Hello.
On 02/17/2017 12:05 PM, Xue Liu wrote:
Hello Johann,
2017-02-16 16:55 GMT+01:00 Johann Fischer <johann_fischer@xxxxxxxxx>:
Hi Xue,
Now I am working on a driver for MCR20A radio chip from NXP. This chip
has a special feature: support two PAN networks. It means it can
operate on two different or the same channels with different PAN IDs,
short addresses and extended addresses. I suppose to add two 802.15.4
interfaces for this feature. And I have two questions:
1. how to add 802.15.4 devices ? Call ieee802154_register_hw() twice
with different struct ieee802154_hw ?
2. how to deal with tx and rx regarding two interfaces.
Thanks.
Dual PAN is something like nice to have.
I suggest initialy to implement only PAN ID 0 support. It is easier and you
would have fewer problems with the sequence manager. If the driver is stable
and tested, then you can expand it and add support for dual PAN.
I forgot to post my current work on Github.
https://github.com/xueliu/mcr20a-linux
Now it is somehow working for only one PAN. Now I am cleaning it and
testing other functions.
Nice, so you have something already.
I agree with Johann here that getting a basic driver in (without dual
PAN support) makes most sense. This will allow us to get the driver
reviewed and mainlined to have basic hardware support working. Once that
is done more exotic features like dual PAN can be supported.
This approach will also make sure that you are not stuck alone with this
for ages. :)
Might I ask what kind of hardware you are working with? Is there a board
running Linux with this transceiver hooked up directly or are you using
a off the shelf module with the MCR20A and attached it over SPI and
GPIOs to a board you are working with?
A cheap and easy to order source for a a MCR20A module would be
appreciated. The only board I found was the Freedom Development Board
for MCR20A at Mouser for 84 EUR which looks expensive for the
transceiver and some led and buttons only.
regards
Stefan Schmidt
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