Hi Experts,
What is the special feature in the CMSIS ARM RTX RTOS compared to other commercial RTOS which makes the integration smoother and gives best performance ?
Thank you Bob
Hello
The project is not listed under TI in MDK 4.7, but under Keil: C:\Keil\ARM\Boards\Keil\MCBTMS570
Not sure how to attach a file ?????? I will find out....
Bob
California
Hi Bobboys,
One small issue.
I am not able to get the exact RTX code pointed by you for TI TMS570 Cortex-R4. It would be of great help if you attach or point me to any online link for the ported example code.
Thanks,
Techguyz
Thank You Bobboys !!
That's exactly what I would like to know.
RTX is more generic: - if a processor has a SysTick timer and the user program is CMSIS-compliant (i.e. has startup_xxx.s and system_xxx.c files) - implementation of CMSIS-RTX is easy and is documented in the references I sent you.
If not, you might have to make some adjustments - but since you have the source code - you can do anything.
ARM DS-5 (www.arm.com/ds5) contains the RTX port for the Renesas RZ which is a single Cortex-A9.
Keil MDK 4 has an example project for the TI TMS570 Cortex-R4 - this is not the CMSIS-RTOS compliant version of RTX - but this can be converted by referencing this appnote: Application Note 264: Migrate from RTX to CMSIS-RTOS
This example does not use a SysTick timer (I assume the TMS570 does not have one) - but uses a different timer.
Remember RTX is not multi-core - but you can run multiple instances of it - one for each core.
If you want to play with RTX: get a supported board and a copy of the eval version of MDK (MDK 5 is best) and try it out. RTX projects in uVision are called RTX_Blinky.
Refer to this appnote to see how RTX runs: Application Note 230: MDK V5.10 Lab for the STM32F4 Discovery Board. This is for the STMicroelectronics STM32F4 Discovery board.
Hi bobboys,
Thanks for your answer.
May I know is it available for R series and other series of A ?
I would like to make few comparative analysis on the same ?
RTX is a full featured RTOS for ARM processors. Most implementations are for Cortex-M although it has been ported to a Coretx-A9 and I believe to Cortex-R.
Rather than trying to distinguish between it and commercial products: here are some of the main features of RTX:
1) It is free with a BSD type license. This makes it really, really free. It is not a GPL license. There are no royalty or other fees.
2) It was created by ARM and we maintain it.
3) Source code is provided with all versions of Keil MDK 5 and also available here: RTX Real-Time Operating System Version 4.70 Evaluation Software Request
4) These versions are CMSIS-RTOS compliant.
5) Ports exist for Keil, GCC and IAR:
6) Keil uVision has two Kernel Awareness windows that update while the program is running. Other tools vendors can also provide such visibility.
7) Documentation is free on the web: CMSIS-RTOS RTX: Overview
8) The feature set can be found here: RTX Real-Time Operating System RTX has a small footprint and thread switching is quite fast.
9) The new book Getting Started with MDK 5 shows how to create RTX projects: http://www2.keil.com/docs/default-source/default-document-library/mdk5-getting-started.pdf?sfvrsn=0
10) RTX uses the SysTick timer. It does not use any other interrupts. Currently, it is for single CPU processors: not multi-processor configurations.
Hope this helps..
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