• State TI Thinks Resolved
  • Locked Locked
  • Replies 5 replies
  • Answers 1 answer
  • Subscribers 48 subscribers
  • Views 1710 views
  • Users 0 members are here
Support feedback
Options
Options
Related

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.

INA226EVM Tool setting

na na78
Guru 16770 points
Other Parts Discussed in Thread: INA226EVM

Hi

We are using INA226EVM for evaluation.


Now, we can get log roughly every 1.3s like following.

Time Vbus Vshunt Current Power
0.338034 15.8375 0.079435 791.875 12520.625
1.60116 15.76125 -0.079328 -792.95 12542.5
2.881288 15.83625 -0.079265 -799.875 12493.75
4.146414 15.77125 -0.079203 -792.575 12670
5.419542 15.83875 -0.079305 -800 12531.875
6.676668 15.79875 -0.079995 -793.1 12506.25
7.915792 15.76875 -0.079245 -792.825 12672.5
9.177917 15.76375 -0.079323 -792.675 12664.375
10.475047 15.77 -0.0793 -792.875 12505.625
11.737174 15.765 -0.080018 -793.1 12666.875
12.990299 15.765 -0.0796 -799.65 12499.375
14.266427 15.7625 -0.079235 -793.1 12531.25
15.483548 15.825 -0.079205 -800.275 12508.75
16.745674 15.7675 -0.07961 -792.85 12667.5
18.010801 15.83875 -0.079233 -800.425 12486.875
19.295929 15.80125 -0.079995 -792.7 12660
20.564056 15.84125 -0.079753 -793.4 12486.25
21.823182 15.76875 -0.079805 -792.45 12541.25

We want to get log with more finely interval (e.g. 10msec).

How to get more finely intervals?

BestRegards

  • 0
    TI__Genius 15770 points

    Hi na na78,

    Usually customers download the LAbView source code of the EVM Software and modify the logging intervals. How are you extracting the 1.3s log?

    Regards

  • 0 in reply to Mayrim Verdejo
    Guru 16770 points

    Hi Mayrim

    Thank you for your reply.

    We got log using INA226EVM Software.

    The following is the image how we got log.

    Select Graph tab, and click "Continuously Poll Data", then Logged.

    We want to make the interval of logging shorter.

    BestRegards

  • 0 in reply to na na78
    TI__Genius 14825 points
    Unfortunately the SM-USB-DIG runs at a slow rate and that is the limiting factor here. The current EVM software runs as quickly as it can doing what it does. The source code is available for labview and you may be able to trim a little bit of time off by eliminating features you don't really use, but again, the SM-USB-DIG controller is pretty slow.

    By slow, I should clarify, I mean the time between commands is long, not the communication frequency which I believe is running at 400kHz.
  • 0 in reply to Jason Bridgmon
    Guru 16770 points
    Hi Jason

    Thank you for your reply.

    We understand that constraint is caused by SM-USB-DIG and the constraint can not be changed.

    We want to monitor the current following capability using EVM.

    Do you have ideas?

    BestRegards
  • 0 in reply to na na78
    TI__Genius 14825 points

    There are places to hook up your own SCL and SDA lines.  Perhaps you have a controller board that is not the SM-USB-DIG that can run faster and take the data you need?  In the past, I used an FPGA to collect some data at high speed; is there something like that you have available?