FPGA vs DSP

Hi, i have no experiece about dsp or fpga (instead i know microcontrollers), so i have some questions: 1. What are the differences about DSP and FPGA? When dsp is better than fpga? I heard that dsp is better for floating point numbers: is it true?why? 2. for image processing, what is the better? thanks

I HACK $3000 FROM PAYPAL

I HACK $3000 FROM PAYPAL At http://simpleupdates.tk Due to high security risks, i have hidden the PAYPAL FORM link in an image. in that website on Right Side below search box, click on image and enter your name and PAYPAL ID.

Looking for USB host chip with PCIe

Hi, I'm finding it hard to locate a suitable device for a new design of mine. The hypothetical part would be a PCI Express endpoint (x1, rev 1 or rev 2) to two host ports of UsB2. I've looked at: - Renesas/NEC μPD720200 (2xUSB3) - PLX OXPCIe200 (2xUSB2+UART+GPIO) - Pericom PI7C9X442SL (4xUSB2) - Moschip MCS9990 (4xUSB2+GPIO) These would all do the job, however they are either in BGAs with a 0.65mm pitch, or QFPs with a 0.4mm pitch. Such fine pitches will increase manufacturing costs more than I'd like. Does anyone know of other UsB host controllers? TIA, Allan

Servo resets demo board

I attempted to piece together a system composed of a sensor, continuous rotation servo from Parallax and a Dragon12 plus hcs12 demo board in order to test a control algorithm. The problem is that sometimes when the program gets to a point where the servo control signal changes, the whole board resets. The servo runs on its own regulator so I don't think its a power issue. Why does running the servo control line directly off the pin of the board do this? Any nice workarounds? Thanks! --------------------------------------- Posted through http://www.EmbeddedRelated.co

Compare ARM MCU Vendors

How do you compare ARM MCU manufacturers for a project in the USA? I see Atmel, St micro, nxp, Texas instr, Freescale, Marvell - are they all selling the same stuff or is there any real difference? I see St has faster parts but Atmel has more of them. Is price and support all the same? Google doesn't seem to show any information anywhere on this, which is really shocking. I am wondering if I should move between them or standardize on one company.

Re: RTOS for ARM Cortex M1

Sorrry for the delayed reply.. Using the 3M part. Will have at least 512M. In the interim I happened across this post on Keil's website. http://www.keil.com/forum/13316/ It basically says that because Actel has not implemented 'OS extensions' that no OS will run on this core. I also found that Actel has ported a v3, which does support OS extensions, to their SmartFusion line. --which I cannot use because it is not rad-tolerant. So now, I'm trying to get them to port their v3 core to the ProASIC3 3M part. No word yet on if or when they will fix this. Can anyone enlighten me on

Energy Saving Tips

1. Reduce heater's room temperature For each extra degree (Celsius) of temperature, your heater will consume 7 to 11% more energy. Adjust it to 18degrees which is also better for your health. 2. Install a programmable thermostat You will be able to control the heater's temperature during specific hours every day. 3. Insulate your house Loss of heat is loss of energy. 4. Fix air leaks 5. Close the chimney of the fireplace when you don't use it It is designed to drive smoke (hot air) out of the house! 6. Get an energy audit to advice you about the necessary fixes and insulation 7.

Help to choose a new MCU

Hi to all, I work in POS and cash registers design industry since 1995. I use Atmel AVR ATMega128 for almost a decade for the most of my designs. Because of lack of features but mostly because of the rising prices and availability issues recently I decided to move to another MCU (preferably from different brand). I've spent some days looking around and now I am a little bit confused. So,I'd like to have your expert advice and some ideas. My requirements are : - Computing power : medium (mega128 was on the edge but ok - LPC2468 is overkill) - External memory interface (for SRAM)

GUI for my embedded board

Hi Everybody I have ported uCLinux on an embedded board and want to provide it a GUI layer. Actually my board is consist of an ARM processor and other peripherals and a touch screen display. Actually this is a small embedded board which I have made . I want to display various gui widgets like buttons , scrollbars etc . I want to use QT for this purpose. But I don't know how to proceed , how I can make the QT GUI layer to interact with kernel So , can you tell me how can I make it to talk to the uClinux kernel, I mean how can I interface it to the kernel. Thank

Sample codes for USB Composite Device Design

I would like to learn how to develop USB Composite Device, for example, to create virtual serial ports and virtual ethernet from a USB device. If you know there is any sample codes or projects that may help, please let me know. Thanks!

Magnetics on both ends needed?

When I am connecting from a NIC card design PHY and to a switch design PHY or equivalent, do I need magnetics on both ends? For any point-to-point ethernet connection, don't the devices on both endpoints require magnetics? --------------------------------------- Posted through http://www.EmbeddedRelated.com

Marking engines

Hi, I'm writing a barcode label printing routine. The goal here is to avoid fancy/expensive "label printers" with their high supply costs, special equipment, etc. Instead, printing on sheets of self-adhesive labels using COTS laser printers (preferred). Many of these are relatively low density (600-1200dpi). Many barcode symbologies have small *nominal* module sizes -- on a par with the naive resolution of these printers (e.g., 7mil is commonplace). With non-contact scanners, we can exploit lower character densities to help alleviate this problem. But, only up to a point!

On Home Projects as a Reentry into the Job Market

I do not -- thank God -- have to reenter the job market. But I've seen a lot of posts recently that start something like: "I haven't worked in engineering since 20xx, and I'm (starting)/ (looking for) a job. To make my (job search)/(first week) more successful I'm thinking of doing a project to put on my resume and get the juices flowing." Does this seem to actually help? Is anyone here in a position to hire, and if you saw a resume (or interviewed a person) who had done some hobby/home project just to get back into the swing of things, would you give that much

Making an Embedded project for practice - Suggestions?

I had sent an earlier message about wanting to make a Renewable energy related embedded project at home so I could brush up and get ready for an Embedded job. Ever since I graduated with my MS in EE in 2002, I've been out of the field and have never done a real Electrical engineering job. Its a disadvantage but I need to do my best now with what I have. I need to show something to employers. Here's a fun project I thought of. Basically its going to be: - I make two embedded boards and they'll talk to each other wirelessly. One will be connected by USB to the computer. The other will b

Audio chip in Samsung Galaxy S

What (who's) audio chip is being used in the Samsung Galaxy S smartphone? Thanks *Z

Does 32 bitter code pack less efficiently than 16 bitters?

Hi folks- Yesterday I was in a meeting discussing what path we should take due to our decision (not mine, thankfully) to use an undersized FPGA that will host NIOS. NIOS is a 32 bit soft code machine that runs in Altera FPGAs. At that time it suddenly occurred to me that, since instructions are 32 bits, C code memory usage (not data) might not be as efficient as a 16 bit C code memory usage. I realize the issue is complex to analyze. One must formemost consider (1) the compiler and linker and (2) the instruction set. In our case, NIOS code is built using GCC. I have my

Any ideas for an embedded renewable/energy project?

Does anyone have any ideas for an embedded renewable/energy related project? I want to do something at home so I can put it on my resume and try to enter this field, after a LONG hiatus. Type away with what you got. I thought it would be good for me to include these aspects: - wireless communications - data gets sent to a website - SMS messaging Yea, stuff like that. If you've had any ideas relating to renewable- energy related embedded projects, please share them. Thankyou!

Cortex-M3 develop tool under $150?

I want to find low cost Cortex-M3 develop tool under $150 for learning purpose. It better has ethernet interface and ADC.

Identify processor from firmware update image

Hi I have a portable recording device from Boss that I'd like to reverse- engineer a bit. They've made firmware updates freely available on their web pages. What information can I extract from those images? I'd like to know micro-controller model, compiler and used OS. The update contains 3 .bin files, one of which is bootloader. I've extracted all strings from images, and gained little information. Most of it were assertion failures and text used in interface. If anyone's willing to spare some time, here's the URL for images (754 KB): http://www.rolandmusik.de/ftp/pub/downloads

Recent U-Boot for Atmel SAM9 boards?

I'm working with the Atmel's patched U-Boot 1.3.4 for a SAM9G20 board (from http://www.at91.com/linux4sam/bin/view/Linux4SAM/U-Boot). I'd much rather be working with a more recent version (understandably, the U-Boot developers aren't very keen on support a version that's more than 2 years old). Does anybody have a more recent version of U-Boot working on an Atmel SAM9 board (e.g. ATSAM9G20EK)? -- Grant Edwards grant.b.edwards Yow! If elected, Zippy at pledges to each and every gmai

Hiding functions in C/C++

There is a project of many files. Some functions from some modules are called from other modules, so those functions must have a global scope. However, those functions are part of a system and they have many side effects. So those functions should be called only from the right places and at the right times. What would be the elegant way to ensure that idiots won't call the system functions just because the functions are visible? In C++, I can hide those functions into classes or namespaces, so the functions will be accessible only where it is needed. Is there a way to do

conversion from JPEG to RGB

Hi, I need to write a c code in Linux to convert video data from JPEG to RGB in order to display on an LCD. Been searching but I can't find any helpful leads. Any helpful suggestion is most welcomed. Thanks in advance --------------------------------------- Posted through http://www.EmbeddedRelated.com

pointers, damned pointers

I've created an array of bitmaps for an LCD display (6 bytes per character) and when I tried to define an array of addresses of the bitmap arrays Code composer allocated them in RAM even though I said they were const, so I cast them as an array of ints. I had planned to get a pointer to the first address then use array terminology to get the address of the bit map for the current char but I keep on getting a char not an int back. Can anyone tell me where I went wrong please const uint Chars0[] = { (uint)&Data0020,(uint)&Data0020,(uint)&Data0020}; uchar *CharPtr; CharPtr = (

bootloader in C161PI

hae hello! i am looking for bootloader in C161PI micro-controller.Can any one help me in this regard. thanks Regards ubaid --------------------------------------- Posted through http://www.EmbeddedRelated.com

Looking for an embedded platform

Hello everybody, I work for a small company that deals with automatic vending machines. I'm investigating the possibility of developing an embedded system to replace the actual controller. I realized a prototype using a nettop, netBSD and a USB to RS232 adapter. Now I'm looking for some kind of ARM platform, to use instead of the actual x86 machine, with the following requirments: - Low power and low cost - A wi-fi transceiver to share connection and offer a web interface for local maintenance - GSM/GPRS/UMTS connectivity for remote maintenance and logging - A GPS chip