Using MpuPacker to Minimize Waste

The Cortex-M v7 MPU requires regions to be a power of two in size and aligned to their size. This can waste a lot of memory if they aren’t ordered efficiently. We developed our MpuPacker utility to help with this by optimizing the ordering and also recommending regions that can be reduced in size or …

Visio for Engineers

I had a terrible time when I first started using Visio. I found it to be non-intuitive and frustrating to use. In retrospect this was probably due to my being an engineer and the creators of Visio being graphic artists. What was intuitive to them was not intuitive to me. Over time, I have learned …

MPU Debugging with smxAware

smxAware was enhanced with new features to help debug issues related to the Memory Protection Unit in SecureSMX systems. These are covered here. The IAR debugger displays the MPU registers like this: RNR can be manually patched to the slot number to view, which then shows the RBAR and RASR values for that slot. A …