Hello.
Why does the sensor read more than 4096? How can I not understand, help!
As you can see on the oscillogram Z is equal to 0x40F0 which corresponds to 4156 after the shift.
And this applies not only to the Z axis but to all axes.
Hello Den2life,
the value 4096 defines sensitivity per 1g. But the full scale you have set to 2g I presume. If you read on the output 4096, the acceleration is exactly 1g, if the device is correctly calibrated. If you read higher value, than 4096, the acceleration is higher.
Had you done the offset calibration?
Please take a look at the following example code, chapter 3. on NXP community:
https://community.nxp.com/t5/Sensors-Knowledge-Base/MMA8451Q-Bare-metal-example-project/ta-p/1127268
With Best Regards,
Jozef
