Re: [OpenOCD-user] Error: JTAG scan chain interrogation failed: all zeroes

[Andreas F. <and...@gm...>]

Please reply at the bottom of the mail and keep the mailing list in Cc.

On Thu, Jun 27, 2019 at 1:25 PM ravi kiran <rav...@gm...> wrote:

> After executing the above command (openocd -f interface/ftdi/ngxtech.cfg
> -f interface/ftdi/olimex-arm-jtag-swd.cfg -f target/at91samdXX.cfg)
> it is not throwing the error message instead it is stopping after the
> execution.
> Please check the below output log.
> -----------------------------------------------------------------
> root@yash01-desktop:/home/yash01/Videos/code/tcl# openocd -f
> interface/ftdi/ngxtech.cfg -f interface/ftdi/olimex-arm-jtag-swd.cfg -f
> target/at91samdXX.cfg
> Open On-Chip Debugger 0.10.0+dev-00735-g56568b7-dirty (2019-06-10-18:27)
> Licensed under GNU GPL v2
> For bug reports, read
> http://openocd.org/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 : FTDI SWD mode enabled
> none separate
> adapter speed: 400 kHz
> ----------
> cortex_m reset_config sysresetreq
> Info : Listening on port 6666 for tcl connections
> Info : Listening on port 4444 for telnet connections
> Info : clock speed 400 kHz
>
> root@yash01-desktop:/home/yash01/Videos/code/tcl#
>
> ------------------------------------------------------------------------------------------
>
>
> On Thu, Jun 27, 2019 at 4:44 PM Andreas Fritiofson <
> and...@gm...> wrote:
>
>>
>>
>> On Thu, Jun 27, 2019 at 12:40 PM ravi kiran <rav...@gm...>
>> wrote:
>>
>>> im using the below adapter . -->ARM-JTAG-SWD -  Plug-in Adapter, ARM
>>> JTAG SWD Adapter for Openocd and Crosswork
>>>
>>> https://in.element14.com/olimex/arm-jtag-swd/adptr-jtag-swd-openocd-crossworks/dp/2144329#
>>>
>>> please check the above link for adapter details.
>>>
>>
>> OpenOCD supports this adapter, use it like this:
>>
>> openocd -f interface/ftdi/ngxtech.cfg
>> -f interface/ftdi/olimex-arm-jtag-swd.cfg -f target/at91samdXX.cfg
>>
>> But still, why doesn't the Atmel EDBG interface built-in on the Xplained
>> board work for you?
>>
>> /Andreas
>>
>
Ok, some progress. But before we start debugging your wiring, please
explain why you're not using the built-in debug adapter on the Xplained
board and check if it works with that option instead.

/Andreas