• State Accepted Answer
  • Locked Locked
  • Replies 14 replies
  • Subscribers 349 subscribers
  • Views 19583 views
  • Users 0 members are here
Options
How was your experience today?
This discussion has been locked.
You can no longer post new replies to this discussion. If you have a question you can start a new discussion

Cortex-M4 interrupt priority dynamically change while in ISR

Adnan Ashraf

Hello,

I am using STM32F407ZGT6 Cortex-M4 microcontroller. I am interested in changing the priority of a certain interrupt while servicing the same interrupt. Is that possible?

More elaborately, lets say I have an interrupt which has a priority of 4. The interrupt has arrived and I am currently in the ISR servicing that interrupt. After running a certain code (in the ISR), I want to run the remaining code (in the ISR) to run at higher priority (say 2). And when I was about to leave the ISR, I again change its priority to 4. Is this possible?

Currently, I have achieved this by calling a higher priority interrupt inside the lower priority interrupt.

Thanking in anticipation for your time and help.

0