Embedded I2C Contract Job
Taking bids for writing of firmware such that 10 bit readings from 8
capacitors can be taken by each or any of 5 AD7143 Capacitance to Digital
Converters, sent to a PIC18F2455 (currently onboard a UBW BitWhacker),
which can be easily and quickly read by a computer via USB.
All of the AD7143 CDCs have the same 7 bit fixed address, so they will each
need their own input port on the PIC. I'd like to keep it on the UBW if
possible for easier prototyping. Please write with any questions or for
more specifics and relevant spec sheets.
------------------------------------...Omnivision OV7640 SCCB (I2C?) bus problem
I am hoping someone can assist me with the SCCB (I2C?) bus of an
Omnivision OV7640 image sensor.
I am unable to get the OV7640 to respond to commands on the SCCB bus.
I have connected the OV7640 to a SRAM, and feed VSYNC and HREF to an
Altera 7032S CPLD which controls and address counter and the SRAM. I
can successfully capture an image frame, and transfer it (slowly) over
RS232 to a PC.
If I treat each pixel as a luminance value, I get a good monochrome
photograph, 640 x 480.
I find this surprising, since I was expecting bayer encoded data.
Looking at (on the data...Embedding Python in an embedded system
I'm looking at embedding python in a little embedded system. The device
(a linksys wrt54g router, popular hack object since it runs linux), has
limited resources. Just 4MB flash and 16MB memory.
I'm interested in Python because I need to be more agile with developing
an application for this platform. Currently I am using C++ but it takes
just too much time to develop/debug code.
Does anyone have experience doing something like this?
Stefan Arentz wrote:
> I'm looking at embedding python in a little embedded system. The device
> (a linksys wr...ARCH
I'm trying to estimate a VAR model of two equations.
- the portmanteau test shows that my residuals are cross correlated
- one of my equation exihibit an ARCH pattern
I cannot use the AUTOREG procedure as I have a system of equations to
I cannot use the VARMAX procedure because it is not possible to impose
an ARCH structure for one equation only.
I guess I should opt for the proc MODEL.
I think I can program it.
The problem here is how to check that my model is the right one ? Do
you know how to generated the diagnotic checks given by the Pro c
VARMAX with the proc Mo...Embedded BerkeleyDB vs. Embedded MySQL
Does any one know Embedded Berkeleydb's performance vs. Embeded
MySQL's. ? Any idea would help.
Thanks a lot.
...Embedded vs. Non-embedded Tests
As far as I know, Facets is the only large project that uses embedded
unit tests. The tests are housed in block comments, eg.
I have a command line tool that can run the embedded test directly.
For deployment, I have another tool that extracts all the embedded
tests and copies them to stand-alone test/ files so others can run
them. It works fairly well. And the advantage of course is that the
unit tests are right there with the libs they test.
However, considering that just about everyone else is putting units
test in their on test files, I'm wondering if I...SES-2 over I2C == multimaster I2C?
while investigating the theoretical background of some recent
SuperMicro SAS backplanes with the AMI MG9072 enclosure management
processor, I've ended up with the following unanswered question:
it would seem that "enclosure management over I2C", as specified in the
SATA 2.5 spec, implies the use of multi-master I2C. The host PC or the
RAID controller effectively sends a SCSI command encapsulated in I2C to
the enclosure backplane processor (I2C write transaction), then the
backplane processor and the host machine switch roles on the I2C bus,
and the backp...embedding
How do we embed stuf like blogs or video into our websites.
On 14 Aug 2010, teak <firstname.lastname@example.org> wrote:
> How do we embed stuf like blogs or video into our websites.
Read-up on it, then do it.
> How do we embed stuf like blogs or video into our websites.
That question is rather vague. Can you describe what it is that you're
actually trying to do in a bit more detail?
In article <i49m9v$cn7$1@n...embeded
Has anybody experience to develop embeded application in Oberon?
Or may be place links here please.
> Has anybody experience to develop embeded application in Oberon?
> Or may be place links here please.
www.xo2.org, there are some nice little robots here and there running
with this embedded version of oberon.
Sjur J. Vestli
Hi, I'm having a bit of trouble trying to script my application using
I have created classes that I can use in C++ and I have created Python
objects from those classes using SWIG and they're working just
perfectly. However, I have no idea on how I can actually pass these
back and forth when I call my scripts from C++. Ideas anybody?
...is Embedded Matlab (Embedded C) dependent on MCR
I was reading about Embedded C and the features that it provides. However, I am wondering, will the C code generated still be dependent on Matlab software to run? i.e Could I use the C code generated and run it on a different machine that does not have Matlab installed?
"S " <email@example.com> wrote in message <firstname.lastname@example.org>...
> I was reading about Embedded C and the features that it provides. However, I am wondering, will the C code generated still be dependent on Matlab software to run? i.e Could I use the C c...Embedded
You see i have a JTextPane and in this JTextPane there are
I embbeded 3 JTextPanes in this 1 JTextPane. Let's a say
how can i get the JTextPane which the user clicks with the mouse.
ps. You guys can leave out the mouse listener part
Suppose you have requirements for a basic embedded system such
as a few digital I/O, analog I/O, RSxxx communication links,
alphanumeric LCD, etc.
The usual way is to select a microcontroller with the required
I/O and based on the complexity some amount of RAM and ROM.
You often choose a microcontroller from a family you are
familiar with. You then select an OS or no OS, depending
on the requirements.
If you decide to write the code in Ada, how do you know
there will be a compiler that will target the microcontroller?
Do you have to ask every vendor or is there a list of
supported CPU for ...firmware, embedded software, embedded system concepts
I want to understand more on firmware, embedded software,
and embedded systems. My understanding is that firmware
has programming instructions burned in a chip, which is a ROM?
And once we burns it, the information is read only.
For example, the chip inside smart card is a firmware??
Embedded software consists of more than one firmware??
Embedded system is a computer system in large hardware devices, and
it consists of embedded software? For example, microwave,
network devices, etc?
I tried to find more information on the web, but couldn't find clear
explainations on the basic conce...I2C
i am working with philips microcontroller LPC935 which is to be
attached to I2C port expander.
i have to write a code for this .As my device is configured as master
receiver to read (i have to read only) the value or status of port
my question is that : Do i need to check for all 25 states of I2C bus
from status register for my operation ?
> i am working with philips microcontroller LPC935 which is to be
> attached to I2C port expander.
> i have to write a code for this .As my device is configured as master
> receiver to read (i have to read onl...Distiller 6 fonts embedded or subset embedded
I have a problem with fonts in Acrobat. It works just fine but one thing is
If a customer sent me a PDF and the proofs come back to me with just a
little typo-change, I cant change it. I tried with Pitstop and Acrobats own
tools for this. (touch-up).
Everytime (except for Arial and more common types) Acrobat says that the
font can not be changed, unless I put the font in question in my system. It
doesnt matter if I choose to distill with all of the fonts and uncheck the
What am I doing wrong? Is there a way around this?
Its really embarresing to ask th...embedding
I have been trying to transform the vector x(1:n) in a matrix whit this
x(1:n-E)' x(2:n-(E-1))'........x(E:n)' how does it possible to write in
matlab code i have been trying
E = input('embedding dimension')
l=length(x);%x(n)=vector that i want embedding
but did not go
> I have been trying to transform the vector x(1:n) in a matrix whit
> this columns
> x(1:n-E)' x(2:n-(E-1))'........x(E:n)' how does it possible to write
> in matlab code i ...embedding?
I've written some simulators in C that use Tcl and custom commands as an
embedded debugger language.
Tcl works OK, but I don't like the language very well. It's simple, but
not very elegant Ruby looks like a much better language.
Is there any documentation or example code showing embedding Ruby in
a C program? A Google search turns up some C++ stuff, but it didn't
seem very helpful.
Is it possible to create multiple independent Ruby interpreter contexts?
[If you want to reply by private email, please remove the obvious
spam-proofing from my email address.]
...[News] More Support for Embedded Linux from Embedded Alley
-----BEGIN PGP SIGNED MESSAGE-----
Linux SDK straddles DIY, commercial approaches
,----[ Quote ]
| Linux professional services and consulting firm Embedded Alley (EA) is edging
| into the embedded Linux tools business with its own software development kit
| (SDK). EA's "Embedded Alley Development System for Linux-based Devices"
| combines open-source software and services, and "facilitates build and
| integration of in-house and third-party commercial software," says EA.
Linux devices gain m...Embedded
Free videos, humor, comedy,extreme clips, features to upload, share,
rate and watch videos,comment on your favorites
...UK Embedded Masterclass
just a quick note to let you know that we are running another Embedded
Masterclass - it is in London and but to be repeated in Bristol (8th
and 13th May). For those of you that have never attended, its a non-
sales forum to learn about the latest and greatest stuff. This year
will include presentations on 'realtime' linux, farming dsp's in high
end systems, software timing analysis, time triggered design... the
presentation ate technical.. so no sales pitch. There are over 20
vendor engineers with tabletops for demo's and discussions.
Also - there is an Embedde...Devantech USB-I2C R286-USB-I2C board
I bought the Devantech USB-I2C R286-USB-I2C board. The Devantech USB-
I2C module is a low cost USB to I2C module, with a simple command set,
and interfacing to any I2C device. I'm trying to set the I2C interface
between my I2C board and R286-USB-I2C?
Also I do need a help in User Interface development for Microsoft
Windows. It should be similar to your USB_I2C_SRF08.exe software but
Thanks in advanced for any help,
...RTOS/Embeded Linux / Driver Embedded Senior Engineer
RTOS/Embeded Linux / Driver Embedded Senior Engineer
Job Category: Engineering - Embedded
City: Richardson, Texas
The strong Embedded SWE will be a member of the embeded software team.
Embedded C Programming
Structured software development
Interrupts, multithreading, state machines
Working with legacy code
Familiarity with the following is desired:
MIPS and ARM
Real-time operating systems
VOIP, TCP and Kernal software development
BSEE/CS or equivalent and 10+ years of experience in system software
des...I2C high speed mode and I2C range extending
Hi - are there any microcontrollers out there that support I2C high
speed mode? (3.4Mbps - defined in the I=B2C-bus specification, Version
2=2E0). I can't find any that do. I can't even find any NXP parts that
Also - has anybody ever used an I2C bus extender chip? (ie the NXP
P82B715). What was your experience with it? Are there any that can
handle higher speeds that that one? (1Mbps+)
> Hi - are there any microcontrollers out there that support I2C high
> speed mode? (3.4Mbps - defined in the I�C-bus specification, Version
> 2.0). I ca...