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Fix potential first read issue #17

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Merged
merged 5 commits into from
Oct 16, 2018
Merged

Fix potential first read issue #17

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93aed21
fix first read issue
jerryneedell Oct 14, 2018
8d7ce76
fix pylint issue - line too long
jerryneedell Oct 14, 2018
ddb9d66
fix continuation line
jerryneedell Oct 15, 2018
bcdc7a7
fix continuation line - add comment
jerryneedell Oct 15, 2018
125890e
Fix typo
tannewt Oct 16, 2018
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6 changes: 5 additions & 1 deletion adafruit_dht.py
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Original file line number Diff line number Diff line change
Expand Up @@ -138,7 +138,11 @@ def measure(self):
delay_between_readings = 0.5
if self._dht11:
delay_between_readings = 1.0
if time.monotonic()-self._last_called > delay_between_readings:
# Initiate new reading if this is the first call or if sufficient delay
# If delay not sufficient - return previous reading.
# This allows back to back access for temperature and humidity for same reading
if (self._last_called == 0 or
(time.monotonic()-self._last_called) > delay_between_readings):
self._last_called = time.monotonic()

pulses = self._get_pulses()
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