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Oleg Artamonov a5ce6deb02 cpu/cortexm_common: function to check address validity
2019-05-13 09:35:34 +02:00
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main.c cpu/cortexm_common: function to check address validity 2019-05-13 09:35:34 +02:00
Makefile cpu/cortexm_common: function to check address validity 2019-05-13 09:35:34 +02:00
README.md cpu/cortexm_common: function to check address validity 2019-05-13 09:35:34 +02:00

README.md

Cortex-M check for memory address validity

Introduction

Cortex-M3/M4/M7-based MCUs allow to check memory address validity by temporarily blocking BusFault handler.

Validity check can be used to determine RAM/flash/EEPROM sizes, peripherals availability, etc., to create firmware that runs effectively on different MCUs without recompiling.

NB: Cortex-M0 and Cortex-M0+ don't have BusFault events, all bus errors escalate to HardFault immediately.