• Cortex-M0+ core Hang up in FFFF FFFEh address when executing DSB instruction.

    Ponsuke606
    Ponsuke606

     Hi, I am porting FreeRTOS to my M0+ device now.

    I faced an issue CPU hang-up when DSB instruction executed.

    Then Program Counter showed "FFFF FFFEh" and Exc value of xpsr is 0x03. So, I knew Hard_Fault error interrupt is happened.

    But it has…

    • 2 months ago
    • Processors
    • Cortex-A / A-Profile forum