When I build an OpenGL application on Windows 10 I have to link to opengl32.lib. I use GLEW for loading OpenGL functions. GLEW internally uses wglGetProcAddress(). opengl32.lib provides support only for OpenGL 1.1. How does opengl32.lib work when wglGetProcAddress() asks for some newer OpenGL functionality? Does it act as a proxy and communicate with a graphics driver, for example OpenGL
Tag: driver
Ethtool Structs elements and what are they. What settings and info defined on them
I am reading driver code from Intel E1000E AND Realtek r1869 driver. I hvae the devices for both, Currently I am studying ethtool_ops. I know Ethtool can be a tool for Long story short, ethtool is a means to display and adjust generic NIC/driver parameters (identification, the number of receive and transmit queues, receive and transmit offloads, you > name
Linux : how to transfer data through USB bulk endpoint of cdc-adm driver from userspace
I am a beginner to Linux drivers and I started with writing an application for a cdc-acm based USB device in linux. Therefore, I have used the cdc_acm driver. The USB device that I am using has 2 Bulk endpoints (read and write) and one interrupts endpoint. Now, my question is whether all these endpoints operate on the same /dev/ttyACM0
Why open() has no ‘fd’ return in linux 1.0?
Since there is no return of ‘fd’, how does it read/write later for? ex: Answer open returns a value in there. The cast-to-void is used to signal the compiler that the return value is being deliberately ignored. The init function is the one where the current thread is prepared to execute the init program in user-space. init will expect the
Linux loading i2c drivers
I have linux 4.4 on my board. I also have two i2c devices with their driver. When I connect first device to board – i see in dmesg that _probe function called. When I don’t connect any device to board – in dmesg i don’t see _probe function. When I connect second device – in dmesg i don’t see _probe
Writing to Linux device driver causes infinite loop
I have been writing a kernel space device driver that can be read from and written to from user space. The open, read, release operations all work perfectly. The problem I am having is with the user-space code that should access the device driver and and write something to it. The user-space program writes to two files: 1) to a
Extracting the PMK from a WiFi client under EAP-PEAP authentication, for analysis on Wireshark
I’m starting a research project related to WiFi, which requires me to analyze the exchange of frames in between a WiFi client and AP during connection setup. Experimental setup: I have a laptop M, capturing WiFi traffic with Wireshark on monitor mode, a device A (running Linux) connecting to a WiFi network via 802.1x authentication, specifically using the EAP-PEAP protocol.
How to create a “fake filesystem” that forwards system calls to my program?
I would like to write a tool that can be used to mount archives such as tar, tgz, zip, 7z, etc. to some directory for as long as it’s running, such that I can then open it with whatever file manager I want. To do this, I would somehow need to make a fake filesystem that forwards system calls such
Custom char device linux module under stock major (like “tty”)
I’m writing my first linux kernel module. It is a standard char device to communicate over a GPIO pin. It works like a charme. It is registered with its device name under /dev and in my own class name under /sys (it has some attributes available for configuration by the host application). My wish is to move my device under
Embedded Qt Mouse Pointer Not Showing Up
I’ve got a bit of an interesting problem here. There are plenty of threads I’ve found where people are working to hide or get rid of a cursor on an embedded Qt GUI…but I’m trying to get a cursor to show up on an embedded Qt GUI. I inherited a project that was ‘finished’ some time ago, and the person