MPU9250

Mohsin Mahmud

Other Parts Discussed in Thread: TM4C123BH6ZRB

Hi there,

I have a query about MPU9250 sensor. I have been using MPU9150 sensor library with TM4C123BH6ZRB for a year. Today I was trying to using the same MPU9150 sensor library with MPU9250 but it doesn't work. According to Invensense (maker of MPU9250), MPU9250 is fully compatible with MPU9150. Can you please explain me the possible reasons for it and how I can fix it. Thanks

Regards,

Moh

over 8 years ago

0 Amit Ashara over 8 years ago

TI__Guru**** 244400 points

Hello Mohsin

Did you check with an oscilloscope if the I2C transactions are appearing on the bus correctly?

0 Mohsin Mahmud over 8 years ago in reply to Amit Ashara

Intellectual 610 points

Hi Amit,

Thanks for reply. I have checked on the scope. I can see I2C transaction and but problem i that 'm not getting interrupts. I have conformed the wiring. It looks fine to me. It gets stuck on the MPU9150AppI2CWait call after the MPU9150Init. Kindly advise me on that. Thanks

0 f. m. over 8 years ago in reply to Mohsin Mahmud

Guru 11940 points

According to Invensense (maker of MPU9250), MPU9250 is fully compatible with MPU9150.

...

I have conformed the wiring. It looks fine to me. It gets stuck on the MPU9150AppI2CWait call after the MPU9150Init.

Kindly advise me on that.

I think you have to investigate the validity of those claims by Invensense.

A detailed comparison of the datasheets (especially the I2C addresses) would be a good start.

0 Amit Ashara over 8 years ago in reply to Mohsin Mahmud

TI__Guru**** 244400 points

Hello Mohsin,

Can you please paste a scope snap[shot of the transaction?

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MPU9250