|
Hi,
How are those chips called ??? ...
That would certainly help to know it ...
did you test your Pickit with a "valid" chip after that ??? to be sure there's no problem on its side.
Also have a look to the Microchip " Midrange manual " $ 28 ( ICSP Programming )
Alain
************************************************** ***********************
Why insist on using 32 Bits when you're not even able to deal with the first 8 ones ??? ehhhhhh ...
************************************************** ***********************
IF there is the word "Problem" in your question ...
certainly the answer is " RTFM " or " RTFDataSheet " !!!
*****************************************
|
sorry, they are 18F1320 chips.
Ive tested the programmer with other chips on different programs it it works, it just as soon as I program this program to a chip its stuck there for good. Ive fixed the program by re-enabling MCLR so that the programmer can stop the program.
But ive still got 3 PIC chips that have the un-fixed program and cant seem to clear them.
i'll have a look for the Midrange manual u mentioned
"I think fish is nice, but then I think that rain is wet, so who am I to judge?" - Douglas Adams
|
Alredy seen ... halas.
Ahhh,
18F1320 ...
I had reprogramming problems with some of them ( still have one which definitly "locked" after ~ 20 reprogrammings ) Thread posted here.
The second one took service back two Picstart plus revisions later...
Batch is 05250SE ...
Tried three programmers : Picstart+, ICD2 and a ( trustable ) "custom one" ... same behaviour.
Microchip never answered anything about that ...
Soooo, I'd encourage you to turn to another pin for pin compatible chip ( 16F88 i.e. ... )
Alain
************************************************** ***********************
Why insist on using 32 Bits when you're not even able to deal with the first 8 ones ??? ehhhhhh ...
************************************************** ***********************
IF there is the word "Problem" in your question ...
certainly the answer is " RTFM " or " RTFDataSheet " !!!
*****************************************
|
I don't think that's the issue. I did this test: Grabbed a brand new, never used 18F1320 and programmed and old program on it and it worked, programmed a different program and it worked, then programmed the program posted in my OP and now the chip cant be read by PicKit2. The program runs, but I cant change or erase it.
"I think fish is nice, but then I think that rain is wet, so who am I to judge?" - Douglas Adams
|
I was just reading a thread on another forum ...
http://www.electro-tech-online.com/m...1320-dead.html
They came to the conclusion that erasing it with a JDM type programmer seemed to work, when the PICkit2 wouldn't..
<br>
DT
|
Nice work as usual Darrel. This is exactly the problem I am having. I did google it but I guess I wasnt using the right key words.
So I guess the moral of the story is: 18F1320+TMR1(w/ext clock)+MCLRE_OFF = bad
Too bad I dont have a JMD programmer. I guess i'll see if its worth building one just to revive these 3 PIC chips.
"I think fish is nice, but then I think that rain is wet, so who am I to judge?" - Douglas Adams
|
I have found that a Microchip ICD2 can program any part - properly (and can debug too). Even though it costs more, the time saved in debugging a programmer problem is worth it. And it programs EVERY PIC.
Charles Linquist
Members who have read this thread : 0You do not have permission to view the list of names.
Posting Permissions
Bookmarks