CCS/TMS320F28335: Illegal ISR when using DELAY_US routine in TImer isr

Part Number:TMS320F28335

Tool/software: Code Composer Studio

Hello all,

I have been using timer0 and i tried to give a delay of 1 micro second and it keeps ending up in the illegal isr. I don't know why it is happening. If I don't use the delay routine then it works just fine.

Any idea why it behaves like this?

Regards,

Akhil Pillai