Semaphore services in embedded rtos

Started by Banh_2000 in comp.arch.embedded4 years ago 2 replies

I am looking for information how the semaphores work in embedded rtos like vxworks or integrity. Is there a minimum standards services required?...

I am looking for information how the semaphores work in embedded rtos like vxworks or integrity. Is there a minimum standards services required? Is there a standard ways for a task to wait in a semaphore or being waking up? When a semaphore is released, will all waiting tasks transferred to the ready queue?


Difference between Events and Signals wrt Interprocess Communication in RTOS

Started by ssubbarayan in comp.arch.embedded14 years ago 29 replies

Dear all, I am not aware of the exact difference between an event and a signal.I was under impression what was available as events in other...

Dear all, I am not aware of the exact difference between an event and a signal.I was under impression what was available as events in other RTOS is available as Signals with Vxworks.Can you please elaborate me the difference between the two or point me to some links where I can get the difference between the two? Advanced thanks for your replys, Regards, s.subbarayan


Web services in an embedded environment

Started by Default User in comp.arch.embedded12 years ago 4 replies

I work in software research and developement in the aerospace industry. We're assisting a project where they are interested in looking at...

I work in software research and developement in the aerospace industry. We're assisting a project where they are interested in looking at web services in an embedded system. This would most likely be WSDL/XML/SOAP. While there would be fairly powerful processing to an extent, it's still a resource-constrained environment, running on an RTOS (I think VxWorks). In particular they are concer...


Quantum Framework ? Or something else?

Started by Baron Samedi in comp.arch.embedded12 years ago

Looking for something like Quantum Framework for telecoms software development. Preferably C++, rather than C, with a good FSM base class....

Looking for something like Quantum Framework for telecoms software development. Preferably C++, rather than C, with a good FSM base class. Should abstract the o/s, making ports from VxWorks to Symbian, etc simple (and also easing PC based unit test). Good trace logging a must, error handling and memory pools a bonus. QF has much of this. Doe anyone approve or disapprove of it? Can anyon...


How is QNX compared to VxWork?

Started by Like2Learn in comp.arch.embedded8 years ago 3 replies

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?...

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....


Regarding Location monitors and MVME5100.What exactly is a "LOCATION MONITOR?"

Started by ssubbarayan in comp.arch.embedded14 years ago 5 replies

Dear all, Can some one explain me what exactly is meant by "LOCATION MONITORS?"I have come across this term often when ever theres...

Dear all, Can some one explain me what exactly is meant by "LOCATION MONITORS?"I have come across this term often when ever theres a reference to the Motorola processors and MVME5100.Whats the purpose of this location monitors?While working with Vxworks also in the BSP I have come across LOCATION MONITORS but never got an oppurtunity to work in it.Is this available on our normal X86 proce...


Seeking Operating System abstraction Layer

Started by Baron Samedi in comp.arch.embedded11 years ago 25 replies

hi, I am seeking an Operating System Abstraction Layer which will easily let me port my code to Windows, Linux and VxWorks. It...

hi, I am seeking an Operating System Abstraction Layer which will easily let me port my code to Windows, Linux and VxWorks. It should preferably be free, or at least cheap. After lots of goggling, the only thing that looks anywhere near it to it is the old NASA OSAL, but that is incomplete and seems to be abandoned (even email is bouncing) . Does anyone know of anything which fits t...


makeSymTbl filters required symbols

Started by Anonymous in comp.arch.embedded11 years ago

I am using VxWorks 5.5 with a BSP for the 5307 Coldfire CPU, and the Diab 4.4 compiler. The problem is this: The makeSymTbl.tcl script...

I am using VxWorks 5.5 with a BSP for the 5307 Coldfire CPU, and the Diab 4.4 compiler. The problem is this: The makeSymTbl.tcl script filters symbols that do not begin with an underscore =93_=94. This removes symbols from the symbol table such as =91dbmul=92 and =91fltused=92 found in libdcc.a., libcfp.a, and/or libimpfp.a. When creating a dynamically loadable module (.out), the load...


Reg : tsmPollTask

Started by Ganesh Vasudevan in comp.arch.embedded13 years ago 2 replies

Hi, I am new to vxWorks and i am working on Board that has got mpc 8250 and mpc 8245. 8245 boots using the shared memory and a PCI bus is...

Hi, I am new to vxWorks and i am working on Board that has got mpc 8250 and mpc 8245. 8245 boots using the shared memory and a PCI bus is configured. When i see the 8245 shell the idle task is "tsmPollTask" and is taking most of the CPU. Can any bosy tell me what this task does and is there any way i can change the behaviuor of this task. Thanks in advance. Regards, Ganesh ...


"What time is it?" aksed the microcontroller

Started by Anonymous in comp.arch.embedded15 years ago 22 replies

Assume that we have a group of computers. Some of them are PCs and others are small microcontroller boards of different types. Some of the PCs...

Assume that we have a group of computers. Some of them are PCs and others are small microcontroller boards of different types. Some of the PCs running Linux and others running Windows, vxWorks or QNX. Microcontroller boards have no operating system but some embedded program that we are going to provide. Our mission is "some how" synchronize their time as accurate as possible. What we are g...


who can give me a link?

Started by insistedsearch in comp.arch.embedded11 years ago 2 replies

I want to download the vxwork6.6.Someone give me a...

I want to download the vxwork6.6.Someone give me a link(ftp:// ftp.windriver.speedera.net/ftp.windriver/internal/eval/vxworks-6.6/CDR- R133467.1-1-00.zip),but it is Unavailable.who can give me a available link?Thank you!


Newbie to RTOS ; need some sample code

Started by Simone Mehta in comp.arch.embedded15 years ago 1 reply

Hi RTOSians, I am a newbie to the world of RTOS programming( vxworks,psos ). I came to know from one post here that there is some code shipped...

Hi RTOSians, I am a newbie to the world of RTOS programming( vxworks,psos ). I came to know from one post here that there is some code shipped with psos which is a good place to start for learning. I wanted to compile this code on our board here. I donot have access to this code. we have psos and arm combo here. If anybody has these examples please pass it on to me, I have enquired in my ...


cPCI compatibility questions

Started by Kevin J. Phillips in comp.arch.embedded13 years ago 1 reply

I'm a software person that is in over my head. I have to select a 1553 interface card for a 6U cPCI chassis that has a PowerPC board running...

I'm a software person that is in over my head. I have to select a 1553 interface card for a 6U cPCI chassis that has a PowerPC board running vxWorks. Unfortunately, I don't know anything about cPCI, except for some reading I've done today. My problem is that I don't know what I need to check so I can be reasonably certain that a cPCI interface card will be compatible with our chassis & pr...


Ethernet programming question

Started by sburck in comp.arch.embedded7 years ago 16 replies

I have a system based on the Freescale MPC5200B, running VxWorks, which has a strange problem. The system has a set of self tests which opens a...

I have a system based on the Freescale MPC5200B, running VxWorks, which has a strange problem. The system has a set of self tests which opens a socket server to the world. There is some PC software which opens a socket on the server for communication, and then the user on the PC can run batteries of tests on the card. The system also has a firmware uploader. It works in the opposite way ...


Software reset for compact flash

Started by Michael R. Kesti in comp.arch.embedded11 years ago 1 reply

We (my fellow employees and I) have been working on an MPC860-based target that is not unlike some we've developed in the past except that we...

We (my fellow employees and I) have been working on an MPC860-based target that is not unlike some we've developed in the past except that we have added a PCMCIA slot in which we use compact flash (CF) cards. The PCMCIA section design was based on Wind River's wrMdpPro8xx reference board and, being a VxWorks shop, we used the pccardlib.c and sys8xxPcmcia.c modules from wrMdpPro8xx BSP as our ...


Regarding calculation of free memory

Started by ssubbarayan in comp.arch.embedded14 years ago 62 replies

Gurus, I was just wondering what could be the best possible way to calculate free memory while our code is running in SDRAM.I have used vxworks...

Gurus, I was just wondering what could be the best possible way to calculate free memory while our code is running in SDRAM.I have used vxworks and it uses a approach to calculate the free memory as follows: Fill up the entire stack with 0xeeeee and then when you start using the stack,if at all a particular address in memory is used,the value of 0xeeeee in that location should be overwritten...


USB driver for Philips ISP1362

Started by David in comp.arch.embedded14 years ago 1 reply

Hi all, I have a board with two Philips ISP1362 USB controllers. We want to use one of them in host mode and the other one in peripheral mode....

Hi all, I have a board with two Philips ISP1362 USB controllers. We want to use one of them in host mode and the other one in peripheral mode. We do not need to have the OTG functionality. VxWorks 6.2 does not support this chip directly, but we hope that we can modify the OHCD driver to work with the ISP1362 chip. Has anybody already tried to do this? Thanks in advance David


intermittent sysACE hang on ML310

Started by Bo in comp.arch.embedded14 years ago 1 reply

After adding Ethernet core (full) to our ML310 design, (with an Intel development PHY board connected through spare GPIO pins on PM1), we are...

After adding Ethernet core (full) to our ML310 design, (with an Intel development PHY board connected through spare GPIO pins on PM1), we are seeing intermittent sysACE / Compact Flash lockups in the vxWorks boot. Through many toils and snares, we have determined that when this lockup occurs, the actual hang is occurring on the line: while (XSysAce_Lock(AcePtr, XFALSE) != XST_SUCCESS);...


Self booting systems with out bootloader?!!!

Started by s.subbarayan in comp.arch.embedded15 years ago 5 replies

Dear all, I was going through vxworks6.0 kernel programmers manual.I came across the section on kernel and found this following...

Dear all, I was going through vxworks6.0 kernel programmers manual.I came across the section on kernel and found this following sentence regarding the various boot images possibles with vxworks6.0 version: "Self-booting VxWorks image can also be created, which do not require a boot loader." After this sentence a few pages down,I found the following line again: "For self-booting imag...


Common software architecture for embedded systems

Started by Baron Samedi in comp.arch.embedded12 years ago 14 replies

I am trying to come up with an overview of a common software architecture, which I would like to keep reasonably generic. That being said, it is...

I am trying to come up with an overview of a common software architecture, which I would like to keep reasonably generic. That being said, it is intended for embedded systems, specifically mobile (cell) 'phones. Irrespective of the actual software project, there are certain common functionalities which should be present in most systems. The operating system (currently VxWorks, but that cou...