If i replace a single-core processor with a dual-core processor, Will it increase the throughput by two times ? If No, why throughput does not get doubled ?
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 voltage monitoring duties.
I've been tasked with trying to replicate all of its features with off the shelf products... and for the most part I've…
Hi i want to install some Debian distributions (Grip, Crush, Lenny...)
for arm / armel architectures.
www.emdebian.org/
i refer to this guide
www.aurel32.net/info/debian_arm_qemu.php
The Problem i have is that i dont have internet connection with My Linux VM or Qemu i am behind a Proxy. I want to know is there a way where i can dl all…
I need suggestions for a single board computer, with these requirements:
Runs linux
Wifi
(I/O module?)
Does not need much computing power. I'm using it for applications like twittering when the coffee at the office is ready etc. I'd like it to run linux, for easy scripting and a full network stack. (preferably pre-installed)
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 255.255.255.0
network 192.168.0.0
This seems to work ok on boot, but when the ethernet cable is unplugged and then plugged back in, I lose the IP…
Say we've produced a widget for other sites to use, like so:
<iframe src="http://example.com/whatever.php" frameBorder="0" width="200px" height="300px" scrolling="no"></iframe>
The client would like to be able to see within GA who has embedded the thing. Is there some referer information automatically passed that I can…
I am building cuImage. When I try to put in openSSH, I run out of 16M RAM boundary which is set during early kernel turning on MMU, so it wont boot up. Can anyone tell me how to increase that? Inside wrapper, there is a size set to 0x1000000, but it does not help me after I try to increase it. Thanks.
I am a programmer and I have never really dealt with the hardware of anything, only software. I want to start building things that I can control from my computer using programming. My question is are there such devices on the market that have a programmable interface or API?
For example, I want to build an automated window blinds…
I'm using a micro-SD card in an embedded design. The card is connected to a microcontroller using the SPI interface. It worked fine for all cards I've used before, but now my new card will not initialize. The card is a Transcend 2GB micro-SD card (TS2GUSD).
After sending the initial clock train to switch to SPI mode I do the…
My brain is fried, so I thought I would pass this one to the community.
When sending 1 character to my embedded system, it consistently thinks it receives 2 characters. The first received character seems to map to the transmitted character (in some unkown way) and the second received character is always 0xff
Here is what I…
I am putting together an application for OMAP 3530 SoC. This application will run some user interface code on embedded linux and invoke waveform generation code on the DSP. The DSP and Linux sides will interact over DSP/BIOS link.
My questions are:
What is the highest frequency at which my DSP-side code can toggle a GPIO…
I would like to monitor the the context switching behavior in a multi-threaded pthread application.
In other RTOSes(Micro C OS) I have been able to register a context switch callback for each thread in the application, and then log (or toggle a gpio) and watch the thread context switching in real time. This was a…
I am looking for a free static checker for C99 code (including GCC extensions) with the ability to explicitly say "these preprocessor macros are always defined."
I need that last part because I am compiling embedded code for a single target processor. The compiler (Microchip's C32, GCC based) sets a macro based on…
I have a number of files that contain data in a format I am not familiar with. All of the data files begin with the same byte sequence, presumably a file header, and the sequence is "URES". I'm assuming that these files are some kind of resource file, perhaps a collection of data or other files all embedded into…
Is zLib Worth it? Are there other better suited compressors?
I am using an embedded system. Frequently, I have only 3MB of RAM or less available to my application. So I am considering using zlib to compress my buffers. I am concerned about overhead however.
The buffer's average size will be 30kb. This probably…
I have an embedded application where an image scanner sends out a stream of 16-bit pixels that are later assembled to a grayscale image. As I need to both save this data locally and forward it to a network interface, I'd like to compress the data stream to reduce the required storage space and network bandwidth.…
Howdy All,
I've been tasked with localizing an English language ASP.NET MVC 2.0 website into 7 additional languages. I've added resource files to the Views Home App_LocalResources folder:
Example:
Index.resx, Index.es.resx, Index.fr.resx, Index.zh.resx, etc.
I have set the CustomTool to…
It does not need to be a full fledged OS, but at least have multitasking capabilities (i.e. a scheduler).
Please mention what processor architecture it works on.
This is a survey, so exact capabilities are not really important. Think of this as being a place to look at for possibilities when…
I'm using the IE control embedded in an application. Works as advertised. When a user opens a new browser window I intercept the NewWindow2 event and force it into a new tab. However for a certain class of windows I want to allow a popup. Most notably a few windows legacy applications that use…
I have an excel file that I want to embed in my C# assembly. I have changed the build action of the XLSX file to "Embedded Resource".
During runtime, I have to retrieve this XLSX file from the assembly.
Assembly assembly = Assembly.GetExecutingAssembly();
StreamReader sr = new…
I am working on an Embedded Windows CE project and am interested in accessing a USB HID device through one of its USB Host ports. All I really need to read are the raw HID spec packets. On a windows computer, I have a working program using hid.dll, but as far as I have…
In the world of embedded software (firmware) it is fairly common to observe the order of events, take timings and optimise a program by getting it to waggle PIO lines and capturing their behavior on an oscilloscope.
In days gone by it was possible to toggle pins on…
I am looking to add an address book to one of my programs.
For that purpose, I want to have something that is flexible and customizable to the point of allowing me to hook up additional metadata to contacts in it from third parties.
I don't mind paying for a…
Hello all
Some time ago I read a posting on a board where the person was talking poorly about people that have HTML embedded/within their PHP. I do quite a bit of PHP development but I still interleave HTML and PHP in the same document. Is there a better way…
I'm a first year Computer Science student looking to get started with development for micro-controllers. I'd like to use the 8051, as it's common as dirt, and is used frequently in the real world.
During my junior or senior year, I'll be taking a PIC…