• State TI Thinks Resolved
  • Locked Locked
  • Replies 3 replies
  • Answers 1 answer
  • Subscribers 79 subscribers
  • Views 161 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

MSP430FR6047: EVM430-FR6047 flow volume - DEBUG

ido amgar
Intellectual 420 points
Part Number: MSP430FR6047
Other Parts Discussed in Thread: MSP-FET, MSP430FR50431

Hello
I perform an experiment on the EVM6047 so once I connect it normally, burn your demo code to it, open a GUI and get flow values of 50 (see image)

After that I switch it to EXTERNAL,connect 3v external power, connect it through the MSP-FET and debug, I stand on the value that shows the flow values among other things and I get much higher values

Why don't I see 50 liters per hour as expected?
Is there another value that shows the final flow values?

thanks

  • 0
    TI__Mastermind 31095 points

    Hi，

    Do you mean what you seen in the CCS is not matching the value in GUI?

    In CCS, the iq16VolumeFlowRate saves the data in IQ16 format. You need to divided the data by 2^16 to get the actual data. In your picture, iq16VolumeFlowRate = 3934092, So, 3934092/2^16 ~= 60.03LPH.

    Best regards,

    Cash Hao

  • 0 in reply to Cash Hao11
    Intellectual 420 points

    Ok now I am trying this experiment on our card which contains MSP430FR50431
    Here is our scheme of the signal reading part:

    The problem is that I am reading values that do not match the flow values, contrary to what I read in the EVM6047

    1) Do you have any idea why this is happening? Is this a code problem?
    Correct me if I'm wrong, but the 6043 demo code and the 6047 demo code are the same in that respect, right?
    2) Is this a hardware problem? Do you see anything wrong with the scheme I attached?
    (we used a scheme of 6047)

    These are the values I get, it seems that there are readings but like noises.. not really water readings.
    (there should be a flow of about 60LPH)

  • 0 in reply to ido amgar
    TI__Mastermind 31095 points

    Hi,

    Okay, you are using FR50431 on your board. It requires some modifications in the SW to use with FR5043. Please follow the attached guide for the changes. And please be noticed, this guide is using gas meter demo for example. Some part of it may not need to change for water meter demo. 

    5758.MSP430FR5043_SW_Changes.zip

    You can send out the ADC capture data here from both your board and EVM board at the same flow rate with the same transducers and pipe. They suppose to get similar ADC capture data. 

    Best regards,

    Cash Hao

**Attention** This is a public forum