Grove Digital Light Sensor

Hi Mike,

First of all, run "sudo i2cdetect -y 1" and see if you are picking up the sensor. Post the result.  Then post the whole result that you get when you run your program.

BP

Here is the test code we supply with SkyWeather.
import sys
sys.path.append('./TSL2591')


import time
import sys
sys.path.append('./SDL_Pi_TCA9545')

import SDL_Pi_TCA9545




################
# TCA9545 I2C Mux

#/*=========================================================================
#    I2C ADDRESS/BITS
#    -----------------------------------------------------------------------*/
TCA9545_ADDRESS =                         (0x73)    # 1110011 (A0+A1=VDD)
#/*=========================================================================*/

#/*=========================================================================
#    CONFIG REGISTER (R/W)
#    -----------------------------------------------------------------------*/
TCA9545_REG_CONFIG            =          (0x00)
#    /*---------------------------------------------------------------------*/

TCA9545_CONFIG_BUS0  =                (0x01)  # 1 = enable, 0 = disable
TCA9545_CONFIG_BUS1  =                (0x02)  # 1 = enable, 0 = disable
TCA9545_CONFIG_BUS2  =                (0x04)  # 1 = enable, 0 = disable
TCA9545_CONFIG_BUS3  =                (0x08)  # 1 = enable, 0 = disable

#/*=========================================================================*/

# I2C Mux TCA9545 Detection
try:
       tca9545 = SDL_Pi_TCA9545.SDL_Pi_TCA9545(addr=TCA9545_ADDRESS, bus_enable = TCA9545_CONFIG_BUS0)


       # turn I2CBus 3 on
       tca9545.write_control_register(TCA9545_CONFIG_BUS3)
       TCA9545_I2CMux_Present = True
except:
       print ">>>>>>>>>>>>>>>>>>><<<<<<<<<<<"
       print "TCA9545 I2C Mux Not Present"
       print ">>>>>>>>>>>>>>>>>>><<<<<<<<<<<"

import TSL2591

tsl = TSL2591.Tsl2591()  # initialize
full, ir = tsl.get_full_luminosity()  # read raw values (full spectrum and ir spectrum)
lux = tsl.calculate_lux(full, ir)  # convert raw values to lux
print (lux, full, ir)
print ()

def test(int_time=TSL2591.INTEGRATIONTIME_100MS, gain=TSL2591.GAIN_LOW):
       tsl.set_gain(gain)
       tsl.set_timing(int_time)
       full_test, ir_test = tsl.get_full_luminosity()
       lux_test = tsl.calculate_lux(full_test, ir_test)
       print ('Lux = %f  full = %i  ir = %i' % (lux_test, full_test, ir_test))
       print("integration time = %i" % tsl.get_timing())
       print("gain = %i \n" % tsl.get_gain())        

for i in [TSL2591.INTEGRATIONTIME_100MS,
             TSL2591.INTEGRATIONTIME_200MS,
             TSL2591.INTEGRATIONTIME_300MS,
             TSL2591.INTEGRATIONTIME_400MS,
             TSL2591.INTEGRATIONTIME_500MS,
             TSL2591.INTEGRATIONTIME_600MS]:
       test(i, TSL2591.GAIN_LOW)

for i in [TSL2591.GAIN_LOW,
             TSL2591.GAIN_MED,
             TSL2591.GAIN_HIGH,
             TSL2591.GAIN_MAX]:
       test(TSL2591.INTEGRATIONTIME_100MS, i)