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Discussion Groups | LPC2000 | wiggler problem...
Discussion group dedicated to the Philips LPC2000 family of ARM MCUs
wiggler problem... - donatello_2k - Dec 7 2:30:54 2006
Hi,
i built my own SAM7S256 board as well as wiggler. The wiggler is a
standard one available on net, with 100 ohm res in series between port
and HC244 as well as HC244 and SAM. However i am missings caps on the
wiggler. The cable length is abt 1 feet and the JTAG tracks on board
are not longer than 2". The board also has pullups on all lines. The
problem is I can connect but i get device id 3F0F0F0F. Obviously, the
debugging also does not work. I tried even at 8 speed but PVR command
shows the same thing. Even crossworks, H-JTag have the same problem.
Plz help.
Abhijit.
______________________________
Stellaris® MCU Family: New Parts, New Package, New Price.
(You need to be a member of lpc2000 -- send a blank email to lpc2000-subscribe@yahoogroups.com )
i built my own SAM7S256 board as well as wiggler. The wiggler is a
standard one available on net, with 100 ohm res in series between port
and HC244 as well as HC244 and SAM. However i am missings caps on the
wiggler. The cable length is abt 1 feet and the JTAG tracks on board
are not longer than 2". The board also has pullups on all lines. The
problem is I can connect but i get device id 3F0F0F0F. Obviously, the
debugging also does not work. I tried even at 8 speed but PVR command
shows the same thing. Even crossworks, H-JTag have the same problem.
Plz help.
Abhijit.
______________________________
Stellaris® MCU Family: New Parts, New Package, New Price.
(You need to be a member of lpc2000 -- send a blank email to lpc2000-subscribe@yahoogroups.com )
Re: wiggler problem... - agreat22 - Dec 7 3:33:56 2006
> i built my own SAM7S256 board as well as wiggler. The wiggler is a
Check SCH example at olimex.com/dev
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Check SCH example at olimex.com/dev
(You need to be a member of lpc2000 -- send a blank email to lpc2000-subscribe@yahoogroups.com )
Re: wiggler problem... - Leon Heller - Dec 7 4:42:01 2006
----- Original Message -----
From: "donatello_2k"
To:
Sent: Thursday, December 07, 2006 7:26 AM
Subject: [lpc2000] wiggler problem...
> Hi,
> i built my own SAM7S256 board as well as wiggler. The wiggler is a
> standard one available on net, with 100 ohm res in series between port
> and HC244 as well as HC244 and SAM. However i am missings caps on the
> wiggler. The cable length is abt 1 feet and the JTAG tracks on board
> are not longer than 2". The board also has pullups on all lines. The
> problem is I can connect but i get device id 3F0F0F0F. Obviously, the
> debugging also does not work. I tried even at 8 speed but PVR command
> shows the same thing. Even crossworks, H-JTag have the same problem.
> Plz help.
12" seems rather long for the cable, try 6". My interface in the Files
section works at full speed. Although I haven't tried it with a SAM it works
with the earlier Atmel ARM chip.
Leon
(You need to be a member of lpc2000 -- send a blank email to lpc2000-subscribe@yahoogroups.com )
From: "donatello_2k"
To:
Sent: Thursday, December 07, 2006 7:26 AM
Subject: [lpc2000] wiggler problem...
> Hi,
> i built my own SAM7S256 board as well as wiggler. The wiggler is a
> standard one available on net, with 100 ohm res in series between port
> and HC244 as well as HC244 and SAM. However i am missings caps on the
> wiggler. The cable length is abt 1 feet and the JTAG tracks on board
> are not longer than 2". The board also has pullups on all lines. The
> problem is I can connect but i get device id 3F0F0F0F. Obviously, the
> debugging also does not work. I tried even at 8 speed but PVR command
> shows the same thing. Even crossworks, H-JTag have the same problem.
> Plz help.
12" seems rather long for the cable, try 6". My interface in the Files
section works at full speed. Although I haven't tried it with a SAM it works
with the earlier Atmel ARM chip.
Leon
(You need to be a member of lpc2000 -- send a blank email to lpc2000-subscribe@yahoogroups.com )
Re: wiggler problem... - donatello_2k - Dec 7 7:37:44 2006
You can repeat the same with 6" cable too...
--- In l...@yahoogroups.com, "Leon Heller" wrote:
>
> ----- Original Message -----
> From: "donatello_2k"
> To:
> Sent: Thursday, December 07, 2006 7:26 AM
> Subject: [lpc2000] wiggler problem...
> > Hi,
> > i built my own SAM7S256 board as well as wiggler. The wiggler is a
> > standard one available on net, with 100 ohm res in series between port
> > and HC244 as well as HC244 and SAM. However i am missings caps on the
> > wiggler. The cable length is abt 1 feet and the JTAG tracks on board
> > are not longer than 2". The board also has pullups on all lines. The
> > problem is I can connect but i get device id 3F0F0F0F. Obviously, the
> > debugging also does not work. I tried even at 8 speed but PVR command
> > shows the same thing. Even crossworks, H-JTag have the same problem.
> > Plz help.
>
> 12" seems rather long for the cable, try 6". My interface in the Files
> section works at full speed. Although I haven't tried it with a SAM
it works
> with the earlier Atmel ARM chip.
>
> Leon
>
______________________________
Stellaris® MCU Family: New Parts, New Package, New Price.
(You need to be a member of lpc2000 -- send a blank email to lpc2000-subscribe@yahoogroups.com )
--- In l...@yahoogroups.com, "Leon Heller"
>
> ----- Original Message -----
> From: "donatello_2k"
> To:
> Sent: Thursday, December 07, 2006 7:26 AM
> Subject: [lpc2000] wiggler problem...
> > Hi,
> > i built my own SAM7S256 board as well as wiggler. The wiggler is a
> > standard one available on net, with 100 ohm res in series between port
> > and HC244 as well as HC244 and SAM. However i am missings caps on the
> > wiggler. The cable length is abt 1 feet and the JTAG tracks on board
> > are not longer than 2". The board also has pullups on all lines. The
> > problem is I can connect but i get device id 3F0F0F0F. Obviously, the
> > debugging also does not work. I tried even at 8 speed but PVR command
> > shows the same thing. Even crossworks, H-JTag have the same problem.
> > Plz help.
>
> 12" seems rather long for the cable, try 6". My interface in the Files
> section works at full speed. Although I haven't tried it with a SAM
it works
> with the earlier Atmel ARM chip.
>
> Leon
>
______________________________
Stellaris® MCU Family: New Parts, New Package, New Price.
(You need to be a member of lpc2000 -- send a blank email to lpc2000-subscribe@yahoogroups.com )