Offset with Veml7700 driver
Throows opened this issue · comments
The issue
Hi,
I noticed a bug with the veml7700 driver.
I tried to calibrate my VEML7700 component from a reference lux meter, but I have noticed the veml gives a result 10 times higher than the real value.
There is a bug in the formula to convert step to lux.
Which SDK are you using?
esp-idf
Which version of SDK are you using?
v5.1-dirty
Which build target have you used?
- esp32
- esp32s2
- esp32s3
- esp32c2
- esp8266
- other
Component causing the issue
veml7700
Anything in the logs that might be useful for us?
No response
Additional information or context
I have made research and I found the minimal resolution for the VEML7700 is 0.0036 step/lux (Application note Page 5)
Actually on the driver the minimal resolution is 0.036 ( raw * 36 / 1000).
so the define VEML7700_RESOLUTION_800MS_IT_GAIN_2_DIV is wrong
I can provide more information if needed.
Thank you, Romain
Ressources :
Confirmation
- This report is not a question nor a request for drivers.