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Original question:

LDC1612EVM: Communication protocol between PC USB host and MSP430 on LDC1612EVM

LDC1612EVM: Communication protocol between MSP430 on LDC1612EVM (2022)

Ian Fischer
Prodigy 10 points
Part Number: LDC1612EVM

Hello,

I am having trouble establishing a connection between MSP430 on LDC1612EVM. I am attempting to use the USB virtual serial port communication interface of MSP430 on LDC1612EVM with my own python script to poll the sensor data. I have tried using the provided code from the [FAQ] Inductive sensing FAQ - Frequently asked questions , but none of the data is being transmitted. 

It is returning this for all commands:

> return ff 00 4c

I have read that the FAQ is using the protocol from an older version of the firmware. I was wondering if there was a way to downgrade to this firmware or if there is a repository of updated code that works on this latest firmware. 

I greatly appreciate any help that can be provided.

Ian

  • 0
    TI__Mastermind 18545 points

    Hello Ian, 

    Sorry you are having this issue. I have a couple questions that can help debug this issue: 

    • Is the return the same for all register write commands as well? Is the CRC coming back correctly after the register writes? 
    • When you read the data register values are you reading the registers individually or using the streaming command? 
      • If you are reading individually, are you also reading the status register as well?

    Thank you, 

    Justin Beigel