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The Code for the Temperature sensor is based on its technical data (Bosch, 2024), where 0v = -30C[NOT VERIFIED]  45C  which linearly scales to 10v = 200C[NOT VERIFIED]80C. This means that linear interpolation is utilized to scale the input voltage too a an output in celsius.


Linear interpolation is performed with the following function (Chapra and Canale, 2015),


This means that the inputs needs to be,

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The coded implementation looks like this,Image Removed

Image Added


Which gives the following function block,

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References:


Chapra, S.C. and Canale, R.P. (2015). Numerical Methods for Engineers. 7th ed. New York: McGraw-Hill Education. [pdf] Available at: https://gdcboysang.ac.in/About/Droid/uploads/Numerical%20Methods.pdf (Accessed: 28 May 2024).

Bosch. (2024). BME688: Digital low power gas, pressure, temperature & humidity sensor with AI. [pdf] February 2024, Document revision 1.3. Available at: https://www.bosch-sensortec.com/media/boschsensortec/downloads/datasheets/bst-bme688-ds000.pdf (Accessed: 28 May 2024).