Comments (2)
There are two problems.
The first problem, the one you ask, is a software design problem "how to avoid duplication of code". What I would suggest is to create an array of ccs811 objects. That way you can simply loop over them.
The second problem is a hardware problem. I2C devices have an address. On one I2C bus every address can only occur once! The ccs811 helps a bit: there is an io pin you can pull high or low and with that you can select between two addresses. In short one I2C bus has max two ccs811s.
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Thanks Maarten. I have changed my code to use an array and now loop the code which is single available.
While I do not have enough pins available (other sensors and muxes) yo create multiple I2C busses I now share the SCL pin between 4 css811 and have 2 different pins for SDA which are set in the loop. Works perfect.
May be I eventually will end up in using multiple NodeMCU, but for now it is ok.
Thanks.
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