operation will relinquish those resources. A function that implements a blocking read of a UART will not return until there is a character to read from the transmit data register. A non-blocking read wi
If you haven’t already been introduced to the concept, computing defines “blocking” and “non-
blocking” operations. A blocking operation will not relinquish any resources while it’s waiting for
an operation to complete. A non-blocking operation will relinquish those resources. A function that
implements a blocking read of a UART will not return until there is a character to read from the
transmit data register. A non-blocking read will return immediately with some kind of null or empty
value if there wasn’t a character to read. Write two functions: char UARTReadNonBlocking() and
char UARTRead() that implement these two ideas for the Nios UART. Each function only looks for
a single character. You can use plain old C for this question; no EIA is necessary.
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