On May 22, 2012, at 04:11 , Xiaofan Chen wrote: > Hmm, I believe the issue has been solved by updating to the latest > Segger firmware. What is the version you are updating to?
the latest, May 3, 2012, packed within Setup_JLinkARM_V446f.zip Info : J-Link initialization started / target CPU reset initiated Info : J-Link ARM V8 compiled May 3 2012 18:36:22 Info : J-Link caps 0xb9ff7bbf Info : J-Link hw version 80000 Info : J-Link hw type J-Link Info : J-Link max mem block 9336 Info : J-Link configuration Info : USB-Address: 0x0 Info : Kickstart power on JTAG-pin 19: 0xffffffff Info : Vref = 3.274 TCK = 1 TDI = 1 TDO = 1 TMS = 1 SRST = 0 TRST = 1 Info : J-Link JTAG Interface ready Info : clock speed 1000 kHz Error: JTAG scan chain interrogation failed: all ones Error: Check JTAG interface, timings, target power, etc. Error: Trying to use configured scan chain anyway... Error: stm32.cpu: IR capture error; saw 0x0f not 0x01 Warn : Bypassing JTAG setup events due to errors Warn : Invalid ACK 0x7 in JTAG-DP transaction Polling target failed, GDB will be halted. Polling again in 100ms Polling target failed, GDB will be halted. Polling again in 300ms there is also a V446g beta, but I did not try it. anyway, I don't think we should expect Segger to update their firmware to work with OpenOCD, we should update OpenOCD to make it work with all Segger firware versions. I'd be happy if Segger would just disclose the changes in the USB protocol, so we don't have to reverse engineer it. do we have any contacts at Segger? I would first write to Segger and try to get an official statement from them. > Last time Segger did spend time to fix the issue and when I tried it, > 4.33h beta firmware solved the problem there are no 4.33[a-z] at all on the Segger site (http://www.segger.com/j-link-older-versions.html), from 4.32b they jump to 4.34. I currently have two J-Link V8 probes, one running the latest v6.46f and the other running the old 4.14g, so it is relatively simple to run comparison tests. any other comments on how to proceed? regards, Liviu ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ OpenOCD-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/openocd-devel
