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PICList Thread
'TROUBLESHOOTING WITH ITU PIC-PROGRAMMER'
1998\03\20@190335 by Wilson Tam

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Hi there.  I am a student who just began using Microchip PIC microcontrollers.
I've purchased a pic programmer kit from ITU Technologies.

After soldering the components to the PCB, and connected it to my PC, I tried
burning a hex file into a PIC16F84.  However, I encountered some programming
problems.  Specifically, the programming software read my file and asked me
to "insert the PIC chip and press any key to start programming".  I did that,
and the
LED on the programmer did blink, but immediately it gave me a message: "ERROR
in programming!".  Could someone tell me where its going wrong.  I have already
tried this on several PCs and the same error comes up.  I'm pretty sure the
soldering job and the DB-25MF cable (which I had to buy individually!) must not
be the problem.  I have e-mailed ITU representative, and it seems like they are
not willing to help much, so could anyone from PIClist tell me what's going
wrong?  I've been on NEUTRAL gear for two weeks already, and I need to get
started with this!  Thank You.

1998\03\20@191218 by ndie Ohtsji [4555]

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Hi Wilson,

I haven't used this programmer, but here are some general things to
try/check:

1) Is the PIC inserted the right way?
2) Do a blank check on the PIC.
3) If the PIC is not blank, then erase PIC
4) Try to erase PIC several times
5) Try to Read data from the PIC

Regards from B.C.

-Randie
spam_OUTrohtsjiTakeThisOuTspamglenayre.com


{Quote hidden}

already
> tried this on several PCs and the same error comes up.  I'm pretty sure the
> soldering job and the DB-25MF cable (which I had to buy individually!) must
not
> be the problem.  I have e-mailed ITU representative, and it seems like they
are
> not willing to help much, so could anyone from PIClist tell me what's going
> wrong?  I've been on NEUTRAL gear for two weeks already, and I need to get
> started with this!  Thank You.
>

1998\03\21@102911 by Frank Mckenney

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From Wilson Tam <wilson.tamspamKILLspamUTORONTO.CA>, the following:
> Hi there.  I am a student who just began using Microchip PIC
> microcontrollers.  I've purchased a pic programmer kit from ITU
> Technologies.
>
> After soldering the components to the PCB, and connected it to my PC, I
> tried burning a hex file into a PIC16F84.  However, I encountered some
> programming problems.  Specifically, the programming software read my file
> and asked me to "insert the PIC chip and press any key to start
> programming".  I did that, and the LED on the programmer did blink, but
> immediately it gave me a message:  "ERROR in programming!".

I'm currently using an ITU programmer (the pre-assembled version) with
no serious problems.  At first I used the ZIF socket, but I built an ISP
cable and added a few components to the breadboard so don't have to keep
pulling and re-inserting my 16F84 (;-).

However, I have seen the error message you refer to (among others).

The first thing I'd suggest checking is your circuit.  I've been burned
a few times by solder joints that looked good - but weren't.

The next thing I'd look into would be timing.  The parallel port
programming is timing-sensitive, and if you're not running in a "true"
DOS environment, you can have problems with other system activity.  In
my case, MPASM and PICPRG8X.EXE run in a DOS VDM under OS/2; works fine
most of the time, but heavy disk activity (e.g.  starting Netscape/2
(;-)) can trigger a programming failure.  Not serious in my case - I
just re-run PICPRG8X.

But... if you're running (say) MSWin95, you might try restarting in "DOS
without Win95" mode and see if you get different results.

Hope this helps...


Frank McKenney            / OS/2 Advisor (OS2BBS)
McKenney Associates       / Richmond, Virginia / (804) 320-4887
Internet: .....rrs0059KILLspamspam.....ibm.net / TalkLink: WZ01123

1998\03\23@103742 by Norm Cramer

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I think I know the solution to your problem.

I think the problem is the cable.  You said that you bought a cable.  The
cable must be short since the programmer is subject to noise problems.  My
cable is only 3 ft long.  The other issue for the cable is that the
connector shells must be grounded.  A friend built one and till he did
this, he could not program chips, he could read them fine but could not
program them.  When we connected the shells to ground, everything worked
great.  ITU says to use a cable no longer than 6 feet.  I recommend using a
cable as short as you can live with.

Funny that ITU is not willing to help, I have never had a problem with
thier support.  They were always prompt in responding to my problem.  They
didn't allways have the answer but they did get back to me quickly.

Hope this gets you going.

Norm

At 09:50 PM 3/20/98 -0500, you wrote:
>Hi there.  I am a student who just began using Microchip PIC
microcontrollers.
>I've purchased a pic programmer kit from ITU Technologies.
>

<snip>

>  I'm pretty sure the
>soldering job and the DB-25MF cable (which I had to buy individually!)
must not
>be the problem.  I have e-mailed ITU representative, and it seems like
they are
>not willing to help much,

<snip>

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