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Remove stop kwarg and use write_then_readinto. #34

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Merged
merged 1 commit into from
Aug 23, 2019
Merged

Remove stop kwarg and use write_then_readinto. #34

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11 changes: 4 additions & 7 deletions adafruit_ccs811.py
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Original file line number Diff line number Diff line change
Expand Up @@ -107,7 +107,7 @@ def __init__(self, i2c_bus, address=0x5A):
buf = bytearray(1)
buf[0] = 0xF4
with self.i2c_device as i2c:
i2c.write(buf, end=1, stop=True)
i2c.write(buf, end=1)
time.sleep(.1)

#make sure there are no errors and we have entered application mode
Expand All @@ -132,17 +132,15 @@ def error_code(self):
buf = bytearray(2)
buf[0] = 0xE0
with self.i2c_device as i2c:
i2c.write(buf, end=1, stop=False)
i2c.readinto(buf, start=1)
i2c.write_then_readinto(buf, buf, out_end=1, in_start=1)
return buf[1]

def _update_data(self):
if self.data_ready:
buf = bytearray(9)
buf[0] = _ALG_RESULT_DATA
with self.i2c_device as i2c:
i2c.write(buf, end=1, stop=False)
i2c.readinto(buf, start=1)
i2c.write_then_readinto(buf, buf, out_end=1, in_start=1)

self._eco2 = (buf[1] << 8) | (buf[2])
self._tvoc = (buf[3] << 8) | (buf[4])
Expand All @@ -168,8 +166,7 @@ def temperature(self):
buf = bytearray(5)
buf[0] = _NTC
with self.i2c_device as i2c:
i2c.write(buf, end=1, stop=False)
i2c.readinto(buf, start=1)
i2c.write_then_readinto(buf, buf, out_end=1, in_start=1)

vref = (buf[1] << 8) | buf[2]
vntc = (buf[3] << 8) | buf[4]
Expand Down