Hi Oleg, Thank you for your reply. It was really helpful. I actually posted another question on the mailing list about STM32F4Discovery and the possibility to run CCN-lite over it with 802.15.4. You have answered that question too.
I just have a follow up question about how the setup would look like if I use the Atmel at86rf23x transceiver with STM32F4Discovery. Does the transceiver hook up directly to the STM32F4Discovery board? Assuming I run CCN-lite directly on 802.15.4, how would I connect the STM32F4Discovery board to a computer that acts as a gateway to the CCN network? /Adeel > -----Original Message----- > From: devel [mailto:devel-boun...@riot-os.org] On Behalf Of Oleg Hahm > Sent: Wednesday, June 29, 2016 8:39 PM > To: RIOT OS kernel developers > Subject: Re: [riot-devel] Question regarding CCN-lite and RIOT supported > platforms > > Hi Adeel! > > On Tue, Jun 28, 2016 at 03:25:22PM +0000, Adeel Mohammad Malik wrote: > > I am writing to inquire about the status of running CCN-lite over the > > RIOT OS and about the platforms RIOT-OS supports. I am not sure if > > this is the right mailing list to send my email over but I hope I can > > be redirected to the right people if needed. > > Yes, devel@riot-os.org (or us...@riot-os.org) are the right lists to ask this > kind of questions. > > > 1. The homepage of RIOT-OS claims that CCN-lite is supported over > > RIOT. Has that been verified with the latest version of RIOT? > > Yes, we ran some tests to verify functionality of the CCN-lite package for > RIOT 2016.04. However, since that release CCN-lite and the support package > in RIOT has been extended by several features, so you might consider using > the latest version in RIOT master. > > > 2. Does CCN-lite only run directly over 802.15.4 or is there a > > possibility to run it over the IP over 802.15.4? > > In principle yes. The CCN-lite package uses GNRC netapi calls to communicate > with the lower layers. Hence, CCN-lite in RIOT could run on every arbitrary > layer in the GNRC stack (Link layer, IP, UDP...). However, some small > amendments are necessary to adapt CCN-lite in RIOT to run over 6LoWPAN > (mostly for the addressing format). If you're interested in doing this, I > would > be more than happy to help. > > > 3. Is there an estimate of how much RAM is required to run CCN-lite > > over the RIOT-OS? > > From the top of my head: a simple application in RIOT with CCN-lite requires > less than 20kB of RAM on a 32-bit platform (such as an ARM Cortex). > However, CCN-lite uses dynamic memory allocation for the content store, > PIT, FIB, and faces. Hence, at least 30kB of memory are advisable if you want > to be able to do at least a little bit of caching. > > Note, that using CCN-lite over IP will consume significantly more RAM. > > > 4. We would like to experiment with CCN-lite over the RIOT-OS. There > > are a lot of platforms listed on the homepage. What we are looking for > > is a platform that is constrained but at the same time has RAM more > > than typical constrained platforms. 64 KB of RAM may suffice for our > > needs. Anything more than that would be even better. We would really > > appreciate if someone could recommend a platform with RAM >= 64 KB > and > > has been tested to run CCN-lite over RIOT. > > I have been running extensive experiments with CCN-lite on RIOT using the > IoT-Lab testbed over the last months, using the Cortex-M3 nodes there. > These nodes have 64kB of RAM and I can confirm that this suffices to run a > reasonable ICN application with caching. However, the IoT-LAB nodes AFAIK > are not purchasable. An alternative would be to use an STM32 Discovery or > Nucleo board and connect an Atmel at86rf23x transceiver (the same one is > used on the IoT-Lab nodes). Both, MCU family and transceiver are very well > supported. > > Cheers, > Oleg > -- > printk("NONONONOO!!!!\n"); > linux-2.6.6/drivers/atm/zatm.c _______________________________________________ devel mailing list devel@riot-os.org https://lists.riot-os.org/mailman/listinfo/devel
