topic Re: PE overrides the interrupt vector table in Classic/Legacy CodeWarrior

PE overrides the interrupt vector table

Ivand — Thu, 12 Jul 2007 17:45:14 GMT

I am using Processor Expert to init and generate Bean code, but i also have my own interrupt routines.

The problem is PE overrides my interrupt vectors and replaces it with the default vector address.

How can i instruct PE not to override the vectors i have set?

Setting the file properties to readonly doesn't help when you re-open CW.

Any help on this would be appreciated, thanks

Re: PE overrides the interrupt vector table

CrasyCat — Thu, 12 Jul 2007 18:00:51 GMT

Hello

If you are using ProcessorExpert to generate low level drivers and if you want to associate your own interrupt function for a specific interrupt you should proceed as follows:

- Add an Interruptvector Bean to your project

- Initialize the InterruptVector Bean with the appropriate InterruptVector name

- Specify the name of your interrupt function in the "ISR name" edit box.

Also if you are using your own interrupt function I assume you are programming one of the devices on the CPU yourself.

I would than also recommend you to marked the corresponding resources as used by an external device.

This can be done as follows:

- Open the Bean Inspector for the CPU bean

- Go to the Used Tab

- Look for the resource you are programming outside of ProcessorExpert (for instance I/O Port A)

and toggle its status from "ready for use in PE" to "Used by an external device".

I hope this helps.

CrasyCat

Re: PE overrides the interrupt vector table

Ivand — Thu, 12 Jul 2007 18:59:17 GMT

Cool, it did fix the problem

Many thanks!!