rtos

picadilly

... parallel port as GPIO is always troublesome (it was never designed for that purpose) 3) running true real time applications on ANY OS (including RTOS) is located somewhere between really difficult and impossible. 4) it would require me to have a full PC with keyboard and monitor etc. in the garage ...

6by9

... as the framework next calls into it) - manage to leave a hardware block as "in use", and future uses of that block will fail. VC is running an RTOS, and it doesn't support killing processes. There was ongoing work for the next chip with rebooting VC whilst the ARM remained up with all VC services ...

Anyone wanting to poke at a bare-metal SMP (or SMP-aware RTOS) take a look here:

http://www.raspberrypi.org/documentatio ... /README.md

ame

... a problem we are forced to live with (especially for projects that must have the software run on bare metal do to timing constraints beyond even a RTOS, or needing a true 100% of the processing power with no ISR's or anything else in the way). Such projects pop up from time to time, requiring a ...

DavidS

... a problem we are forced to live with (especially for projects that must have the software run on bare metal do to timing constraints beyond even a RTOS, or needing a true 100% of the processing power with no ISR's or anything else in the way). Such projects pop up from time to time, requiring a ...

marked

... can be processed in a fixed or determinate amount of time guaranteed by the operating system. This means for example that if you used an RTOS (realtime operating system) that if you moved an object, its position can be tracked, evaluated, predicted and movement commands issued all within ...

Just FYI, there is a dual scaler/vector core on the Pi2 VC4, plus 12 Quad processors. The Vector/Scaler cores run ThreadX as the RTOS, and control all the HW blocks in the cores. The cores can move between scaler and vectors operations at any time. Usually the cores are programmed in C ...

mimi123

... supposedly has? Not supposedly but I'm using it right now. IT IS NOT A DSP BUT A FULL CPU WITH DSP EXTENSIONS, DUAL CORE WITH SMP RUNNING A FULL RTOS.

GAGAN

... yrs in ERP software development with C,C++ as core language and currently working on defense systems in projects including cluster computing and RTOS. I am single yet and marriage process is on the way...hopefully will get hookup with someone soon :) . Anyways I started using Raspberry Pi from ...

Wire

At one point it was stated that the RPI RTOS was not stable enough to do direct stepper driving. Has that been resolved now? Right now the PICnc is capped at 40kHz so a direct GPIO solution running at 1MHz (or anything over 100kHz) would be a ...

mimi123

... (in some cases with the addition of a few resisters, in others just a connector) Without using any other IC's. There is the VPU which has a full RTOS with SMP<ThreadX> :roll: I see that as more adapted with a AMP-capable RiscOS(which runs a RISC OS instance per app and then compose them)

charleslinquist

... in an aircraft (like a multirotor) the power demands are usually 128 Watts and up, so 5 Watts would hardly be noticed. Since Raspbian isn't a RTOS, I worry that Linux would get in the way - a one second "hang" could be fatal, so I thought that the faster RPi2 would have less tendency to get ...

Jim Manley

... versions of things running on the Pi, but they've been one-offs without much in the way of support and tools to make full use of without being an RTOS expert. The other thing that USC is designed for is scalability from stand-alone embedded to cloud-distributed levels of operation. That's a pretty ...

ankura66

... and I/O interface through external boards. Are there any restrictions in connecting things to Raspberry Pi Boards 2.Is there any open source RTOS available for use on Raspberry Pi? 3.Are the Linux distributions currently available on Raspberry Pi stable enough to be sued in a commercial product? ...

Miknantes

Hi, 2. embedded virtualization (i.e. proprietary RTOS as one guest and managment OS Linux as another guest. The RTOS will have higher priority over managment OS) You said that XVisor can be used to virtualize a RTOS. Is XVisor Real Time compliant? ...

tskwara

... of the system is not limited by the UART speed as explained next. Real-time Performance The ProtoPLC MCU runs a real time operating system (RTOS) that handles communication with the Raspberry Pi and can manage deterministic behavior of external I/O if that is needed. While the external digital ...

Hove

... and did not trigger the motion processing code. It was able to collect data at 930Hz - I suspect the 70 misses per second are down to not using a RTOS or microcontroller. I had tried increasing the process niceness but os.setpriority() is only support in python 3. Time to move on, I think.

... believe you can now program (?), it's much easier to use than the really horrible quad instruction set (blame Eben). The standard firmware uses a RTOS running on the cores to coordinate the whole system.

nocturnal35

... with 700MHz, my pin transitions must be very fast. Because of this speed, my program crashes with the other tasks timings. Do I need to setup an rtos for this simple timing problem??

ghans

The Pi does not run a RTOS by default , but a
Linux kernel mainly aimed at server/desktop multitasking.
Other tasks might get executed in the background in a
non-deterministic way. An RTOS would enable you to change this
behaviour with finer granularity.

ghans

nocturnal35

... 100 ms i.e. So, 1- Can it be about my software? 2- Can it be about the high speed of rpi, for panels? (with my fast timing) 3- Can it be about RTOS speciality of the rpi? Does it effect "my high-speed pin changing software" when executing the other OS tasks? (I've set rpi to start in command ...

seumas

... pressure sensor, and 4 ultrasonic distance sensors, all feeding from the microcontroller back into the Pi via SPI. I've learned how to code for a RTOS on the microcontroller and how to write a control daemon in python that can talk asynchronously over SPI to the microcontoller yet still get stuff ...

PiGraham

... with a JTAG programmer and single-step, thread-aware debugger based on OpenOCD and gdb. A comprehensive software stack with a choice of several RTOS/TCP stack options including ThreadX/NetX, ThreadX/NetX Duo and FreeRTOS/LwIP. Advanced security and networking features such as SSL/TLS, IPv4/IPv6 ...

jbowler

... My question is: What is the best option for an OS? I don't want something "heavy" I just want something " LITE " and FAST . Should I use a RTOS or a Linux based OS is better? Well, if you want Qt it has to be Windows, Symbian or un*x doesn't it? And they aren't listing Symbian any longer: ...

plinioandrade

... Qt. My question is: What is the best option for an OS? I don't want something "heavy" I just want something " LITE " and FAST . Should I use a RTOS or a Linux based OS is better? I really appreciate any comments. Sincerely, Plínio Andrade.

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