The kernel manages drivers, file systems, inter-process communication, and interrupts.
1
vote
0answers
59 views
No image file after make (3.6 kernel compiling)
Overview: I wanted to compile 3.6.11+ linux kernel for my raspberry, after the make command, there were no image files in arch/arm/boot.
What I've done:
1 Download the linux code from ...
1
vote
2answers
71 views
top/htop not showing CPU usage of kernel processes
I'm trying to improve FPS from a USB webcam. Supposedly I should be able to use htop to show where the bottleneck is, since top won't show kernel processes such as time spent waiting for disk access. ...
1
vote
0answers
32 views
How can I read and write data to a Character Device File in Linux with PHP?
I'm trying to read and write to modules on the I2C bus on a Raspberry Pi using PHP. I'm using fopen() and fskeek().
Below is the code I've been trying to use to read data coming in from the physical ...
1
vote
0answers
121 views
How do I install webcam firmware on the Raspberry Pi?
I want my Raspberry PI to be able to use this cheap webcam I bought from China.
Identified as
17a1:0128 TASCORP
After quite a bit of searching I found a post from someone who had got it to ...
2
votes
2answers
294 views
Raspbian source code
I´m using Raspbian on RaspBerry Pi and it´s working ok, but now I want to modify the distro according to my needs.
I know the source for the kernel is found in kernel.org, but I haven't been able to ...
2
votes
1answer
86 views
Schedule periodical processes
I have a project that I´ll be using RaspBerry Pi to make a controller for process control.
To do that I need to schedule processes periodically. Does anyone know how I could do that? So I have to ...
2
votes
2answers
77 views
Install Linux Kernel
How can I compile a basic linux kernel on Rpi, or is it possible in a any way?
I want a very basic linux with nothing on it but just Linux.
Let me know if there are any alternatives or suggestions.
0
votes
1answer
75 views
Raspbian missing modules in lsmod output
when I type lsmod I get the output below. But I am missing all the other but the sound modules. Why are no other modules shown?
I am using the latest Raspbian release (12/16/12)
root@raspberrypi:~# ...
0
votes
2answers
1k views
Kernel panic, unable to mount root fs on unknown-block after restart
My Raspberry Pi has been hosting a small site from home for a few days, and everything was working fine.
It's completely headless, so I use SSH for everything.
This morning however when I woke up, I ...
2
votes
1answer
292 views
Bare Metal Assembly/C(++) Programming
I'm trying to make a small os on my Raspberry Pi.
I have good assembly and strong c/c++ knowledges but I need some help.
For my first experiments I worked with Qemu and it's serial output but now I ...
5
votes
2answers
5k views
How do I upgrade Raspbian?
I have my RPi setup how I want, but I have an older version than what is currently available (2012-10-28-wheezy-raspbian.zip). How do I upgrade the kernel, firmware, etc?
I have upgraded some this ...
2
votes
0answers
2k views
how to mount LCD/TFT screen on raspberry pi
Possible Duplicate
Raspberry pi has an on-board DSI connector, If I buy an LCD or TFT or touch screen which has the DSI connector, could I mount it on the RPI? Does it require any additional firmware ...
3
votes
2answers
394 views
Multiplexing 4-digit 7-segment display is flickering
I connected a 4-digit 7-segment display to the GPIO-port. It uses 8 ports for the LEDs and 4 ports for multiplexing via PNP-transistors. It is running so far with a loop written in C program:
...
2
votes
0answers
418 views
raspberry pi booting failed on custom kernel
hello I have compiled my custom kernel and pack initramfs into it. I have created two partition fat32 and ext3. fat32 contains bootloaders and kernel and ext3 contains rootfs. I have made a raw disk ...
7
votes
2answers
2k views
building kernel image (.img) including ramdisk
I have build my Linux kernel (3.0.1) for my raspberry pi with those following steps.
1. Downloading kernel source
2. tar xvf source.tar.bz2
3. downloading arm cross compilation tool.
4. tar xvf ...
