Random tidbits Bdale thinks are worth documenting.
Bdale Garbee
bdale@gag.com
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Mon, 15 Mar 2004
AMSAT-DL Annual Meeting
It looks like I'll be in Munich on business the week before the AMSAT-DL
annual meeting on 8 May. If everything works out, I hope to attend the meeting
and get an in-person update on how things are going with the
P3E project... which is
one of the satellites that will use the
CAN-Do! widgets I helped design...
Feature Creep
Big discussion via email yesterday motivated by Chuck about whether we can add
a capability to use the Can-Do modules as a bit pipe between a CPU in the
experiment module and the IHU. The end result is that yes, we can do it.
My proposal is that we implement byte-wide in and out busses. Two of the "spare" outputs and two of the analog input channels get taken over to serve as request/acknowledge handshake lines. The remaining analog inputs and the remaining two digital outputs continue to behave as they would in "normal" mode. Data is always sent in blocks of 8 bytes. The module's stream addresses for this capability are the same as for the command/control protocol but with the high order bit flipped, so that this bit-pipe function runs at lower priority than command and telemetry.
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