gnupic@linuxhacker.org

Too much hassles with PIC MCUs.  I'm thinking to switch to
Atmel's AVRs.

- Mengjin -

-----Original Message-----
From: byron@cc.gatech.edu [mailto:byron@cc.gatech.edu]
Sent: Tuesday, March 18, 2003 4:09 PM
To: jeffj1@hiwaay.net
Cc: byron@cc.gatech.edu; gnupic@linuxhacker.org
Subject: Re: Need help getting code onto 16F877A


> 
> On Mon, 17 Mar 2003, Byron A Jeff wrote:
> 
> >Jeff,
> >
> >I really think you should save yourself the headaches of trying to do it all
> >over again.
> >
> >First off is the simple fact that the 16F877A (note the A) has a different
> >programming algorithm that its predecessors. That's why none of the programmers
> >work for it.
> >
> >Secondly the job has already been done. Wouter van Ooijen's Wisp628 has 
> >everything but the programming socket:
> >
> >* Programs 16F87XA and 18FXXX parts
> >* High voltage
> >* ICSP connector
> >* Serial Interface
> >* Programming software written in Python, so it works on Windows and Linux.
> >
> >It's a no brainer. You can use your current programmer to burn a PIC16F628
> >for the project.
> 
> Thanks for mentioning the Wisp628; I didn't manage to come across it
> before. Unfortunately, I don't have a PIC16F628 on hand, and the software
> I use with the Warp-13a doesn't claim to support it (but if its a short
> enough program, I could call it a 16F84).
> 
> However, the source for Wisp628 is fairly easy to read, and I saw how my 
> code differed from Ooijen's. After enabling code protection on a couple 
> 16F84's, I was able to get my programmer to work. There are still some 
> bugs (like the code protection disable doesn't work), but I was able to 
> get a bootloader onto a 16F877A, so I'm happy.
> 
> Maybe not the best solution, but now I can at least say that I made a PIC 
> programmer, for what that's worth. I'll probably build a Wisp628 
> eventually.

Glad you got it going!

BAJ

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