The use of Unix in embedded computer systems such as networking equipment, mobile phones, media players, set-top boxes, etc.
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5 views
how to enable java support to buildroot
I'm using buildroot 2012.08 version for building embedded linux. I'm looking for best solution to add java support. Is it possible to do trough buildroot?
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1answer
24 views
What could cause a run time remounting of my /var partition to be read only?
I have a buildroot generated embedded linux system (x-86 geode processor) using an initramfs but with /var and /etc mounted onto a compact flash device using the default mount options specified in ...
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1answer
27 views
/dev/console dynamic redirection
Is it possible to dynamically redirect all data sent to /dev/console into something else (for example - to /dev/null, /dev/tty9 or even /dev/null)?
Of course, it can be done statically via ...
5
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1answer
295 views
Embedded linux LCD not calibrated
I have attached a new LCD to my embedded Linux device and when I run the system I found that it is shifted to the right. (the display starts from the middle of the LCD)
I found 2 frame buffer drivers ...
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1answer
37 views
What does ifup do when “/etc/network/interfaces” has an invalid netmask address?
The interfaces file looks like below:
auto lo
iface lo inet loopback
auto eth0
iface eth0 inet static
address 192.168.0.130
netmask 250.255.255.0
gateway 192.168.0.254
As you can see ...
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2answers
189 views
Adding Buildroot Package
I'm trying to add a package to buildroot, but I'm not having much success. The package I'm trying to add is an autotools package called scew. I've followed the buildroot guidelines about adding ...
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2answers
37 views
embedded linux and powering usb stick
I have a problem where I need to read a usb-stick or a usb keyboard: When I plug in the USB stick or keyboard I can't get power to the device. dmesg says nothing
I tried:
for device in $(ls ...
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0answers
28 views
Creating JFFS2 image
I am working on Embedded Linux, trying to create JFFS2 file system in the host and trying to load it on a NAND device in the target board - Olinuxino a13 wifi using Livesuite. I successfully created a ...
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23 views
What is the memory architecture like in a mobile phone? When we flash an image, where is it exactly being stored? [closed]
First of all, this is the only place where I think I could have asked this question, so excuse me if this question looks out of place here.
Now, I can see there are 3 different types of memory in my ...
4
votes
1answer
47 views
ttyS1/uart1 initialised but not accessible through /dev/ttyS1
I'm not sure at which level I am having a problem.
System is a LeopardBoard DM368 running TI's own SDK / LSP / BusyBox kernel, the core Linux kernel is 2.6.x so using serial_core.c driver model.
By ...
2
votes
1answer
52 views
Know when a memory address is aligned or unaligned
Im getting kernel oops because ppp driver is trying to access to unaligned address (there is a pointer pointing to unaligned address). Im not sure about the meaning of unaligned address. It means not ...
5
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2answers
85 views
Is it possible for a daemon (i.e. background) process to look for key-presses from a USB keyboard?
I'm working on an embedded Linux project where I will be developing a program that will run automatically on bootup and interact with the user via a character display and some sort of button array. ...
2
votes
1answer
890 views
how to re-enable input on a serial console
I have an old router which runs Linux and I'd like to have a serial console on. This used to work fine, but after a firmware update, I can now only get output on the console and cannot give any input ...
2
votes
1answer
44 views
How to custom build debian's busybox?
I'm building an embedded system based on debian 7, and I'd like to make the most out of busybox that comes with debian. The problem is default busybox build in debian seems quite minimal, for example ...
1
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1answer
61 views
What is the easiest way to draw graphics on Linux framebuffer?
I have some embedded Linux ARM chip with LCD display on frame-buffer. I connect to chip with serial console. I can access frame-buffer directly with low-level commands.
However I need to draw some ...
