QMI8658 AttitudeEngine

[LazaroFilm]

Has anyone succeeded in using the AttitudeEngine internal fusion from the QMI8658?

[lyusupov]

AttitudeEngine in QMI8658 has been inherited with a license acquired from Fairchild... Are there some useful applications available for FIS1100 AttitudeEngine ? I don't know any.

[LazaroFilm]

I'm confused. I thought AttitudeEngine was outputting a fused sensor quaternion from the QMI8658. Does it not do that?

My understanding was that it would output a similar result as the BNO0XX which would offload the fusing algo load from your MCU.

[lyusupov]

AttitudeEngine is a registered trademark of Fairchild Semiconductor International (acquired by ON Semiconductor Corporation in 2016).

https://www.onsemi.com/download/application-notes/pdf/an-5083.pdf

[jake653]

The QMI8658C data sheet references Fusion and the XKF3 an external library for ARM processors (XKF3, developed in 2005 has been described to do auto calibration and plotting?) https://www.qstcorp.com/upload/pdf/202202/%EF%BC%88%E5%B7%B2%E4%BC%A0%EF%BC%89QMI8658C%20datasheet%20rev%200.9.pdf

the QMI8658A data sheet included in this archive doesn't reference fusion. I see some header files (waveshare "RP2040-Touch-LCD-1.28" and ESP32-S3 version have the best example source code I have found) that references fusion: extern void QMI8658_read_ae(float quat[4], float velocity[3]); // handler is defined in .C code unsigned char const attitudeEngineData; / brief Raw sample buffer. */

The Fairchild/On Semi XKF3 seem to have special licensing requirements, I'm hazy on what gets done internally and what is done by XKF3.

[LazaroFilm]

Yeah this has been frustrating. I even reached out to the manufacturer and have not received any answers.

[lewisxhe]

As for the posture engine, I contacted the chip manufacturer many times and made it clear that it cannot be used for open source and may involve patent issues. Question will be closed