c8befe4536
AnalogSource: make the Arduino AnalogSource interrupt driven
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this fixes several problems with reading analog sources:
- we were getting poor values because we didn't wait long enough for
an analog source to settle
- we wasted a lot of CPU cycles waiting for conversions
- we were not taking averages over many samples, which we did with
the old AP_ADC driver on the APM1
13 years ago
534aee17e9
TimerProcess: added suspend_timer()/resume_timer()
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this will be used to avoid races in driver initialisation
13 years ago
dbaa6fb6d2
TimerProcess: make some variables uint8_t
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save a couple of bytes
13 years ago
79d6c21dde
PeriodicProcess: added set_failsafe() call
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this adds an optional failsafe function that will be called in the
timer loop
13 years ago
b484411c41
timers: change to 1kHz timer by default
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we were using a 227Hz timer, which is far too slow
13 years ago
49ca774734
AP_PeriodicProcess: AP_TimerProcess can register multiple callbacks.
13 years ago
d288b8870d
purple: added PeriodicProcess library
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this library provides a clean API for drivers to request periodic
timer driven calls at whatever rate they need
13 years ago
Andrew Tridgell
Pat Hickey
Pat Hickey