This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

How to call functions in ISR using C28x assembly language instructions

Other Parts Discussed in Thread: TMS320F28035

I’m developing program using C28x assembly language instructions on TMS320F28035. As I programmed flash and run it, there is a fault when calling functions in ISR, as if program running out. I’m sure there is no problem about interrupt context saving and restoring as follows:

ISR_Service:

; Interrupt context save:

PUSH AR1H:AR0H                                                                

PUSH XAR2                              

PUSH XAR3                                

PUSH XAR4                                

PUSH XAR5                                

PUSH XAR6

PUSH XAR7

PUSH XT

;Interrupt code:

;call functions

;Interrupt context restore:

POP XT

POP XAR7

POP XAR6

POP XAR5

POP XAR4

POP XAR3

POP XAR2

POP AR1H:AR0H

IRET

The CCS version is 3.3.83.20. Please tell me the reason for this problem and how to deal with it. Thank you very much.