I followed some tutorials that explained how to write Linux kernel modules and I am a bit confused. Even after reading the official "documentation", I have poor understanding of the conce...

How to natively build Windows 11 device drivers for ARM64 on an ARM64 system? Using: Windows 11 21H2 on an ARM64 virtual machine (host: MacBook M1) Visual Studio 17.5.2 Windows Driver Kit 10.0.226...

I wanted to get more details for writing Graphics device drivers and audio device drivers using c++ for Linux box. I am newbie at developing device drivers , Please provide me development/documenta...

Background Hello. I am trying to wrap my head around the relationship between a filesystem (ext2/3 etc), device drivers and device files. I'll lay out my understanding of each term and then my ques...

I'm working on designing a USB peripheral which will occasionally connect to a Windows PC, and transfer a few KB of data in each direction. There will be a custom PC application that controls the d...

I'm trying to tweak the sensitivity of a joystick which does not work correctly with SDL, using the EVIOCSABS call from input.h. I think that the fuzz and flat members of the input_absinfo struct a...

Im not really good at VC++ but does anyone have a sample code to get the rotation speed of disk in a computer. I have been working on detecting SSD drives and one solution from researching all day ...

While understanding each by itself (or maybe not), it looks like I'm far from understanding the practical differences between the two. Per my understanding, a BSP is a package of drivers and config...

I am developing an application windows 10 on a stationary PC. I also have a tablet windows 10 that once connected to the PC via USB not see debugging ( How to make it accessible?

I am newbie in windows driver development. I just want to know , a global variable in a driver will use paged pool memory or non paged pool memory ? Thanks and Regards Navaneeth

I'm writing a Windows library using C++. This library should be able to check if the device driver of a specific device is installed on the system. So I am searching for a way to check if a driver ...

Note: I'm listing this problem as it is today, I'm not opposed to changing the implementation (moving the creation of the class to a common area for example) if it makes things easier... I'm just n...

I'm writing an audio device driver which needs to process device interrupts in real-time. When the CPU enters C3 state, interrupts are delayed, causing problems to the driver. Is there a way for th...

Using device manager a user can explicitly enable/disable a device, as can be seen in the following image. For a given device I want to know if it's currently in a user disabled/enabled state. ...

I want to get RGB values of screen pixels in the most efficient way, using Linux. So I decided to use the framebuffer library in C (fb.h) to access the framebuffer device (/dev/fb0) and read from i...

Why I am not able to read this file. I tried reading this file with cat as : cat /dev/video0 But it says cat: /dev/video0 : invalid arguments Similarly, if I try to use dd as : dd if=/dev/...

If I have a Memory-mapped I/O device, and I want to write to a register for this device located at address 0x16D34, the 0x16D34 address is actually a virtual address, and the CPU will translate it ...

I am trying to test my android application on a samsung s2 phone with android version 4.0.3, I downloaded the usb driver from the official website, but the program does not detect the phone, return...

I have some questions on cache synchronization operations. Invalidate: Before cpu tries to read a portion of memory updated by a device, the corresponding memory needs to be invalidated. Flush: B...

I have a HTC One VX phone and I would like to develop an app for it. I got the SDK, IDE, JDK and everything I need. http://developer.android.com/sdk/index.html I tried to run my app on my phone fr...

I have found devm_kzalloc() and kzalloc() in device driver programmong. But I don't know when/where to use these functions. Can anyone please specify the importance of these functions and their usa...

Which of the GPIO APIs in Linux device driver programming is preferable and in what conditions: gpio_set_value() or gpiod_set_value()? One takes the GPIO desc as the object while other takes the G...

I've installed cyanogenmod on my galaxy 3. When developing in Eclipse, most apps seem to work okay. However, I've written an app that needs to access the gallery and every time I try to access it ...

For university research purposes, I am searching for a specific part of Nexus 6, and Samsung Galaxy S6 source code. Particularly, I am interested in "network" & "storage" driver source codes. I...

I have been tasked to write a device driver for an embedded device which will communicate with the micro controller via the SPI interface. Eventually, the USB interface will be used to download upd...