I am using a microcontroller with a C51 core. I have a fairly timeconsuming and large subroutine that needs to be called every 500ms. An RTOS is not being used. The way I am doing it right now is that I have an existing Timer interrupt of 10 ms. I set a flag after every 50 interrupts that is checked for being true in the main program l...
What is the best way to reset a Pic18 using C code With the HiTech Pic18 C compiler Edit: I am currenlty using void reset() { #asm reset #endasm } but there must be a better way ...
I'm looking at the code for a phase accumulator, and I must be a simpleton because I don't get it. The code is simple enough: Every Clock Tick do: accum = accum + NCO_param; return accum; accum is a 32-bit register. Obviously, at some point it will roll-over. My question really is: How does this relate to the phase? ...
Does anybody know any resources on this subject? I'm developing an embedded application for 2x16 LCD display. Ideally I would like to have a general (display independent) framework, that could be used virtually on any display - one or more segment(s) LED, 1x16, 2x16 LCD, etc. Also would like to learn about general guidelines for such sm...
Hey! I would like to have two applications in my STM32 flash, one is basically a boot and the other the 'main' application. I have figured out how to load each of them into different areas of flash, and after taking a memory dump everything looks like it is in the right place. So when I do a reset it loads the boot, all the boot does a...
Highly embedded (limited code and ram size) projects pose unique challenges for code organization. I have seen quite a few projects with no organization at all. (Mostly by hardware engineers who, in my experience are not typically concerned with non-functional aspects of code.) However, I have been trying to organize my code accordingl...
Hi all, I want to know how events are used in embedded system code. Main intention is to know how exactly event flags are set/reset in code. and how to identify which task is using which event flag and which bits of the flag are getting set/reset by each task. Please put your suggestion or comments about it. Thanks in advance. (ed...
Hello, Does a good library for embedded programming/design/testing and so exist? Something like Safari from O'Reilly? To be more specific, embedded programming like µC ...
I am working on an embedded systems project and have run into an issue of the compiler being programatically embedded in the Paradigm C++ IDE. I would like to be able to automate building. The processor is the AMD186ES. I am not working with the OS - just baremetal stuff. I need to generate real-mode 16-bit 8086 machine code from C++. ...
On an embedded target I use far pointers to access some parts of the memory map. near pointer (without explicitely specifying __near): unsigned int *VariableOnePtr; Pointer to near pointer: unsigned int **VariableOnePtrPtr; far pointer: unsigned int *__far VariableTwoPtr; What is the correct way to declare a pointer to a far point...
Let's say you have a dynamic language (similar to common scripting languages) and want to write a compiler for it. Is it good idea to reserve some bits of a machine word for something like type tags? Especially for microcontrollers and similar devices, is it a good idea? I can think of some advantages like reduced storage for type infor...
Given my background as a generalist, I can cover much of the area from analog electronics to writing simple applications that interface to a RDBMS backend. I currently work in a company that develops hardware to solve industry-specific problems. We have an experienced programmer that have written business apps, video games, and a whole...
can any body tell me the differences between them? ...
In all honesty, I think the answer is "no;" however, I want to get a second opinion. Basically, I need one micro-controller device to send a steady signal to another one, but the communicate between them is using RS232. So I think that I have to create/update the communication messages to get it to do what I want. What do you think? ...
Hey! A quick question about elf file headers, I can't seem to find anything useful on how to add/change fields in the elf header. I'd like to be able to change the magic numbers and to add a build date to the header, and probably a few other things. As I understand it the linker creates the header information, but I don't see anythin...
I'm starting a hobby project in which I would like to have a graphical, touchscreen interface for interacting with a kiosk-like device running on top of Windows XP Embedded. For development of a rich UI experience, I was considering using WPF. However, a number of demonstration videos that I have come across have used Silverlight, whil...
I am trying to get started developing using the .NET Micro Framework but appear to have hit a road block. I am using Visual Studio 2008 and it will not let me install the SDK because I do not have Visual Studio 2005. I downloaded the SDK from this link. I know this is not truly a programming question but it is definitely holding me bac...
We are looking at developing a device with a touch screen and an embedded PC like computer for the user interface. What are the benefits and disadvantages of using flash/flex for this user interface development? One of our goals is to seperate the design (= look and feel) and the functionality of the application to ease the development...
I am a student. I've done an embedded system "home automation" project using GSM and I could succeed. Now I've got to do an academic project, and my brain is blank. Can anyone suggest some new ideas? ...
Hi All, My company is using Python for a relatively simple embedded project. Is anyone else out there using Python on embedded platforms? Overall it's working well for us, quick to develop apps, quick to debug. I like the overall "conciseness" of the language. The only real problem I have in day to day work is that the lack of stati...