KeyError 4 getting lux value about adafruit_circuitpython_veml7700

[RobCranfill]

I am running adafruit_veml7700 1.1.4 (the latest), as I have been for months. This stopped working a week or two ago.

[caternuson]

Did you change anything else? Try updating your CP firmware and libraries to all latest versions.

Can't recreate this with a quick test:

Adafruit CircuitPython 7.0.0 on 2021-09-20; Adafruit QT Py M0 with samd21e18
>>> import board
>>> import adafruit_veml7700
>>> veml = adafruit_veml7700.VEML7700(board.I2C())
>>> veml.light
5507
>>> veml.lux
317.491
>>> 

EDIT As another test/check - try printing the light_integration_time before the call to lux.

while True:
    print("Light Integration Time:", veml7700.light_integration_time)
    print("Ambient light:", veml7700.lux)
    time.sleep(1.0)

[RobCranfill]

Thanks for the reply. I'm not using CircuitPython, I'm using python 3; is that an issue? I *thought* I updated the libraries: ***@***.***:~/proj/blatb $ pip3 install adafruit-circuitpython-veml7700 Looking in indexes: https://pypi.org/simple, https://www.piwheels.org/simple Requirement already satisfied: adafruit-circuitpython-veml7700 in /home/pi/.local/lib/python3.7/site-packages (1.1.4) Requirement already satisfied: adafruit-circuitpython-register in /home/pi/.local/lib/python3.7/site-packages (from adafruit-circuitpython-veml7700) (1.9.4) Requirement already satisfied: Adafruit-Blinka in /home/pi/.local/lib/python3.7/site-packages (from adafruit-circuitpython-veml7700) (6.3.0) Requirement already satisfied: adafruit-circuitpython-busdevice in /home/pi/.local/lib/python3.7/site-packages (from adafruit-circuitpython-veml7700) (5.0.5) Requirement already satisfied: sysv-ipc>=1.1.0 in /home/pi/.local/lib/python3.7/site-packages (from Adafruit-Blinka->adafruit-circuitpython-veml7700) (1.1.0) Requirement already satisfied: rpi-ws281x>=4.0.0 in /home/pi/.local/lib/python3.7/site-packages (from Adafruit-Blinka->adafruit-circuitpython-veml7700) (4.2.5) Requirement already satisfied: RPi.GPIO in /usr/lib/python3/dist-packages (from Adafruit-Blinka->adafruit-circuitpython-veml7700) (0.7.0) Requirement already satisfied: pyftdi>=0.40.0 in /home/pi/.local/lib/python3.7/site-packages (from Adafruit-Blinka->adafruit-circuitpython-veml7700) (0.52.9) Requirement already satisfied: Adafruit-PlatformDetect>=3.1.0 in /home/pi/.local/lib/python3.7/site-packages (from Adafruit-Blinka->adafruit-circuitpython-veml7700) (3.2.0) Requirement already satisfied: Adafruit-PureIO>=1.1.7 in /home/pi/.local/lib/python3.7/site-packages (from Adafruit-Blinka->adafruit-circuitpython-veml7700) (1.1.8) Requirement already satisfied: pyusb>=1.0.0 in /home/pi/.local/lib/python3.7/site-packages (from pyftdi>=0.40.0->Adafruit-Blinka->adafruit-circuitpython-veml7700) (1.1.1) Requirement already satisfied: pyserial>=3.0 in /usr/lib/python3/dist-packages (from pyftdi>=0.40.0->Adafruit-Blinka->adafruit-circuitpython-veml7700) (3.4) Sorry, I realize you are not the Adafruit helpdesk person. ;-) I've done a little Googling with no success. </rob>

…

On Wed, Oct 6, 2021 at 4:50 PM Carter Nelson ***@***.***> wrote: Did you change anything else? Try updating your CP firmware and libraries to all latest versions. Can't recreate this with a quick test: Adafruit CircuitPython 7.0.0 on 2021-09-20; Adafruit QT Py M0 with samd21e18>>> import board>>> import adafruit_veml7700>>> veml = adafruit_veml7700.VEML7700(board.I2C())>>> veml.light5507>>> veml.lux317.491>>> — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#18 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ABLQHZTNOVAWUY7U23INVGLUFTODZANCNFSM5FP5YOMQ> . Triage notifications on the go with GitHub Mobile for iOS <https://apps.apple.com/app/apple-store/id1477376905?ct=notification-email&mt=8&pt=524675> or Android <https://play.google.com/store/apps/details?id=com.github.android&referrer=utm_campaign%3Dnotification-email%26utm_medium%3Demail%26utm_source%3Dgithub>.

[caternuson]

Python3 on a Raspberry Pi should be fine, assuming you are using via Blinka:
https://learn.adafruit.com/circuitpython-on-raspberrypi-linux/overview

Just did a quick test on a Pi with Python3 and still seems to work OK:

(blinka) pi@raspberrypi:~ $ python3
Python 3.7.3 (default, Jan 22 2021, 20:04:44) 
[GCC 8.3.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import board
>>> import adafruit_veml7700
>>> veml = adafruit_veml7700.VEML7700(board.I2C())
>>> veml.light
5435
>>> veml.lux
312.192
>>> veml.light_integration_time
0
>>> 

version check:

(blinka) pi@raspberrypi:~ $ pip3 list | grep veml
adafruit-circuitpython-veml7700  1.1.7    

[RobCranfill]

Thanks, I’ll let you know if I figure out what my problem is. I have a work-around in using “light” instead of “lux”, but it’s not really the same, right?

On Wed, Oct 6, 2021 at 17:46 Carter Nelson ***@***.***> wrote: Python3 on a Raspberry Pi should be fine, assuming you are using via Blinka: https://learn.adafruit.com/circuitpython-on-raspberrypi-linux/overview Just did a quick test on a Pi with Python3 and still seems to work OK: (blinka) ***@***.***:~ $ python3Python 3.7.3 (default, Jan 22 2021, 20:04:44) [GCC 8.3.0] on linuxType "help", "copyright", "credits" or "license" for more information.>>> import board>>> import adafruit_veml7700>>> veml = adafruit_veml7700.VEML7700(board.I2C())>>> veml.light5435>>> veml.lux312.192>>> veml.light_integration_time0>>> — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#18 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ABLQHZT3PP2V7Z55M2ZCJITUFTUX3ANCNFSM5FP5YOMQ> . Triage notifications on the go with GitHub Mobile for iOS <https://apps.apple.com/app/apple-store/id1477376905?ct=notification-email&mt=8&pt=524675> or Android <https://play.google.com/store/apps/details?id=com.github.android&referrer=utm_campaign%3Dnotification-email%26utm_medium%3Demail%26utm_source%3Dgithub>.

-- </rob>

[caternuson]

No. They are not the same.

Have you tried printing the value of light_integration_time prior to the call to lux? Do you also get 0 as shown above?

[RobCranfill]

I do *not* get zero for light_integration_time . Could this be an issue? ***@***.***:~ $ python3 Python 3.7.3 (default, Jan 22 2021, 20:04:44) [GCC 8.3.0] on linux Type "help", "copyright", "credits" or "license" for more information.

>> import board >> import adafruit_veml7700 >> veml = adafruit_veml7700.VEML7700(board.I2C()) >> veml.light_integration_time

4

>> veml.light

830

>> veml.lux

Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/home/pi/.local/lib/python3.7/site-packages/adafruit_veml7700.py", line 239, in lux return self.resolution() * self.light File "/home/pi/.local/lib/python3.7/site-packages/adafruit_veml7700.py", line 216, in resolution * (gain_max / self.gain_value()) File "/home/pi/.local/lib/python3.7/site-packages/adafruit_veml7700.py", line 194, in integration_time_value return self.integration_time_values[integration_time] KeyError: 4

>>

</rob>

…

On Thu, Oct 7, 2021 at 7:43 AM Carter Nelson ***@***.***> wrote: No. They are not the same. Have you tried printing the value of light_integration_time prior to the call to lux? Do you also get 0 as shown above? — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#18 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ABLQHZWTURLXGU3RO6C3APDUFWWYNANCNFSM5FP5YOMQ> . Triage notifications on the go with GitHub Mobile for iOS <https://apps.apple.com/app/apple-store/id1477376905?ct=notification-email&mt=8&pt=524675> or Android <https://play.google.com/store/apps/details?id=com.github.android&referrer=utm_campaign%3Dnotification-email%26utm_medium%3Demail%26utm_source%3Dgithub>.

[RobCranfill]

Oho! So I tried *setting* the integration time to zero, and guess what? It works (or at any rate it doesn't throw an exception)

>> veml.light_integration_time = 0 >> veml.lux

38.7072 I will try this in my project. (I have an RPi driving an LCD display that shows output from my weather station; the light sensor automatically adjusts the LCDs backlight so it's not too bright at night. See https://github.com/RobCranfill/blatb if you care. ;-) Thanks for your help! </rob>

…

On Thu, Oct 7, 2021 at 11:11 AM Rob Cranfill ***@***.***> wrote: I do *not* get zero for light_integration_time . Could this be an issue? ***@***.***:~ $ python3 Python 3.7.3 (default, Jan 22 2021, 20:04:44) [GCC 8.3.0] on linux Type "help", "copyright", "credits" or "license" for more information. >>> import board >>> import adafruit_veml7700 >>> veml = adafruit_veml7700.VEML7700(board.I2C()) >>> veml.light_integration_time 4 >>> veml.light 830 >>> veml.lux Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/home/pi/.local/lib/python3.7/site-packages/adafruit_veml7700.py", line 239, in lux return self.resolution() * self.light File "/home/pi/.local/lib/python3.7/site-packages/adafruit_veml7700.py", line 216, in resolution * (gain_max / self.gain_value()) File "/home/pi/.local/lib/python3.7/site-packages/adafruit_veml7700.py", line 194, in integration_time_value return self.integration_time_values[integration_time] KeyError: 4 >>> </rob> On Thu, Oct 7, 2021 at 7:43 AM Carter Nelson ***@***.***> wrote: > No. They are not the same. > > Have you tried printing the value of light_integration_time prior to the > call to lux? Do you also get 0 as shown above? > > — > You are receiving this because you authored the thread. > Reply to this email directly, view it on GitHub > <#18 (comment)>, > or unsubscribe > <https://github.com/notifications/unsubscribe-auth/ABLQHZWTURLXGU3RO6C3APDUFWWYNANCNFSM5FP5YOMQ> > . > Triage notifications on the go with GitHub Mobile for iOS > <https://apps.apple.com/app/apple-store/id1477376905?ct=notification-email&mt=8&pt=524675> > or Android > <https://play.google.com/store/apps/details?id=com.github.android&referrer=utm_campaign%3Dnotification-email%26utm_medium%3Demail%26utm_source%3Dgithub>. > >

[caternuson]

Yes, getting a 4 would be an issue. That is not a valid setting, which is what is throwing the key error. 0 is a valid setting. The valid settings are:

    ALS_25MS = const(0xC)
    ALS_50MS = const(0x8)
    ALS_100MS = const(0x0)
    ALS_200MS = const(0x1)
    ALS_400MS = const(0x2)
    ALS_800MS = const(0x3)

So the question is how it got set to 4 in the first place? Were you doing that?

[RobCranfill]

No, I was not setting light_integration_time. I can't remember now if I did a cold restart on this machine. It had been up for over 30 days when it began throwing the error; I restarted it, it still errored, then I started looking into the code. At any rate, I guess the "bug" is solved. Shall I close it, or did you? </rob>

…

On Thu, Oct 7, 2021 at 11:20 AM Carter Nelson ***@***.***> wrote: Yes, getting a 4 would be an issue. That is not a valid setting, which is what is throwing the key error. 0 is a valid setting. The valid settings are: ALS_25MS = const(0xC) ALS_50MS = const(0x8) ALS_100MS = const(0x0) ALS_200MS = const(0x1) ALS_400MS = const(0x2) ALS_800MS = const(0x3) So the question is how it got set to 4 in the first place? Were you doing that? — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#18 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ABLQHZQQMCA5XDZOSH5NKXLUFXQFBANCNFSM5FP5YOMQ> . Triage notifications on the go with GitHub Mobile for iOS <https://apps.apple.com/app/apple-store/id1477376905?ct=notification-email&mt=8&pt=524675> or Android <https://play.google.com/store/apps/details?id=com.github.android&referrer=utm_campaign%3Dnotification-email%26utm_medium%3Demail%26utm_source%3Dgithub>.

[caternuson]

See if you can recreate the issue. If so, we can continue to take a look. If not, then, yes, please close. Also, nothing really urgent here, so OK to keep this open for a little while if you want to continue exercise things and see if it happens again.

[RobCranfill]

Cool, I will do that. I’ll try it from a cold boot and see what happens.

On Thu, Oct 7, 2021 at 11:45 Carter Nelson ***@***.***> wrote: See if you can recreate the issue. If so, we can continue to take a look. If not, then, yes, please close. Also, nothing really urgent here, so OK to keep this open for a little while if you want to continue exercise things and see if it happens again. — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#18 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ABLQHZRYWODJN5JNWSVYDNTUFXTETANCNFSM5FP5YOMQ> . Triage notifications on the go with GitHub Mobile for iOS <https://apps.apple.com/app/apple-store/id1477376905?ct=notification-email&mt=8&pt=524675> or Android <https://play.google.com/store/apps/details?id=com.github.android&referrer=utm_campaign%3Dnotification-email%26utm_medium%3Demail%26utm_source%3Dgithub>.

-- </rob>

[RobCranfill]

Cannot reproduce. Immediate cause of error, as mentioned above, was light_integration_time having a value of 4, which is not valid. I don't know how that happened, and I have not bee able to reproduce it.