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From: "Matt Foster"
Subject: Re: RS232 newbie - in need of assistance!
X-Newsreader: Microsoft Outlook Express 6.00.2720.3000
Date: Sat, 4 Jan 2003 14:55:42 -0000
NNTP-Posting-Date: Sat, 04 Jan 2003 14:55:34 GMT
Organization: blueyonder (post doesn't reflect views of blueyonder)
I don't get why I should swap the resistor and switch round? Please explain.
"Frank Bemelman" wrote in message
> "Matt Foster" schreef in bericht
> > Right - my design (I'm stciking with MAX232 and PIC16F84)
> > http://matthewfoster.myby.co.uk/lousyattempt.jpg
> > I think this is OK - anyone see problems?
> Why not putting the led on RB5, to avoid the mentioned
> problems with RA4. And the switches to ground, and the
> resistors to +5V.
> If you use RA1 for Transmit and RA0 for Receive you can
> use this software to test your idea:
> There is a c-file there, but also a hex-file, needed to program
> the PIC16F84. Once that all works, it should spit out the
> alphabet on your terminalscreen. Then you can move on to the *next*
> step, making the software for your buttons etc.
> Frank Bemelman
> (remove 'x' & .invalid when sending email)
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