def set_integration_time(self, integration_time):
'''Sets the integration time for the TSL2561'''
# Enable the device by setting the control bit to 0x03
self.enable()
self.integration_time = integration_time
# Update the timing register
handle = self.device.i2c_open(bus, self.address)
io.write8(self.device, handle, TSL2561_COMMAND_BIT | TSL2561_REGISTER_TIMING,
self.integration_time | self.gain)
self.device.i2c_close(handle)
# Turn the device off to save power
self.disable()
def set_gain(self, gain):
'''Adjusts the gain on the TSL2561 (adjusts the sensitivity to light)
'''
# Enable the device by setting the control bit to 0x03
self.enable()
self.gain = gain
# Update the timing register
handle = self.device.i2c_open(bus, self.address)
io.write8(self.device, handle, TSL2561_COMMAND_BIT | TSL2561_REGISTER_TIMING,
self.integration_time | self.gain)
self.device.i2c_close(handle)
# Turn the device off to save power
self.disable()
def disable(self):
'''Disables the device (putting it in lower power sleep mode)'''
handle = self.device.i2c_open(bus, self.address)
io.write8(self.device, handle, TSL2561_COMMAND_BIT | TSL2561_REGISTER_CONTROL,
TSL2561_CONTROL_POWEROFF)
self.device.i2c_close(handle)
def enable(self):
'''Enable the device by setting the control bit to 0x03'''
handle = self.device.i2c_open(bus, self.address)
io.write8(self.device, handle, TSL2561_COMMAND_BIT | TSL2561_REGISTER_CONTROL,
TSL2561_CONTROL_POWERON)
self.device.i2c_close(handle)