I am trying to allow a POS web app to print directly to a StarMicronics (or any receipt printer, for that matter) using the Chrome webusb API.
I am using the example here almost exactly except I have modified the vendorId filter to the Vendor ID of StarMicronics. I have also tried it with a completely empty filter. It works great on the Mac computers I have tested it on, but the problem is on Windows.
When I click the print button, Chrome opens up the connection window, my device is listed and I can select it and click Connect. So navigator.usb.getDevices() is working great. When I refresh the window, after having connected the website to the device, Chrome finds the device again with no problem.
The problem comes when I try to do device.open(). I get this error in the console: DOMException: Access Denied. From this point, I can't do either device.selectConfiguration() or device.claimInterface() because I get the error that the device must first be opened, obviously.
I have enabled all the flags I know of in Chrome:
#enable-experimental-web-platform-features
#enable-webusb
#new-usb-backend
But none of this has helped. I have also tried using other printers, such as an HP deskjet and a Dymo Label Writer all with the same resulting error message that access is denied.
Again, it is working fine on Macs.
Any help on this would be greatly appreciated.
You get the "Access Denied" error on Windows because there is already a driver that has claimed the device. The Windows driver model requires that the "winusb.sys" driver be loaded for any device that will be accessed by a userspace application like Chrome.
See my answer to this earlier question about smartcard readers which encounter the same difficulty on Windows.
You'll need to first download the Star Micronics Windows Driver (available here for the SP700). You want the "USB Vendor Class Driver" (again, available here for the SP700)
Of course, there is no auto-installer (to my knowledge), so you'll have to open up the StarUSBVendorClassDriver_... zipped folder, and navigate to Manuals/usb-vendor-class-driver_im_en.pdf.
In reading this, you'll notice that you actually need to install the driver from the CMD line with the following cmd (note the <version_here>, don't COPY+PASTE):
pnputil -a StarUSBVendorClassDriver_<version_here>\USBVendorClassDriver\SMJUSBCOM.INF
Once you have the correct driver installed, download the Zadig utility from the download page here. The website is ad-ridden, but I had no problems.
Open Zadig, toggle the "Options" menu dropdown, and toggle "List All Devices".
You should then see your device in the drop down below. Select it as shown below.
Then, on the LHS dropdown, you will see a "non WinUSB" driver selected. On the RHS, ensure that WinUSB is selected, and click "Replace Driver".
This should enable WebUSB! Happy printing!
Related
I downloaded the agora.io video sdk asset from the asset store, imported it to a new project. On the demo "SceneHome" scene, I entered the api id. Clicked play, and as soon as I click the "join" button Unity crashes. As far as I can tell the crash happens on the
app.join(field.text);
line in the TestHome.cs script (line #86).
I tested it in 2019.3.2f1 and 2020.1.0b5. The result was the same.
The OS is Catalina 10.15.4.
The demo works on Windows.
I followed this tutorial: https://medium.com/#jake_agora.io/mac-run-video-chat-within-your-unity-application-e001091db62f but used x86_64 dlls instead of x86
Does anyone know what this is about? Or where should I begin to look?
Another tutorial, this one from Agora:
https://www.agora.io/en/blog/run-video-chat-within-your-unity-application-mac
It can be caused by missing the Camera and Microphone usage in the Unity Editor project setting. Please let us know if that's the case. (I saw you are also on the Slack channel, let's continue the conversation there.).
For the people who didn't know, Agora Developer Community - Unity Chat channel is here :)
As herve nau pointed out the problem was that the Unity did not had the permission to use camera or microphone. And the solution should work. Alternatively, here is another way to add the permission as described by launzone:
1) Disable SIP: Go into recovery mode (hold CMD+R when you
restart your Mac) Don't be afraid, we are not doing anything crazy.
2) After that open Terminal (it should be accessible from one of the
Menus at the Top) Type in "csrutil disable" and hit enter. Then reboot
your Mac normally.
3) Open Terminal and type in: "sqlite3 ~/Library/Application\
Support/com.apple.TCC/TCC.db" and hit enter
4) For microphone access, type in: "INSERT INTO access
VALUES('kTCCServiceMicrophone','com.unity3d.unityhub',0,1,1,NULL,NULL,NULL,'UNUSED',NULL,0,1541440109);"
and hit enter
For camera, type in: "INSERT INTO access
VALUES('kTCCServiceCamera','com.unity3d.unityhub',0,1,1,NULL,NULL,NULL,'UNUSED',NULL,0,1541440109);"
and hit enter
6) check in your SystemPreferences/Security&Privacy > unity hub should
now show up in both mic and cam
7) reboot in recovery mode again (CMD+R), open terminal again, type
in: "csrutil enable" and hit enter, to enable SIP again
8) reboot normally and enjoy!
Here is the full thread. I hope it helps someone :)
check if not related to the webcam registration issue on macOs with the Unity Hub running. Fix for the camera, not sure if related to your problem: Remove the Unity Hub app, then open the project directly from Unity App. May also be useful to relocate the Unity app in another folder to force the webcam usage security registration.
Made the test here, Unity 2019.3.11.f1, using the demo app, with Hub active -> crash on press of Join Button, did the Hub removal described above, rerun the same demo and no more crash at this level. Running on Catalina 10.15.2.
My intuition tells me someone, somewhere, must have answered this question before. Searching around I have not found it.
I have a freshly installed Windows 7 box (upgraded to Windows 10 to get the machine made eligible, now reinstalling). I have a cheap wifi dongle. I do not know the manufacturer, nor where the driver dvd is. Plugged into the machine running Linux, it just works. It is small, black, and has 802.11n printed on it in white writing, and there are no other identifying markers. (For reference, it looks a bit like one of these: http://www.dhgate.com/product/1pcs-mini-usb-wifi-adapter-802-11-b-g-n-wi/250459680.html)
How, in general, in Windows 7, do I identify the correct driver, and how to I obtain the correct driver?
Found it, ironically shortly after posting this question in frustration.
Go to Windows Device Manager (right click on Computer in start menu, select Properties, then select Device Manager on left pane).
Find the device in Other Devices, then select Properties
Go to details pane, select Hardware Ids from the property dropdown.
You will see, e.g. USB\VID_148F&PID_5370&REV_0101 -- take this string and put it into google, or another search engine.
That gives you a good chance of finding something. I found a .cab file via devid.info, copied it to the machine, extracted all the files to a folder, then in the Device Manager right click on the unknown device, click Update Driver Software, select the option to browse your machine, and point it to the folder you unpacked the drivers to.
I've an iMac with OS X Yosemite v.10.10.3. I use Firefox Developer Edition 40.0a2. I've a ZTE Open C (FR version) with Firefox OS; Boot2Gecko 2.1.0.0-prerelease (B2G OS).
What I'd like to do is the following: I've a basic webpage (mostyl HTML, CSS and JS) opened in my browser on my Firefox OS phone. I'd like to get the devtools (Cmd+Shift+i) and be able to edit that webpage with my Firefox Developer Edition browser on my iMac.
I've already tried these things:
Use webIDE.
Follow this potential solution.
Connecting a Firefox OS device.
WebIDE Troubleshooting.
Comment déboguer facilement du web y compris sur tablettes et téléphones—french article.
With webIDE, I can build a new app for Firefox OS (with or without a base theme) and I can use the devtools to inspect the DOM and stuff like that. I just want to achieve the exact same thing but directly on my desktop computer.
Do you have any clue?
Feel free to ask me if you need more piece of informations. ;)
Current status
When I launch the Firefox OS browser app, I can inspect (via the devtools) the homepage (DOM stuff, etc.). But when I load another webpage (Google for example), I can't inspect the DOM. Any idea about that?
I often get this message: http://puu.sh/ir2Ju/32563e51bc.png when I switch to several apps I want to debug.
If I understand correctly, you're trying to connect the Firefox Developer Edition WebIDE on your desktop to a tab that is open on your Firefox OS phone. Something like this?
If that's right, once you connect to your phone in the WebIDE, you should see a list of open browser tabs at the bottom of the "Open App" menu, which is in the top left of the WebIDE panel.
When you connect your phone, you have to accept remote debugging.
Then on the left of the window, you should see a dropdown menu with the apps that you can debug. By default, you can only debug unprivileged applications.
Click on the app, the you want to debug and in the middle of the screen click on the "wrench". It is the button to activate debugging.
Now the complicated part. In order to debug privileged apps such as the web Browser. You have to root your phone and change some preferences. To check that you have a rooted phone. Click on the runtime menu and then runtime info.
If your adb is in root mode, then you can press the button to request higher privileges. You can also do that by hand.
There for more info:
https://developer.mozilla.org/fr/docs/Tools/WebIDE/Running_and_debugging_apps#Unrestricted_app_debugging_%28including_certified_apps.2C_main_process.2C_etc.%29
https://developer.mozilla.org/en-US/Firefox_OS/Using_the_App_Manager#Using_the_B2G_desktop_client
Using a real device
On your computer, enter the following command in Terminal/console to enter your device's filesystem via the shell:
adb shell
Your prompt should change to root#android. Next, stop B2G running using the following command:
stop b2g
Navigate to the following directory:
cd /data/b2g/mozilla/*.default/
Here, update the prefs.js file with the following line:
echo 'user_pref("devtools.debugger.forbid-certified-apps", false);' >> prefs.js
After you've finished editing and saving the file, start B2G again using the following command:
start b2g
Exit the android filesystem using the exit command; this will return you to your normal terminal prompt.
Next, reconnect to the App Manager and you should see certified apps appear for debugging.
When this is done, you should see the application "Browser" in the list of available apps for debugging. At the same time, you should see all other application of your phone available as debugging.
We have many customers using our AIR application on Mac and Windows, but one customer has this issue, no File popup dialogs, for opening, browse open, this are open from button click handlers but we are on AIR not on Flash in browser so there should not be restrictions, I am unable to find on google similar issues and I am not sure what could cause this only on this machine and how to fix it(if I could fix it in code or tell customer what to configure)
EDIT, here is some sample code
var browseFile:File = File.documentsDirectory;
browseFile.addEventListener(Event.SELECT, fileSelected);
browseFile.browseForDirectory("Select Local Folder");
EDIT2
This is the exception
Error: Error #2014: Feature is not available at this time.
at flash.filesystem::File$/initDocumentsDir()
at flash.filesystem::File$/get documentsDirectoryPath()
at flash.filesystem::File$/get documentsDirectory()
My problem is that I use a .swc that also uses this code that I don't have the source to work around this. I was not aware that this functionality could not work
I am attempting to make our webpage open when someone plugs in our USB device.
My Problem: When we plug in the USB device the autorun dialog appears but there is never an option to open/run the webpage we have specified. See below pic of the dialog we see. Isn't there meant to be an option that says something like "Open in Internet Explorer" or etc.?
What we are hoping to achieve is to have another option below 'Use this drive for backup' that says something like 'Open in Web Browser' or something that will ultimately open our webpage when the users decides to.
Heres our code that is inside the file autorun.inf which is placed on the USB device:
[autorun]
shellexecute=http://exds-test.epicservices.com.au/V10InstallationInfo.aspx
action=Open Website
label=EXDS USB Drive
According to this link, this will not work on modern OS versions
http://www.flashbay.com/services/usb-autorun
You've got to use a "helper" application.