Jtag Connection Prob - Page 2 - Techwatch Support Forums: Digital & Satellite TV, FTA, Cable, Computers, Mobile Phones, Apple and General Tech Forums

tariqz118 · 09-01-08, 10:41 PM

ok whenever i try connecting it says error pc to target communication error i have held down the jtag points and still no successs

timste81 · 09-01-08, 10:45 PM

is ur points in the rite place? yellow 2, white 6-20, red 5, green 7, blue 9, black 13. if there at the wrong points just break the pins off the wee board n solder them on. my j tag was wrong n thats wat i had 2 do mate..

Jimdefruit · 16-01-08, 03:49 PM

I have built a jtag and checked all connections three times over and I am getting the same Target Communication Error as tariqz.

I have the Mac_Mot running and the printer port set to EPP mode and all connections are solidly soldered. I am getting the 3volts ok on the jtag and all components that I can check are ok.

Is there any method of checking the CI to make sure that is ok?

I have tried STD, OCD and none will connect.

tariqz118 · 16-01-08, 05:13 PM

hey jimdefruit is your box on debug mode when jtag connected??

Jimdefruit · 16-01-08, 05:20 PM

Quote:

Originally Posted by tariqz118

hey jimdefruit is your box on debug mode when jtag connected??

Yes it is. Did you manage to solve your problem?

ronster · 16-01-08, 07:05 PM

Quote:

Originally Posted by Jimdefruit

I have built a jtag and checked all connections three times over and I am getting the same Target Communication Error as tariqz.

I have the Mac_Mot running and the printer port set to EPP mode and all connections are solidly soldered. I am getting the 3volts ok on the jtag and all components that I can check are ok.

Is there any method of checking the CI to make sure that is ok?

I have tried STD, OCD and none will connect.

heres how i do it m8

1.solder jtag as in my previous post and connect to pc

2.power up box and put in debug mode

3.open and run mac mot

4.open ocd and make sure setting are:
ARM
ARM940T
connection LPT1
interface device: Wiggler
Speed: 1.380
then hit OK and it should allow you to enter the bytes in the command window

Sorry cant advise on STD as never needed to use it...yet!!

Jimdefruit · 16-01-08, 11:20 PM

I have done exactly that but still get a not connected error with both OCD and SDT.

ronster · 16-01-08, 11:26 PM

must be something to do with your jtag m8
are you waiting for the standby light to turn green before you open ocd ?(forgot to mention it before)

Jimdefruit · 16-01-08, 11:33 PM

Yes it is green before starting OCD. I think it must be something to do with the jtag so I will rebuild it and try again.

09-01-08, 10:41 PM	#11 (permalink)
tariqz118 Senior Member Join Date: Dec 2007 Posts: 583 Thanks: 124 Thanked 69 Times in 58 Posts	Re: Jtag Connection Prob ok whenever i try connecting it says error pc to target communication error i have held down the jtag points and still no successs

09-01-08, 10:45 PM	#12 (permalink)
timste81 Junior Member Join Date: Aug 2007 Posts: 28 Thanks: 3 Thanked 0 Times in 0 Posts	Re: Jtag Connection Prob is ur points in the rite place? yellow 2, white 6-20, red 5, green 7, blue 9, black 13. if there at the wrong points just break the pins off the wee board n solder them on. my j tag was wrong n thats wat i had 2 do mate..

16-01-08, 03:49 PM	#13 (permalink)
Jimdefruit Super Moderator Join Date: Jan 2006 Posts: 2,858 Thanks: 20 Thanked 221 Times in 187 Posts	Re: Jtag Connection Prob I have built a jtag and checked all connections three times over and I am getting the same Target Communication Error as tariqz. I have the Mac_Mot running and the printer port set to EPP mode and all connections are solidly soldered. I am getting the 3volts ok on the jtag and all components that I can check are ok. Is there any method of checking the CI to make sure that is ok? I have tried STD, OCD and none will connect. __________________ Dreambox 800 HD; Dreambox 7000s + VBox + Channel Master 1.2 with 36v actuator CM120 feedhorn and Invacom .3 LNB Skystar 2 PCI card with links to my Dreamboxes If you like what you see here, tell your friends.

16-01-08, 05:13 PM	#14 (permalink)
tariqz118 Senior Member Join Date: Dec 2007 Posts: 583 Thanks: 124 Thanked 69 Times in 58 Posts	Re: Jtag Connection Prob hey jimdefruit is your box on debug mode when jtag connected??

16-01-08, 11:20 PM	#17 (permalink)
Jimdefruit Super Moderator Join Date: Jan 2006 Posts: 2,858 Thanks: 20 Thanked 221 Times in 187 Posts	Re: Jtag Connection Prob I have done exactly that but still get a not connected error with both OCD and SDT. __________________ Dreambox 800 HD; Dreambox 7000s + VBox + Channel Master 1.2 with 36v actuator CM120 feedhorn and Invacom .3 LNB Skystar 2 PCI card with links to my Dreamboxes If you like what you see here, tell your friends.

16-01-08, 11:26 PM	#18 (permalink)
ronster Senior Member Join Date: Jan 2007 Location: Here Posts: 2,398 Thanks: 140 Thanked 981 Times in 529 Posts	Re: Jtag Connection Prob must be something to do with your jtag m8 are you waiting for the standby light to turn green before you open ocd ?(forgot to mention it before)

16-01-08, 11:33 PM	#19 (permalink)
Jimdefruit Super Moderator Join Date: Jan 2006 Posts: 2,858 Thanks: 20 Thanked 221 Times in 187 Posts	Re: Jtag Connection Prob Yes it is green before starting OCD. I think it must be something to do with the jtag so I will rebuild it and try again. __________________ Dreambox 800 HD; Dreambox 7000s + VBox + Channel Master 1.2 with 36v actuator CM120 feedhorn and Invacom .3 LNB Skystar 2 PCI card with links to my Dreamboxes If you like what you see here, tell your friends.

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