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Signed-off-by: Keith Packard <keithp@keithp.com>
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Having arbitrary alarms firing in the middle of complicated device
logic makes no sense at all. Therefore only correct use of ao_alarm
and ao_clear_alarm was around a specific ao_sleep call, with correct
recovery in case the alarm fires.
This patch replaces all uses of ao_alarm/ao_sleep/ao_clear_alarm with
ao_sleep_for, a new function which takes the alarm timeout directly.
A few cases which weren't simply calling ao_sleep have been reworked
to pass the timeout value down to the place where sleep *is* being
called, and having that code deal with the return correctly.
Signed-off-by: Keith Packard <keithp@keithp.com>
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This lets us set the rate to a lower value to improve range. 9600 baud
works great; 2400 baud makes the initial search take a long time.
Signed-off-by: Keith Packard <keithp@keithp.com>
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A timeout of 10ms is more than enough to receive a query packet, but
if we miss it during device discovery, it's a pain, so retry 5 times
to make sure we find everyone.
Signed-off-by: Keith Packard <keithp@keithp.com>
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Unused variables, mismatching signed/unsigned and a few other misc
warnings.
Signed-off-by: Keith Packard <keithp@keithp.com>
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This gives the remote boxes time to get back to listening for messages
after receiving the packet from the found box.
Signed-off-by: Keith Packard <keithp@keithp.com>
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Signed-off-by: Keith Packard <keithp@keithp.com>
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Signed-off-by: Keith Packard <keithp@keithp.com>
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