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Could not obtain valid waveform from TI CCS4 graph

Bojian Cao
Prodigy 90 points


Dear all, 

There are issues which prevent me viewing the correct signal. 

Tool used and software: 

Hardware: TI Piccolo F28027 ControlStick

Software: CCS V4.02 

Issue: (Please refer to the picture I posted, I have my graph configuration, watch window and graph listed)

Have issue to view Start Address A (value 100, double) and Start Address B (value 0, double). I could view the value change in the watch list. However, the graph is not correct especially Start Address A . 

Could anyone give me a hand?

Thanks!

  • Prodigy 90 points

    I tried different Q value, buffer size and data type, but I did not find a good solution 

  • TI__Guru**** 171349 points

    Hi,

    I am unsure what may be happening in this case, but I have some comments/tips:

    - If the variables are double - i.e., floating point, why are you displaying them as 16-bit integers?

    - some of the CCSv4.0 releases had severe issues to display graphs, especially dual graphs. I would be careful using such an old release.

     If the changes to the parameters do not fix the display, you could try to get a CCSv5.5 or v6.0.1 to see if you can load the .out generated from the v4 project and display the graphs properly.

    You can use a newer release without interfering with your previous one if you install CCS in a different directory and use a different workspace. Also, if you import the project, make sure to create a backup copy (CCS projects are not backwards compatible, therefore opening your existing project in a v6 session will render it unusable in v4).

    Hope this helps,

    Rafael