Hi Dmitry, Le Tuesday 26 May 2009 13:21:57 Dmitry Eremin-Solenikov, vous avez écrit : > Hi, > > As a part of research activities in the Embedded Systems - Open Platform > Group from Siemens Corporate Technology we are working on adding support > for the IEEE 802.15.4 Wireless Personal Area Networks to the Linux. Our > current implementation is neither certified nor even feature complete. > However we'd like to present current state of our patchset to the Linux > developers community to gain comments, fixes, ideas, etc. This is not yet a > pull request, but more like an RFC. Let met just thank you for doing this, I am glad some people worked on this. Got a couple of questions below. > > The project page is available at > http://apps.sourceforge.net/trac/linux-zigbee with source code of kernel > part available from git at > http://zigbee-linux.git.sourceforge.net, mirrored for convenience at > git://git.kernel.org/pub/scm/linux/kernel/git/lumag/lowpan.git > > The source code for userspace utils is available from git at > http://linux-zigbee.git.sourceforge.net/ >From the project page I understand that you plan on providing a ZigBee stack, based on this 802.15.4 stack ? Do you plan on submitting the ZigBee stack later on ? Maybe you should mention that this implementation is royalty-free, but that commercial products using it should both respect the GPL license and pay a ZigBee royalty as per the ZigBee Alliance . That is just for clarification since right now it simply does 802.15.4 which is not subject to this royalty thing. > > Several comments about our implementation: > * As with 802.11 there are two types of devices: the smart ones that > implement most parts of the protocol by themselves and more or less dumb > ones which simply send and receive what they are told. Currently we do only > support the second type of devices (SoftMAC) > * The implementation is split between code driving radio, (master, mwpanX > interface: mdev.c), code processing frames according the IEEE 802.15.4 > rules (slave wpanX devices) and finally sockets (af_ieee802154.c, > dgram.c, raw.c). This sounds good. Do you also plan on integrating some meshing algorithm on top of 802.15.4 ? If so, > * We do present two example drivers using our stack. One is purely virtual > one either looping the packets back or connecting several virtual > interfaces (the one at fakelb.c), and the driver for the Freescale MC13192 > evaluation boards (13192-SARD, 13192-EVK) using our custom firmware > (currently only available at request, we are working on publishing it). The > driver for the Atmel at86rf230/at86rf231 chips will follow in several > weeks. Is the virtual interface just like mac80211_hwsim for 802.11 ?h -- Best regards, Florian Fainelli Email : florian@xxxxxxxxxxx http://openwrt.org ------------------------------- -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
