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How does HWI work well with NDK2.0？

Chan Xie
Prodigy 20 points


Hi all,

I am using NDK 2.0 for my work，but it seems that HWI task can‘t wok with NDK.

I create a hwi task for uart1(RS232) receive interrupt .It works well without NDK,so I think my HWI task is OK.

But once NDK task is created,the interrupt hadler function was not executed. 

From the view of Registers,I found the interrupt  was trigged.

Dose anyone know the reason for this?

thanks for your reply.

  • Prodigy 220 points

    Hi Xie,

              I have the same problem like yours. Did you solve the problem? If so, how did you do to confront that ?

             Thank you for your reply.

    Sincerely,

    Yuan.

  • in reply to Yang HsiYuan
    TI__Mastermind 45025 points

    Hi,

    Can you please let me know the following information?

    • which version of BIOS are you using?
    • which version of XDCtools are you using?
    • which hardware platform are you using?
    • Are you also using NDK 2.0 or a different version?

    Thanks,

    Steve

  • in reply to Steven Connell
    Prodigy 220 points

    Hi Steve,

              There is another thing that I use RJ45(ethernet) to receive instead of RS232.

              And I use........

              BIOS 5.33.05

              hardware platform OMAPL137

              NDK 2.0.0.0

    Thanks,

    Yuan

     

  • in reply to Yang HsiYuan
    TI__Mastermind 45025 points

    It's possible that you have a conflict with your interrupts.  The NDK uses interrupt vectors 6 and 7 for RX and TX EMAC functions, respectively.

    Is your program using these interrupt vectors by chance?

    Steve

    P.S. you can see more about this issue on the NDK FAQ: http://processors.wiki.ti.com/index.php/Network_Developers_Kit_FAQ#Q:_It_seems_that_the_NSP_for_OMAPL137_EVM_is_incompatible_with_the_EDMA3_LLD._How_can_I_fix_it.3F

     

  • in reply to Steven Connell
    Prodigy 220 points

    Hi Steve,

        I use my interrupt service routine with HWI_INT8.

        It seems not to conflict with 6 & 7.

        Or I get wrong with some things?

        Thank you for your reply.

    Sincerely,

    Yuan

  • in reply to Yang HsiYuan
    TI__Mastermind 45025 points

    Can you put a break point at hardware interrupt 8?  And see if your program hits that break point?

    You can do this by typing "hwi8" into the disassembly window.  Then you can right click and select "add break point"

    Steve

  • in reply to Steven Connell
    Prodigy 220 points

    Hi Steven,

        When I set a break point at my ISR of hwi8. It can hit the break point, but the network doesn't build up successfully.

        Can you indicate that how is the program written with the network part roughly? If I want to send a simple sequence (like "123456") with the ISR.

        Thank for your reply.

    Sincerely,

    Yuan

  • in reply to Yang HsiYuan
    TI__Mastermind 45025 points

    Hi Yang HsiYuan,

    The Ethernet driver has 2 different ISR - one for receiving packets, and the other for transmitting packets.  These use vector 6 and 7 respectively.

    Yang HsiYuan said:
    If I want to send a simple sequence (like "123456") with the ISR.

    Can you explain this a bit more? Do you mean that you want to send "123456" via a network transfer?

    Also, regarding the breakpoint at HWI8, I meant if you just run your program with just the networking part enabled, without your other additions, do you hit the break point at HWI8?  I'm wondering if something else is using HWI8.

    You can set a breakpoint at HWI8 (not at the ISR mapped to it) similar to the following screenshot:

    Steve