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Graphing CCS Version: 5.5.0.00077

Ant Scranney
Expert 1275 points


Hi all,

I am using the graphing feature in CCS v5.5 with a C2000, it seems to work quite nicely but I have a couple of questions:

1) Currently I am taking a screenshot of the graph data and then using the cropped image of the graphs.  Is there a way to either export the raw variable data to say a spreadsheet, or the graph data.  I have tried a couple of different options but had no success.

2) How accurate is the X axis time, as I have tried a few settings on this using the mS option but the calculations I made did not match a crude method I used with my phone in stopwatch mode.  Is there a known good setting for this someone can suggest?

Best regards,

Ant

  • 0
    TI__Guru**** 171309 points

    Ant,

    1) Check http://e2e.ti.com/support/development_tools/code_composer_studio/f/81/t/166520.aspx

    2) How are you exactly measuring this? The way I see is to have a very slow update rate in order to be able to measure it with a stopwatch (1 second or even slower).

    Regards,

    Rafael

  • 0 in reply to desouza
    Expert 1275 points

    Hi Rafael,

    Thanks for the link will look deeper into this first thing in the morning as later here now, but looks like this answer Q1.

    To answer your question regarding Q2, I perhaps did not make my question totally clear.

    I am using a PWM running at 25kHz, this is also used to trigger 4 ADC channels.  I have the debug set to refresh every 100mS.  I right clicked on 2 of the variables I am interested in and select graph, then in the a graph option I select mS for the X axis and set it to continuous refresh.  Then I hit the play/run button and at the same time I start my phone timer.

    After running for 2 minutes on the phone watch, I took a screen grab and then I tried to calculate the mS shown in the X axis.  This is where I had a problem as dividing 1000 into the values did not yield anything near the 2 minutes, however when I was watching the data stream hit 9000mS this correlated to 9 seconds roughly on my phone.  As I said a crude method but I was trying to make sense of the X axis, and this gives a 'ball park figure'.

    I don't have the exact screen grab now, and just wondering if there is a specific setup to get the exact time?

    Failing that I can replicate the issue with images of the settings I use and explain it a bit clearer tomorrow if this is not enough information?

    Cheers,

    Ant

  • 0 in reply to Ant Scranney
    Expert 1275 points

    Hi Rafael,

    Ok I have taken a couple of screen shots as having a few issues implementing the memory browser option, and have also tried to show the settings I am using for the graphing tool.

    1)  So the image below shows the memory browser screen capture, I am basically interested in storing the data from 2 variables (both doubles).  These are New_PW_In (memory address 0x00000708) and Old_PW_Out (memory address 0x0000070C), highlighted in the green box.

    I can find the memory location and view them constantly refreshing, the video link gives some indication of what to do but some of the settings are not really shown, so I am unsure if I am saving the correct information.  I also want to save roughly 10 minutes of data, and may increase this pending how I proceed.  I saved a .bin file but unsure firstly of the data content and also not found an easy way to open this yet, but that is another bridge to cross after I can get the data I want saved.

    Is there a better tutorial or some written documentation on using the memory browser to carry out the task I want to achieve, or can you provide a run through of what I need to do here?

    The image can be enlarged to read any detail that is necessary

    2) As mentioned already I have enclosed a further screen shot below. I again crudely timed 2 mins with my phone and trying to understand the units on the X axis, and how to give a meaningful value to them in relation to time?

    Regards,

    Ant