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 Post subject: JTAG howto?
PostPosted: Mon Dec 22, 2008 1:34 pm 
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Joined: Wed Jul 16, 2008 10:31 pm
Posts: 1
Hello,

Im trieing to access my Olimex Board (SAM9-L9260) directly via JTAG (ARM_USB_OCD) without ISP. When i try to connect, i use Crosswork for Arm 1.7, it says "Cannot identify target". Im not sure wheather i got all the config right. Does JTAGSEL has to be low or high? Are there some other Pins to be configured? Access via DTXD, DRXD works fine.

THX
Romil


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 Post subject: Re: JTAG howto?
PostPosted: Thu Jan 08, 2009 10:34 pm 
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Joined: Thu Jan 08, 2009 10:27 pm
Posts: 2
Section 12.5.2 indicates that JTAGSEL should be low for embedded ICE mode and high for JTAG mode. However, when I pull it high on the eval board, my tool set (IAR Embedded Workbench with J-Link) complains that it can't read RTCK.

If I don't make any changes to the eval board, I can load code into SRAM and SDRAM, but Embedded Workbench freezes up when I try to program Flash, even when using one of the example projects.

Hopefully that helps.


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