• Usefulness of MPU in a non-OS system
    Hi. We are developing a product which has to achieve some safety requirements. The system is quite simple, non-OS, running in a Privileged mode only on a Cortex-M4. I would like to implement a Memory...
  • CM4: Is DAP immune to MPU protections?
    Can the DAP cause exceptions by performing illegal instruction in spaces protected by MPU or is it immune? Trying my hand at setting up MPU but I cannot get it to fire - thought it might not be possible...
  • CM4: Write buffer with enabled MPU
    Hello, I have a question regarding Memory protection unit on Cortex M4 (STM32F3 MCU). This is pretty simple single core MCU without caches. I implemented MPU based on instructions in Definitive guide...
  • MPU is not triggering MemFault or HardFault
    MPU is not triggering MemManage fault. I want to protect a memory region of 64 bytes starting from 0x20000000. I've configured the MPU registers accordingly, but when I write in a protected memory location...
  • Blink Newbie help debug!
    Hi Forum. I'm new to ARM, but have experience with AVR. I'm just trying to make a Hello World with blinky LEDs. I have this board: https://forum.micropython.org/viewtopic.php?t=3086 So ok, everything...