• State Resolved
  • Locked Locked
  • Replies 1 reply
  • Subscribers 80 subscribers
  • Views 741 views
  • Users 0 members are here
Support feedback
Options
Options
Related

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.

MSP430FR2111: Interrupt Compare Controller (ICC)

Gregory Duperon
Expert 8250 points

Part Number: MSP430FR2111
Other Parts Discussed in Thread: MSP430FR2155

Does the MSP430FR2111 have an Interrupt Compare Controller (ICC)?

If so, can you clarify preemption per the user's guide:

Is it possible to control preemption?  If not, is there are way to prevent another ISR from being executed before an ongoing ISR is complete?

  • 0
    Guru 325130 points
    The FR2111 does not have an ICC. (This would be mentioned on its web page and in its datasheet; see, e.g., the MSP430FR2155.)

    The paragraph marked above applies to devices without ICC. An interrupt is served only when GIE is set, and GIE is automatically cleared before the interrupt handler begins execution (and restored when the handler returns with RETI). So an interrupt handler can be preempted only when it explicitly sets GIE.

**Attention** This is a public forum