From: Chuck Davis (roshicorp_at_roshi.com)
Date: 2002-02-03 19:04:46
On 22-Jan-02, Rob Sacks, wrote:
>Hi Chuck,
>> Ugh! :( But is that realtime, or is that polling?
>It's not realtime. I guess you could call it a kind of
>polling -- the application is polling a buffer maintained
>by the operating system. But the port itself doesn't
>get polled... the port itself gets read after each byte
>arrives by the operating system's interrupt handler.
>> Does this happen on the receipt of each character?
>The operating system reads the port after receipt of
>each character, but that has no connection to the timing
>of anything in the application.
[...]
What I'd like to know, Rob, or anyone, is how to look
like a BMr data stream. I, once, had a BMr, but sold
it before I really took the time to study it.
Doesn't it send a sync byte, w/ 4 data bytes?
What is the sync byte supposed to look like?
Does it change value, for each character, or what?
I'm figuring that, if the Roshi EEG unit receives
the BMr startup character, it would switch to the
BMr serial protocol.
Thanx :)
-- .-. .-. / \ .-. .-. / \ / \ / \ .-. _ .-. / \ / \ -/--Chuck Davis -/-----\-----/---\---/-\---/---\-----/-----\-------/-------\ RoshiCorp_at_ROSHI.com \ / \_/ `-' \ / \ / \ / `-' #11-9-01# `-' \ / `-' `-' On a Path to Peace of Mind...
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