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Visitor II
May 27, 2025
Question

STPM34 calibration formulas troubles

  • May 27, 2025
  • 0 replies
  • 225 views

Hello! I try calibrate STPM34 device, but have some troubles.
I created some xmls file with Reference Manual and AN4470 and compare results by STPM3x_Evaluation_Software and it different. 
1) RM use default Vref value as 1.18, but App use 1.2
2) Calculation of PHC with PHV=2 different (it true if use formula for PHV=1)

Also I find errors in metrology coefficients calculation. metrology.c contains formulas with examples, but it results incorrect.

All troubles I placed to xmls file with all needed information.
Help me please, get correct formulas for calculation.
Thank!