Why do my PCI-e I/O register reads appear to be cached? Unmasking the Mystery Why Your PCI e I O Register Reads Seem Cached Have you ever encountered a situation where reading a PCI e I O register seems to return a c 3 min read 06-10-2024 48
Device tree override reg value Overriding Device Tree Registry Values A Guide for Embedded Developers Device trees are essential for modern embedded systems providing a structured way to desc 2 min read 05-10-2024 40
DMA Read is working but DMA write is failing Understanding DMA Why DMA Read Works but DMA Write Fails Direct Memory Access DMA is a powerful feature in modern computing that allows hardware devices to comm 3 min read 30-09-2024 51
Wait for interrupt for specific level Understanding Interrupt Handling Waiting for a Specific Level Interrupt Interrupt handling is an essential aspect of embedded systems and low level programming 2 min read 30-09-2024 46
Clone ethernet frame from one interface to another Cloning Ethernet Frames from One Interface to Another When working with network devices there are instances where you may want to clone an Ethernet frame from o 2 min read 29-09-2024 44
Can't assigne file to loop device within docker container Troubleshooting Cant Assign File to Loop Device Within Docker Container When working with Docker containers you might encounter various issues that can complica 3 min read 29-09-2024 46
An alternative to sysfs (/sys/class/gpio) for controlling GPIO An Alternative to sysfs sys class gpio for Controlling GPIO In the world of embedded systems and Linux based operating systems GPIO General Purpose Input Output 3 min read 28-09-2024 48
Is it possible to open a socket on a char device in Linux? Opening a Socket on a Char Device in Linux Is It Possible In the world of Linux programming device files play a crucial role in interacting with hardware A comm 3 min read 26-09-2024 55
Opening of device memory in Green Hills System's Integrity RTOS Opening Device Memory in Green Hills Systems Integrity RTOS When working with real time operating systems RTOS such as Green Hills Systems Integrity RTOS managi 3 min read 24-09-2024 49
DS1343 SPI chip select logic in Linux driver Understanding DS 1343 SPI Chip Select Logic in Linux Driver The DS 1343 is a real time clock RTC that communicates via the Serial Peripheral Interface SPI When 3 min read 23-09-2024 61
Need help to setup rtc-ds1302 in device tree on RaspberryPi Setting Up RTC DS 1302 in Device Tree on Raspberry Pi A Step by Step Guide If you re looking to integrate a Real Time Clock RTC module specifically the DS 1302 3 min read 21-09-2024 78
Is it allowed to allocate spin locks on the stack? Is It Allowed to Allocate Spin Locks on the Stack When it comes to multithreading and concurrent programming one of the common synchronization primitives used i 2 min read 21-09-2024 65
Unknow symbol in linux kernel module Understanding Unknown Symbols in Linux Kernel Modules When working with Linux kernel modules developers occasionally encounter the unknown symbol error This iss 2 min read 19-09-2024 46
UltraZed EV SOM: Interrupt Handler Not Triggering After Stop Command and Restart Ultra Zed EV SOM Resolving Interrupt Handler Issues After Stop Command and Restart Introduction The Ultra Zed EV System On Module SOM is a powerful platform des 3 min read 18-09-2024 49
Connecting display on BeagleBone AI-64 miniDP is not working Troubleshooting the Beagle Bone AI 64 Connecting Displays via Mini DP The Beagle Bone AI 64 is an advanced single board computer designed for machine learning a 3 min read 16-09-2024 51
How to modify Linux system call table in kernel version 6+? How to Modify the Linux System Call Table in Kernel Version 6 In the world of Linux kernel development modifying the system call table can be a pivotal task for 3 min read 15-09-2024 49
ioctl return -1 with errno set to EPERM Why ioctl Returns 1 with errno EPERM Even After Setting File Permissions to 777 Lets delve into the common issue of ioctl returning 1 with errno set to EPERM de 2 min read 07-09-2024 65
Interested in Device Programming. Where to Start From C to Microcontrollers A Beginners Guide to Device Programming Starting with microcontroller programming can seem daunting especially if you re new to elect 2 min read 07-09-2024 66
API to detect usb device Detecting USB Devices and Data Transfer on Linux Many users encounter the need to interact with USB devices on their Linux systems whether its for data transfer 2 min read 07-09-2024 72
Permission denied when trying to write to a block device Permission Denied Error When Writing to a Network Block Device A Troubleshooting Guide Have you ever encountered a Permission denied error while trying to write 2 min read 06-09-2024 65
What is the possible use of dev_set_drvdata and dev_get_drvdata Understanding dev set drvdata and dev get drvdata in Linux Device Drivers In the world of Linux kernel development device drivers play a crucial role in connect 3 min read 06-09-2024 49
What to prefer between `spin_lock_init` and `DEFINE_SPINLOCK` and when? DEFINE SPINLOCK vs spin lock init Which is Right for You When working with spinlocks in the Linux kernel you might encounter two seemingly similar methods for i 2 min read 06-09-2024 46
How can I limit the number of blocks written in a Write_10 command? Mastering USB Flash Drive Writes Limiting Block Transfers with Your LPC 18xx Microcontroller You ve built a slick USB flash drive based on an NXP LPC 18xx micro 2 min read 06-09-2024 60
unbinded USB device get automatically bind on linux Understanding USB Device Binding and Unbinding on Linux When connecting a USB device to a Linux system the operating system needs to bind the device to a driver 2 min read 05-09-2024 78
Get PFN from DMA address (dma_addr_t)? Extracting the PFN from a DMA Address A Deep Dive Understanding the relationship between physical memory and DMA addresses is crucial when working with devices 2 min read 05-09-2024 48