I've monitored usb using wireshark : break takes 1s, step takes 3s.
Duration between 2 USB packets is at max 0.5s.
I'm glad to hear someone debugging at lightspeed with avarice + gdb. I
hope I will manage to have such a setup.
I'm using avrdude for programming :
* avrdude -pm328p -c dragon_isp -Pusb -v -U
flash:w:arduino_avr_template_avr_plugin.hex:i*
debugWire fuse is set, so when I flash I have following logs :
* avrdude: jtagmkII_setparm(): bad response to set parameter command:
RSP_FAILED
avrdude: jtagmkII_getsync(): ISP activation failed, trying debugWire
avrdude: Target prepared for ISP, signed off.*
... then program is flashed. As I understand, ISB programming is used
with debugWire fuse enabled.
Even if I wait during some seconds avarice won't run successfully, I
have these logs :
*AVaRICE version 2.13, Sep 19 2014 09:15:10*
* JTAG config starting.**
** Found a device: AVRDRAGON**
** Serial number: 00:a2:00:04:72:83**
** set paramater command failed: DEBUGWIRE SYNC FAILED**
** Failed to activate debugWIRE debugging protocol**
** USB bulk read error: Input/output error**
** USB daemon died
*
If I power off/power on MCU then avarice launches successfully.
Now I will test avarice programming.
Le 09/12/2014 13:13, Armin Otterstätter a écrit :
breaking/stepping is instantly on my setup. At least so fast that it
just noteable to me.
Regarding the ISP issue are you using avarice or avrdude for
programming? If avrdude, are you then using dragon with ISP or debugwire?
For me programming with avarice is working just fine. But when I use
avrdude (which by itself also works just fine) I have to add some
delay before invoking avarice otherwise avarice cannot open the USB.
Because of that its (unfortunately) impossible to run avrdude as a
shell command through .gdbinit.
2014-12-09 11:34 GMT+01:00 Rémi Pincent <mr.laho...@laposte.net
<mailto:mr.laho...@laposte.net>>:
Yes I'm on an Arch distribution.
Thanks for wireshark tip. I will check USB connection.
How long is breaking/stepping with your setup?
In fact, flash ends successfully through ISP in debugWire mode.
But after, if I want to launch a debug session I must unplug MCU.
Reset line is just pulled up.
This problem is also descriped on this topic :
http://awtfy.com/2012/03/29/hardware-debugging-the-arduino-using-eclipse-and-the-avr-dragon/
"If you get an error, check that you’re using libusb. Also in most
cases just cycling the power on both the Dragon and the Arduino
puts it back to working. If you give avarice a -v flag for verbose
it will constantly spit shit out for you to read and not be
interested in as you debug. "
Lah.
Le 09/12/2014 10:27, Armin Otterstätter a écrit :
I assume you're on Linux?
I did the Tracing with Wireshark
(http://wiki.wireshark.org/CaptureSetup/USB). There you can set
the time-display to "relative to previous captured packet" (or
similar) and then you can quickly see where the USB is hanging.
Hmm the DEBUGWIRE SYNC FAILD doesn't sound too good. When I'm
downloading I don't have to unplug. Maybe there is some problem
with the DebugWire communication alltogether. Do you have
anything connected to Reset apart from the AVR Dragon?
Cheers,
Armin
PS.: sorry missed the reply-all in the first response... so now
back to the mailinglist...
2014-12-09 10:14 GMT+01:00 Rémi Pincent <mr.laho...@laposte.net
<mailto:mr.laho...@laposte.net>>:
Hi Armin,
I'm using AVaRICE version 2.13, Sep 19 2014 09:15:10.
According to sf status "AVaRICE 2.12 is the latest release."!
What is your version?
How did you trace these USB issues?
Another question, after flashing code using debugger, I have
to unplug/plug debugger and MCU otherwise when I launch
avarice I have "set paramater command failed: DEBUGWIRE SYNC
FAILED", have you some tips in order to solve this issue?
Cheers
Lah
Le 09/12/2014 10:08, Armin Otterstätter a écrit :
Which Version of avarice are you using?
I had similar problems when using the avarice that came with
an apt-get install on a recent ubuntu (Version 2.11). I
traced it down to some USB timeout issue. But the problem is
resolved in trunk. Just get the most recent version from
sf.net <http://sf.net>.
If you're on the trunk already then it'll probably be
something different...
Cheers,
Armin
2014-12-09 9:54 GMT+01:00 Rémi Pincent
<mr.laho...@laposte.net <mailto:mr.laho...@laposte.net>>:
Hi all,
I'm debugging ATmega328p with avarice + avr-gdb +
avrdragon using debugWire.
My binary is compiled with following options : -g2
-gstabs -O0
-ffunction-sections -fdata-sections -std=gnu99
All is right... But debugging is very slow, stepping is
awfully slow
(~5s), and breaking is also quite slow (~2s).
Moreover if have often to reflash code, it seems flash
get corrupted
when debug sessions does not finish cleanly.
I've written topic about this issue here
http://www.avrfreaks.net/forum/avrdragon-debugwire-atmega328p-nice-unusable
But for now, I haven't found any people working with a
usable debugging
environment with debugWire and avr-gdb... Suggestions
are about changing
toolchain and debugging tools in order to use some
proprietary solutions...
Have you got some suggestions in order to debug efficiently?
Regards.
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