Java rxtx usb serial ch340 drivers. Driver for wch.cn USB-SERIAL CH340 – downloading and installing it. Issue clone of Arduino guru. Additionally, each USB device interface descriptor contains the same signature fields. This class code is usually used only in interface descriptors, only bluetooth subclass allows use in device descriptors.

Apr 19, 2018  How to send to the serial port by using Mscomm32.ocx. Content provided by Microsoft. This article describes the settings necessary to send data to the serial port by using Mscomm32.ocx. Mscomm32.ocx ships with Microsoft Visual FoxPro Professional Edition. It can be used on computers that are running Microsoft Windows 95. Contains two methods to use in Visual FoxPro to receive data from the serial port by using the Mscomm32.ocx control. How to receive from the serial port by using MScomm32.ocx in Visual FoxPro This site uses cookies for analytics, personalized content and ads.

Hi - I'm an engineer working on trying to control a process using electrical resistance as a feedback. I had a development controller running in Excel VBA communicating with a Fluke 8845A digital multimeter. My pc recently died (for unrelated reasons) and am now attempting to setup the controller on another pc - but no luck. The controller relies upon communicating with the 8845A multimeter through a piece of code written in Excel VBA. The code uses MSComm to data to the multimeter and recieve data back from it. This is a nice way to run the controller as I can take the data, process it in vba code, store it to the spreadsheet and then directly provide feedback on what to do next to a robot.

I followed the process of downloading the MSComm ocx into the windows system folder (& system 32), registering it through reg command prompt, altering licences and this is where it goes wrong. I can't add the mscomm axtive x object to a worksheet in excel. I get the following messages: Cannot insert object. Can anyone help - I looked at removign the need for the MSComm use by employing some code I've found on-line but am having difficulty in getting this to work - I can open the port and send some data but have errors coming up when I try to read data. I need a solution asap!!! PS - this is to support a development process - the full production process controller will be programmed by a proper software engineer - not an aero eng! Microsoft Blog (URL 1) recommends replacing MSCOMM32.OCX with API (Application Programming Interface) code and links to a Serial Port Communication page (URL 2) where you can download VB source code to use the API.

May be Microsoft update might have caused this problem. Some say that the older version of MSCOMM32.OCX has had its 'kill bit' set by update 'kb969898' (which was installed on system on 28th June). Suggestions are to roll back the update, download an new version of MSCOMM32.OCX, or use a completely different method to read/write to the serial ports. Excel checks the Registry entry in 2 places for lincense for that control: HKEY_LOCAL_MACHINE SOFTWARE Classes Licenses and HKEY_CLASSES_ROOT Licenses for 4250E830-6AC2-11cf-8ADB-00AA00C00905 this controls GUID. I beleive the value is @='kjljvjjjoquqmjjjvpqqkqmqykypoqjquoun' If you had these it would be able to be used. Other cause: alternative is a class written by one of Microsoft employees that more or less mimics MSCOMM as far as the properties and the methods go.