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6416 fail to respond the external Interrupt 4

Thomas Chen1
Prodigy 245 points

Hello,

        I met a strange problem of the external Interrupt. 

First, I use the CCS2.2 to build my code and it works well. The 6416 DSP can enter the function of external Interrupt.    

Second, I use the CCS3.3 to build the same code but the 6416 DSP failed to  respond the external Interrupt. I set a breakpoint in the function of external Interrupt and it can't stop at the breakpoint.  

Here are my project below. I don't know how to deal with the problem and seek for your help and advice. Thanks a lot!

6622.Interrupt_test.zip

  • 0
    TI__Guru* 84110 points

    Thomas,

    CCS 2.2 is very old. CCS 3.3 is no longer actively supported because it is old and has been replaced by CCSv4 and now CCSv5.

    Are you using DSP/BIOS for the project?

    The configuration methods between the two versions of CCS are different. There should be a migration document available on the TI.com site. Have you looked at any document such as this?

    The interrupt configuration is the most likely place where the problem can be fixed. You will need to look at the configuration parameters for the interrupt to figure out what is wrong. In your code you can confirm the values of GIE, IER, and IFR to let you know if the hardware is trying to assert the interrupt or not. What are the values of these?

    Regards,
    RandyP