On Fri, Jul 8, 2011 at 9:21 PM, Eric Wetzel <[email protected]> wrote:
>
> I downloaded the oldest version available (v4.00) from the page
> Xiaofan provided, and downgraded the firmware. I had to reinstall my
> libusb filter for the J-Link, but I'm not getting the same USB read
> problems. Actually, it looks like it's working.
>
> $ openocd.exe
> Open On-Chip Debugger 0.5.0-dev (2011-07-07-08:00)
> Licensed under GNU GPL v2
> For bug reports, read
>        http://openocd.berlios.de/doc/doxygen/bugs.html
> Warn : Adapter driver 'jlink' did not declare which transports it
> allows; assuming legacy JTAG-only
> Info : only one transport option; autoselect 'jtag'
> RCLK - adaptive
> fast memory access is enabled
> dcc downloads are enabled
> force hard breakpoints
> use of EmbeddedICE dbgrq instead of breakpoint for target halt enabled
> Info : J-Link initialization started / target CPU reset initiated
> Info : J-Link ARM V8 compiled DEC 16 2008 20:15:16
> Info : J-Link caps 0x39ff7bbf
> Info : J-Link hw version 80000
> Info : J-Link hw type J-Link
> Info : J-Link max mem block 9224
> Info : J-Link configuration
> Info : USB-Address: 0x0
> Info : Kickstart power on JTAG-pin 19: 0x0
> Info : Vref = 3.313 TCK = 1 TDI = 0 TDO = 1 TMS = 0 SRST = 0 TRST = 0
> Info : J-Link JTAG Interface ready
> Info : RCLK (adaptive clock speed)
> Info : JTAG tap: omapl138.jrc tap/device found: 0x0b7d102f (mfg:
> 0x017, part: 0xb7d1, ver: 0x0)
> Info : JTAG tap: omapl138.etb enabled
> Info : JTAG tap: omapl138.arm enabled
> Info : Embedded ICE version 6
> Info : omapl138.arm: hardware has 2 breakpoint/watchpoint units
> Info : ETM v1.3

Yes I can reproduce the issue with Luminary EK-LM3S1968 board, with the
latest firmware it failed just like your previous post. Then if I downgrade the
firmware to 4.08i and OpenOCD will work.

For those who want to downgrade the firmware, here is the doc.
http://www.segger.com/cms/admin/uploads/productDocs/UM08001_JLinkARM.pdf
(Section 9.5)

This is a known problem.
http://www.segger2.com/index.php?page=Thread&threadID=869
http://comments.gmane.org/gmane.comp.debugging.openocd.devel/16831
http://www.segger2.com/index.php?page=Thread&threadID=707
(4.10i works, 4.22 failed)

-- 
Xiaofan
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