TMS320F28032: Disabled interrupts, the program will be called accidentally when running

Shaoxing Ke

Expert 3590 points

Part Number: TMS320F28032

Hi Every one,

Disabled interrupts, the program will be called accidentally when running, What occasions can cause this situation?

over 4 years ago

0 tlee over 4 years ago

TI__Guru 62975 points

Is this related to your other thread?

e2e.ti.com/.../tms320f28032-while-running-program-there-is-a-periodic-reset-signal-the-reset-period-is-about-24ms

0 Shaoxing Ke over 4 years ago in reply to tlee

TI__Expert 3590 points

Hi tlee,

this is another question, I want to know the difference between an illegal interrupt and a program entry to an interrupt that is not enabled? Under what circumstances will cause the above two phenomena?

0 tlee over 4 years ago in reply to Shaoxing Ke

TI__Guru 62975 points

Shaoxing,

I am interpreting your reference to "illegal interrupt" as the Illegal-Instruction trap interrupt. This is triggered when the CPU tries to execute an invalid instruction.

Disabled interrupts are masked under normal operation and there is typically no way for the system to trigger them. Exceptions would be the INTR instruction that you encountered in the other thread, or an improper implementation of nested interrupts.

-Tommy

C2000™︎ microcontrollers

C2000 microcontrollers forum

TMS320F28032: Disabled interrupts, the program will be called accidentally when running