WEBENCH® Tools/LMP91000: How to connect Arduino DUE with LMP91000EVM

Prakshaal Jain

Prodigy 120 points

Part Number: LMP91000

Tool/software: WEBENCH® Design Tools

I want to perform cyclic voltammetry using Arduino DUE and LMP91000EVM i.e. the evaluation module of LMP91000.

I found some library on github as well but am unable to connect as it lacks details. I don't have an SPIO4 board.

over 5 years ago

0 Kelvin Le THS over 5 years ago

TI__Expert 6475 points

Prakshaal,

We don't formally support Ardunio DUE for LMP91000EVM. Can you give me more specific details on your problem?

Are you able to read the registers using I2C?

As a general guideline for debugging:

I would recommend breaking down the problem into smaller pieces and debug one block at a time. Start from a point where you know it should work and

go from there.

-Kelvin

0 Prakshaal Jain over 5 years ago in reply to Kelvin Le THS

Prodigy 120 points

Thank you for your response.

How to use LMP91000EVM without SPIO4 Board?

I choose Arduino DUE because it supports I2C communication and am making a standalone system to read data from the Vout.

0 Kelvin Le THS over 5 years ago in reply to Prakshaal Jain

TI__Expert 6475 points

Prakshaal,

You should be able to talk to the LMP91000 with the SPIO4 board. Please read the user's guide:

www.ti.com/.../snau121a.pdf

Pay close attention to the schematic notes.

At the end of the day, you will use I2C to read/write to the LMP91000 registers. Connect your arduino I2C pins to the LMP91000.
Start with reading the registers. See if you can at least read the registers first. The LMP91000 datasheet has more information about the registers BTW.

-Kelvin

0 Prakshaal Jain over 5 years ago in reply to Kelvin Le THS

Prodigy 120 points

Thank you for your response.

I am able to read and write the registers, and want to perform cyclic voltametry using three electrode setup, it is not a sensor but three electrodes.