Quite correct, (I looked at the F628 datasheet after seeing this post) and I
do advocate following the datasheet.  In fact it says the same thing in the
F877 datasheet for TRISC<7:6>.  HOWEVER, in practise, this does not seem to
matter, as I have set Tx in some of my code as an output and the USART still
works absolutely correctly in both directions (and of this I am absolutely
certain).  The PIC seems to be asserting the pin direction when the USART is
enabled via SPEN.  Summing up, I really do not think this is the cause of
Lucian's problems.

Rgs
Ian

-----Original Message-----
From: pic microcontroller discussion list
[mailto:PICLIST@MITVMA.MIT.EDU]On Behalf Of piclist@XARGS.COM
Sent: Monday, 6 October 2003 2:34 am
To: PICLIST@MITVMA.MIT.EDU
Subject: Re: [PIC]: 16F628 USART Problem


On Mon, 6 Oct 2003, Ian McLean wrote:

> I think I can answer this one for you.  Tx is for PIC transmit, an output.
> The pin should be set as an output, not an input.

With most 16 series, both TX and RX must be set as inputs.  The
16f62x datasheet specifically states that TRISB<2:1> have to be set.

--
John W. Temples, III

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