1983f31af9
This will enable us to transparently use different calibration for different board revisions. The 2.0.0 revision changes the sensing circuitry and will need its own coeffs. In this commit, both models are run in parallel for debugging.
25 lines
1,002 B
YAML
25 lines
1,002 B
YAML
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description: >
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Calibration coefficients for the soil sensing circuit. We have two polynomials whose input variable
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is the battery voltage in Volts. The evaluated polynomial corresponds to the estimated ADC value,
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assumed to be 10 bits, so in [0, 1024). The two polynomials are:
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dry: For estimation of the fully dry state, given the battery voltage
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wet: For estimation of the fully dry state, given the battery voltage
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Note that each poly coefficient is specified as 1000 times its real values. This is because we can't
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directly represent floating points in devicetree. The final evaludated value should be divided by
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1000.0f in code.
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compatible: soil-calibration-coeffe
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include: base.yaml
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properties:
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dry:
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type: array
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required: true
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description: The coefficients * 1000, as integers. 0th degree first, then 1st and 2nd last.
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wet:
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type: array
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required: true
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description: The coefficients * 1000, as integers. 0th degree first, then 1st and 2nd last.
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