LAUNCHXL-CC26X2R1: analog differential input possible?

Wagner Chapman

I am trying to connect a 4-wire load cell to the the CC26X2R1 to use the ADC. In Sensor Controller Studio, how do I configure the pin layout for a sensor (the load cell) that has a differential analog output (meaning I need a differential input to the CC26X2R1)? The "adcSelectGpioInput" only has parameters for 1 pin, and the only differential option I see is for a differential output.

If differential input is not possible, do you have a recommended signal conditioner or other hardware (preferably with amplifier) to sit between the load cell and the CC26X2R1? Thanks!

Link to the load cell datasheet: www.farnell.com/.../2849896.pdf

over 1 year ago

0 Ryan Brown1 over 1 year ago

TI__Guru**** 202046 points

Hello Wagner,

Here is a link to the Sensor Controller Studio Help Documentation and ADC APIs. Unfortunately, the SimpleLink CC13XX / CC26XX devices do not support analog differential input on the ADC peripheral hardware so neither the Sensor Controller or ADC TI Driver will be capable of meeting this need. I recommend that you request IC recommendations on the Data Converters Forum.

Regards,
Ryan

0 Wagner Chapman over 1 year ago

Prodigy 10 points

Can the CC26X2R1 ingest an I2C signal? The only I2C example files in the SCS don't work with the CC26X2R1.

0 Ryan Brown1 over 1 year ago in reply to Wagner Chapman

TI__Guru**** 202046 points

Inside the Task Resources, find I2C Master under the Serial Interfaces.

You can copy over the project/code resources from a LaunchPad SensorTag Kit (LPSTK) example which demonstrates the use of the I2C Master for a SimpleLink CC1352R1.

Regards,
Ryan

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LAUNCHXL-CC26X2R1: analog differential input possible?