Use components from ISR - best practice

[user_1570836]

        Greetings, I have bought CY8CKIT-059 kit recently, its my first Cypress board. In a program, I need to access components defined in TopDesign.cysch from an ISR routine. I have defined a function (I don't remember in what .h file, the definition got deleted), placed its code to main.c file, and I am calling it from ISR defined in generated source file isr_updatereg.c . It is working how I need it, but as the function definition got deleted from .h file, I feel that I am violating some best-practice rules, or similar. How would you use components from ISR? I have attached related files in a ZIP archive.   

[Bob_Marlowe]

Welcome in the forum!

   

As a general rule of thumb: Do not tamper the generated source files. Never.

   

When accessing a component, best practice is to use the APIs provided. Open the component's datasheet and see how they work.

   

When posting code, easiest is to post your complete project, so that we all can have a look at all of your settings. To do so, use
Creator->File->Create Workspace Bundle (minimal)
and attach the resulting file.

   

You may tell us a bit more about what you want to perform with your -59 Kit.

       

Bob

[user_1570836]

I am building RGB led cube. I have 74HC595 shift registers in driver circuit, connected to PSoC using SPI. And I want to periodically update the registers, approximately each 120us.

[Bob_Marlowe]

Look into project corrections

       

Bob

[user_1570836]

Thanks, I will look at it tomorrow.

[user_1570836]

I understand changes in main.c . However, in archive, you sent me, I can't open TopDesign.cysch . Did you change anything in that file?

   

Thanks for your help.

[Bob_Marlowe]

Probably you do not run the latest Creator version which is 3.3 CP1. I strongly recommend to update using Cypress Update Manager.

       

Bob

[user_1570836]

That's true, I had 3.1 . Now it opened TopDesign correctly. I haven't noticed any differences....so, did you change anything? Or you just changed main.c ?

[Bob_Marlowe]

I only changed main.c and have re-generated the sources.

       

Bob

[user_1570836]

OK, thanks for your help. How can I mark your post as verified answer?

[Bob_Marlowe]

Don't know how to flag, I ask questions here too seldomly,   😉

       

Bob