Hello,
Thanks for your feedback!
Le Thu, 03 Nov 2011 09:27:49 +0100,
freddie_chopin <freddie_cho...@op.pl> a écrit :
> 1. Try changing the speed of JTAG to be 1/8th of core speed.
I have tried with adapter_khz 5 or jtag_rclk 2, and not better. Since
the JTAG is capable of finding the tap/device, doesn't that mean that
the communication is working, and thus that the jtag speed is correct?
> 2. Try doing "reset halt" from the telnet first.
It does reboot the board, but still can't halt the target. Output of
the telnet connection:
$ telnet localhost 4444
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
Open On-Chip Debugger
> reset halt
JTAG tap: at91sam9263.cpu tap/device found: 0x0792603f (mfg: 0x01f, part:
0x7926, ver: 0x0)
timed out while waiting for target halted
TARGET: at91sam9263.cpu - Not halted
in procedure 'reset'
>
Output of OpenOCD:
$ ../src/openocd -f ./interface/calao-usb-a9263.cfg
Open On-Chip Debugger 0.5.0 (2011-10-31-11:55)
Licensed under GNU GPL v2
For bug reports, read
http://openocd.berlios.de/doc/doxygen/bugs.html
Info : only one transport option; autoselect 'jtag'
adapter_nsrst_delay: 200
jtag_ntrst_delay: 200
trst_and_srst separate srst_gates_jtag trst_push_pull srst_open_drain
adapter_nsrst_delay: 300
jtag_ntrst_delay: 200
RCLK - adaptive
RCLK - adaptive
Info : RCLK (adaptive clock speed) not supported - fallback to 2 kHz
Info : JTAG tap: at91sam9263.cpu tap/device found: 0x0792603f (mfg: 0x01f,
part: 0x7926, ver: 0x0)
Info : Embedded ICE version 15
Error: unknown EmbeddedICE version (comms ctrl: 0xfffffffe)
Info : at91sam9263.cpu: hardware has 2 breakpoint/watchpoint units
Info : accepting 'telnet' connection from 4444
Info : JTAG tap: at91sam9263.cpu tap/device found: 0x0792603f (mfg: 0x01f,
part: 0x7926, ver: 0x0)
Error: timed out while waiting for target halted
TARGET: at91sam9263.cpu - Not halted
in procedure 'reset'
^C
> 3. Make sure your board has the same reset configuration as you pass
> to OpenOCD - separate lines of TRST and SRST.
From my reading of the schematics, it seems it does, but I'm not an expert. The
schematics of
the USB A9263 are available at
http://www.calao-systems.com/repository/pub/EMBEDDED%20COMPUTERS/USB-A9263-XXX/C02/HARDWARE/SCH-00007-B01.pdf
(FTDI 2232 routing is on page one).
Any other suggestion?
Thomas
--
Thomas Petazzoni, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com
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