Lpc2000

At 09:11 PM 2/25/05 +0000, peterburdine wrote:
>I just wish they gave you a way to know how many bytes are in the FIFO
>(at least the tx fifo).  In my drivers I just keep track of how many I
>put in, and they when I get THRE I reset the count to zero.

Why?  If you are doing a polled transmission I could see the use for a FIFO 
full flag but for interrupt driven you can stuff the FIFO faster than you 
can remove a byte from it at most baud rates.  Even for polled transmission 
I don't see much loss of efficiency (if there were you could easily switch 
to interrupt driven).  I don't see any use for a FIFO count and I've not 
seen a UART with a FIFO that has one.

Robert



" 'Freedom' has no meaning of itself.  There are always restrictions,
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