Re: [OpenOCD-devel] Atmel ATSAME70 examination incomplete at startup

2018-02-24 Thread jaymaynard
The Olimex ARM-JTAG-SWD has a 27 ohm resistor in series with the SRST line. I’m using about a 3-inch ribbon cable between it and the board; the SWD adapter is plugged directly into the JTAG-TINY, as they recommend. Jay Maynard, K5ZC http://plus.google.com/+JayMaynard 2018-02-24 12:48:23 +

Re: [OpenOCD-devel] Atmel ATSAME70 examination incomplete at startup

2018-02-24 Thread Michael Schwingen
On Sat, 24 Feb 2018 00:52:44 +0100 Tomas Vanek via OpenOCD-devel wrote: > On 24.02.2018 0:04, Jay Maynard wrote: > More important is a small series resistor (33 ohm) on SWD - ringing > prevention. Again not necessary if the cable to adapter is short.

Re: [OpenOCD-devel] Atmel ATSAME70 examination incomplete at startup

2018-02-23 Thread Tomas Vanek via OpenOCD-devel
[mailto:tom_...@users.sourceforge.net] *Sent:* Friday, February 23, 2018 4:38 PM *To:* Jay Maynard <jmayn...@kahlerautomation.com> *Cc:* openocd-devel@lists.sourceforge.net *Subject:* Re: [OpenOCD-devel] Atmel ATSAME70 examination incomplete at startup I connected my custom SAME70 board to a

Re: [OpenOCD-devel] Atmel ATSAME70 examination incomplete at startup

2018-02-23 Thread Jay Maynard
, 4.7K? From: Tomas Vanek [mailto:tom_...@users.sourceforge.net] Sent: Friday, February 23, 2018 4:38 PM To: Jay Maynard <jmayn...@kahlerautomation.com> Cc: openocd-devel@lists.sourceforge.net Subject: Re: [OpenOCD-devel] Atmel ATSAME70 examination incomplete at startup I connected my

Re: [OpenOCD-devel] Atmel ATSAME70 examination incomplete at startup

2018-02-23 Thread Tomas Vanek via OpenOCD-devel
I connected my custom SAME70 board to a FT2232 based adapter just to make sure that current git master works. It does. See attached log in -d4 level as you used. There must be some electrical problem in SWD signals, grounding or supply. Tom On 23.02.2018 23:06, Jay Maynard wrote: Apologies

Re: [OpenOCD-devel] Atmel ATSAME70 examination incomplete at startup

2018-02-23 Thread Jay Maynard
Apologies for the triple post. Can I drop an anvil on Sourceforge now? Anyway, a couple of updates since that was written: 1. I tried setting the bits in the write command to 0. Didn't change the result. 2. A scope on the SWD data line shows nice clean square waves for the signal, so