Le 10.06.2013 08:23, Stuart Longland (VK4MSL) a écrit : > On 10/06/13 14:59, Stuart Longland (VK4MSL) wrote: >>> Measure the SRST voltage and make sure it's >>>> at Vdd level. [...] If you find a problem with the dongle, you may simply >>>> disconnect the reset line since in many cases you can manage without it >>>> (and the default is to not use it anyway). >> I just had a crack at this again... my multimeter measures 3.3V on that >> pin with the dongle disconnected, 0.7V with it connected. [...] >> >> I'll see what I can do about the ribbon. If need be, I'll cut the >> offending wire in the ribbon cable and wire in a toggle switch (so I can >> re-connect SRST if needed). > Okay, I located pin 15 on the ribbon, scored either side with a scalpel, > then cut it neatly with a pair of side cutters. With Amontec JTAGkey-2 or JTAGkey-2P you should not need to use any scalpel since they have on board true tristate buffers. Also Amontec implements a two stage buffers on both TRST SRST to make sure there are no glitch at powerup nor no glitch when the jtagkey is hot connected to the target board.
Having a true tristate dual buffer on TRST is a great advantage since the TRST could have target pull-down or target pull-up resistor depending if you have a board based TI or Atmel or ... For SRST I never see a target pull-down, but only pull-up resistor. Regards, Laurent http://www.amontec.com > I also managed to get my openocd built with the 'ftdi' driver... the > other driver I was thinking of was 'ftd2xx' which is the proprietary. > Under Gentoo with the live git ebuild, I had to add in a line to the > ./configure: > >> econf \ >> $(use_enable dummy) \ >> $(use_enable ftdi ft2232_libftdi) \ > Add this here: $(use_enable ftdi ftdi) \ > >> $(use_enable ftd2xx ft2232_ftd2xx) \ >> [...] > That gave me both the ft2232 and the new ftdi drivers. I now get this: >> $ openocd -f interface/ftdi/olimex-arm-usb-tiny-h.cfg -f target/stm32f1x.cfg >> Open On-Chip Debugger 0.8.0-dev-00024-g08d4411-dirty (2013-06-10-16:06) >> Licensed under GNU GPL v2 >> For bug reports, read >> http://openocd.sourceforge.net/doc/doxygen/bugs.html >> WARNING! >> This file was not tested with real interface, but is assumed to work as this >> interface uses the same layout as configs that were verified. Please report >> your >> experience with this file to openocd-devel mailing list, so it could be >> marked >> as working or fixed. >> Info : only one transport option; autoselect 'jtag' >> adapter speed: 1000 kHz >> adapter_nsrst_delay: 100 >> jtag_ntrst_delay: 100 >> cortex_m3 reset_config sysresetreq >> Info : clock speed 1000 kHz >> Info : JTAG tap: stm32f1x.cpu tap/device found: 0x3ba00477 (mfg: 0x23b, >> part: 0xba00, ver: 0x3) >> Info : JTAG tap: stm32f1x.bs tap/device found: 0x06414041 (mfg: 0x020, part: >> 0x6414, ver: 0x0) >> Info : stm32f1x.cpu: hardware has 6 breakpoints, 4 watchpoints >> Info : accepting 'telnet' connection from 4444 >> Info : JTAG tap: stm32f1x.cpu tap/device found: 0x3ba00477 (mfg: 0x23b, >> part: 0xba00, ver: 0x3) >> Info : JTAG tap: stm32f1x.bs tap/device found: 0x06414041 (mfg: 0x020, part: >> 0x6414, ver: 0x0) >> target state: halted >> target halted due to debug-request, current mode: Thread >> xPSR: 0x01000000 pc: 0x00010100 msp: 0x464c457c >> Info : device id = 0x10016414 >> Info : flash size = 512kbytes >> stm32x mass erase complete >> wrote 60184 bytes from file sd-adc-ant-debug.elf in 1.899734s (30.938 KiB/s) >> Info : JTAG tap: stm32f1x.cpu tap/device found: 0x3ba00477 (mfg: 0x23b, >> part: 0xba00, ver: 0x3) >> Info : JTAG tap: stm32f1x.bs tap/device found: 0x06414041 (mfg: 0x020, part: >> 0x6414, ver: 0x0) > and my STM32 is happily running the new code now. Thank-you all for > your assistance, and for this tool. :-) > > Regards, ------------------------------------------------------------------------------ How ServiceNow helps IT people transform IT departments: 1. A cloud service to automate IT design, transition and operations 2. Dashboards that offer high-level views of enterprise services 3. A single system of record for all IT processes http://p.sf.net/sfu/servicenow-d2d-j _______________________________________________ OpenOCD-devel mailing list OpenOCD-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/openocd-devel
