hard20 pts · first answer countsfirmwareuartdma

Receiving frames of unknown length

A modem sends replies of unknown length at 921600 baud. Byte-by-byte interrupts lose data under load. Which receive design is most robust?

A.Polling the UART data register from the main loopB.Circular DMA buffer plus the UART idle-line interruptC.One DMA transfer sized for the longest possible replyD.A higher interrupt priority for every received byte

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Receiving frames of unknown length

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