Anyone? Am I the only person with a BBB and JTAG? Is there anyone in the Portland (Oregon) Metro area who has a Flyswatter2 and/or a BBB (with JTAG connector) soldered on who'd be willing to spend 30 minutes swapping components to see if the issue is my BBB, my JTAG or my OpenOCD/libusb/Linux install?
On Friday, May 16, 2014 3:23:23 PM UTC-7, Tony Jones wrote: > > I'm trying to connect a Bus Blaster > v3c<http://dangerousprototypes.com/docs/Bus_Blaster_v3_design_overview>to a > Beagle Bone Black. I'm seeing identical output to the AM335X > problem posted here: > https://forum.sparkfun.com/viewtopic.php?f=18&t=35490 > > I'm using OpenOCD 0.8. TDO is always 1, if I ground it, OpenOCD > reports "JTAG scan chain interrogation failed: all zeros". TCK is > constantly changing. > > I'm using the Tincan Tools ARM20 to cTI20 > adapter<http://www.tincantools.com/JTAG/ARM20CTI20.html>. > The Bus Blaster uses the same ARM20 pinout as the Tincan Flyswatter. > I've verified via continuity that everything is correct wiring/adapter wise > > The Tincan instructions for using the > adapter<http://www.tincantools.com/wiki/Flyswatter2_BeagleBone_Black_How_To>with > their JTAG interface are pretty straight forward, I used their config > as a starting point (FYI: I see the same output using the openocd supplied > am335x.cfg) > > $ openocd -f ./ti_beaglebone_with_fs2.cfg -c init -c "reset init" > Open On-Chip Debugger 0.8.0 (2014-05-12-14:07) > Licensed under GNU GPL v2 > For bug reports, read > http://openocd.sourceforge.net/doc/doxygen/bugs.html > Info : only one transport option; autoselect 'jtag' > adapter speed: 100 kHz > Warn : target name is deprecated use: 'cortex_a' > trst_and_srst separate srst_gates_jtag trst_push_pull srst_open_drain > connect_deassert_srst > Info : clock speed 100 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: am335x.jrc: IR capture error; saw 0x3f not 0x01 > Warn : Bypassing JTAG setup events due to errors > 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: am335x.jrc: IR capture error; saw 0x3f not 0x01 > Warn : Bypassing JTAG setup events due to errors > > > Tips/suggestions welcomed. I'm out of ideas. > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
