Author Topic: read but not writing (Read 5842 times)

whitetop · « **on:** January 18, 2011, 07:40:05 AM »

built this
https://www.acidmods.com/forum/index.php/topic,22283.0.html
resistor help from matt/hyper

i got it to read but it will not write and will not detect device but still reads the chip lol
have i got it right as i did this from matts pic and the diagram

Famas · « **Reply #1 on:** January 18, 2011, 07:56:54 AM »

check youve soldered to the write serial connector points just double check everything and best of luck to ya mate

hyper999 · « **Reply #2 on:** January 18, 2011, 08:27:44 AM »

when it reads is it reading all zeroes?

jdm programmers are a pain.

possible fixes/causes based on my experiences...
-try another chip
-try another programming program
-double, triple, quadruple check your wiring (i will have a look when i get a chance)
-make sure youve got the right serial port if you have more than one

i'm sure theres more but i cant remember il update if i think of anything.

whitetop · « **Reply #3 on:** January 18, 2011, 08:32:53 AM »

tryed every option you said hyper but i dont get how it detects the chip but not the device. not all zeros on code i got 000/001/002/003/000/000

i would take a pic but will take some time since i used my wifes old pc cos mine dont have com port

i did what matt said on a different thread and change to jdm still same.

Famas · « **Reply #4 on:** January 18, 2011, 08:37:46 AM »

what program u using bud

whitetop · « **Reply #5 on:** January 18, 2011, 08:42:42 AM »

winpic and mplab

hyper999 · « **Reply #6 on:** January 18, 2011, 08:46:43 AM »

try winpic800?

whitetop · « **Reply #7 on:** January 18, 2011, 08:54:36 AM »

ill try that after and report back.

Famas · « **Reply #8 on:** January 18, 2011, 08:55:26 AM »

i use the program from pic kit or winpic 800 best of luck mate

whitetop · « **Reply #9 on:** January 18, 2011, 09:16:22 AM »

well i was going to get the pickit2 but no one in uk on ebay that sells them and amazon stupid prices

Famas · « **Reply #10 on:** January 18, 2011, 09:18:22 AM »

im uk and you can get a simple usb one from ebay for 13 pounds

Modded Matt · « **Reply #11 on:** January 18, 2011, 10:21:45 AM »

you used the wrong bread board. look closely at your bread board, it conects holes vertiaclly in groups of three, there you have your socket placed, it looks like the cips pins are shorted together. you are going to have to cut the copper between each pin leg to isolate it. use a continuity meeter to make sure you severed the contact completly.

whitetop · « **Reply #12 on:** January 18, 2011, 12:21:04 PM »

yeah i noticed it when i did the first resistor and the socket and i put the socket the wrong way so before i did anything else i changed it and cut the copper trace so it would not short.

hyper999 · « **Reply #13 on:** January 18, 2011, 12:22:42 PM »

do that ^
i would also consider de-soldering a rebuilding a bit neater....
also make sure the serial cable you are using has all the pins connected, some dont.
and make sure you have the connections to the serial connector the correct way round?

i hate JDM programmers there are so many things that can go wrong and they dont give any real feadback

whitetop · « **Reply #14 on:** January 19, 2011, 06:52:44 AM »

done it all still only reads not writes ill just get a pickit

hyper999 · « **Reply #15 on:** January 19, 2011, 07:03:35 AM »

hmm if you want i could reverse engineer

the one i used to use and you should be able to build it with the parts you have..

whitetop · « **Reply #16 on:** January 19, 2011, 07:15:10 AM »

na im ok ill sell a few games to my bro that i dont play then buy it saves taking it out of my savings

my wires are the same as matts on his picture
my lead has all wires as i made sure before buying it.
i think its just the wifes crappy pc as it reads the chip but nothing else.

Modded Matt · « **Reply #17 on:** January 19, 2011, 07:38:51 AM »

its funny you say that... somehting is def wrong. this programer should not read. it doesnt support anykind of debug. you should get blank sectors if you try to read this programmer. this is a write only device.

HiddenVenom · « **Reply #18 on:** January 19, 2011, 07:43:05 AM »

Wouldn't it be funny if by some accidental error, this actually worked

?

Bye bye buying programmers

.

Modded Matt · « **Reply #19 on:** January 19, 2011, 07:46:53 AM »

look close at the diagram, see the red dots? those are conections, see the wires that pass over without a red dot? those are not conections.

without having it in my hand to test it, its had to diagnose, but I can confirm 100% this programer will write to the 12f683

whitetop · « **Reply #20 on:** January 19, 2011, 07:53:49 AM »

thx matt but i know were to connect and were not to.

its 12v
wires in right places
reads but don't write
i used winpic/mplab

so for it to read its got power but don't want to work.

Modded Matt · « **Reply #21 on:** January 19, 2011, 07:56:53 AM »

lol it should read blank!!!

is winpic set for jdm?

sorry man I dont know what else to say.

whitetop · « **Reply #22 on:** January 19, 2011, 07:58:52 AM »

it reads blank yes

yes in settings

its ok hyper gave a good place in uk for a pickit 2.

Famas · « **Reply #23 on:** January 19, 2011, 08:22:01 AM »

theres a pic kit 2 on ebay 20 quid bidding want a link its deffo in uk also

whitetop · « **Reply #24 on:** January 19, 2011, 09:31:04 AM »

Quote from: Famas on January 19, 2011, 08:22:01 AM

theres a pic kit 2 on ebay 20 quid bidding want a link its deffo in uk also

ive seen it mate items in china but its cheaper on me and quick from were hyper said and his had stuff from there so ill trust it but thx anyway

Hazer · « **Reply #25 on:** January 22, 2011, 06:25:14 AM »

Actually, the number one reason why people have problems with JDM programmers is the physical serial port itself. These only work 100% on VERY old desktops that have +13V/-13V true serial ports. This is pre-WINXP models. You can forget about laptops. Anything since 2001 is a hit or miss with the serial port, even on desktops.

And the next part is the OS. XP requires an additional serial port driver. ICProg required portIO.dll to be installed. WinPIC800 had its own XP driver that did not play nice with portIO, and also confused things. And I have yet to get WIN7 to work with hardly anything. It wont even play nice with my USB PickKit2.

Which brings me back to the PickKit. Since it is a native USB device, it works more often with newer OS and hardware systems (though I would stay away from USB3 motherboards, been ifghting that to the point I am going to get a replacement Mobo). JDM will work, but I would suggest finding an older desktop simply for running that.

hyper999 · « **Reply #26 on:** January 22, 2011, 08:03:32 AM »

i managed with a vista setup using a PCI slot serial port

and also hazer i have had no problems with my pk2 it has always worked flawlessly with win7

Hazer · « **Reply #27 on:** January 22, 2011, 06:42:50 PM »

Quote

i managed with a vista setup using a PCI slot serial port

I had one of those too, but a bad PSU took it out. That is one of the best ways to get a decent serial port in otdays rigs. The point I was making is that for the past 10 years, most Mobos rarely have a serial port anymore, and even those have been 5/-5V ports.

Quote

and also hazer i have had no problems with my pk2 it has always worked flawlessly with win7

The problem I am having is that I decided to get the newest (not latest) USB3 motherboards when I upgraded recently. I keep having a ton of USB problems. I am at the point now where I am going to get another one that is non-USB3 and replace it.

whitetop · « **Reply #28 on:** January 23, 2011, 09:53:21 AM »

ive not had problems with mine just not so fast in moving stuff to my pendrive so i just stick with the usb2 good thing i had one thats usb2/3

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Author Topic: read but not writing (Read 5842 times)