Gas sensor not returning values

[timiman]

Using a recently bought Enviro+ -possibly with ADS1115, on Rpi 4 B and having installed all the required packages. It was working just fine for two days, Then I'm started getting the error below when trying to gas.read_all().

Sample code I use:

#!/usr/bin/env python3
from enviroplus import gas
try:
    while True:
        try:
            # Get gas readings
            readings = gas.read_all()
            oxid = readings.oxidising
            oxid = "{:.2f}".format(oxid)
            reduc = readings.reducing
            reduc = "{:.2f}".format(reduc)
            nh3 = readings.nh3
            nh3 = "{:.2f}".format(nh3)
            readingCounter+=1

            if readingCounter > warmupreadings:
                #Send to DB (enviroment table)

            time.sleep(timeout)
        except Exception as exc:
            time.sleep(timeout)
            logging.info('Generic Exception 1: ', exc)

except Exception as exc:
    pass

The error is:

--- Logging error --- Traceback (most recent call last): File "/usr/local/lib/python3.7/dist-packages/i2cdevice-0.0.7-py3.7.egg/i2cdevice/init.py", line 250, in get_field value = field.adapter._decode(value) File "/usr/local/lib/python3.7/dist-packages/i2cdevice-0.0.7-py3.7.egg/i2cdevice/adapter.py", line 26, in _decode raise ValueError("{} not in lookup table".format(value)) ValueError: 7 not in lookup table

During handling of the above exception, another exception occurred:

Traceback (most recent call last): File "gas.py", line 32, in readings = gas.read_all() File "/usr/local/lib/python3.7/dist-packages/enviroplus-0.0.4-py3.7.egg/enviroplus/gas.py", line 83, in read_all setup() File "/usr/local/lib/python3.7/dist-packages/enviroplus-0.0.4-py3.7.egg/enviroplus/gas.py", line 50, in setup adc_type = adc.detect_chip_type() File "/usr/local/lib/python3.7/dist-packages/ads1015-0.0.7-py3.7.egg/ads1015/init.py", line 170, in detect_chip_type while self._ads1015.get('CONFIG').operational_status == 'active': File "/usr/local/lib/python3.7/dist-packages/i2cdevice-0.0.7-py3.7.egg/i2cdevice/init.py", line 233, in get result[field] = self.get_field(register, field) File "/usr/local/lib/python3.7/dist-packages/i2cdevice-0.0.7-py3.7.egg/i2cdevice/init.py", line 252, in get_field raise ValueError("{}: {}".format(field.name, str(value_error))) ValueError: data_rate_sps: 7 not in lookup table

The other sensors of Enviro + are working just fine. Is it a hardware error or a python3 error ?

--==UPDATE==-- Removing and resitting the enviro+ did not fix the issue. But, uninstalling and installing the library (0.0.4) fixed the issue. I remember that lately there was an update in python3 library on Rpi 4B. Could it be a compatibility issue ?

[Gadgetoid]

Could it be a compatibility issue ?

It's possible the right version of the ads1015 library wasn't installed, though it should have been installed automatically with the library.

You're not the first person to have missing/broken dependencies, though, how did you install the library?

[timiman]

You're not the first person to have missing/broken dependencies, though, how did you install the library?

Both times I used the: git clone https://github.com/pimoroni/enviroplus-python cd enviroplus-python sudo ./install.sh

Up to now, sensors readings are fine.

[Gadgetoid]

Thank you - I might have to run a few tests to make sure that installer isn't breaking in some weird way.