hard20 pts · first answer countsmicrocontrollersdebuggingcortex-m

Imprecise bus fault address

A Cortex-M4 reports an IMPRECISERR bus fault, and the stacked PC points to code that cannot have caused it. Why, and what helps find the real culprit?

A.The write buffer let the CPU move on; set DISDEFWBUF while debuggingB.The PC is always wrong for bus faults, so read stacked R12 insteadC.The flash contents are corrupt, so erase the chip and reflash itD.Imprecise faults only happen while a debugger is connected to the chip

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Imprecise bus fault address

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