> I knew about that, but at this point, I'm just trying to get a signal on TX 
> to make sure that part is working.  If bytes get lost it is not a problem 
> yet.  I did change it to check that flag just in case my overflows were 
> turning off the USART or something like that.
>
> Now, TXIF is never being set, so I'm never even trying to transmit (and of 
> course have no signal on TX).
>   
why starting so difficult,
where there are dozens of working RS232 libraries available for free ?

Stef

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