I want to decode the time format in the kernel logs: <3>[ 107.236115] <3>[ 107.245076] <4>[ 107.521858] <3>[ 107.522098] Is there any way to convert those time stamps in...

I need to find out HID-compliant touch screen(single touch) input data structure(like byte ordering and what should be written in each byte). I have used HID-compliant touchscreen descriptor from M...

I am working on a shell script. I have a pre-built zImage. is it possible to know the kernel version from which this zImage was created? I have tried with the commands updated @ Getting uname info...

If I want to execute a user program (not a kernel module) in Linux kernel space, what options do I have? I have looked at KML(kernel mode linux) but that is specific to IA-32 architecture. I want ...

I'm working on a Linux kernel module for a 2.6.x kernel and I need to view the assembly output, though it's currently being done as a temporary file an deleted afterwords. I'd like to have the asse...

I am looking for a tool which can graphically represent the hardware device tree used in linux kernel. I am trying to understand linux kernel for particular arm chipset. It would be a really ...

I am new to Linux , and I am trying to install AlteraQuartus 2 WEb Edition and NIOS2 EDS to play with Nios2 Processor. However , after installing Quartus and when I am trying to execute jtagconfig...

I am building a Yocto image for Intel Edison. One of the image's components is u-boot with an Edison-specific patch. By default, Edison's UART port is used for u-boot console. I want to disable th...

Goal I want to add a touchscreen driver available in the linux kernel source tree to my Yocto image (The link takes you to goodix.c). I basically need to add it as a kernel module. Solution I follo...

My understanding is that for ARM there are three sources for the kernel boot command line in general: Those given as CONFIG_CMDLINE in the kernel configuration Those passed on by the boot loader (...

I have the following program: #include <iostream> #include <sstream> using namespace std; int main() { //ostringstream s; cout << "cpp test" << endl; return 0;...

I'm trying to run software which needs to get hardware timestamps using ptp. Therefore, I need to have /dev/ptp0 available. I'm running Linux/Ubuntu on a VMWare. Is there a way to make this work o...

What is the minimum amount of RAM required to run Linux kernel on an Embedded device? In Linux-0.11 for 80x86, the minimum RAM required was 2MB to load the kernel data structures and interrupt vect...

I am working to build an own "embeeded linux" with yocto. It is based on the SAMA5D3x-MB + SAMA5D3x-CM(RONETIX) with the SAMA5D35. I have two questions: 1.) changing the device tree I build an im...

i want to disable auto starting for the timesyncd.service at boot up on my embedded linux target running linux image compile with Yocto under my board name, i tried creating systemd_%.bbappend file...

I'm trying to erase a NOR Flash memory with Linux MTD driver in C... I'm confused about the return status from the ioctl(MEMUNLOCK) call which returns an error even if ioctl(MEMERASE) is successfu...

I maintain a custom Yocto meta layer compatible with Dunfell. It supports a Microchip SAMA5D27 processor based board. I have several bbappend files in this layer that apply only to file from the me...

I'm following this tutorial for deploy qml to yocto. I'm using beaglebone black not raspberry but i think it is not important. When i ran cmd "./QmlProject" on beaglebone black , I had an error: Q...

Let's consider the package "virtual/kernel". I would like to know which .bb and .bbappend files are involved in building this package. I know that I can get the package name through: bit...

I wrote a platform driver for a peripheral we developed and would like to expose some configuration options to the sysfs. I have managed to create the appropriate files using attribute structs (see...

There are many references to using i2c_smbus_ functions when developing embedded Linux software to communicate on the I2C bus. When i2c_smbus functions such as i2c_smbus_read_word_data are referenc...

What is mean by embedded system? If a system/machine or product which we are making is for multiple purposes, then can we consider it as an embedded system? Or is it that only a system dedicated f...

I am running code in a loop for multiple iterations on a dedicated CPU with RT priority and want to observe its behaviour over a long time. I found a very strange periodic behaviour of the code. Br...

I'm interested in using the Linux USB composite gadget driver g_multi in an embedded Linux device, for Ethernet-over-USB and serial-over-USB (the Ethernet-over-USB is compiled for RNDIS mode; I'm n...

I am trying to understand how a kernel boots. I am currently trying to port a new kernel to hTC Incredible S VIVO (s710e) device, but I cannot get it to boot. So, I looked into the device's origina...