i have seen some UART code implemented using BUFFER..... I have donE simple uart program using interrupt with lpc2148........ what is the advantage of using BUFFER
What "buffer" are you referring to?
Some UARTs have a built-in buffer - commonly called a "FIFO" - which, as Tamir says, can have the advantage of reducing the number of interrupts.
Your own software can also make use of a "buffer" - meaning some temporary storage where received characers can be held until the application is ready to process them.
It is very common to use a so-called "Ring" or "Circular" buffer with a UART - there are examples here on the Keil site, and Google will tell you lots about them...
good Answer andy neil.....
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