sgp30 not found [resolved]

[iceelon]

hello again ...
trying to put an sgp30 into operation for measurement...

Code: Select all

Traceback (most recent call last):
  File "<stdin>", line 22, in <module>
  File "/lib/spg301.py", line 70, in __init__
RuntimeError: SGP30 Not detected

I think it's on this line

Code: Select all

 featureset = self._i2c_read_words_from_cmd([0x20, 0x2f], 0.01, 1)
        if featureset[0] != _SGP30_FEATURESET:
            raise RuntimeError('SGP30 Not detected')
        self.iaq_init()

[scruss]

what's your wiring?
does I2C.scan() see the device?

[iceelon]

hello
If everything is correct, it is well connected, it detects the device... but nothing continues to give an error in that part... I downloaded the documentation of the sensor to see if I can see where to go...

[karfas]

If everything is correct, it is well connected, it detects the device

This makes no sense at all for me. "If everything is correct, it works" - yes, we all assume that.
But DOES it work ? Do you get the correct address from i2c.scan() ?

... but nothing continues to give an error in that part

When "nothing" gives you an error, there is no error at all

Serious: What do you get back in featureset[0] ? Maybe you got a slightly different SGP30 sensor.
What do you expect to get back (according to the datasheet) ?

[iceelon]

hello

The library expects a value of 0x20 exactly but sensor returns 0x22 which would indicate “better” featureset than what’s required.



it works now....