Calling firmware function TPMS_WAVG

Nikola73 — Tue, 03 Feb 2026 21:03:49 GMT

Hi,

I am using the FXTH87 and want use TPMS_WAVG from firmware functions.

I am Testing, for example TPMS_WAV with u8PNew= 4, u16POld=2, u8Avg=2.

Response TPMS_WAVG (4, 2, 2) = 513.

Response for other values:

TPMS_WAVG (4, 8, 2) = 516

TPMS_WAVG (2, 1, 4) = 128

TPMS_WAVG (2, 8, 2) = 260 etc.

This does not match the formula from the FXTH87xx22 Embedded Firmware User Guide from section 3.2.46 : UINT16 TPMS_WAVG(UINT8 u8PNew, UINT16 u16POld, UINT8 u8Avg).

Help me please understand how it works .

Re: Calling firmware function TPMS_WAVG

TomasVaverka — Tue, 29 Dec 2020 08:08:10 GMT

Hi Nikolay,

According to our TPMS SW engineer, there is an issue in the implementation of the function, so the returned values are not correct.

We are going to update the Firmware User Guides to add a note warning not to use the function.

Best regards,

Tomas

topic Calling firmware function TPMS_WAVG in Sensors

Calling firmware function TPMS_WAVG

Re: Calling firmware function TPMS_WAVG