Mplab 7.10 ???? - Page 3 - Electronic Circuits Projects Diagrams Free

Kryten · 7th May 2008, 03:35 PM

so your saying that it might not work at all

Kryten · 8th May 2008, 09:43 AM

Quote:

Originally Posted by blueroomelectronics

A loopback test will only check the connections, the timing or latency is not checked. USB to RS232 is only an emulation and as such may not be 100%
In my experience only one USB to RS232 adapter works perfectly and that's the expensive Digi (I/O networks) ones.

Well all that are sugested works so i geuss i dont have a USB-to-serial-adaptor that will work with the ICD2 (I do have a old desktop PC with Serial but I dont know wheter it still works) HMMMM what to do.

**3v0** · 8th May 2008, 10:43 AM

Quote:

Originally Posted by Kryten

Well all that are sugested works so i geuss i dont have a USB-to-serial-adaptor that will work with the ICD2 (I do have a old desktop PC with Serial but I dont know wheter it still works) HMMMM what to do.

If you want to finish the project see if you can get the desktop fired up. Last time I checked MPLAB still worked with win98. Might be handy to have around as a control box anyway.

Or buy the USB based PICkit2 or Junebug that will work with your laptop.

Kryten · 8th May 2008, 11:13 AM

Well its part of my final project so Im going to have to get it working.
I allready hav a PICKit2 to run from my laptop (school bought it for me

).

And as far as i know i can program tha 18f4550 from the PICKit2 som im actually ok there. Just need to get the ICD2 Clone working so I can write about it...

**3v0** · 8th May 2008, 11:33 AM

Quote:

Originally Posted by Kryten

Well its part of my final project so Im going to have to get it working.
I allready hav a PICKit2 to run from my laptop (school bought it for me

).

And as far as i know i can program tha 18f4550 from the PICKit2 som im actually ok there. Just need to get the ICD2 Clone working so I can write about it...

There must be a working windows box with serial at school. They should have piles of them that are too slow for everyday use. MPLAB 7.X runs fine on 600 and even 400 MHz boxes if you do not have anything else running. I think I have 8.01 running on my 600MHz laptop. Can not check, it is out on loan.

When you find the box you still have to debug the ICD2. We have been over this many times in the days prior to PICkit2. As said earlier, do the loopback test without a processor first. Do it at the RX TX processor pins to check the wiring all the way to the processor. That with a working processor/crystal should allow the ICD2 connect even if other things are not quite right.

In general ICD2s are not too difficult to get working. I have an assortment of them including several powered by a single 1 amp voltage regulator set to 13V, I did not have to generate VPP from RS232.

Bill got me started with his Junebug and the ICD2s are mostly paperweights.

Kryten · 8th May 2008, 11:38 AM

The loopback test without the PIC (read loop in the socket for PIC) works but im not able to connect to ICD2 (Im using bills Bootlader and have a external power on the ICD2)

But at my school they sell out the old computers that they er changing to teachers only ( i have tried to get one without any luck)

edit:
But thinking of it it might be the crystal that are not working properly. Is there any way to check it? or it might be an ide to actually connect it !?!?!?!

blueroomelectronics · 8th May 2008, 12:07 PM

The crystals a good guess, try using 18pf thru 22pf. Does your school have an oscillioscope?

Kryten · 8th May 2008, 12:12 PM

No I dont have a ocillioscope but making the connection between the PIC and Crystal seems to have made it work (Im so stupid at times)

After checking everyother connection but the crystals i couldnt see any faults but it works now so: Im happy (as Droopy says)
Eidt:
But school has and they ar currently rebuilding the electronics deparment so no luck there

**3v0** · 8th May 2008, 12:25 PM

from: http://stolz.de.be/

Pin 4 on the RS232 is connected to MCLR/RESET on the PIC. If your USB->RS232 does not handle this line correctly the PIC will never come out of reset or never be reset.

The loopback has to work but with a broken RESET it the ICD2 will not function.

Kryten · 8th May 2008, 03:35 PM

Well it works fine now. I just need a 47k (or 50k) Pot to set the pic that are beeing programmeds MCLR everything else works fine just now

**3v0** · 8th May 2008, 06:53 PM

Quote:

Originally Posted by Kryten

Well it works fine now. I just need a 47k (or 50k) Pot to set the pic that are beeing programmeds MCLR everything else works fine just now

I am glad it is working but I do not understand what you are using a pot for.

blueroomelectronics · 8th May 2008, 10:22 PM

The pots a bit of mystery for me too.

August Treubig · 8th May 2008, 10:35 PM

Blueroom Bill,

Did you get the email I sent you the other day about a JuneBug board?

Kryten · 9th May 2008, 08:18 AM

The Pot is for using a OPAmp for targets MCLR instead ot transistors (had to improvise as the school is beeing rebuildt/upgraded and I got the wrong transistors). Its a option on stoltz schematics, but i was planning on using the orginal with transistors..

7th May 2008, 03:35 PM	#31 (permalink)
Kryten Experienced Member Join Date: Oct 2007 Location: Stavern, Norway Posts: 162	so your saying that it might not work at all __________________ Simplicity rules Good enought - its perfect My virtual city Are you a Chemist?

8th May 2008, 11:13 AM	#34 (permalink)
Kryten Experienced Member Join Date: Oct 2007 Location: Stavern, Norway Posts: 162	Well its part of my final project so Im going to have to get it working. I allready hav a PICKit2 to run from my laptop (school bought it for me ). And as far as i know i can program tha 18f4550 from the PICKit2 som im actually ok there. Just need to get the ICD2 Clone working so I can write about it... __________________ Simplicity rules Good enought - its perfect My virtual city Are you a Chemist?

8th May 2008, 11:38 AM	#36 (permalink)
Kryten Experienced Member Join Date: Oct 2007 Location: Stavern, Norway Posts: 162	The loopback test without the PIC (read loop in the socket for PIC) works but im not able to connect to ICD2 (Im using bills Bootlader and have a external power on the ICD2) But at my school they sell out the old computers that they er changing to teachers only ( i have tried to get one without any luck) edit: But thinking of it it might be the crystal that are not working properly. Is there any way to check it? or it might be an ide to actually connect it !?!?!?! __________________ Simplicity rules Good enought - its perfect My virtual city Are you a Chemist? Last edited by Kryten; 8th May 2008 at 12:01 PM.

8th May 2008, 12:07 PM	#37 (permalink)
blueroomelectronics Experienced Member Join Date: Jan 2007 Location: Toronto, Canada Posts: 4,123 Blog Entries: 1	The crystals a good guess, try using 18pf thru 22pf. Does your school have an oscillioscope? __________________ Bill Smart Kits build Smart People http://www.blueroomelectronics.com

8th May 2008, 12:12 PM	#38 (permalink)
Kryten Experienced Member Join Date: Oct 2007 Location: Stavern, Norway Posts: 162	No I dont have a ocillioscope but making the connection between the PIC and Crystal seems to have made it work (Im so stupid at times) After checking everyother connection but the crystals i couldnt see any faults but it works now so: Im happy (as Droopy says) Eidt: But school has and they ar currently rebuilding the electronics deparment so no luck there __________________ Simplicity rules Good enought - its perfect My virtual city Are you a Chemist? Last edited by Kryten; 8th May 2008 at 04:02 PM.

8th May 2008, 12:25 PM	#39 (permalink)
3v0 Moderator Join Date: Jul 2006 Location: USA Posts: 2,568	from: http://stolz.de.be/ Pin 4 on the RS232 is connected to MCLR/RESET on the PIC. If your USB->RS232 does not handle this line correctly the PIC will never come out of reset or never be reset. The loopback has to work but with a broken RESET it the ICD2 will not function. __________________ To control the world from your PC with USB I suggest USB Bit Wacker 3v0's Tutorials for ABSOLUTE BEGINNER C, PIC 18F, MPLAB® and MCC18 Compiler Last edited by 3v0; 8th May 2008 at 12:49 PM.

8th May 2008, 03:35 PM	#40 (permalink)
Kryten Experienced Member Join Date: Oct 2007 Location: Stavern, Norway Posts: 162	Well it works fine now. I just need a 47k (or 50k) Pot to set the pic that are beeing programmeds MCLR everything else works fine just now __________________ Simplicity rules Good enought - its perfect My virtual city Are you a Chemist?

8th May 2008, 10:22 PM	#42 (permalink)
blueroomelectronics Experienced Member Join Date: Jan 2007 Location: Toronto, Canada Posts: 4,123 Blog Entries: 1	The pots a bit of mystery for me too. __________________ Bill Smart Kits build Smart People http://www.blueroomelectronics.com

8th May 2008, 10:35 PM	#43 (permalink)
August Treubig Experienced Member Join Date: Nov 2007 Location: Arkansas Posts: 92	Email Blueroom Bill, Did you get the email I sent you the other day about a JuneBug board? __________________ August Treubig AG5AT

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