Problems with JDM programmer

[ailgup]

Hello, I recently bought a JDM programmer from Ebay and have been trying to get it to work on my pc. When i plug in the programmer the green and red LED's turn on but when i insert my Pic16F688 the green led turns off but the red led remains on. Then I go and open Winpic800 and it says that the hard ware is seen, i can then read the chip (which already has data on it) but when i try to erase it it takes a second and says that it is erased but i can read it again and the data is still on the chip. When i try to write to the chip i get another error saying "Error -> Writing address 0x000000
Written : 0x0000 Read 0x3FFF"
I am wondering what i have done wring i believe that all the setting are correct if you could help me with this that would be excellent. I know that others have been able to get this to work and i was wondering what setting they used and how they did it

chris

[Mactayl]

Have you tried PICPgm 1.2.1.0, I use to use that and it worked fine for me, but I'm not sure it is setup for the tool you puchased. I made my own JDM programmer and I never had much luck with Win Pic 800

Thanks
Mac

[ailgup]

i have tried it but had the same problem :-(

[ctmal]

i have tried it but had the same problem :-(

How are you connecting it to the computer(are you using a serial cable?) I would try connecting it directly to the serial port. Just make sure the metal sheathing stays on if you have to remove the screws. I would also reboot the computer with the programmer plugged in. I've seen com ports act a little funny without a reboot.

[RPM]

Hello, I recently bought a JDM programmer from Ebay and have been trying to get it to work on my pc. When i plug in the programmer the green and red LED's turn on but when i insert my Pic16F688 the green led turns off but the red led remains on. Then I go and open Winpic800 and it says that the hard ware is seen, i can then read the chip (which already has data on it) but when i try to erase it it takes a second and says that it is erased but i can read it again and the data is still on the chip. When i try to write to the chip i get another error saying "Error -> Writing address 0x000000
Written : 0x0000 Read 0x3FFF"
I am wondering what i have done wring i believe that all the setting are correct if you could help me with this that would be excellent. I know that others have been able to get this to work and i was wondering what setting they used and how they did it

chris


Are you sure you have the chip in the socket correctly?
I know my JDM programmer is sometimes confusing as to which chip has pin #1 in which position, and when it's wrong I get similar errors.

[ailgup]

@rpm yes i read about the chip position and it saud to put ti with 10 rows in the front and 3 to the back
@ctmal yea i am using a serial port directly hooked up to the computer and even with the reboot i got the problem

[Jrd]

Not that I think you are and I do not know 100% what the error code is saying but just to clarify things. You are not trying to program the pic with the same firmware that is already on it are you?

Hmm, looking at your post again I see that you are still able to read the pic data that you just deleted (or so it says), Is there some sort of refresh in the program? Maybe the data you are getting is actually cached? Maybe you need to restart the program after you delete the data on the pic?

[ctmal]

Can you put up a picture of what programmer you have? Also, it might help if you post it with the chip in.
One last thing to try. Make sure you do not have the chip in when you start up the program. I'm not sure if it makes a difference with WinPic but it does with picpgm(this is the one I've used successfully).

[ailgup]

http://www.mcumall.com/comersus/store/catalog/JDM_MCUmall_290.jpgHere is my programmer and i am able to read the chip but just not delete or write.

chris

[ctmal]

Ok, that's the same one I have. Attached is a picture(excuse my art skills) on how the chip should go in(just in case). The white dot is pin 1. Also, make sure the two jumpers(circled in yellow) are set in the upper position(pins 2 & 3).

Also, I have had success using picpgm. I would use this since we know it works with it.

Do you have another pic to try? I just want to weed out the possibility that the pic is the issue.

[ailgup]

Ok, that's the same one I have. Attached is a picture(excuse my art skills) on how the chip should go in(just in case). The white dot is pin 1. Also, make sure the two jumpers(circled in yellow) are set in the upper position(pins 2 & 3).

Also, I have had success using picpgm. I would use this since we know it works with it.

Do you have another pic to try? I just want to weed out the possibility that the pic is the issue.

yeah i have tried all three of the pics i have and i have had the jumpers and chip position correct. I am also contacting mcumall the company i bought it from and they say that they think the chip is not being recoignized.

chris

[ailgup]

i tried it and i was able to auto detect all but one one chip (i think the other one is bad) but then i go to write it writes about 1/4 of the data and then when it goes to verify it and when it verifies it says complete but only 1/4 of the data is on the chip.

chris

[ctmal]

I'm pretty much at a loss but have you tried using another computer?

[ailgup]

I'm pretty much at a loss but have you tried using another computer?

ya tried two comps the major thing is that confusing me is that when i put in one of the chips it says
Checking connection of JDM Programmer ...
Error opening portio.sys driver for LPT access!
No PIC Programmer found! Check connection!
No PIC detected!

but all of the others work, the ren24 also worked before so i don't think the chip was bad (but dimming looked more like a strobe light than dimming) i am going to try them in the ren 24 and see what happens.
chris

[ctmal]

ya tried two comps the major thing is that confusing me is that when i put in one of the chips it says
Checking connection of JDM Programmer ...
Error opening portio.sys driver for LPT access!
No PIC Programmer found! Check connection!
No PIC detected!

but all of the others work, the ren24 also worked before so i don't think the chip was bad (but dimming looked more like a strobe light than dimming) i am going to try them in the ren 24 and see what happens.
chris

LPT access means its looking for the printer port for some reason instead of the com port. Can you set it up to look for com1 directly(or whichever com your plugging into) instead of autodetect?