gnupic@linuxhacker.org

Subject: Re: A bit of Catching Up
From: Wojciech Zabolotny
Date: Tue, 21 Oct 2003 10:01:03 +0200 (CEST)

On Mon, 20 Oct 2003, Martin McCormick wrote:

> 	One last more general question:  Has anyone tried using one of
> the USB-based serial RS-232 ports to drive a PIC programmer?  I don't
> know how critical the timing is on those ports, but I bet they are
> slightly different than what one finds on a serial port connected
> directly to the bus, like Comm1 and Comm2.  The only things I have
> used USB-driven RS-232 ports for are remote terminals and the control
> of a radio receiver that has an RS-232 control port.  Those
> applications showed no difference from the bus-mounted serial ports.
>

If the programmer uses the serial port with the standard RS232
communication protocol, there should be no problem. If you want to control
the state of each line ("dummy programmer") then the latencies may be too
high :-(. (Probably it should be possible to fix the problem with
additional delays in the software, but I don't know if it works)

-- 
		HTH,
		Wojtek Zabołotny