On Tue, Sep 13, 2011 at 9:28 AM, Oliver Döring <o.doer...@tu-bs.de> wrote: > Hi, > > I'm having lots of problems with this Toradex board. > > I use a custom carrier board without JTAG buffers, so I connected my > JTAG-USB directly to the Colibri FFC JTAG connector. My JTAG adapter is > FT2232 based and uses the OOCDLink layout, which means it has NTRST and > NSRST buffers with OE. I traced all the signals from the Colibri board to > the JTAG adapters, everything looks ok. I looked at the signals with an > (analogue) oscilloscope and saw the reset signals and pulses on TMS, TCK, > TDI and TDO. > > However, here is what I get: > > OpenOCD startup: >> >> Open On-Chip Debugger 0.6.0-dev-00079-g4017af8-dirty (2011-09-11-23:08) >> Licensed under GNU GPL v2 >> For bug reports, read >> http://openocd.berlios.de/doc/doxygen/bugs.html >> Info : only one transport option; autoselect 'jtag' >> 100 kHz >> adapter_nsrst_delay: 260 >> jtag_ntrst_delay: 250 >> Info : colibri_pxa320.cpu: hardware has 2 breakpoints and 2 watchpoints >> trst_and_srst separate srst_gates_jtag trst_push_pull srst_open_drain >> adapter_nsrst_delay: 800 >> Info : clock speed 100 kHz >> Info : JTAG tap: colibri_pxa320.cpu tap/device found: 0x7e642013 (mfg: >> 0x009, part: 0xe642, ver: 0x7) > > Trying to halt the CPU: >>> >>> reset halt >> >> JTAG tap: colibri_pxa320.cpu tap/device found: 0x7e642013 (mfg: 0x009, >> part: 0xe642, ver: 0x7) >> Bad value '00' captured during DR or IR scan: >> check_value: 0x02 >> check_mask: 0x07 >> JTAG error while writing DCSR >> Bad value '00' captured during DR or IR scan: >> check_value: 0x02 >> check_mask: 0x06 >> JTAG error while reading TX >> error while polling TX register, reset CPU >> target state: halted >> target halted in ARM state due to undefined, current mode: User >> cpsr: 0x00000000 pc: 0x00000000 >> MMU: disabled, D-Cache: disabled, I-Cache: disabled >>> > > When I try to resume, I get lots of those "Bad value '00' captured..." > messages and eventually a "time out writing RX register".
FWIW I was just chasing the same problem yesterday with a different PXA320 board and an Amontect JTAGKey2P. I suspect problems with reset handling, but I'm not sure. I'm glad to help test any hypotheses. Matt _______________________________________________ Openocd-development mailing list Openocd-development@lists.berlios.de https://lists.berlios.de/mailman/listinfo/openocd-development
