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Programming for the UART using Interrupts

Click on this: »C Code For Device Driver

The code fragment illustrates the complete set of four software routines needed to manage a pair of circular buffers for input and output to the UART.

If the UART has a single interrupt output for both send and receive events, then two of the four routines are combined with a software dispatch between their bodies.

15: (C) 2008-11, DJ Greaves, University of Cambridge, Computer Laboratory.