Try a lower clock speed. That looks like signal integrity issues. Either that, or one of the wires isn't connected as solidly as it could be.
elex S <elexs...@gmail.com> wrote: Hello, I am new to JTAG and OpenOCD. I want to use Jlink-JTAG with my PHYTEC LPC3250 board. Hence, I have downloaded code from "http://developer.berlios.de/projects/openocd";. I built the code as follows: cd openocd-0.4.0 ./configure --enable-jlink make make install Then I tried 'openocd" executable as follows sudo openocd -f /usr/local/share/openocd/scripts/interface/jlink.cfg -f /usr/local/share/openocd/scripts/board/phytec_lpc3250.cfg -c 'reset_config trst_and_srst' However application fails to connect with JTAG and gets hang in between. Could you please provide me some pointers. I have captured log: Open On-Chip Debugger 0.4.0 (2010-11-23-12:13) Licensed under GNU GPL v2 For bug reports, read http://openocd.berlios.de/doc/doxygen/bugs.html jtag_nsrst_delay: 200 jtag_ntrst_delay: 1 200 kHz trst_and_srst separate srst_gates_jtag trst_push_pull srst_open_drain dcc downloads are enabled trst_and_srst separate srst_gates_jtag trst_push_pull srst_open_drain Info : J-Link initialization started / target CPU reset initiated Error: J-Link command EMU_CMD_VERSION failed (-110) Info : J-Link JTAG Interface ready Info : clock speed 200 kHz Info : JTAG tap: lpc3250.sjc tap/device found: 0x000000ff (mfg: 0x07f, part: 0x0000, ver: 0x0) Warn : JTAG tap: lpc3250.sjc UNEXPECTED: 0x000000ff (mfg: 0x07f, part: 0x0000, ver: 0x0) Error: JTAG tap: lpc3250.sjc expected 1 of 1: 0x1b900f0f (mfg: 0x787, part: 0xb900, ver: 0x1) Info : JTAG tap: lpc3250.cpu tap/device found: 0x000000ff (mfg: 0x07f, part: 0x0000, ver: 0x0) Warn : JTAG tap: lpc3250.cpu UNEXPECTED: 0x000000ff (mfg: 0x07f, part: 0x0000, ver: 0x0) Error: JTAG tap: lpc3250.cpu expected 1 of 1: 0x17900f0f (mfg: 0x787, part: 0x7900, ver: 0x1) Warn : Unexpected idcode after end of chain: 128 0xdec65cff Warn : Unexpected idcode after end of chain: 160 0x000000da Warn : Unexpected idcode after end of chain: 192 0x00000000 Warn : Unexpected idcode after end of chain: 224 0x00000000 Warn : Unexpected idcode after end of chain: 256 0x00000000 Warn : Unexpected idcode after end of chain: 288 0x00000000 Warn : Unexpected idcode after end of chain: 320 0x00000000 Warn : Unexpected idcode after end of chain: 352 0xe4000000 Warn : Unexpected idcode after end of chain: 384 0xe8d0ced2 Warn : Unexpected idcode after end of chain: 416 0x60606440 Warn : Unexpected idcode after end of chain: 448 0x60645a66 Warn : Unexpected idcode after end of chain: 480 0xfe407260 Warn : Unexpected idcode after end of chain: 512 0x1b900f0f Warn : Unexpected idcode after end of chain: 544 0x17926f0f Error: double-check your JTAG setup (interface, speed, missing TAPs, ...) Info : JTAG tap: lpc3250.sjc tap/device found: 0x000000ff (mfg: 0x07f, part: 0x0000, ver: 0x0) Warn : JTAG tap: lpc3250.sjc UNEXPECTED: 0x000000ff (mfg: 0x07f, part: 0x0000, ver: 0x0) Error: JTAG tap: lpc3250.sjc expected 1 of 1: 0x1b900f0f (mfg: 0x787, part: 0xb900, ver: 0x1) Info : JTAG tap: lpc3250.cpu tap/device found: 0x000000ff (mfg: 0x07f, part: 0x0000, ver: 0x0) Warn : JTAG tap: lpc3250.cpu UNEXPECTED: 0x000000ff (mfg: 0x07f, part: 0x0000, ver: 0x0) Error: JTAG tap: lpc3250.cpu expected 1 of 1: 0x17900f0f (mfg: 0x787, part: 0x7900, ver: 0x1) Warn : Unexpected idcode after end of chain: 480 0xfe0000ff Warn : Unexpected idcode after end of chain: 512 0x1b900f0f Warn : Unexpected idcode after end of chain: 544 0x17926f0f Error: double-check your JTAG setup (interface, speed, missing TAPs, ...) Command handler execution failed Warn : jtag initialization failed; try 'jtag init' again. ^C Please let me know, If I am missing some steps. Regards, Surendra _______________________________________________ Openocd-development mailing list Openocd-development@lists.berlios.de https://lists.berlios.de/mailman/listinfo/openocd-development
