newland | node.js 全栈式MVC framework | Runtime Evironment library

We are integrating a new barcode reader (Newland NLS-FM430) in one of our products and we need to control its functionality. We have already implemented this behavior with another reader but it was an RS232 version, so we were able to send commands and wait for its input. The new one is a USB version which makes things different.

Generally, we want to initialize the barcode reader when the application is started (e.g. to disable reading setup codes) and turn it off. Then we want to enable it at the moment we need input from it and disable it again once we have read the data. There are commands for all these operations, documented in the user guide.

The issue comes when trying to communicate with the USB device. When connected to the computer it acts as a normal keyboard (Human Interface Device, HID in Device Manager) and we need to send commands to it. For this we need to open a stream to the device and write in it. We tried different libraries and solutions and opening the device always fails with an ACCESS_DENIED error. My suspicion is that the device is locked because Windows uses it as a keyboard.

I found this topic which discusses a similar problem. They found a workaround by deleting the suffix /kbd in the Device Path (and ours also has as this suffix) but removing it does not work for us - it says it cannot find the device.

I am looking into a solution in C# or C/C++ that would make it possible to open a connection to the USB device and write to it. Any help is highly appreciated.

I have a javascript service that adds a country to a list in a postgresql database. Everything works fine but when I pull up the network tab in the chrome dev tools, the post request is not completed and it shows canceled in the status column.

When I look at the general header there is no post request executed

This is what the Javascript code where the request is put together looks like:

I have a Newland MT90 barcode reader android mobile. I am creating an application in which I want to scan two barcode. When I am running my code and I press any button first time then it is working fine. At the same time when I press another button then it is replacing Bar Code in both TextView. How can I resolve this ?

Hi All,

I want to set my download dynamic. Kindly help me. It is my Htmal code :-

Well first of all, I'm learning coding.

I am using Android Studio 3.1.3, Java, API level 22 (For Android OS 5.1)

I need to code an Android app that´ll capture data read from PDF417 that's on people's IDs in my country. Its a people access control app, so you come to a place and they read your ID and get some data saved on the device, to authorize or deny access to the place. Its and offline app, that´ll save data into a local SQLite database.

For this I'm using a Newland MT6550 device which has a built-in 1D and 2D Imager Scanner. So the device can read the PDF417 and a wide range of other barcodes (So, I do not need to create a reader app).

I need to parse the input of the PDF417 into several data Strings like Name, ID n°, date and serial code. All of which are stored in the PDF417 in what to me is an unknown format (or encoding?).

The problem is, that when I read the PDF417 with the scanner, it writes several unrecognizable characters (like the '?' inside a diamond, and Chinese or Korean characters) on the EditText, which is where im getting the code input, and I cant´t parse that, and also it doesn´t give me all the data.

Is there a way to set up the input so it gives me something I can work with? Maybe a String without the '?' or an XML file I can read and separate into the Strings of data I need. (Which I know how to do)

TL;DR: I need to parse data input from PDF417 built-in scanner Android device, capture that input into my app, and save data from it.

Here is an example of the resulting data:

178023954111605108 GARC虯 CHL280618A02375463812 � PC1悇o@?h<}r皩z苝u祑偲歝頺b~L哖乺嵟e潔疂Q鋂o堡Rj_尯畬筍1]�:祪臽樐挙|甂醃暵洠燫嫻VM焤┫篟a耼觟ㄊEz硠.鮡〩�0m槺棷Φw碨莿M０�?Qじ9�絀ω挄� /聾,盼3裐?EABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghij

I have the following pandas series that I'm trying to adjust in an if/else manner depending on if the value in the series equals 'Unspecified'. I have been reviewing as much material on this common error in pandas but it doesn't seem to be helping. Can someone please help me have my pandas Series adjust the last state names to uppercase unless the value equals 'Unspecified'. This was my best guess test_series.where('Unspecified', test_series.str[:-2] + test_series.str[-2:].str.upper()) Thanks!!

this is my code that gives a list of particular news links from HTML page, it contains only resource name and parameters, I want to include main domain name so that link can be operatable.

I have imported a huge json file into mongoDB. It has imported as one whole document (with one _id). My json looks like this:

I've got a this json file to import: