Links
Thanks!
Many thanks for so many people posting great things about how the ARM stuff works:
Adam Green’s Crash Catcher/dumper
cyrilfougeray firmware-logs-with-stack-trace
The very nice ARM CMSIS library
M7 links
other links about using the armv7-m MPU for stack protection or just nice overviews of exceptions:
memfault arm-cortex-m-exceptions-and-nvic
memfault fix-bugs-and-secure-firmware-with-the-mpu
embeddedcomputing using-a-memory-protection-unit-with-an-rtos-part-2
arm usefulness-of-mpu-in-a-non-os-system
feabhas setting-up-the-cortex-m34-armv7-m-memory-protection-unit-mpu