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12 lines
454 B
Markdown
12 lines
454 B
Markdown
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# Cortex-M check for memory address validity
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## Introduction
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Cortex-M3/M4/M7-based MCUs allow to check memory address validity
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by temporarily blocking BusFault handler.
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Validity check can be used to determine RAM/flash/EEPROM sizes,
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peripherals availability, etc., to create firmware that runs
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effectively on different MCUs without recompiling.
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NB: Cortex-M0 and Cortex-M0+ don't have BusFault events, all
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bus errors escalate to HardFault immediately.
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