• Interrupt Priority with Cast R8051
    Hello; I'm using uVision to simulation a Cast R8051. I've noticed that setting the IP SFR (0xB8) does not change the interrupt priorities, but instead enables INT0A, INT1A, and INT2-7. The Cast documentation...
  • Serial Interrupt Priority
    I am using Port 0 to write to an LCD and Port 1 to communicate over my RS485 network. The data on the RS485 is more important than writing to my screen. I can set my serial interrupt priority to high...
  • Interrupt priority in C51
    Hi, I need some more information regarding the interrupts priorities in 8051. If a low priority interrupt occurs while a high/low priority interrupt service routine is running, Is the low priority...
  • Interrupt priority query
    I am currently using timer2 count a number of preset timeouts on an AC waveform for an AC regulator. I have given timer2 the highest interrupt priority, but have found that occasionally timer1 (used...
  • Interrupt priority levels:
    Note: This was originally posted on 16th June 2010 at http://forums.arm.com I feel this is probably documented somewhere, but I'm failing to find it, so here goes. Let's say I have 2 interrupts/exceptions...