embedded

How does one create threads that run in parallel while programming PIC18 , since there is no OS? Don't use threads, use an event loop. The PIC18 is a small processor and an event loop based style means you don't have to keep many deep stacks hanging around. You need to write your code in terms of the event loop, but that is probably reasonable. If you do have some long running tasks, use timers are different interrupt priority levels to allow higher priority event loops to preempt lower priority event loops, and put appropriate types of work into the appropriate event queue. You could try

We are trying to support Java enviroment on our embedded platform (700 MHz MIPS 74K , 128-256 MB memory). After reading this article and googling a bit, I came up with the shorted list: Java ME from Sun Kaffe Jbed Perc HP Chai VM PhoneME 　- seems the most promising one IBM WEME (Thanks to Thorbjørn Ravn Andersen) Aplix JBlend (Thanks to QuickRecipesOnSymbian) I was quite new to Java and its runtime enviroment. What do you recommend for a Java VM running on MIPS 74K? You might want to look at this too http://www.sun.com/software/jpe/es/index.xml Oracle offers engineering services for Java ME

I am implementing BFSK frequency hopping communication system on a DSP processor. It was suggested by some of the forum members to use Goertzel algorithm for the demodulation of frequency hopping at specific frequencies. I have tried implementing the goertzel algorithm in C. the code is follows: float goertzel(int numSamples,int TARGET_FREQUENCY,int SAMPLING_RATE, float* data) { int k,i; float floatnumSamples; float omega,sine,cosine,coeff,q0,q1,q2,result,real,imag; floatnumSamples = (float) numSamples; k = (int) (0.5 + ((floatnumSamples * TARGET_FREQUENCY) / SAMPLING_RATE)); omega = (2.0 * M

I am developing a Java Desktop Application and want a light database that can be used with Hibernate and that can be packed with an application. I was going to use Derby database. It's size is near 2 MB. But before that I wanted to have views of experts on SO. Will it work with Hibernate ? Actually, I am new to Hibernate and was studying that it requires a Dialect for a database so Is Hibernate has dialect for Derby ? Pascal Thivent JavaDB (Sun's supported distribution of the open source Apache Derby), HSQLDB (not very active) and H2 (the successor of HSQLDB ) are all 100% Java embeddable

I'm after a very tiny XML parser for an embedded project. It needs to compile down to 10-15k, doesn't need to validate, and needs to be simple and portable. karlphillip I was able to tweak the compilation flags of the following XML parser libraries for C, and cut down more than 50% of their size on my Ubuntu machine. Mini-XML is the only one close to what you requested: Mini-XML (36K) Expat (124K) RXP (184K) There's a good discussion here: C XML library for Embedded Systems I was searching for one recently and I found SimpleXML ( http://simplexml.sourceforge.net/ ) and the slightly larger

I have an embedded project using a STM32F103 (ARM Cortex M3), it is getting a occasionally getting hard fault in release mode. As part of recovery, I would like to retrieve the PC value from before the hard fault and store it for later debugging in the battery backed region. How would I determine the value of the program counter at the point of the hard fault? Obviously, the PC is now set to its location within the hardfault interrupt. Where should I look? It there an address for the normal mode register bank? Thanks! Cortex-M3 uses a quite different model of exception handling from the

I'm curious to see how popular the alternatives to C are in the embedded developer world e.g. Ada... I've only ever used C (with a little bit of assembler), but then my targets have very limited resources. Is there a move else where in this space to something else? What is winning the ware in set top boxes? If !C what was the underlying reason? Compiler support for target Trace \ static analysis tools other... Thanks. Forth is quite popular for embedded development. Also, while Smalltalk is probably not popular in the embedded community, embedded development is definitely popular in the