An embedded system is a computer system designed for specific control functions within a larger system.

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Static IP addressing issue in Ubuntu on BeagleBoneBlack Rev C [on hold]

I have my BBB configured to use a static IP address using the following in the file /etc/network/interfaces: allow-hotplug eth0 iface eth0 inet static address 192.168.0.1 netmask ...
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1answer
79 views

Using a configuration management tool to configure nodes without ssh

I'd like to manage the configuration of several devices running embedded Linux. There is a web server in my environment which has a SOAP interface I can use to get/set all the parameters of each of ...
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1answer
26 views

Qdisc pfifo_fast in linux and IP Precedence

Im using a embedded Linux distribution for a router system. My goal is to prioritize some traffic with minimum delay. I have a WAN interface with a default pfifo_fast qdisc attached to it. I have read ...
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19 views

Embedded servers and Watchdog for Windows

I have this customer that has a lot of embedded server devices out on the field. Now these are running a variation of Windows-systems (WinXP, Win2k, WinEmbedded2009). A few of these units have ...
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30 views

Queuing disciplines are per-interface, what qos is handle with interfaces using same device?

I have read about queuing disciplines here http://lartc.org/. I understand that for instance band 0 of pfifo policy is prioritized over band 2 within same qdisc, but what happen when i have ppp0 and ...
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1answer
52 views

Ssh without password to Embedded read only device

I want to be able to retrieve values from an embedded device every minute. Currently I have a script that does this over ssh but I have to type in the password for the embedded device every time I ...
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1answer
38 views

Manipulating root files in images without being root?

In our environment we have linux developer PCs and several embedded boards. The embedded boards are booted from an image. Those image files should be created/modified on the developer PCs. Mounting is ...
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1answer
26 views

Strange issue on netadapter lantronix matchport bgpro

I'm connected to a switch on a LAN, i've tested my matchport on others network and i've not accused this problem. On this istead i seen a lot of UP and DOWN of eht0 on startup. Someone know something ...
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1answer
41 views

mysql with dom and sd cards loss data

I have a problem with a MySQL application that write on a SD card or a Compact Flash. After a data loss (a power failure, for example), if I try to retrieve the data of my db, it fails and the error ...
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1answer
87 views

How should a HTTP server treat requests that specify a protocol higher than HTTP/1.1?

I have created a HTTPS server from scratch for use in an embedded application. At present it is able to distinguish between HTTP/1.0 and HTTP/1.1 when it receives a request, and it then subsequently ...
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168 views

Mounting main partition read-only and temporary folders as tmpfs

I have a small embedded board PC which uses flash card to boot and I'm running Ubuntu server 12.04. But since flash cards have limited lifetime I would like to mount it as read only and have only some ...
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1answer
227 views

Could an ISP selectively block .png, .jpg, .js, .css and others from internal HTTP server?

This is a bit of a specialist question as it concerns a very small embedded web server as opposed to a conventional web server (e.g. Apache, IIS) and it's more to do with the routing through the ISP. ...
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1answer
605 views

`ssh -NfR` equivalent with dropbear

I want to open a reverse tunnel in background. When using OpenSSH ssh -NfR 9022:127.0.0.1:22 <target> always worked. When I did that with dropbear on my router, it failed like this: # ssh -NfR ...
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2answers
1k views

Making SD card corruption-proof

My embedded linux device uses an SD card for saving certain diagnostics data, far too copious for internal flash. The problem is if the device is switched off unexpectedly, the filesystem (FAT32) on ...
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0answers
138 views

thttpd slow and huge resource usage

I have a thttpd server with php, xml2 and sqlite3 running on an embedded arm linux system. In general the system is working, but my sites are loaded really slow (ca. 20s per site, doesn't matter if ...
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3answers
257 views

Compact Flash mounted Read Only

I have a board, running linux (RedHat, kernel: 2.4.32). The board has been up and running since long time. However suddenly, some errors are being observed in the logs, and the Compact Flash (present ...
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1answer
7k views

Cannot get Motorola MC3190 to associate with WiFi access point

Using the Wireless Fusion management tools for the Symbol / Motorola MC3190, we cannot get the handheld to associate to the WiFi access point. Using the Find WLANs feature in the Fusion software, we ...
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3answers
5k views

OpenVPN performance: how many concurrent clients are possible?

I am evaluating a system for a client where many OpenVPN clients connect to a OpenVPN server. "Many" means 50000 - 1000000. Why do I do that? The clients are distributed embedded systems, each ...
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1answer
1k views

Client not getting address from some DHCP server

I'm working on some embedded devices which should be connected to a large network (hundreds of devices) via ethernet and that should be configured using the DHCP protocol. What I'm experiencing is ...
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1answer
121 views

44pin industrial flash ide on embeded debian freezes after an indefinite period of time [closed]

On an embedded system I have, using a 44 pin transcend industrial flash, after a while I will notice that I cannot read any files or write to the disk. I am using the 3.2.0.* BPO i686 SMP PAE kernel. ...
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2answers
156 views

Https for embedded devices, local addresses

I am trying to add https to the embedded devices I am working on. These devices are generally assigned local ip addresses and so cannot get their own ssl certificates. So essentially my question is ...
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5answers
827 views

Is there an official way to detect an existing DHCP server?

I'm planning a new feature on our product to support a LAN. Since the installation will be done by relatively non-technical people (it's for boats) I was thinking it would be useful to automatically ...
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1answer
749 views

Windows 7 Embedded Standard Offer Remote Assistance Issue

I have run into an interesting issue with Remote Assistance on Windows 7 Embedded Standard. I am able to create a Remote Assistance Invitation and use this to connect from a technician PC, but when I ...
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221 views

Wireshark like app for embeded Windows CE

Greetings Im looking for a standalone wireshark like app that I can run on a embedded Windows CE device in order to debug some network issues. Is anyone aware of such a thing. I know version 5 has ...
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475 views

Setting up access to FTP server and SSH server using hostapd access point on embedded system

I've recently designed the circuit board for an embedded ARM system, and the next step is to work on the software to run on this hardware. I've generated the root file system using Buildroot. I am ...
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4k views

Prevent data corruption on ext4/Linux drive on power loss

I have some embedded boards running American Megatrends bios with embedded linux as the OS. The problem I have is that the industrial flash ide's will be corrupted on power loss. I have them ...
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243 views

Strange UDP/TFTP Problem

My TFTP client only seems to be getting responses from the TFTP server to its RRQ (download requests) if I watch the traffic in wireshark. If I shut down wireshark (running on the TFTP server), the ...
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1answer
80 views

PCI configuration

I would need an help to solve a problem. I work on a system based on CompactPCI platform. The system is composed by: 3U CompactPCI CPU Blades (based on Pentium M processor) 3U CompactPCI ...
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2answers
945 views

Installing embedded pfsense, stuck at boot loader

I am trying to install pfSense embedded image 1.2.3 RC1 onto a CF card. The box looks like it is ready to boot, but gets stuck at "Loading /boot/defaults/loader.conf" followed by "/". Can anyone ...
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230 views

Installing embedded pfsense to 8 gig CF, stuck at boot loader [duplicate]

Possible Duplicate: Installing embedded pfsense, stuck at boot loader I am trying to install pfSense embedded image 1.2.3 RC1 onto a CF card. The box looks like it is ready to boot, but ...
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2answers
251 views

remote network access to LAN devices - VPN/LAN

I have several energy meters (with a web server embedded) distributed in many buildings, all these sensors are connected to the local network so that can be accesed through a browser to see the real ...
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1answer
297 views

Embedded device for deploying network probes

Our environment has a multitude of remote subnets that we monitor by deploying Linux-based probes running various network monitoring software and other handy tools. Currently we're using surplus-ed ...
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743 views

Wiping out user and/or root password in embedded linux

We have a security camera system running an embedded linux. It boots with Lilo as a bootloader and has no tty access once booted. I don't know any username either. SSH/22 is open, but I don't think ...
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2answers
88 views

Disk encryption without cooperation from system

I have a small embedded system that supports fat32. It does not have any encryption options for the files that it saves to a external usb connected disk. Modifying the source to support encryption is ...
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1answer
246 views

ionice or chrt for Bonnie benchmark

I am running Bonnie benchmark on an embedded device and I am getting variable results for every run. I am contemplating using ionice and / or chrt to get around it. Can you suggest which option is ...
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1answer
279 views

embedded linux serial terminal

I have built a custom embedded system using debian 6.0. using /etc/inittab i have made several (8) processes running on different /dev/ttyX terminals, which i can switch between using Alt+FX key ...
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58 views

What could this error mean?

I am having trouble with embedded linux system which keeps outputting this error: libdirac_encoder.so.0: cannot open shared object file: No such file or directory' Any idea what this error means? ...
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1answer
3k views

Our embedded linux system won't recognize a USB Device if it is plugged in before powerup. Suggestions?

We are developing on a small embedded device. This device us a gumstix overo board running OpenEmbedded linux. We have our development almost completely done, and have run into the strangest of bugs ...
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3answers
356 views

Low-power/cost embedded device hardware

I'm new to the embedded device world, but I've got an idea I'd like to try to implement. I found an integrated circuit that will give me the input I want, now I need to find a device to log the data ...
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2answers
745 views

Embedded VoIP (Asterisk) install in home router?

Is it possible to flash an average home wireless router with a new OS that includes an embedded PBX server to route VoIP calls (such as Asterisk)? Does the average $50 router in the living room have ...
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11answers
7k views

What is a good default IP address?

My company makes Ethernet devices. These devices have very little I/O. No keyboard, no video output. When the customer gets the device he must configure it for his network. I'd like to choose an ...
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2answers
3k views

I accidentally disabled the web interface for DD-WRT

I accidentally disabled the web interface for my DD-WRT router, but I can still SSH in. How can I fix it so I can admin with the GUI again?
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3answers
496 views

Does anyone know where I could find a 2 input USB voltage meter?

What we really need is a tiny UPS, of sorts. We'll be hooking up a solar cell and a battery to a single board computer. Currently, that SBC is a custom Pic32 device, and it does it's own UPS and ...
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6answers
581 views

Browser-based Operating System

I have a bunch of touchscreen machines that I want to display a webpage on and have users interact with the webpage via the touchscreen. Right now, this is done with a full-blown OS with a browser set ...
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1answer
263 views

Strip X Window System from OpenRD (Fedora core 8)

I just got myself an OpenRD Client embedded box with an old Fedora 8 on it. Runs like a charm, only problem is that the default install has X on it, which I would like to remove in order to free up ...
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6answers
1k views

Is there a free-embedded SSH solution?

I'm working for an important company which has some severe network policies. I'd like to connect from my work, to my home linux server (mainly because it allows me to monitor my home-automated ...
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2answers
1k views

What is the best linux file system and fs configuration for embedded systems

After experiencing some crash related file system outages (requiring manual fsck and repair, we are looking for the optimum file system and fs config for an embedded linux with HDD or SDD mass ...
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2answers
2k views

Problem IP Forwarding is Dropping Rx Packets on Embedded Linux Network

I have a pc and two embedded linux based systems that I am trying to chain together through IP forwarding. They span two separate local networks. Both networks are wired. I can ping 10.10.10.6 from ...
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3answers
932 views

registering hostname using DHCP

I am working on the development of a network device. When it boots up, I want it to register a domain name on the network so that a customer can easily browse to the webserver interface. Eg. ...
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4answers
168 views

Embedded devices hardware comparison

Not sure if this is a 100% serverfault compliant question, but here goes: I need to choose the hardware for an embedded device I plan to develop and I'm looking for tips. Ideally there'd be a ...