Wii U Usb Helper
Gifford Brickley
I finally managed to write a little something about how we use helper loops in our applications. Feel free to take a look at -soft.com/blog/dqmh-actors-self-messaging-or-helper-loops/ and let me know if you have any further questions or comments
Nice post Joerg! I need to get round to writing mine! Your approach matches mine to a great extent. The bit that I've added is to have the helper loop enable/disable itself when the module is idle/active. So the timeout in the helper loop is set to -1 automatically when there's one or more messages in the message queue and reset to the helper loop period when the queue is emptied. That way I can be sure the helper loop never (or at least almost never) gets in the way of the operation of the module.
We're also using the second type of helper loop in a singleton module which manages (and provides the interface to) a cloneable module. The helper loop handles all messages coming from the cloneable modules (and any other external module we're interested in hearing from).
Now, this COULD be done using the main event handling loop of the DQMH, but I do prefer keeping the two loops separate - one loop for direct commands to the main module (i.e. the DQMH event loop) and one loop which I call the "External module event handler" which registers for the broadcast events of external modules...
One interesting thing is that you point out that you don't want the helper loop to get in the way of the operation of the module. So far, for most (if not all) of our modules with helper loops, I'd not want the module to get in the way of the helper loop. This distinction is definitely something to keep in mind when designing the module. Let's talk about this some more next week in Madrid.
When talking to some LabVIEW friends about this blog post, I was confronted with reservations regarding using the timeout event of an event structure for periodic actions. It was pointed out that NI's core 3 training recommends not to use the timeout event for any critical actions.
We're using DQMH for a motion application and the end user can physically move the motion stages around without software input. The helper loop makes the DQMH periodically poll it's controller for any change in encoder position value and then we can broadcast that out to the application to update any UI which shows system position in real time. The module already sends its positions out during moves so there's no need for the helper loop to run...
I would have to review the specifics of the LabVIEW Core 3 course to understand the exact scenario being described, but I can definitely see a recommendation to avoid using a Timeout event for handling "critical" events in an Event Structure that is also handling other "critical" events.
But in the case of a helper loop, the Timeout event *is* the critical event. As you mention above, it is critical that other requests *not* interfere with the operation of the helper loop (other than what was mentioned...enabling/disabling the helper loop, and the Stop Module request).
"Initially, we only supply a constant of the UI.System Message user event refnum for the event registration node. This allows us to create the corresponding event case. Beware that our helper loop is only loaded, but not yet armed."
1.) In my blog post, in the picture after the one you quote, you can see how I enable the event registration for broadcast events in the helper loop. I place the Obtain Broadcast Events for Registration.vi on the block diagram, wire its Broadcast Events cluster to an Unbundle By Name node, select the "System Message" user event refnum and wire it to the Register For Events node. This is the place where I get the constant: I pop up (right click) on the user event refnum wire and select "Create Constant" from the context menu:
2.) Drop the Broadcast Events--cluster.vi on the block diagram, and drag the "System Message" constant out of the cluster. Because the cluster is a typedef, you cannot move the constant out of it. You need to copy it out by keeping your ctrl-key pressed while dragging:
It seems that almost every day I get this stupid pop-up on my Macbook and Macmini (Desktop) telling me that I need to enter my password for my computer so that Evernote can do an update and "Add Helper". I have attached a screenshot of what I get. Why do I have to keep Adding the helper? This is really annoying.
There's an old thread on this, but I had to search to learn about it. Had never heard of helper before. The forum has a brief page on it, dated early 2019 but the EN help section on it is undated. What version EN are you running?
In Evernote v10 the Helper is installed alongside the main application. If you are being invited to install the helper on its own then you may be best uninstalling Evernote and then downloading the application from evernote.com and reinstalling which should fix the problem.
As @lost_gweedo notes, the helper changed between the older v7 of Evernote for MacOS and the current release. But I think my advice would be the same except that if you wish to remain with the older software you will have to download what is now called Legacy (search for download old version of evernote).
If you go the Legacy route remember that it is an unsupported software and from time to time issues arise that make it less relaible. I believe that user of MacOS Ventura are experiencing issues with the Legacy software which will not be repaired.
If I go to the activity monitor on my Mac, I find a number of processes running called "Evernote Helper". AFAIK they have nothing to do with the little EN Helper menu bar function - they are somehow part of the main app.
The message you get indicates that something is amiss with your installation. I think it tries to heal this be asking to install something in addition. I would completely purge the actual installation from my Mac, using the app AppCleaner from the internet. Then restart the Mac, and reinstall the EN app.
on ventura 13.6.5 but i''ll update and see if that helps. i do have something called "crashplan" installed by the IT guys at my university. i'll ask them what all else may be on to allow remote updates, etc.
It sounds your Mac is under MDM, that is the device management of your university. It is very likely the problems are related to this status - the MDM controls what can be installed, and with which authorizations. It can block the complete install of EN, leading to that repetitive message.
I too have this problem. The Helper installation pop-up comes onto my screen not four or five times per day but 20 to 30. Have uninstalled the software using AppCleaner, downloaded the App from Evernote and then reinstalled. Same problem. Someone at Evernote has GOT to fix this. Will have to get rid of the software and find some other if it can't be addressed.
You have a defective install. And there are 2 ways to solve the problem: Uninstall and stop using the app, or fix the install. Which usually requires local admin rights plus the knowledge of how to do it. But I think we discussed this already.
Hi,
I'm trying to move a folder that contains folders with photos in it from my dropbox to Files App in iPad. Previously it worked wonderfully and i can move them just fine. But, now after i updated to the latest iPad iOS 16.1, i can't move folders from my dropbox to my iPad in the File App. It still works when moving the picture directly though but its a pain to create the folder manually my self.
I've tried restarting my iPad, delete my dropbox and re-installing them, and reconnecting them all those stuff but still got those error when moving a folder. Any idea how to fix it? or is it a bug in the iPad iOS 16.1?
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Apple have advised that the Helper Application is not a native apple application and the issue is within Dropbox itself / the Dropbox helper application itself and is a compatibility issue with the latest IOS 16.1.1
They've advise that Dropbox would need to address the compatibility issue and that they are responsible for this fix.
Really hoping this can be fixed soon and not sure of the best way that this can be broadcasted or shared with the Dropbox development / support team.