Hi Bill, I recently tried OpenOCD and encountered the same problem. The cause seemed a relatively recent checkin that was attempting to add swj support. I've been bad though and haven't made a patch or filed a bug report. My quick fix was to comment out the two lines in stellaris.cfg that were mentioning swj (an import and some sort of swj add operation)
-------- Date: Fri, 29 Oct 2010 10:21:07 +0100 From: billium <bill...@bucknall.me.uk> To: openocd-development@lists.berlios.de Subject: [Openocd-development] stellaris.cfg I had a problem with lm3s6965: ... srst_only separate srst_gates_jtag srst_open_drain Info : clock speed 500 kHz Info : JTAG tap: lm3s6965.cpu tap/device found: 0x3ba00477 (mfg: 0x23b, part: 0xba00, ver: 0x3) Info : JTAG tap: lm3s6965.cpu tap/device found: 0x000000ff (mfg: 0x07f, part: 0x0000, ver: 0x0) Warn : JTAG tap: lm3s6965.cpu UNEXPECTED: 0x000000ff (mfg: 0x07f, part: 0x0000, ver: 0x0) Error: JTAG tap: lm3s6965.cpu expected 1 of 1: 0x0ba00477 (mfg: 0x23b, part: 0xba00, ver: 0x0) Error: Trying to use configured scan chain anyway... Error: lm3s6965.cpu: IR capture error; saw 0x0f not 0x01 Warn : Bypassing JTAG setup events due to errors Warn : Invalid ACK 0x6 in JTAG-DP transaction Polling target failed, GDB will be halted. Polling again in 100ms
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