Timed tasks

Dear all, now in the right place
Because I started this thread in a solved thread, I will copy the messages to here
I am trying to do a similar thing.
I need to do 4 tasks in a loop of 1000ms.
I need to input cycles between each task and cycles duration each task.
For example for task 1 i need a duration of 100 cycles (gives a true value) each 1000 cycles. and the same for the other 3 tasks.
I let the first code but seems complicated.....if You can help me with simplest way...I am really thank you.
It is not clear exactly what you want to do. Please give a better description of your tasks and timing requirements. When you refer to cycles, do you mean iterations of the while loop?
Lynn
The task will be something that works until it is true and it will be true for a certain number of cycles (iterations loop) then waits a certain number of cycles (this will be a false value) and turns true again.
This tasks will be in time with cycles of loop iterations.
Best
CPalha
Best
CPalha
Attachments:
Timed_tasks.vi ‏23 KB

Hello cpalha,
If you want to run a task for a certain amount loop cycle and make her sleep for another one, you can use a condition loop in the while loop.
I made you a VI which explain it.
Best regards.
Sabri JATLAOUI - Certified LabVIEW Developer
Attachments:
Time task.vi ‏21 KB

Similar Messages

ARD Timed Tasks Issue

After upgrading my ARD Admin software from 3.1 to 3.2, I noticed that none of the timed tasks I had scheduled to run were running at all. Upon checking each task, I noticed that the checkboxes next to "schedule for" in ALL of the tasks was unchecked. I rechecked them and reset the time for the tasks to run and quit ARD. Upon restarting ARD, I noticed that, once again, the checkboxes next to "schedule for" in all of the tasks was unchecked.
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startDate string Oct 21, 2007 1:22:00 PM
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I Tried removeing all ARD components (per kbase article 108021) and reinstalling ARD Admin 3.0 from scratch. No problems after installing 3.0, but the problem reappeared after installing 3.2 update.
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We're having the exact same problem with remote desktop in our labs. We have several mac labs that are scheduled to restart every evening, however after upgrading ARD to 3.2 it always forgets the scheduled time.
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Method to execute timed tasks

Hi,
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maybe this can help?
Spoiler (Highlight to read)
Attachments:
execute time.vi ‏43 KB

Would like to have Automator carry out a timed task

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A simple Applescript can carry out a function after a delay:
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How many tasks can I have in NI-DAQmx system?

I am working out of the office this week - please send your response to [email protected] as well as my normal email [email protected].
I am designing a new test platform that will run on C# (because we like object oriented text based programming and because the IDE is free). For hardware we'll use your PXI modules (because your hardware is ultra-reliable). I'm starting with the following PXI modules 6259, 4072, 6509, 2575, and 2569, but we made add other modules later as future requirements demand. I am doing the system software architecture now. I've done some dabbling with Ni_daqmx, and I loathe "tasks" and "channels", but am determined to make them work.
The difficulty I'm having revolves around the overhead with setting up tasks and channels and with the concept of tasks and channels. Help hasn't helped much. Tasks seem to work great if you intend to always collect the same large amount of data from many sources and always will do it in exactly the same way.
We want something much more akin to random access memory. We'll have UUTs of different kinds coming on and off at random times. Sometimes a test will need a simple DC voltage, and other times another test will need 2 seconds worth of data at 1MS/s. It can cost around 150msec to make that change (stop the current task, creat another one, configure anohter channel, start up a new task, blah, blah, task this, channle that - for the life of me I can't understand what this damn taks concept does for me but make matters more complicated and bog down my system).
I can just barely glean from the help that I can have only one analog input task at once, but I can have sevferal taks of several different kinds running at the same time ( a digital output task and another task for digital input, and another task for analong input, etc.) . It does seem that I can set realys without having to put them into a channel and a task (Thank goodness for that - I just wanna turn on a relay I have no idea what a relay "channel" might be.)
In the PXI system I described above I'll have two devices that are analog input devices, the DMM and the Daq. Even with two devices, can I only have one analog input task running? Does that mean I've got to waste 150msec just to switch from the DMM to the Daq? (Do you understand my frustration with "tasks"? - I should be able to say "read DMM" and turn around and say "read Daq channel 0" without having to jump thru task and channle hoops and waste a bunch of time doing it).
I'll also have Daq digital IO and two 6509 digital io modules. Do I have to cram all of that into some "task" concept too? The Daq card has got many other kinds of wonderful capability (frequency measurement, counters, analog output). How many tasks can I have for that stuff? On the DMM card I can measure capacitance amoung other things. Will I have a capacitance task? The idea of a "capacitance task" hurts my head.
Golly I hate tasks. Please help.
I am working out of the office this week - please send your response to [email protected] as well as my normal email [email protected].
Dave

Dave,
Thanks for posting to the NI Forums.
For the good of the community we like to keep conversations that start of the forums on the forums rather than moving to email. If you want to move to email support I recommend contacting NI through the email route.
I will answer your questions here. If you need more direct contact please feel free to contact us through [email protected].
For some the concept of tasks may seem daunting, however, for many applications it makes life a lot more simple. A task at a very fundamental level is simply a collection of channels with a single type (AI, DI, DO, etc.) and a single timing configuration (sampling rate, continuous vs. finite, etc.). It is a way to organize configuration data.
The concept of a task is an abstraction like OO programming. Like OO programming it may take some time to understand but can be a time saver in the end. Also like OO programming it does add some initial programming overhead. It is much more simple to simply type a printf statement in C than to have to create a bunch of classes just to output text to the screen. You can accomplish the same thing not using OO programming, but in the end OO programming is extremely useful, because it groups useful information and methods together in one place.
With very simple applications OO programming sometimes does not make sense. But as a program gets more and more complex OO programming becomes more and more useful. It takes some learning but it is worth it.
I believe the concept of a task does the same thing. It does not change the actual functionality of the device or add excessive overhead. It is just an abstraction that pulls configuration data about a specific "task" and methods the task can perform into a single logical place.
Unlike the entirely abstract concept of an Object, a Task is run on a physical device and therefore has physical limitations. You can create multiple tasks of the same type, but you can only run a one timed task of each type on a single board at a time. In other words you can have multiple AI tasks running at the same time but they need to run on different boards or only one can be timed (have a rate). You can also have multiple timed AI tasks configured for a single board but only one can actually be running at a time.
The reason you can only have a single timed task running at a time is because the M-Series boards (and many other boards as well) have a single timing engine for each type of acquisition or generation. There is a single timing engine for AI, one for AO, and so forth. You cannot have channel 1 running at 1 MS/s and another running at 50 kS/s.
However, tasks can exist even when they are not being actively run. You can create all the tasks you need at the beginning of your program and simply start and stop them as you need. After the task is stopped you do not need to clear the task until the end of your program. You can further increase performance by moving the Task into the latest state possible without actually starting the task. This can be done by calling myTask.Control(TaskAction.Action). The Task states are further explained in the NI-DAQmx Help Manual.
The concept of a task will need to be used with any device that is being programmed using NI-DAQmx. The 6259 and 6509 will need to be programmed using DAQmx. With the 2575 and 2569 you have the choice of either using the NI-DAQmx API or the NI-SWITCH API. The SWITCH API does not use the concept of tasks. For the 4072 you will need to use the NI-DMM API. This API also does not use the concept of tasks.
Hopefully this information is helpful. Let me know if you have any additional questions or concerns.
Regards,
Neil S.
Applications Engineer
National Instruments

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THANKS!
XServe G5/2GHz/1Gb/80Gb Mac OS X (10.4.7) PB 17" (PPC),PB Ti, XServe G4

Thank you for both replies!
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http://dansguardian.org/downloads/samland/MultDGinstall.rtf
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Can I expect this level of precision to work accurately? Are the numbers I get from System.currentTimeInMillis() likely to correspond, to the millisecond, to the actual time the byte arrives at the UART?
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You certainly don't need RTJ and you don't need to
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http://java.sun.com/products/javacomm/javadocs/javax/c
omm/CommPort.html#enableReceiveTimeout(int). This
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The timeout I am monitoring is between the first and last bytes of a message, not for any data recieved.

Statechart - exiting from timed actions

Hi,
I'm new at Labview and the statechart module. I used to work with Simulink so I'm in adaptation mode!
I'm building a statechart to control a machine that has several devices. I want implement a emergency state.
Some of the states actions have subVI inside with timed tasks inside. I want be able to go to the emergency state even if one of that timed tasks are running and it is not yet finished.
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You can see an example of my application in the attach.
I'm trying to create a superstate inside each main state for each device that i need to control. So connect the emergency transition directly to each transition is not solution.
Attachments:
labview_plc_3.7z ‏241 KB

hi
data : gv_bukrs like bsis-bukrs.
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CALL FUNCTION 'DYNP_VALUES_READ'
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He told me my problems might come from a corrupted backup file.
To try to get rid of this I shall restore my iPhone and register it as a New One.
In the process I will lost all my SMS (1500+) and he say Apple provide no methods to restore them after this process.
Well this is quite a hard remedy as I backup on my iMac(+TM) and on iCloud and previoulsy i got it synced with the yet dead MobileMe.
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I lived with random reboot since 6 month, i'm not sure its far worse than loosing memories...
Will Apple provide a way to Sync SMS with iMessage on Mountain Lion in a near futur?
If so it would totaly worth the wait for me!
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Incident Identifier: 6B65D67E-D822-48DC-A87A-DBF6E208BE0B
CrashReporter Key:   a6a71cec65793fe6536271a3f0862b1435ddaedb
Hardware Model:      iPhone3,1
Date/Time:       2012-11-07 10:27:06.566 +0100
OS Version:      iOS 6.0.1 (10A523)
panic(cpu 0 caller 0x8b756941): "IOP panic: dma_int_handler: CDMA: channel 7 error interrupt, error status 0x10 "
Debugger message: panic
OS version: 10A523
Kernel version: Darwin Kernel Version 13.0.0: Wed Oct 10 23:29:02 PDT 2012; root:xnu-2107.2.34~2/RELEASE_ARM_S5L8930X
iBoot version: iBoot-1537.4.21
secure boot?: YES
Paniclog version: 1
Kernel slide:     0x000000000ac00000
Kernel text base: 0x8ac01000
Epoch Time:        sec usec
Boot    : 0x50991f49 0x00000000
Sleep   : 0x509a26e8 0x000732c7
Wake    : 0x509a26ea 0x00000019
Calendar: 0x509a26f3 0x00077221
Task 0x800dcc20: 10045 pages, 104 threads: pid 0: kernel_task
                thread 0x80d2f0a0
                               kernel backtrace: 800abea0
                               lr: 0x8ac88f61 fp: 0x800abed0
                               lr: 0x8ac897fd fp: 0x800abefc
                               lr: 0x8ac17ca7 fp: 0x800abf14
                               lr: 0x8b756941 fp: 0x800abf44
                               lr: 0x8b7559d9 fp: 0x800abf54
                               lr: 0x8ae59413 fp: 0x800abf68
                               lr: 0x8ac2fefd fp: 0x800abfa8
                               lr: 0x8ac8705c fp: 0x00000000
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Thank you for this last resort option.
Malcolm J. Rayfield wrote:
You can save all the SMS to your computer with applications such as PhoneView before you restore you iPhone as new (not using any old backups) using applications such as PhoneView
<http://www.ecamm.com/mac/phoneview/>
but there is no way to get them back in the phone's message section. You could make a file (e.g. PDF) of them on the computer and sync it to the phone if you need to see them on the phone. You could access them with Mail or iBooks.
But as I can't restore SMS to the iPhone it's not a 100% percent satisfying method.
Can someone at least confirm that the problem comes from the backup and not the hardware?
The kernel panic keep refering to something linked to the carrier.
panic(cpu 0 caller 0x8b756941): "IOP panic: dma_int_handler: CDMA: channel 7 error interrupt, error status 0x10 "
As I will soon get opportunity from my carrier to upgrade to an iPhone 5, won't the upgrade process fix this mess in a more satisfying way?

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Thank you
Attachments:
Digital I-O.vi ‏22 KB

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Cristina
Cristina

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Incident Identifier: 20304759-E90B-453F-BDC5-176AF4E30041
CrashReporter Key:   fcf18d230005749957728546dea3221a0c588330
Hardware Model:      iPhone7,1
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Sleep   : 0x54c58398 0x0002abb4
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{"os_version":"iOS 8.1.3 (12B466)","bug_type":"110"}
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CrashReporter Key: 623a577555e51ed110b937358adfa66fba3ea447
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0x834ad94d
0x834adcb1
0x8341d5bd
0x83dc8347
0x83dc8059
0x83dc7e35
0x8389c601
0x8389c513
0x836f6f65
0x8389cc6d
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0x83a9f18d
0x83a9c27f
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Incident Identifier: 1264E572-5575-44C8-AEAA-53BDB876236C
CrashReporter Key:   7663d0f86404d39d1907a3c444db2f37228e6b2b
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OS Version:          iOS 7.0.2 (11A501)
Debugger message: WDT timeout
1s ago: 1834b50 1834f9fd0ce63 1834r1c05000 1789m0/0 1777m0/1 1777u0 1623m0/0 1621m0/1 1621u0 1500m0/0 1500m0/1 1500u0 1400m0/0 1400m0/1 1400u0 1300m0/0 1300m0/1 1300u0 1200m0/0 1200m0/1 1200u0 1100m0/0 1100m0/1 1100u0 1000m0/0 1000m0/1 1000u0 900m0/0 900m0/1 900u0 800m0/0 800m0/1 700m0/0 700m0/1 600m0/0 600m0/1 600bff 600tc3ff 500m0/0 500m0/1 400m0/0 400m0/1 300m0/0 300m0/1 200m0/0 200m0/1 100m0/0 100m0/1 1fa25dd367 0m0/0 0m0/1
OS version: 11A501
Kernel version: Darwin Kernel Version 14.0.0: Mon Sep 9 20:49:01 PDT 2013; root:xnu-2423.1.74~2/RELEASE_ARM_S5L8945X
iBoot version: iBoot-1940.1.75
secure boot?: YES
Paniclog version: 1
Kernel slide:     0x000000001ba00000
Kernel text base: 0x9ba01000
Epoch Time:        sec       usec
Boot    : 0x52711237 0x00000000
Sleep   : 0x00000000 0x00000000
Wake    : 0x00000000 0x00000000
Calendar: 0x527112f9 0x000ee1be
Panicked task 0xa2b3aaa0: 2880 pages, 6 threads: pid 123: Preferences
panicked thread: 0x808e1440, backtrace: 0x9bd2eb10
lr: 0x9bb1649d fp: 0x9bd2eb44
lr: 0x9bb16e5b fp: 0x9bd2eb78
lr: 0x9be2a0af fp: 0x9bd2efc8
lr: 0x9c5fca53 fp: 0x9bd2eff0
lr: 0x9ba9779f fp: 0x9bd2eff8
lr: 0x9ba1ca10 fp: 0x27dc83ac
Task 0x9d679d48: 23573 pages, 116 threads: pid 0: kernel_task
Task 0x9d679aa0: 337 pages, 3 threads: pid 1: launchd
Task 0x9d6792a8: 1457 pages, 26 threads: pid 14: UserEventAgent
Task 0x9d679550: 1217 pages, 7 threads: pid 15: wifid
Task 0xa24cfd48: 1158 pages, 5 threads: pid 17: awdd
Task 0xa24cfaa0: 686 pages, 5 threads: pid 18: timed
Task 0xa24cf2a8: 834 pages, 6 threads: pid 21: mediaremoted
Task 0xa2979d48: 756 pages, 2 threads: pid 23: fairplayd.A1
Task 0xa29797f8: 623 pages, 4 threads: pid 25: iaptransportd
Task 0xa2979000: 532 pages, 2 threads: pid 28: softwareupdated
Task 0xa2b26d48: 2827 pages, 16 threads: pid 29: backboardd
Task 0xa2b26550: 760 pages, 5 threads: pid 32: mDNSResponder
Task 0xa2b262a8: 23647 pages, 15 threads: pid 33: SpringBoard
Task 0xa2b26000: 910 pages, 4 threads: pid 34: routined
Task 0xa2b3ad48: 579 pages, 2 threads: pid 35: softwarebehavior
Task 0xa2b3a550: 1556 pages, 22 threads: pid 38: aggregated
Task 0xa2e91aa0: 226 pages, 7 threads: pid 42: syslogd
Task 0xa2e917f8: 1462 pages, 6 threads: pid 43: aosnotifyd
Task 0xa2e91550: 217 pages, 2 threads
iPad

What does the error message say pr number?
If you have an iPad 1, the max iOS is 5.1.1. For newer iPads, the current iOS is 6.0.1. The Settings>General>Software Update only appears if you have iOS 5.0 or higher currently installed.
iOS 5: Updating your device to iOS 5 or Later
http://support.apple.com/kb/HT4972
How to install iOS 6
http://www.macworld.com/article/2010061/hands-on-with-ios-6-installation.html
iOS: How to update your iPhone, iPad, or iPod touch
http://support.apple.com/kb/HT4623
If you are currently running an iOS lower than 5.0, connect the iPad to the computer, open iTunes. Then select the iPad under the Devices heading on the left, click on the Summary tab and then click on Check for Update.
Tip - If connected to your computer, you may need to disable your firewall and anitvirus software temporarily. Then download and install the iOS update. Be sure and backup your iPad before the iOS update. After you update to iOS 6.x, the next update can be installed via wifi (i.e., not connected to your computer).
 Cheers, Tom

Finite cycles counter problem

Hello,
I am new to working with counters etc. I have a PCI-MIO-16e4 (NI-PCI-6040E) board and am working in VB.net with Ni-DAQmx. I am trying to send (sequentially) bytes of data to a device, sending a strobe signal (hi-lo transition) on a counter output line each time to notify the device that the byte is ready to be read. Timing is important and fast.
This is the process:
(a) Load byte to digital output lines
(b) Set counter 1 output to Low
(c) Hold low for 150 microseconds
(d) Set counter output to High (minimum 5 microseconds)
(e) Load next byte on digital output lines
(f) Go back to step b
I thought I could easily do this using the following code:
        Dim writer As New DigitalSingleChannelWriter(ByteChannel.Stream) 'ByteChannel is a task for the digital output lines
       TransmitChannel = New Task
       TransmitChannel.COChannels.CreatePulseChannelTime("Dev1/ctr1", "Xmt", COPulseTimeUnits.Seconds, IdleHigh, 0, 0.00015, 0.000005)
       TransmitChannel.Timing.ConfigureImplicit(SampleQuantityMode.FiniteSamples, 1)
        For a = 0 To 63
            writer.WriteSingleSamplePort(True, Packets(a)) 'place the next byte on the line
            TransmitChannel.Start()
            Do Until TransmitChannel.IsDone
                Application.DoEvents()
            Loop
            TransmitChannel.Stop()
        Next a
This gives me the low/high transition I need but the timing does not work - it takes much longer for each iteration to finish (> 50 millseconds for a pulse train that should last about 200 microseconds) than the timing I set up above would suggest. I have searched around but have not found anything online that helps me understand what I need to do to rectify this. Does anyone have any suggestions of what I can change or a more elegant way to do this?
thank you
David

What you're currently doing is starting and stopping 64 finite tasks. Each iteration of the loop the task outputs 1 byte on your digital lines, and then stops, repeats the loop, starts the task with a new byte in memory, and then stops again.
This starting and stopping of the task takes a significant amount of time.
What you need to do instead is a buffered digital output task. In a buffered digital output task you can specificy all 64 bytes, and then it will iterate through each one at the rate you specify and from some external clocking source. You can see this done in the shipping example ContWriteDigPort_ExtClk (found if you go to the start menu and navigate to Programs»National Instruments»NI-DAQ»Text-Based Code Support».NET 3.5 Examples and then browse to \Digital\Generate Values\ContWriteDigPort_ExtClk\VB
However, one very important thing to note, is that E series devices (such as the PCI-6040E) only support software-timed, on-demand digital tasks. This means they do not support hardware timed tasks, such as buffered digital generation.
That means there is no way you will be able to get your 150 microsecond timing from this card when doing digital generation. M series devices do support hardware timed, buffered digital generation with an external sample clock (such as your counter), and X series devices support buffered digital generation with either an external sample clock or an internal sample clock at a rate you specify, since they have a new digital timing engine on them as well.
You can still optimize your code however, by not starting and stopping the task each iteration, but rather start the task before the loop, and stop it after. Inside the loop you will simply need to use the WriteSingleSamplePort command in the loop. In fact, you pretty could do this I believe (note, I did not test this first):
TransmitChannel.Start()
   For a = 0 To 63
            writer.WriteSingleSamplePort(True, Packets(a)) 'place the next byte on the line
   Next a
   Do Until TransmitChannel.IsDone
                Application.DoEvents()
   Loop
TransmitChannel.Stop()
Eric S.
AE Specialist | Global Support
National Instruments

IPad restarting on its own

Hi,
I have iPad 4 running on iOS 7.1. It has been working fine since last two years. But, suddenly it has developed issues since yesterday. It has been restarting every two minutes. I searched through the Apple Community and carried out steps like restoring factory settings and turning off notifications, but these didn't help. I then looked at the diagnostic log and could find out that it has bug_type 110. I could understand from various other posts that this could be a hardware issue. Any other suggestion from anyone before I approach the Apple Store. Below is the dump which could could provide more information. Any help is much appreciated.
os_version":"iOS 7.1 (11D167)","bug_type":"110"}
Incident Identifier: 961AC821-3AB7-488B-ACA2-1409B85C19FD
CrashReporter Key:   2c95f2daed7d204e964cab8df2cfa3e02654355b
Hardware Model:      iPad3,6
Date/Time:           2014-09-18 21:58:56.825 +0530
OS Version:          iOS 7.1 (11D167)
Debugger message: WDT timeout
4s ago: 1949b50 1949f9fd0ce63 1949r1c74000 1910m0/0 1905m0/1 1905u0 1800m0/0 1800m0/1 1800u0 1700m0/0 1700m0/1 1700u0 1600m0/0 1600m0/1 1600u0 1591fa25dd367 1500m0/0 1500m0/1 1500u0 1400m0/0 1400m0/1 1400u0 1391f9fd0ce63 1300m0/0 1300m0/1 1300u0 1200m0/0 1200m0/1 1200u0 1100m0/0 1100m0/1 1100u0 1097f9fd0ce63 1000m0/0 1000m0/1 1000u0 913f9fd0ce63 900m0/0 900m0/1 900u0 800m0/0 800m0/1 700m0/0 700m0/1 700bff 700t30fffff 600m0/0 600m0/1 500m0/0 500m0/1 400m0/0 400m0/1 300m0/0 300m0/1 200m0/0 200m0/1 100m0/0 100m0/1 0m0/0 0m0/1
OS version: 11D167
Kernel version: Darwin Kernel Version 14.0.0: Fri Feb 21 19:33:46 PST 2014; root:xnu-2423.10.67~1/RELEASE_ARM_S5L8955X
Kernel slide:     0x000000001c600000
Kernel text base: 0x9c601000
Boot    : 0x541b0764 0x00000000
Sleep   : 0x00000000 0x00000000
Wake    : 0x00000000 0x00000000
Calendar: 0x541b0830 0x000ec72f
Total cpu_usage: 15843491
Thread task pri cpu_usage
0x801ac9f0 kernel_task 0 4877515
0x803309f0 kernel_task 0 4988147
Panicked task 0x801a1c00: 24561 pages, 127 threads: pid 0: kernel_task
panicked thread: 0x801ac9f0, backtrace: 0x9c935b10
0x9c719cd1
0x9c71a8cf
0x9ca321df
0x9d17ea4b
0x9c699ca7
0x9c61ca54
0x9c61e61c
Task 0x801a1c00: 24561 pages, 127 threads: pid 0: kernel_task
Task 0x801a1950: 340 pages, 3 threads: pid 1: launchd
Task 0x801a13f0: 1473 pages, 12 threads: pid 14: UserEventAgent
Task 0x801a1140: 1195 pages, 6 threads: pid 15: wifid
Task 0x801a0be0: 1979 pages, 4 threads: pid 17: awdd
Task 0x801a0930: 661 pages, 4 threads: pid 18: timed
Task 0x801a0120: 851 pages, 5 threads: pid 21: mediaremoted
Task 0x8019f910: 627 pages, 3 threads: pid 24: iaptransportd
Task 0x8019f100: 398 pages, 2 threads: pid 27: softwareupdated
Task 0x8019ee50: 3112 pages, 16 threads: pid 28: backboardd
Task 0x8019eba0: 1678 pages, 4 threads: pid 29: sharingd
Task 0x8019e390: 749 pages, 4 threads: pid 32: mDNSResponder
Task 0x8019e0e0: 30055 pages, 14 threads: pid 33: SpringBoard
Task 0x8019de30: 970 pages, 3 threads: pid 34: routined
Task 0x8019db80: 578 pages, 2 threads: pid 35: softwarebehavior
Task 0x8019d8d0: 1889 pages, 7 threads: pid 36: assistantd
Task 0x8019d370: 1303 pages, 8 threads: pid 38: aggregated
Task 0x8019c8b0: 218 pages, 7 threads: pid 42: syslogd
Task 0x8019c600: 1425 pages, 5 threads: pid 4
Thanks and Regards,
Debjyoti

Hello, debjyoti.
Thank you for visiting Apple Support Communities.
I see you have tried some troubleshooting steps already with there issue persisting. Here are some additional troubleshooting steps to go through when experiencing this issue. They are labeled for the iPhone, but apply to the iPad as well.
Will not turn on, will not turn on unless connected to power, or unexpected power off
Verify that the Sleep/Wake button functions. If it does not function, inspect it for signs of damage. If the button is damaged or is not functioning when pressed, seek service.
Check if a Liquid Contact Indicator (LCI) is activated or there are signs of corrosion. Learn about LCIs and corrosion.
Connect the iPhone to the iPhone's USB power adapter and let it charge for at least ten minutes.
After at least 30 minutes, if:
The home screen appears: The iPhone should be working. Update to the latest version of iOS if necessary. Continue charging it until it is completely charged and you see this battery icon in the upper-right corner of the screen . Then unplug the phone from power. If it immediately turns off, seek service.
The low-battery image appears, even after the phone has charged for at least 20 minutes: See "iPhone displays the low-battery image and is unresponsive" symptom in this article.
Something other than the Home screen or Low Battery image appears, continue with this article for further troubleshooting steps.
If the iPhone did not turn on, reset it while connected to the iPhone USB power adapter.
If the display turns on, go to step 4.
If the display remains black, go to next step.
Connect the iPhone to a computer and open iTunes. If iTunes recognizes the iPhone and indicates that it is in recovery mode, attempt to restore the iPhone. If the iPhone doesn't appear in iTunes or if you have difficulties in restoring the iPhone, see this article for further assistance.
If restoring the iPhone resolved the issue, go to step 4. If restoring the iPhone did not solve the issue, seek service.
If the issue persists, see the section labeled Issue not resolved.
Hardware troubleshooting
http://support.apple.com/kb/ts2802
Cheers,
Jason H.

Timed tasks

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