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They both use a Prolific chipset for USB-to-serial conversion. The MS ones have a slightly different USB ID and run on different drivers, but the hardware is identical, right down to every detail on the packaging and labeling. We've got both sets here: The original Pharos units as well as the Microsoft-rebranded ones. What's funny is that I've got some USB GPS units which are made by Pharos but which are microsoft-branded. Some devices, new COM ports are created when I swap to a different USB port, and other devices, they keep the same COM port number when I swap. Some of our tests involve swapping the devices to different USB ports on the computer. #Raspbian usb serial terminal program to send text file how to#350706 - 17:43 Re: How to send a text string to a serial COM port from a batch script #Raspbian usb serial terminal program to send text file serial numberIf the device does not have a serial number or all devices have the same serial number, then they'll all have the same COM port number, unless more than one of them is plugged in at the same time, in which case it will be random.Īnd don't get me started on the "Microsoft tax" which you have to pay if you want a CDC device to be enumerated without the need for an INF file, even though you're using the built in windows and standar USB device class. This has the advantage of the com port number being "sticky" for a particular device, but becomes a problem if you are just testing devices to make sure they function correctly, you can soon end up at stupidly high COM port numbers that never actually get seen again. Windows creates a new USB device port for each unique vid, pid and serial number that it sees. The ever increasing USB COM port numbers is either a blessing or an irritation depending on how you look at it. #Raspbian usb serial terminal program to send text file codeBut I'm trying for a quicker, simpler solution here without having to get into an extra layer of C code just to get this one simple thing done. I know that I could just compile an EXE file to use as a stub program that will handle the necessary details of opening the COM port, sending the command, and closing the COM port. Or, the search results say to use COPY or ECHO, and of course, I tried that and it just makes a hard disk file named COM155. I do searches, and the results always talk about using PUTTY and typing things live. those just create a file on the hard disk called "COM155" when I try it. Is there a super-simple way to send these commands from the DOS prompt or from a DOS batch file or a vbscript? I've tried COPY and ECHO. getWriter () const data new Uint8Array (104, 101, 108, 108, 111) // hello await writer. Calling releaseLock() on () is required for the serial port to be closed later. I have this all working, in that I can connect a serial terminal program to the COM155 port that the Arduino is connected to, and type the commands into the terminal program, and it will accept the commands and will work. Write to a serial port To send data to a serial device, pass data to ().write(). ![]() I need to be able to run an automation script or batch file (on Windows XP and later only) that will switch the relays under certain conditions during an overnight test run. I've got a piece of code running on an Arduino board that will accept ASCII text commands on its serial port, and then will switch some relays based on which text commands you send it.
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