• State
  • Locked Locked
  • Replies 5 replies
  • Subscribers 82 subscribers
  • Views 706 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.

TMS320F28027: call a function from another project

Howard Zou
Genius 12365 points
Part Number: TMS320F28027

Hi, my customer has two projects loaded on one device, one is boot code, another is app code.

in boot code, there are global variables 'int a', array'int b[10]' and struct c defined.

funcA() will use 'a', funcB() will use 'b', and funcC() will use 'c'.

in app code, the customer will call funcA(), funcB() and funcC(). 

funcA can work exactly well, but funcB and funcC cannot be executed correctly, the value written to or read from 'b' and 'c' are incorrect, why does that happen?

  • 0
    TI__Guru 53055 points
    Hi Howard,

    Have you inspected the .map files of the two projects to make sure there aren't any conflicts in where both projects are placing code/data? When you step through the code, are the global variables being read from the expected locations? Are the global variables the only reason why the funcB() and funcC() don't execute correctly or do they appear to be executing totally incorrect code?

    Whitney
  • 0 in reply to Whitney Dewey
    TI__Genius 12365 points

    Hi, I've inspected that there is no conflict for these two projects.

    1. funcB() is dealing with global array, and funcC() is dealing with struct, for funcA() dealing with variable, there is no problem

    2. I cannot step through the function because the function is in another project. For example, I'm calling funcB() and funcC() in app project, but funcB() and funcC() are in boot project.

    Thanks.

  • 0
    TI__Genius 12365 points
    Looking forward to your answer.
  • 0 in reply to Howard Zou
    TI__Guru 53055 points

    Howard,

    I think I need more details. What goes wrong with function B and C? Do they at least return properly? Is it just the variable values are wrong?

    I know you can't exactly step through the C code, but judging by the disassembly window, do you have a sense that the call to these functions is taking you to the correct location?

    Whitney

  • 0 in reply to Whitney Dewey
    TI__Genius 12365 points
    Thanks, I'll take some actions and reply to you soon.