Re: Problem with reading MPU-6500 by STM32

79617129 · ‎2024-08-05

I can get the right WHO_I_AM(0x70) from mpu6500 by i2c,but I cant read other register or write other register.I cant read the gyroscope/accelerometer . whats more ,i changed some mpu6500,and it doesnt work.

Andrew Neil · ‎2024-08-05

So what investigation / testing / debugging have you done to find what's wrong?

https://community.st.com/t5/community-guidelines/how-to-write-your-question-to-maximize-your-chances-to-find-a/ta-p/575228

A complex system that works is invariably found to have evolved from a simple system that worked.
A complex system designed from scratch never works and cannot be patched up to make it work.

Tesla DeLorean · ‎2024-08-05

Which STM32? They make a handful these days..

Did you explicitly start the device? Most IMU need to be configured in a mode of operation and started.

Perhaps look at other examples of use, say GitHub for Flight Controller type code, etc.

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Andrew Neil · ‎2024-08-05

Note that the MPU-6500 is not recommended for new designs:

https://invensense.tdk.com/products/motion-tracking/6-axis/mpu-6500/

A complex system that works is invariably found to have evolved from a simple system that worked.
A complex system designed from scratch never works and cannot be patched up to make it work.