Hello,
honestly speaking that would be fantastic if your project happen and there is RTEMS/Cortex-R4F port in the tree. I do have already TI Hercules RM48 kit here for some time now, but so far has not found any time to port RTEMS to it. Perhaps with your port Cortex-R4F support and TMS570 BSP as a basis this may be more suitable for my usual hobby "over the weekend evening" hacking session.
I completely agree that Hercules family is nice for its safety feature set. It's also quite nice for its SoC pricing and for pricing of development kits especially considering hobby writers. http://www.ti.com/lsds/ti/microcontroller/safety_mcu/rm4_arm_cortex-r4/tools_software.page#kits
Good luck! And thanks for proposing this project! Karel On 03/17/14 12:40 AM, Pavel Pisa wrote:
Hello everybody, we have a student (Premysl Houdek) who has interrest in ARM based embedded systems. He has long term experience with Cotex-M LPC based boards. He has not used RTEMS yet but he likes idea to test it, work on it and eventually use it in applications. We have discussed possible summer and thesis projects and his preference is to try port RTEMS to Cortex-R4F / Ti's TMS570LS3137 . Advantage is that we have some boards based on this chip left at our university office from previous projects, we have already implemented support for CAN, FlexRay and other peripherals with use of Ti CCS and included rudimentary OS and we would be happy to test RTEMS as more complete operating system running on the HW. Other, more important reason for Cortex-R4 is that it is one of not so many safety enhanced CPUs. TMS570LS3137 includes two cores in lockstep mode with hardware differences comparison, full ECC SRAM and Flash and all peripherals registers and memories equipped by parity bits. There is not much MCUs which provide such setup. There are more such PowerPC based systems and there are much more expensive special chips for aerospace and space applications. But Ti's TMS570 and Hercules families are relatively new and some of these chips are quite affordable. RTEMS targets same/similar range of applications as these chips so I think there is good match.
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