read device id of fxos8700,but always return 0

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read device id of fxos8700,but always return 0

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sofia_0571
Contributor II

all

before read device id, microchip set fxos8700 rst pin to low.cannot found issues where is it.

by the way use i2c interface to read/write data.just now read https://www.nxp.com/docs/en/errata/FXOS8700CQER.pdf  .i2c have same issue? tks.

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TomasVaverka
NXP TechSupport
NXP TechSupport

Hi David,

I am not sure if I fully understand your question.

There is no problem to read the WHO_AM_I register (0x0D) using the I2C interface:

I2C+Read.JPG.jpg

As you can see, it returns the correct value 0xC7.

I hope it answers your question.

Best regards,

Tomas

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