Em 3/2/2010 16:23, Isaac Marino Bavaresco escreveu:
> Em 3/2/2010 15:42, Dwayne Reid escreveu:
>   =

>> Good day to all.
>>
>> I'm about to look at a project where I need to communicate with 3 =

>> serial devices.  All 3 ports will be communicating at 38,400 =

>> baud.  Although all three ports need to be able to receive data =

>> simultaneously, transmission can be to one device at a time.
>>   =

>>     =

> Too bad, if it was the contrary, two simultaneous receive and three
> transmit, you could use some PIC18F or the new enhanced PIC16F with two
> UARTS, plus one interrupt-driven transmit-only UART. At this speed it
> would be hard to do software UART receiving, but transmitting would be
> possible (using a large percentage of CPU time though).
>   =


Worse, the new enhanced PIC16F devices with two UARTs are future
products yet.

More than one UART only in PIC18F (2 UARTS max.), PIC24H (2 or 4 UARTs)
and PIC32 (2 or 6 USARTs).


Regards,

Isaac
__________________________________________________
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