Um, off the top of my head, no. Doesn't the data sheet (and all the app notes and sample
code) specify that both the Tx & Rx pins should (counterintuitivly) be set as inputs? Of
course, this is from memory. Either way, a diode and pull up resistor would take care of
it either way.

P.
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Harold Hallikainen wrote:
>
>         I'm considering using the UART in a PIC for a simple master/slave
> network between two PICs. I'm hoping to send data half-duplex on one
> wire. I'm thinking of just tying the Tx and Rx pins together. Normally
> the TRIS bit on the transmit line would be high. When a PIC needs to
> transmit, I'd set the TRIS low, send the data, then put TRIS high again.
> Will that work? Does a high TRIS float the USART transmit pin?
>
>         Thanks!
>
> Harold
>
> FCC Rules Online at http://www.hallikainen.com/FccRules/
>
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