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new readLight(), faster read...Light(), new setLightIntegrationTime() functions #19

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Merged
liske merged 1 commit into from
Jan 18, 2026
Merged

new readLight(), faster read...Light(), new setLightIntegrationTime() functions #19

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46 changes: 26 additions & 20 deletions apds9960/device.py
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Original file line number Diff line number Diff line change
Expand Up @@ -240,46 +240,52 @@ def isLightAvailable(self):

return (val == APDS9960_BIT_AVALID)

# read R/G/B/C light levels as a tuple of 4 16-bit values
def readLight(self):
# read all 4 channels at once from consecutive registers
data = self._read_i2c_block_data(APDS9960_REG_CDATAL, 8)

return (data[2] | data[3] << 8,
data[4] | data[5] << 8,
data[6] | data[7] << 8,
data[0] | data[1] << 8)

# reads the ambient (clear) light level as a 16-bit value
def readAmbientLight(self):
# read value from clear channel, low byte register
l = self._read_byte_data(APDS9960_REG_CDATAL)

# read value from clear channel, high byte register
h = self._read_byte_data(APDS9960_REG_CDATAH)
# read value from clear channel, low byte register first
l, h = self._read_i2c_block_data(APDS9960_REG_CDATAL, 2)

return l + (h << 8)

# reads the red light level as a 16-bit value
def readRedLight(self):
# read value from red channel, low byte register
l = self._read_byte_data(APDS9960_REG_RDATAL)

# read value from red channel, high byte register
h = self._read_byte_data(APDS9960_REG_RDATAH)
# read value from red channel, low byte register first
l, h = self._read_i2c_block_data(APDS9960_REG_RDATAL, 2)

return l + (h << 8)

# reads the green light level as a 16-bit value
def readGreenLight(self):
# read value from green channel, low byte register
l = self._read_byte_data(APDS9960_REG_GDATAL)

# read value from green channel, high byte register
h = self._read_byte_data(APDS9960_REG_GDATAH)
# read value from green channel, low byte register first
l, h = self._read_i2c_block_data(APDS9960_REG_GDATAL, 2)

return l + (h << 8)

# reads the blue light level as a 16-bit value
def readBlueLight(self):
# read value from blue channel, low byte register
l = self._read_byte_data(APDS9960_REG_BDATAL)

# read value from blue channel, high byte register
h = self._read_byte_data(APDS9960_REG_BDATAH)
# read value from blue channel, low byte register first
l, h = self._read_i2c_block_data(APDS9960_REG_BDATAL, 2)

return l + (h << 8)

# set the integration time for the light sensor to nearest multiple of 2.78ms
def setLightIntegrationTime(self, time):
v = 256 - round(time / 2.78)
if v > 255:
raise ValueError("Integration time too short")
if v < 0:
raise ValueError("Integration time too long")
self._write_byte_data(APDS9960_REG_ATIME, v)

# *******************************************************************************
# Proximity sensor controls
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