Paul,
I was imagining it as a channel back from a remote bus master. Dash
supports 2 byte local net addressing and 8 byte unique addressing. It
was designed to play well with RFID, so I would assume that unique
addresses would be of that form. Since 1-wire is a master/slave
messaging system, it could be possible to remotely drive the bus itself,
but that would seem like more work.
We would probably need a shim layer for owserver because it does not
support TCP directly. The reliable transport in Dash7 is a bit of a
cross between TCP and UDP and is message based rather than stream based.
This is actually a better fit for things like owserver, but it's
different and thus more difficult than TCP everywhere. There is a spec
of an adaption layer between dash7 and IPv6, but I don't know of any
implementations of that.
jerry
On 01/28/2014 11:57 AM, Paul Alfille wrote:
I just looked at dash7 -- 439MHz radio. Looks interesting, but its not
yet clear to me out how it would fit in.
I'm trying to download the protocol but how do you envision using
dash7? As communication from sensors directly, or as dash7-enabled bus
masters?
Does dash7 have unique addresses for each node? OWFS depends on
uniquely identifying nodes, and some means of self description (via
family code for most devices, sometimes with on-chip further specifics).
On Tue, Jan 28, 2014 at 2:29 PM, Jerry Scharf
<[email protected]
<mailto:[email protected]>> wrote:
Hi,
In the talk about wireless connection, no one mentioned Dash7. I am
solving a different problem and looking at it Dash7 seems to be the
perfect solution. It has longer range, low power, message based
transmission and location ability. It seems like the ideal package for
remote sensors. And it's all open, unlike zigbee.
Is it widely available? Has anyone played with it? It certainly
doesn't
have the buzz that zigbee has, but it has a huge DoD backing.
jerry
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