Hi.

I am working on similar project with 16f873 that I needed 2 uart one
Of them goes thru max232 19200 buad rate and the other one just receive
data at 9600 Buad rate. Since I am using i2c bus too to communicate with
24lc128
Eeprom I decided to use max4599 multiplexer which has 2 input one output
And control pin. In my application 2 uarts never going to work together
So having multiplexer to switch back and forward works for me. If you
figured it out different method other then spi or what I did please
Let me know maybe you are going to find better way of doing it.
Hope this helps

Andre Abelian


Hi All
i'm using pic16f876 with 2 serial ports , i used the built in usart for
com1
and used the software method in microchips application note for com2 ,
it
worked fine but i'm not happy with the program, it  ties me up and can't
use
the rest of the program freely .
I'm trying to make the other serial port by RB0 interrupt , when the
interrupt ocurs it sets the TMR0 to take 3 samples of the serial input
bits
to read and verify for errors , then i read it till the byte has been
received , then move it to the receive buffer and set a flag if EOT  has
been received. I check this flag in the main program loop and take
action .
I found out that there is another method to use the MAX3100 SPI to RS232
convertor chip , at slightly increased cost i can free my interrupt pin
and
TMR0 for other stuff .
Any ideas , comments , suggestions are welcome .
Thanx all

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http://www.piclist.com hint: The PICList is archived three different
ways.  See http://www.piclist.com/#archives for details.