unispa > Web interface > Peripheral > Calibration
Calibration
All analog inputs can be additionally calibrated by the user post-Maping. This is performed by providing a constant which is added to every value reading disregarding the unit of measurement.
Example
Assume a linear transformation of voltage range 0V - 3V on A0 pin to the respective measurements ranging from 140°C to -20°C
and a calibration constant of -1.5.
While the raw Mapping of 2.156V results into 25.0°C, the final reading is obtained by adding -1.5, thus arriving to 23.5°C.