Configuring HWI in C2000 RTOS

Nikhil Badami

I'm trying to make a very simple program using rtos to read in some data from a sensor. I know that when you try and add an Hwi to a sys/bios project, you need to do it through the app.cfg file. I did exactly this; I opened the file and navigated over to the Hwi menu. I then added a user defined hwi. My expectation was that this file would automatically generate a skeleton function in my main.c file for me to fill in, like it did with my taskFxn (I'm using the "typical" example project), however, it does not do this. My question is what I am supposed to do in my main.c file after I declare the Hwi in my app.cfg file?

over 9 years ago

0 Elizabeth Joy over 9 years ago

TI__Expert 5940 points

Nikhil,

I'm moving your post to the TI-RTOS forum so that the SYS/BIOS experts there can best assist you.

If you have questions specific to the C28x core in the future, please feel free to post those in the C2000 forum.

Thanks,
Elizabeth

0 Alan DeMars over 9 years ago in reply to Elizabeth Joy

TI__Mastermind 30830 points

The config tool does not generate skeletal functions in your main.c file. You must add the ISR function yourself. The function should have the name you entered for the function name using the config tool. The function must have this signature:

Void myIsrFunc(UArg arg);

The argument passed to the ISR function will be that which you entered with the config tool.

Alan

0 Nikhil Badami over 9 years ago in reply to Alan DeMars

Intellectual 290 points

Alan,

Thank you for your reply. In the GUI I said to have my function have zero arguments. Does this mean that I still have to define my function the way you did? Or can I define it as:

Void myIsrFunc()?

0 Alan DeMars over 9 years ago in reply to Nikhil Badami

TI__Mastermind 30830 points

If I understand you correctly, I think you've used the GUI to configure a value of zero to be passed as the argument to the function function. Your Hwi function should be defined with the argument:

Void myIsrFunc(UArg, myArg);

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Configuring HWI in C2000 RTOS