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Re: [Simulavr-devel] Run a devices twice
From: |
zug |
Subject: |
Re: [Simulavr-devel] Run a devices twice |
Date: |
Mon, 12 Jun 2017 14:43:17 +0200 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.1.1 |
Hi Thomas,
thanks for your advice! I already tested this solution but got the same result:
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
import ex_utils
import time
mcu = "atmega2560"
freq = 8000000
# Test 1
print "First Run"
sim = ex_utils.SimulavrAdapter()
sim.dmanSingleDeviceApplication()
dev = sim.loadDevice(mcu, "blinking_LED_1.elf")
sim.doRun(10000)
del dev
del sim
# Test 2
print "Second Run"
sim = ex_utils.SimulavrAdapter()
print "Program crashes here"
sim.dmanSingleDeviceApplication()
print "... and not here"
dev = sim.loadDevice(mcu, "blinking_LED_2.elf")
sim.doRun(10000)
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
▶ python evaluationFailure.py
First Run
0
Second Run
Program crashes here
FATAL: file traceval.cpp: line 615: method SetSingleDeviceApp must be called
before devices are added to DumpManager
&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&
Obviously, it is not enough to delete the two variables? I already included a
general delete for all variables ... but no sucess ;-(
Any ideas?
Sebastian
On 06/11/2017 05:22 PM, Thomas K wrote:
Hi Sebastian,
your code has some misunderstandings, I believe.
At first: ResetClock() does just reset the time control system, this isn't a
real core reset! If you want to rerun a program a second time then it's better
to reset the device and load the possibly different code again and start again.
In your code (if this is, what you want to do) it would be better to delete the
entire simulation and set it up again. Background for the exception in your code
is, that if you create a device, it registers itself on a trace system (for
debugging output, vcd-Output and such) and on 4th code line you've declared the
simulation as single device application - just one core in simulation. And on
the 12th line you create again a core without deleting the old core before! This
ends in a exception.
So, (best solution!) delete sim (means "del sim"! The garbage collector could do
this to late) for the second run and repeat 3th and 4th line (create sim and set
into single core mode) before loadDevice()
or:
Delete dev (e.g. "del dev") for the second run before loadDevice() call.
But ... maybe it's the best to describe, what you want to get. Your example is a
little bit to minimalistic. :-)
Best regards, Thomas
Am 09.06.2017 um 10:12 schrieb zug:
Hi everyone,
thanks for providing simulavr with a Python interface, I would like to use the
simulator to evaluate automatically AVR code of my students. Hence, I have a
number of elf files and it was my intention to run a script loading one by one
and execute some tests. But I failed to reset the simulator and the virtual
controller ...
To condense my problem I prepared the following code snippet that should run and
rerun an elf file. For reseting the simulation I added a method
def ResetSystem(self):
self.__sc.ResetClock()
in ex_utils.py. When I excute the script
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
import ex_utils
mcu = "atmega32"
sim = ex_utils.SimulavrAdapter()
sim.dmanSingleDeviceApplication()
# Test 1
print "First Run"
dev = sim.loadDevice(mcu, "blinking_LED.elf")
sim.doRun(10000) # Execute an exemplary simulation
sim.ResetSystem() # Reset the simulation system
# Test 2
print "Second Run"
dev = sim.loadDevice(mcu, "blinking_LED.elf")
sim.doRun(10000) # Execute an examplary simulation
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
I got
▶ python evaluationFailure.py
First Run
Second Run
FATAL: file traceval.cpp: line 567: Can't create device name twice, because
it's a single device application
What's happened? The syncMembers vector should be empty? Why do we have a
conflict here?
Thanks for your help
Sebastian
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--
-------------------------------------------------------------
Junior-Prof. Dr.-Ing. Sebastian Zug
Dept. Embedded Smart Systems (ESS)
Institute for Intelligent Cooperating Systems (IKS)
Otto-von-Guericke-University of Magdeburg
Universitätsplatz 2
39106 Magdeburg
Germany
mail: address@hidden
Tel.: +49 - 391 - 67 - 52632
Fax: +49 - 391 - 67 - 11161