Mega: Status report logging

[adamberenzweig]

Parse and store the status reports coming out of the master, and keep the last N of them in a buffer. Spit that buffer back out (to serial) in response to a command, so we can hook up a laptop and get the goods.

The Mega has 8K of SRAM. Assuming we can use 6K of that for logging, and the status message is 22 bytes (as of today), that's 279 messages we can store. So that's only enough for one message per puck. Perhaps we want to explicitly keep the last message per puck (in an array) rather than the last N, so that pucks that aren't reporting often for some reason don't get crowded out.

Gabi said that some people hook up a flash drive to the Mega to log more data, we can investigate that as well.

[windmillfactory]

This is all very exciting... perhaps a flash drive that we could
remove easily is the jam! then we could put a large flash drive and
not have to worry about it. What you doing tonight?

wanna have that birthday beer tonight?

Jon

On Jul 25, 2011, at 2:57 PM, adamberenzweig wrote:

Parse and store the status reports coming out of the master, and
keep the last N of them in a buffer. Spit that buffer back out (to
serial) in response to a command, so we can hook up a laptop and get
the goods.

The Mega has 8K of SRAM. Assuming we can use 6K of that for
logging, and the status message is 22 bytes (as of today), that's
279 messages we can store. So that's only enough for one message
per puck. Perhaps we want to explicitly keep the last message per
puck (in an array) rather than the last N, so that pucks that aren't
reporting often for some reason don't get crowded out.

Gabi said that some people hook up a flash drive to the Mega to log
more data, we can investigate that as well.

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