SYS BIOS Clock function Swi and ISR

Samuel Maedjaja

Other Parts Discussed in Thread: AM3352

Hi,

I would like to configure one of the AM3352 system clocks as 'clock function' to trigger Swi and run a specific ISR when it expires. I was able to configure this clock function using the GUI from app.cfg, to specify the duration and the ISR function to fire. However, I am not sure on where this ISR function resides. Does the GUI automatically create the prototype of this ISR anywhere? Or do I need to create the ISR function myself? I appreciate some inside on how to do this. I have yet to find an example that shows this operation.

I am using SYS/BIOS V6 with CCS V6.

Thanks,

Sam

over 10 years ago

0 Ashish Kapania over 10 years ago

TI__Mastermind 21645 points

Hi Sam,

By ISR function, are you referring to the clock function one needs to specify in the Clock instance settings in the GUI ?

If yes, then the clock function you set in the Clock instance settings needs to be defined by the application and will be periodically called by the clock module (or called once if clock running in one-shot mode). The clock function is run in Swi context (on the ISR stack but not as an ISR) and has the following signature: