I2C IBDR

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I2C IBDR

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prabhat_
Contributor III

I am trying to access the GPIO Expander which is at the address 0x43 on I2C bus 0 of the SoM module .i.e. MPX-S32G274A which uses the S32G274A uC. The I2C registers are taking the right values except the IBDR register. It always take the value as FF in both, the read and write operation.

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Bio_TICFSL
NXP TechSupport
NXP TechSupport

Hello prabhatp,

 

Those values are normal if you don't have anything connected to the expander.

Regards

 

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prabhat_
Contributor III

Thankyou for the reply sir, there has been another issue with the IBDR register lately. The IBDR register is taking absolutely no values except 0xFF. I got it why it is taking 0xFF but I am not able to understand why it is not taking any other value apart from that.

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