gnupic: Programming 16F877 for a newbie
Subject:
Re: Programming 16F877 for a newbie
From:
Yann Ramin ####@####.####
Date:
10 Jan 2001 06:58:49 -0000
Message-Id: <01010923022400.24463@atp.atpn.com>
On Tuesday 09 January 2001 09:34 pm, Mike wrote:
> > Hey all. Got a question I'm hoping to get a pointer on.
>
> I'm very new to PIC's, and this semester I've got a class that'll be using
> them. From what the prof was saying we'll be using the F877 in the lab.
> I'm thinking of buying a couple to diddle with here at home. The question
> is what'll be the easiest route for me to program these beasts once I get
> 'em?
>
> I saw that gpasm supports 'em, and gpsim shows at least partial support.
> But that's not the part that's got me wondering. What I'm unsure of is how
> do I get the program into the chip itself?
I've been using the El Cheapo type programmer (DOS software only last I
checked, so I kept a good 486 around to prevent me having to taint my machine
and leave FreeBSD:)). The Myke book even includes a PCB for it (which I
horribly messed up, so I redid it in vectorboard). Its a very good book, and
your class may even use it.
The El Cheapo runs on a parellel port but uses the ICSP programming
functions. It is pretty robust, and for its added complexity compared to
other serial types, it works well. Info can be found here:
http://www.myke.com/picmicro.htm
>
> I found the link to picprg2.2 - that looks like the best bet for programing
> software I've come across so far. I also found the patch for the 2.2
> kernel. I'm running 2.4.0 - will the patched version still work for me?
>
> In the same message, there are directions on doing LVP with an F877 after
> another patch to picprg. So if I'm understanding things correctly as long
> as picprg will still work with the 2.4 kernel I should be good to go with
> basically the following:
> - a 16F877 chip
> - gpasm
> - picprg2.2 patched with 1) the 2.2 parallel code and 2) the programming
> code (0x18) for the F877
> - a parallel cable with a 1k resistor between RB7 and pin 2 of the cable
> - switched 5V to Vdd on the F877
>
> Does that all sound about right?
>
> I certainly appreciate all the work that's gone into all these tools.
> Hopefully in the near future I'll be able to give something back.
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Yann Ramin ####@####.####
Atrus Trivalie Productions www.redshift.com/~yramin
AIM oddatrus
Marina, CA http://profiles.yahoo.com/theatrus
IRM Developer Network Toaster Developer
SNTS Developer KLevel Developer
Electronics Hobbyist person who loves toys
When smashing monuments, save the pedstals -- they always come in handy.
-- Stanislaw J. Lem, "Unkempt Thoughts"
"Outlook not so good." That magic 8-ball knows everything! I'll
ask about Exchange Server next
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