Not getting ACK from FXOS8700C

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Not getting ACK from FXOS8700C

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nishant1
Contributor I

Hi,

I am having trouble getting an ACK from the FXOS8700C. It seems like it should be pretty straight forward. I am using the BRKT-STBC-AGM01 with my own MCU and even tried two boards in case one was damaged. I referenced this post as well: https://community.nxp.com/message/926172?q=BRKT-STBC-AGM01%20connections 

My connections on the below board:

J3.1, J3.3 - Vdd (3.3V)

J3.2, J4.5 - GND

J3.4 - SCL

J3.5 - SDA

Pinout.JPG

Here is the scope capture:

pastedImage_2.png

I cannot communicate to either sensor. My board communicates fine to other connected sensors. 

Any ideas? Thank you. 

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1 Reply

1,307 Views
nishant1
Contributor I

GPIO on MCU needed to be configured as Open Drain, it was previously configured as Push/Pull. Hopefully this can help someone else in the future!

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