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Forum: ARM programming with GCC/GNU tools H-JTAG Error: Can't halt target


von Amit C. (amit_c)


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Hi All,

Recently I build a wiggler clone with reference attached 
schematic(jtagwigglersch.jpg).

I using my own lpc2148 development kit, I tried to debug my board with 
H-JTAG.

It is really surprising for me that I'm able to detect the device(please 
see Connection.jpg) but while debugging the code I using the check 
option in H-Flasher to verify the connection. It is giving me error: 
Cant halt target and make it enter debug.

If anybody have faced this kind of problem share the solution for this.



Thanks,
Amit C

von mthomas (Guest)


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IRC the TRST-line is needed too for this controller - (S)RST might not 
be enough.

von Amit C. (amit_c)


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Thank you Martin,

I Connected a nTRST signal and its working perfectly.

Thanks,
Amit C

von amir (Guest)


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Hi amit c
i had that problem like you.could you share new programer's schematic?
tnx

von Amit C (Guest)


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Hello,

I don't have tool to draw a schematic, but I'll explain the changes.

1. Connect the 6th no pin of parallel port to 9 no pin of 74xx244.
2. Connect 11 no pin of 74xx244 to the 3rd no pin of jtag header.
3. And 18 no pin of 74xx244 to ground.

Thanks
Amit

von Deniz (Guest)


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How can i solve this problem i have

von s .vrao (Guest)


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hi frinds
i have a problem with above circuit when i am using this circuit for 
lpc1768 the h-jtag server was not connecting.it was showing the massage 
unable to load h-jtag lpt driver. only usb modem is supported.please 
help me ....

von Amit C. (amit_c)


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Hello s .vrao,

Hope you have selected lpt port for programming in settings.
Please confirm if not.

Thanks
Amit C

von JordanDiece (Guest)


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