medium10 pts · first answer countsembedded-cregisters

Bit-fields for hardware registers

A colleague maps a peripheral register with a C struct of bit-fields. What is the main risk?

A.Bit-fields always use more flash than masksB.Bit order, padding and access width are implementation-defined, so the layout may not match the hardwareC.Bit-fields cannot be declared volatileD.Bit-fields only work with signed types

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Bit-fields for hardware registers

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