CC2642R: Simultaneous I2C from Sensor Controller and Main CPU

James Dieffenderfer

Part Number: CC2642R

Hello, I have a quick question about utilizing I2C:

Is it possible to have two I2C ports running in parallel, with one being accessed by Sensor Controller and the other being accessed by the main CPU?

Thanks for the help!

over 2 years ago

0 Luis M over 2 years ago

TI__Expert 5345 points

James,

I'm sorry, but according to the CC2642R datasheet and the reference manual, there is only one I2C module available on this device, I2C0. This means that only one I2C "port" can be used by either the Sensor Controller or the main CPU.

I hope this helps.

-Luis

0 James Dieffenderfer over 2 years ago in reply to Luis M

Prodigy 30 points

Are you sure this is the case? I thought the sensor controller implemented some form of bit banging to accomplish I2C

+1 Luis M over 2 years ago in reply to James Dieffenderfer

TI__Expert 5345 points

You are correct. After a second look, the Sensor Controller is capable of I2C communication independent from the I2C0 module. In this sense, yes, they can run in parallel. I'm sorry for the confusion.

-Luis

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CC2642R: Simultaneous I2C from Sensor Controller and Main CPU