• My application seems to be dropping interrupts; does returning from an interrupt clear its pending flag?
    I'm working with a Cortex M4 (Freescale's Freedom-K64F dev-board). I'm trying to write a long sequence of data to flash. The state machine for this sequence operates in the interrupt handler. This means...
  • Cortex M4 exception return sequence
    Hi, I think I am just getting confused with this even if (or because of) I read the book and manuals again and again. At exception entry, the processor saves R0-R3, R12, LR, PC and PSR on the stack. Saving...
  • Cortex M0 - Returning from Interrupt
    Dear Concern I connected the CMSDK timer example with the Cortex - M0 processor. I have written exception handler for a timer in assembly code. After a certain moment interrupt is generated from the...
  • Cortex-M4 Suspend/Resume Interrupts
    Hi together, im am working on a project managing high IRQ/ISR loads. (NXP S32K14x) On some critical sections i have to suspend global interrupt mechanism (cpsid i) and resume afterwards. Is it necessary...
  • How to acknowledge/clear active interrupt in Cortex-M4
    Hi all, I'm testing interrupt on a Cortex-M4 based platform. So far I have managed to get my interrupt handler called. It clears the interrupt source coming from the peripheral. But before the pin to...