Hello, all
I have found the related answers about SPI bus usage in the MICAZ node
as following
http://www.mail-archive.com/[email protected]/msg20111.html
http://mail.millennium.berkeley.edu/pipermail/tinyos-help/2008-April/032819.html
In my sensor node, the hardware is same as MICAZ-OEM expect that the SS
pin(for SPI communication) of cc2420 is connected to the power.
That means I can not control the SS pin for SPI communication of CC2420.
Now I want to add a device with SPI communication to this sensor node.
Just as Phil answered connecting the same pins as CC2420.
I don´t know whether in my sensor node, SS pin for SPI communication also is
connected to the power as CC2420 ?
If it is the same, how to distinguish the cc2420 and this new device?
According to the SPI protocol, SS pin is used to distinguish the different
slaves.
I found that Phil said Resource arbiter could be used. But I don´t know how to
use it, could anybody give me an example?
Thanks in advance.
Jianxin
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