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Post by karambit on Jan 28, 2018 9:19:17 GMT -8
My SI1145 Sunlight Sensor is not working. I can't read it with the GroveWeatherPi.py script or the simpletest.py. It is wired up correctly to the Grove connector under the JP4 on the Mux. I see it on Bus 3 after running TCA9545 test script. I do not see it at 0x60 when running i2cdetect.
pi@raspberrypi:~ $ sudo i2cdetect -y 1
0 1 2 3 4 5 6 7 8 9 a b c d e f
00: -- -- -- -- -- -- -- -- -- -- -- -- --
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
40: -- -- -- -- -- -- -- -- 48 -- -- -- -- -- -- --
50: -- -- -- -- -- -- -- 57 -- -- -- -- -- -- -- --
60: -- -- -- -- -- -- -- -- 68 -- -- -- -- -- -- --
70: -- -- -- 73 -- -- -- 77
pi@raspberrypi:~ $ cd SDL_Pi_GroveWeatherPi/SDL_Pi_TCA9545/
pi@raspberrypi:~/SDL_Pi_GroveWeatherPi/SDL_Pi_TCA9545 $ sudo python testSDL_Pi_TCA9545.py
Test SDL_Pi_TCA9545 Version 1.0 - SwitchDoc Labs
Sample uses 0x73
Program Started at:2018-01-28 12:14:03
-----------BUS 0-------------------
tca9545 control register B3-B0 = 0x1
ignore Interrupts if INT3' - INT0' not connected
tca9545 control register Interrupts = 0x0
0 1 2 3 4 5 6 7 8 9 a b c d e f
00: -- -- -- -- -- -- -- -- -- -- -- -- --
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
40: -- -- -- -- -- -- -- -- 48 -- -- -- -- -- -- --
50: -- -- -- -- -- -- -- 57 -- -- -- -- -- -- -- --
60: -- -- -- -- -- -- -- -- 68 -- -- -- -- -- -- --
70: -- -- -- 73 -- -- -- 77
-----------------------------------
-----------BUS 1-------------------
tca9545 control register B3-B0 = 0x2
ignore Interrupts if INT3' - INT0' not connected
tca9545 control register Interrupts = 0x0
0 1 2 3 4 5 6 7 8 9 a b c d e f
00: -- -- -- -- -- -- -- -- -- -- -- -- --
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
70: -- -- -- 73 -- -- -- --
-----------------------------------
-----------BUS 2-------------------
tca9545 control register B3-B0 = 0x4
ignore Interrupts if INT3' - INT0' not connected
tca9545 control register Interrupts = 0x0
0 1 2 3 4 5 6 7 8 9 a b c d e f
00: -- -- -- -- -- -- -- -- -- -- -- -- --
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
70: -- -- -- 73 -- -- -- --
-----------------------------------
-----------BUS 3-------------------
tca9545 control register B3-B0 = 0x8
ignore Interrupts if INT3' - INT0' not connected
tca9545 control register Interrupts = 0x0
0 1 2 3 4 5 6 7 8 9 a b c d e f
00: -- -- -- -- -- -- -- -- -- -- -- -- --
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
60: 60 -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
70: -- -- -- 73 -- -- -- --
-----------------------------------
^CTraceback (most recent call last):
File "testSDL_Pi_TCA9545.py", line 122, in <module>
time.sleep(5.0)
KeyboardInterrupt
pi@raspberrypi:~/SDL_Pi_GroveWeatherPi/SDL_Pi_TCA9545 $ cd ..
pi@raspberrypi:~/SDL_Pi_GroveWeatherPi $ cd SDL_Pi_SI1145/
pi@raspberrypi:~/SDL_Pi_GroveWeatherPi/SDL_Pi_SI1145 $ sudo python simpletest.py
Traceback (most recent call last):
File "simpletest.py", line 41, in <module>
sensor = SDL_Pi_SI1145.SDL_Pi_SI1145()
File "/home/pi/SDL_Pi_GroveWeatherPi/SDL_Pi_SI1145/SDL_Pi_SI1145.py", line 165, in __init__
self._reset()
File "/home/pi/SDL_Pi_GroveWeatherPi/SDL_Pi_SI1145/SDL_Pi_SI1145.py", line 172, in _reset
self._device.write_byte_data(SI1145_ADDR,SI1145_REG_MEASRATE0, 0)
IOError: [Errno 121] Remote I/O error
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Post by SDL on Jan 29, 2018 17:17:20 GMT -8
H Karmbit,
You have it connected to Bus3 correct?
It's showing up there.
-----------BUS 3-------------------
tca9545 control register B3-B0 = 0x8
ignore Interrupts if INT3' - INT0' not connected
tca9545 control register Interrupts = 0x0
0 1 2 3 4 5 6 7 8 9 a b c d e f
00: -- -- -- -- -- -- -- -- -- -- -- -- --
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
60: 60 -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
70: -- -- -- 73 -- -- -- --
i2cdetect will only check whatever is on the Raspberry Pi bus and what is on the LAST Bus # set up on the TCA9454 by a program.
If your TC9454 was set on Bus 2, then no, i2cdetect will not see what is on Bus 3.
Check your simplest.py script and see if it is setting the TCA9454 to Bus3. It it doesn't, then change the script or put it on the main Raspberry Pi bus. Then you can read it!
Move it to the main bus and see if you can read it on the main bus. Do you have the jumpers on the TCA9454 board hooked up as in the spec?
BP
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Post by karambit on Jan 30, 2018 14:25:03 GMT -8
I have the jumpers hooked up correctly. The simpletest.py script is the one that you guys have on github. It looks like it already uses the main Raspberry Pi bus.
# Default constructor will pick a default I2C bus.
#
# For the Raspberry Pi this means you should hook up to the only exposed I2C bus
# from the main GPIO header and the library will figure out the bus number based
# on the Pi's revision.
I don't see anything in the script that is setting the bus.
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Post by SDL on Feb 4, 2018 19:14:31 GMT -8
The comments really refer to the almost unusable 2nd I2C bus on the Raspberry Pi and can be ignored. You are using the main I2C bus on the Raspberry Pi.
However, it looks like the your sunlight sensor is connected to Bus3 on the TC9454.
Hook it up directly to the Raspberry Pi and rerun simplest.py
BP
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Post by karambit on Feb 6, 2018 15:00:45 GMT -8
Ok I will try that but the guide on your webpage for the sensor says to connect it where I have it.
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Post by SDL on Feb 7, 2018 13:49:48 GMT -8
We are trying to isolate your problem. Figure out what is not working!
BP
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Post by karambit on Feb 10, 2018 12:02:21 GMT -8
I plugged it into one of the I2C connectors on the Pi2Grover and now it seems to be working running the simpletest script as well as the GroveWeatherPi script.
pi@raspberrypi:~/SDL_Pi_GroveWeatherPi/SDL_Pi_SI1145 $ sudo i2cdetect -y 1
0 1 2 3 4 5 6 7 8 9 a b c d e f
00: -- -- -- -- -- -- -- -- -- -- -- -- --
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
40: -- -- -- -- -- -- -- -- 48 -- -- -- -- -- -- --
50: -- -- -- -- -- -- -- 57 -- -- -- -- -- -- -- --
60: 60 -- -- -- -- -- -- -- 68 -- -- -- -- -- -- --
70: -- -- -- 73 -- -- -- 77
pi@raspberrypi:~/SDL_Pi_GroveWeatherPi/SDL_Pi_SI1145 $ sudo python simpletest.py
Press Cntrl + Z to cancel
Vis: 0
IR: 0
Vis Lux: 0.0
IR Lux: 0.0
UV Index: 0.0
Vis: 289
IR: 267
Vis Lux: 12.2950819672
IR Lux: 5.73770491803
UV Index: 0.17
Vis: 311
IR: 272
Vis Lux: 21.3114754098
IR Lux: 7.7868852459
UV Index: 0.29
These values are form inside the case I have everything in so that is why they are so low. The UV Index does seem to be off though. For instance I opened the case and it was showing a UV Index of 20+. It is completely overcast today.
-----------------
Sunlight Visible(Lux): 1847.95
Sunlight IR(Lux): 14194.26
Sunlight UV Index: 24.16
-----------------
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Post by SDL on Feb 10, 2018 16:07:17 GMT -8
OK. Well, the gain may be set off in the GroveWeatherPi software. 0.29 sounds right, 24.16 is waaaayy too high.
Glad the board is OK!
BP
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Post by karambit on Feb 11, 2018 11:23:18 GMT -8
Yeah the UV index is way way off. I just put the sensor outside the case and on a partly cloudy day it is showing a UV Index of 349 in both the GroveWeatherPi and simpltest scripts.
GroveWeatherPi script:
-----------------
Sunlight Vi/IR/UV Sensor
-----------------
Sunlight Visible(Lux): 26752.46
Sunlight IR(Lux): 26754.92
Sunlight UV Index: 349.74
simpletest script:
Vis: 65535
IR: 65535
Vis Lux: 26752.4590164
IR Lux: 26754.9180328
UV Index: 349.74
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Post by SDL on Feb 11, 2018 13:39:04 GMT -8
I'll add that to the BugWeek February 2018 List!
BP
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mcinflyre
Junior Member
Posts: 53 
Raspberry Pi: Yes
Other Device: PC, Mac and Android devices.
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Post by mcinflyre on Mar 6, 2018 11:47:36 GMT -8
I have 2 questions regarding the Grove Sunlight Sensor.
Question 1. When I connect the Sunlight Sensor (SI1145) to one of the I2C ports on the Pi2Grover, it is detected by both simpltest.py and GroveWeather.py. When I run simplest.py, it returns data as expected. However, when I run GroveWeatherPi.py, the board is detected but never returns values other than 0's.
-- When I plug the Sunlight Sensor into J4 on the Mux (as listed above in the first post) and run the testSDL_Pi_TCA9545.py script, this is the output:
Test SDL_Pi_TCA9545 Version 1.0 - SwitchDoc Labs
Sample uses 0x73
Program Started at:2018-03-06 13:30:06
-----------BUS 0-------------------
tca9545 control register B3-B0 = 0x1
ignore Interrupts if INT3' - INT0' not connected
tca9545 control register Interrupts = 0x0
0 1 2 3 4 5 6 7 8 9 a b c d e f
00: -- -- -- -- -- -- -- -- -- -- -- -- --
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
30: -- -- -- -- -- -- -- -- -- -- -- -- 3c -- -- --
40: 40 -- -- -- -- -- -- -- 48 -- -- -- -- -- -- --
50: -- -- -- -- -- -- -- 57 -- -- -- -- -- -- -- --
60: -- -- -- -- -- -- -- -- 68 -- -- -- -- -- -- --
70: -- -- -- 73 -- -- -- 77
-----------------------------------
-----------BUS 1-------------------
tca9545 control register B3-B0 = 0x2
ignore Interrupts if INT3' - INT0' not connected
tca9545 control register Interrupts = 0x0
0 1 2 3 4 5 6 7 8 9 a b c d e f
00: -- -- -- -- -- -- -- -- -- -- -- -- --
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
40: 40 -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
70: -- -- -- 73 -- -- -- --
-----------------------------------
-----------BUS 2-------------------
tca9545 control register B3-B0 = 0x4
ignore Interrupts if INT3' - INT0' not connected
tca9545 control register Interrupts = 0x0
0 1 2 3 4 5 6 7 8 9 a b c d e f
00: -- -- -- -- -- -- -- -- -- -- -- -- --
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
40: 40 -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
60: 60 -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
70: -- -- -- 73 -- -- -- --
-----------------------------------
-----------BUS 3-------------------
tca9545 control register B3-B0 = 0x8
ignore Interrupts if INT3' - INT0' not connected
tca9545 control register Interrupts = 0x0
0 1 2 3 4 5 6 7 8 9 a b c d e f
00: -- -- -- -- -- -- -- -- -- -- -- -- --
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
40: 40 -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
70: -- -- -- 73 -- -- -- --
-----------------------------------
As you can see, the Sunlight Sensor is showing up on Bus 2 (0X60), but I believe it should be on Bus 3?
When I run the simpletest.py script when plugged into J4 on the Mux, I get the following message: (which probably makes sense but want to include it anyway)
Traceback (most recent call last):
File "simpletest.py", line 41, in <module>
sensor = SDL_Pi_SI1145.SDL_Pi_SI1145()
File "/home/pi/SDL_Pi_GroveWeatherPi/SDL_Pi_SI1145/SDL_Pi_SI1145.py", line 166, in __init__
self._reset()
File "/home/pi/SDL_Pi_GroveWeatherPi/SDL_Pi_SI1145/SDL_Pi_SI1145.py", line 173, in _reset
self._device.write_byte_data(SI1145_ADDR,SI1145_REG_MEASRATE0, 0)
IOError: [Errno 121] Remote I/O error
=============================================
Question #2 - Brace yourself, this is a doozy... When mounting the Sunlight Sensor, which side of the sensor should be exposed to sunlight? I'm cutting a hole in my weather box and will have the plastic window covering the hole. (the plastic shield you sell on your website for this purpose). Once the laughter stops, let me know which way it should go.
Thanks for all your help.
Richards
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Post by SDL on Mar 6, 2018 13:00:34 GMT -8
Richards,
Great question on placement. You need to put it in the light.
OK, I'm being sarcastic. You need to point the sensor on the top out the quartz (it's not plastic!) window. Plastic blocks UV.
BP
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Post by SDL on Mar 6, 2018 13:00:55 GMT -8
Oh, and we have a bug to look at the sunlight sensor. We have seen the same thing.
BP
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mcinflyre
Junior Member
Posts: 53
Raspberry Pi: Yes
Other Device: PC, Mac and Android devices.
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Post by mcinflyre on Mar 6, 2018 13:07:41 GMT -8
Just so I'm clear (as quartz - ha), the top is the side with the Grove plug or the other side? Sorry about calling the quartz plastic, I didn't have time to look up what it actually was.
Thanks,
Richard
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Post by SDL on Mar 8, 2018 11:32:53 GMT -8
Grove connector up! It's the chip in the middle of the grove connector side.
BP
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