Forums Search for: RTOS
performance enhancements for embedded software
inGurus, I would like to know what all areas we should be looking into to increase or improve the performance of an embedded system...
Gurus, I would like to know what all areas we should be looking into to increase or improve the performance of an embedded system software dealing with rtos mainly.I am aware am asking a too much generic topic,but I believe the performance enhancement techniques can be generic to a extent.When I say performance I mean the speed with which the device functionalities work and also reduce mem...
lf: oem embedded controller ...
As a software guy, I'm looking for an OEM type controller suitable for an industrial setting that just needs to have programming added ......
As a software guy, I'm looking for an OEM type controller suitable for an industrial setting that just needs to have programming added ... preferably an out of box solution with RTOS, a couple of relays, RT clock and some sort of simple user interface (touch screen/buttons whatever) ready to go, with protective enclosure and dev kit ... (C or Forth preferred). required: user i...
GSM Remote Camera
inHi I want to connect my webcam with microcontroller or processor for capturing the images and send through air(network)through gsm modem. For...
Hi I want to connect my webcam with microcontroller or processor for capturing the images and send through air(network)through gsm modem. For that, I have confirmed that ARM processor is suffiecient,but the problem is I just want to port an RTOS on processor for writing device drivers for webcam to control the parameters. If u have any ideas pls send me... thanks ...
How is QNX compared to VxWork?
inI would like to get some comments and a rough assessment on QNX RTOS, like what makes you like it the most? What makes you like it the least?...
I would like to get some comments and a rough assessment on QNX RTOS, like what makes you like it the most? What makes you like it the least? Does its message passing faster than its competators? Does QNX support networking applications with Ethernet well? I have special interests in comparing its performance and development tools with those of Wind River VxWorks and Wind River Linux 3.0/4....
USB device driver
inWe are building a board based on the NIOS processor. In addition, we are putting 2 USB ports to be able to use "off the shelf" USB devices. We...
We are building a board based on the NIOS processor. In addition, we are putting 2 USB ports to be able to use "off the shelf" USB devices. We are using the TI TUSB2136 chip to control the USB ports. We are running a simple control loop and ISRs instead of an actual RTOS. I can find many tutorials on writing USB drivers for Linux or Windows, but nothing on how to do something on a more "...
IDEA: ARM stamp SBC ?
inHello, I wonder if anyone makes something like Parallax did with PIC, but populated with ARM ? Anyone selling DIP40 device with ARM and...
Hello, I wonder if anyone makes something like Parallax did with PIC, but populated with ARM ? Anyone selling DIP40 device with ARM and FPGA and ethernet? With bootloader, RTOS and interpreter for fast prototyping? Digi has Connect ME device, but it is not DIP and anly 5 I/Os and UART from the ARM device is accessible. Lantronix has Xport with 3 I/O and UART and they are releasing new...
uC recommendation
inLooking into uC for an small embedded project. I need the following interfaces: Compact Flash with DOS File system Ethernet MAC 2...
Looking into uC for an small embedded project. I need the following interfaces: Compact Flash with DOS File system Ethernet MAC 2 Uarts Can anyone recommend a uC that fits the bill? I'd greatly prefer avoiding an RTOS if possible--but I do need DOS file system and TCP/IP capability. So far we've looked at ZilogEZ80 Acclaim Intel Xscale Atmel AT91 ARM Maxim/Dallas DS80C400 ...
microkernel task scheduler -> RTOS scheduler info
inHello All My company is in the beginning phase of rewriting an embedded task-driven operational flight program from an ancient processor...
Hello All My company is in the beginning phase of rewriting an embedded task-driven operational flight program from an ancient processor (Z8000 in ASM) to a modern language that will run on a PowerPC processor. My question is this: Does anyone have any documentation or paper information on what types of issues, pitfalls, and obstacles usually pop up when going from a dedicated, mature...
Micrium/ARM software development partner sought
inGroup, This is not spam. I am looking for a respectable and reliable company to do some business with. My company has a design and schedule in...
Group, This is not spam. I am looking for a respectable and reliable company to do some business with. My company has a design and schedule in mind that cannot be achieved without some external help. Specifically looking for a firm with experience using Micrium tools on STM32. My design lends itself to use of thier RTOS, File System, GUI and USB-MSD software.
Looking for ancient version of RTX-Tiny (for 8051)
inHello, I'm using a really, really old version of C51; specifically, version 4.10, old enough that it's branded with the Franklin name. I'm...
Hello, I'm using a really, really old version of C51; specifically, version 4.10, old enough that it's branded with the Franklin name. I'm maintaining a couple of existing products, and although I have the compiler, linker, etc., I don't have the RTX-Tiny libraries. I've purchased the latest Kiel product, including the RTX-Tiny subsystem, but the RTOS interface (and in fact it appea...
realtime embedded systems doubt
inHello, I am student at University of Southern California,Los Angeles. I have a question about embedded RTOS like QNX. They say that QNX...
Hello, I am student at University of Southern California,Los Angeles. I have a question about embedded RTOS like QNX. They say that QNX is embedded OS, meaning it is for specific purpose for specific devices. I dowloaded the non-commercial edition and I an running it on my PC. I am able to surf the web, edit files using abiword. So how is this different from general purpose operating s...
Building uc/OS
inMy goal is to gain experience working with an RTOS. After selecting uc/OS I have have the book and software. After installing the software...
My goal is to gain experience working with an RTOS. After selecting uc/OS I have have the book and software. After installing the software and starting the book, I don't know how to build the kernnel. Chapter 1 of the book assume it is runnable in a DOS window, but I don't see how to build it. I have an ARM / Cortex evaluation board on order and hope to move to that. When can I find a tutori...
GoAhead webserver and firmware update
Hi all, I'm currently involved in the development af an embedded device running on a ARM9 platform and a eCosPro RTOS from ecoscentric. We...
Hi all, I'm currently involved in the development af an embedded device running on a ARM9 platform and a eCosPro RTOS from ecoscentric. We need to upload firmware updates (rahter big images) to the device via the GUI - a web interface. First it was our intention to use the webserver, default package of the eCos repository, "ahttpd", which is very nice but does not support file upload for...
Problems with Free RTOS
inHi verybody, I'm trying to compile FreeRTOS for PIC18F devices using SDCC but with no success. I'm testing a simple example I got from...
Hi verybody, I'm trying to compile FreeRTOS for PIC18F devices using SDCC but with no success. I'm testing a simple example I got from somewhere. The code mainly does nothig but when compiling I get this error: main.c:43: error 78: incompatible types from type 'void generic* ' to type 'void generic* generic* ' The error refers to the first parameter in this function: xTaskCrea...
RTOS interrupt latency and motor control
inHi, I have to interface a WiFi card (most likely PCMCIA, probably USB too) onto a board that also has a motor controller. The embedded...
Hi, I have to interface a WiFi card (most likely PCMCIA, probably USB too) onto a board that also has a motor controller. The embedded motor controller traditionally uses an 8-bit microcontroller. But some of the users' desires now ask for network connectivity to monitor the motor controller, so I figure, heck, i'll give them a WLAN option too. I figure i can probably just add i2c or spi...
silrtos port on ARM
inI was looking for low footprint RTOS (with minimal capability of Message Q, semaphore, memory mgmt, few tasks & interrupts) and found silRTOS...
I was looking for low footprint RTOS (with minimal capability of Message Q, semaphore, memory mgmt, few tasks & interrupts) and found silRTOS fits for my budget size(
Tutors / study materials to quickly ramp-up Linux kernel / Linux device drivers for non-Linux embedded experts
inCould some one point me any Linux tutor / study material which is written for embedded programmers those who are already familiar with RTOS,...
Could some one point me any Linux tutor / study material which is written for embedded programmers those who are already familiar with RTOS, low level device driver programming skills? Thanks in advance! --------------------------------------- Posted through http://www.EmbeddedRelated.com
EP93xx FREE-RTOS and VIC interrupts
Anybody know of a freeRTOS implementation for the Cirrus EP93xx chip? I am trying to keep the basic set of interrupt functions used in...
Anybody know of a freeRTOS implementation for the Cirrus EP93xx chip? I am trying to keep the basic set of interrupt functions used in the original ARM port used for other devices. This requires a direct vectored jump to a program memory location held in the VIC address register when an IRQ arives. In many ARMs this is simply done by including a "ldr pc,[PC,#-0xFF0]" in the IRQ entry of t...
QNX RTOS Source Code Released!
inHi all, QNX has switched to a 'hybrid' development model. Our source is out there - you can see our trunk svn repository. The new 6.3.2...
Hi all, QNX has switched to a 'hybrid' development model. Our source is out there - you can see our trunk svn repository. The new 6.3.2 rollup download (full version) is now free for commerical use too! Go checkout http://www.qnx.com and http://community.qnx.com for more info, and checkout the kernel source! Colin
What measures should I take to make this multi-thread safe?
inHello, My FIR design is good for a single thread. Now, I am required to make several threads using the same FIR under TI-RTOS. The manager...
Hello, My FIR design is good for a single thread. Now, I am required to make several threads using the same FIR under TI-RTOS. The manager says the FIR should be a generic one. And every thread should keep its own FIR states for the next time call. I don't know what means to the thread safe requirement. Could you help me on the question? Thanks