Dear Alper, what exactly do you mean by "IEEE 802.15.4 MAC" layer? As far as I know, IEEE 802.15.4 still only has 802.15.4e as an "official" MAC layer in an extended specification, but it is not part of the official standard yet. `/sys/net/link_layer/ieee802154` only implements the handling of IEEE 802.15.4 headers, but a very basic MAC (just send/receive data without any assurance) is implemented in `sys/net/gnrc/link_layer/netdev2/gnrc_netdev2_ieee802154.c` for the GNRC stack. There are however several other solutions for MAC with IEEE 802.15.4 currently under development (see [1] [2] [3] [4]). For IEEE 802.15.4e support we currently use the OpenWSN stack [5] [6], but a stand-alone module is planned. In general, both solutions (within the stack using one of the provided MAC modules or using capabilities provided by the device) are possible, depending on the features provided by the device.
Hope this made things clearer for you. Best regards, Martine Lenders [1] https://github.com/RIOT-OS/RIOT/pull/3730 [2] https://github.com/RIOT-OS/RIOT/pull/4180 [3] https://github.com/RIOT-OS/RIOT/pull/4184 [4] https://github.com/RIOT-OS/RIOT/pull/4213 [5] https://openwsn.atlassian.net/wiki/pages/viewpage.action?pageId=688187 [6] https://github.com/RIOT-OS/RIOT/tree/master/pkg/openwsn 2016-06-09 12:02 GMT+02:00 Alper Kamil Demir <akde...@adanabtu.edu.tr>: > Dear Martine, > IEEE 802.15.4 MAC layer is implemented within RIOT operating system > Or IEEE 802.15.4 MAC layer is implemented within RF tranceiver such as > CC2420 ??? > If IEEE 802.15.4 MAC layer is implemented within RIOT operating system, is > it in \sys\net\link_layer\ieee802154 ??? (If so, it seems so simple.) > If It is not implemented within RIOT, what is the function > of \sys\net\link_layer\ieee802154 directory? (is it an interface to IEEE > 802.15.4 MAC layer?) > > I appreciate if you can answer my question. > Best regards, > Assist. Prof. Dr. Alper K. Demir >
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