (bash) handles

I am developing an embedded solution using C and I am working with two USB sensors. If I connect each sensor alone they take this names: Device 1 (I do not know why it takes 6 names...) /dev/ttyACM0 /dev/ttyACM1 /dev/ttyACM2 /dev/ttyACM3 /dev/ttyACM4 /dev/ttyACM5 /dev/ttyACM6 Device 2 /dev/ttyACM0 So when I start as an embedded system and both sensors are connected, the fastest one takes /dev/ACM0 but it not always the same. So, when I try to read device 2 I could be reading device 1... I think that It would be great to change the default names of the sensors. I guess that it is going to be

I am developing an android game application played using bluetooth. While searching for bluetooth device, results contain both mobile devices as well as mac pc/laptops. I would like to list only the mobile devices in my result list. Is it possible to find whether the device detected is mobile device or not? When you have BluetoothDevice you can call getBluetoothClass . Smart phones are expected to have PHONE_SMART value, while computers should have COMPUTER_* values (for example COMPUTER_DESKTOP or COMPUTER_LAPTOP ). 来源： https://stackoverflow.com/questions/5989847/find-type-of-bluetooth-device

In Windows, if I open Device Manager-> right click on the device -> Properties -> Details, I get {Property, Value} pairs. I want to access them in my C++ code in Visual Studio. How do I get it? Thanks, Try SetupDi_ functions,look here for example. HDEVINFO WinDeviceHelper::getDevInfoForClass(QString devClassName,DWORD& dwCount) { //DWORD dwGuids = 0; SetupDiClassGuidsFromNameW( qPrintableW(devClassName), 0, 0, &dwCount ); //emit sSearchStarted(dwGuids); if(dwCount) { GUID* pGuids = new GUID[dwCount]; BOOL success = SetupDiClassGuidsFromNameW( qPrintableW(devClassName), pGuids, dwCount,

Is there a way to get the full audio device name in Windows XP and later? I can use MIXERCAPS but the szPname member will limit to 32 characters (including NULL). For an audio device name of "Microphone (High Definition Audio Device)", I only get back "Microphone (High Definition Aud". This is due to MAXPNAMELEN being defined to 32. I have tried redefining it to a larger number to no effect. Here is the code I am using: MIXERCAPS mc; ZeroMemory( &mc, sizeof(MIXERCAPS) ); mm = mixerGetDevCaps( reinterpret_cast<UINT_PTR>(m_hMixer), &mc, sizeof(MIXERCAPS) ); I saw this question , but it